From 0a925ea2151c96eae16961761f35e823e5f8b4d3 Mon Sep 17 00:00:00 2001 From: Matteo Collina Date: Fri, 5 Mar 2021 11:22:28 +0100 Subject: [PATCH] Updated browser version --- dist/msgpack5.js | 11980 ++++++++++++++++++++++------------------- dist/msgpack5.min.js | 2 +- 2 files changed, 6368 insertions(+), 5614 deletions(-) diff --git a/dist/msgpack5.js b/dist/msgpack5.js index f45be56..b940a57 100644 --- a/dist/msgpack5.js +++ b/dist/msgpack5.js @@ -1,4 +1,4 @@ -(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.msgpack5 = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o= 0, 'must have a non-negative type') assert(decode, 'must have a decode function') - - decodingTypes.push({ - type: type, decode: decode - }) - + decodingTypes.set(type, decode) return this } @@ -69,335 +75,371 @@ function msgpack (options) { } return { - encode: buildEncode(encodingTypes, options.forceFloat64, options.compatibilityMode, options.disableTimestampEncoding), - decode: buildDecode(decodingTypes), - register: register, - registerEncoder: registerEncoder, - registerDecoder: registerDecoder, + encode: buildEncode(encodingTypes, options), + decode: buildDecode(decodingTypes, options), + register, + registerEncoder, + registerDecoder, encoder: streams.encoder, decoder: streams.decoder, // needed for levelup support buffer: true, type: 'msgpack5', - IncompleteBufferError: buildDecode.IncompleteBufferError + IncompleteBufferError } } module.exports = msgpack -},{"./lib/decoder":2,"./lib/encoder":3,"./lib/streams":4,"assert":5,"bl":7,"safe-buffer":28}],2:[function(require,module,exports){ -var bl = require('bl') -var util = require('util') +},{"./lib/codecs/DateCodec":2,"./lib/decoder":3,"./lib/encoder":4,"./lib/helpers.js":5,"./lib/streams":6,"assert":7,"bl":12,"safe-buffer":35}],2:[function(require,module,exports){ +(function (Buffer){(function (){ +const type = -1 -function IncompleteBufferError (message) { - Error.call(this) // super constructor - if (Error.captureStackTrace) { - Error.captureStackTrace(this, this.constructor) // super helper method to include stack trace in error object +function encode (dt) { + if (dt === null) { + return } - this.name = this.constructor.name - this.message = message || 'unable to decode' -} -util.inherits(IncompleteBufferError, Error) - -module.exports = function buildDecode (decodingTypes) { - return decode + var millis = dt * 1 + var seconds = Math.floor(millis / 1000) + var nanos = (millis - seconds * 1000) * 1e6 - function getSize (first) { - switch (first) { - case 0xc4: - return 2 - case 0xc5: - return 3 - case 0xc6: - return 5 - case 0xc7: - return 3 - case 0xc8: - return 4 - case 0xc9: - return 6 - case 0xca: - return 5 - case 0xcb: - return 9 - case 0xcc: - return 2 - case 0xcd: - return 3 - case 0xce: - return 5 - case 0xcf: - return 9 - case 0xd0: - return 2 - case 0xd1: - return 3 - case 0xd2: - return 5 - case 0xd3: - return 9 - case 0xd4: - return 3 - case 0xd5: - return 4 - case 0xd6: - return 6 - case 0xd7: - return 10 - case 0xd8: - return 18 - case 0xd9: - return 2 - case 0xda: - return 3 - case 0xdb: - return 5 - case 0xde: - return 3 - default: - return -1 - } - } + if (seconds < 0 || seconds > 0x400000000) { + // Timestamp96 + const encoded = Buffer.allocUnsafe(13) + encoded[0] = -1 - function hasMinBufferSize (first, length) { - var size = getSize(first) + encoded.writeUInt32BE(nanos, 1) - if (size !== -1 && length < size) { - return false + var hex = '' + if (seconds >= 0) { + const padhex = '0000000000000000' + hex = seconds.toString(16) + // add some padding + hex = padhex.slice(0, hex.length * -1) + hex } else { - return true - } + // encode seconds in 2's Complement 64Bit + // reverse sign + // keep all bits 0 and first 1 from right + // reverse all other bits + var bin = (seconds * -1).toString(2) + var i = bin.length - 1 + while (bin[i] === '0') { + i-- + } + bin = bin.slice(0, i).split('').map(function (bit) { return bit === '1' ? 0 : 1 }).join('') + bin.slice(i, bin.length) + // add some padding + const pad64 = '1111111111111111111111111111111111111111111111111111111111111111' + bin = pad64.slice(0, bin.length * -1) + bin + // convert to hex + bin.match(/.{1,8}/g).forEach(function (byte) { + byte = parseInt(byte, 2).toString(16) + if (byte.length === 1) { + byte = '0' + byte + } + hex += byte + }) + } + encoded.write(hex, 5, 'hex') + return encoded + } else if (nanos || seconds > 0xffffffff) { + // Timestamp64 + const encoded = Buffer.allocUnsafe(9) + encoded[0] = -1 + + var upperNanos = nanos * 4 + var upperSeconds = seconds / Math.pow(2, 32) + var upper = (upperNanos + upperSeconds) & 0xffffffff + var lower = seconds & 0xffffffff + + encoded.writeInt32BE(upper, 1) + encoded.writeInt32BE(lower, 5) + return encoded + } else { + // Timestamp32 + const encoded = Buffer.allocUnsafe(5) + encoded[0] = -1 + encoded.writeUInt32BE(Math.floor(millis / 1000), 1) + return encoded } +} - function isValidDataSize (dataLength, bufLength, headerLength) { - return bufLength >= headerLength + dataLength - } +function check (obj) { + return typeof obj.getDate === 'function' +} - function buildDecodeResult (value, bytesConsumed) { - return { - value: value, - bytesConsumed: bytesConsumed - } +function decode (buf) { + var seconds + var nanoseconds = 0 + + switch (buf.length) { + case 4: + // timestamp 32 stores the number of seconds that have elapsed since 1970-01-01 00:00:00 UTC in an 32-bit unsigned integer + seconds = buf.readUInt32BE(0) + break + + case 8: + // Timestamp 64 stores the number of seconds and nanoseconds that have elapsed + // since 1970-01-01 00:00:00 UTC in 32-bit unsigned integers, split 30/34 bits + var upper = buf.readUInt32BE(0) + var lower = buf.readUInt32BE(4) + nanoseconds = upper / 4 + seconds = ((upper & 0x03) * Math.pow(2, 32)) + lower // If we use bitwise operators, we get truncated to 32bits + break + + case 12: + // timestamp 96 stores the number of seconds and nanoseconds that have elapsed + // since 1970-01-01 00:00:00 UTC in 64-bit signed integer and 32-bit unsigned integer + + // get seconds in hex + var hex = buf.toString('hex', 4, 12) + // check if seconds is a negative number + if (parseInt(buf.toString('hex', 4, 6), 16) & 0x80) { + // convert to binary + var bin = '' + const pad8 = '00000000' + hex.match(/.{1,2}/g).forEach(function (byte) { + byte = parseInt(byte, 16).toString(2) + byte = pad8.slice(0, byte.length * -1) + byte + bin += byte + }) + // decode seconds from 2's Complement 64Bit + // reverse all bits + // reverse sign + // remove one + seconds = -1 * parseInt(bin.split('').map(function (bit) { return bit === '1' ? 0 : 1 }).join(''), 2) - 1 + } else { + seconds = parseInt(hex, 16) + } + + nanoseconds = buf.readUInt32BE(0) } + var millis = (seconds * 1000) + Math.round(nanoseconds / 1E6) + + return new Date(millis) +} + +module.exports = { check, type, encode, decode } + +}).call(this)}).call(this,require("buffer").Buffer) +},{"buffer":14}],3:[function(require,module,exports){ +'use strict' + +var bl = require('bl') +var IncompleteBufferError = require('./helpers.js').IncompleteBufferError + +const SIZES = { + 0xc4: 2, + 0xc5: 3, + 0xc6: 5, + 0xc7: 3, + 0xc8: 4, + 0xc9: 6, + 0xca: 5, + 0xcb: 9, + 0xcc: 2, + 0xcd: 3, + 0xce: 5, + 0xcf: 9, + 0xd0: 2, + 0xd1: 3, + 0xd2: 5, + 0xd3: 9, + 0xd4: 3, + 0xd5: 4, + 0xd6: 6, + 0xd7: 10, + 0xd8: 18, + 0xd9: 2, + 0xda: 3, + 0xdb: 5, + 0xde: 3, + 0xdc: 3, + 0xdd: 5 +} + +function isValidDataSize (dataLength, bufLength, headerLength) { + return bufLength >= headerLength + dataLength +} + +module.exports = function buildDecode (decodingTypes, options) { + return decode + function decode (buf) { + // TODO: Make it into ensureBl handler ? if (!(buf instanceof bl)) { buf = bl().append(buf) } - var result = tryDecode(buf) - if (result) { - buf.consume(result.bytesConsumed) - return result.value - } else { - throw new IncompleteBufferError() + var result = tryDecode(buf, 0) + // Handle worst case ASAP and keep code flat + if (!result) throw new IncompleteBufferError() + + buf.consume(result[1]) + return result[0] + } + + function tryDecode (buf, initialOffset) { + if (buf.length <= initialOffset) return null + + const bufLength = buf.length - initialOffset + var offset = initialOffset + + const first = buf.readUInt8(offset) + offset += 1 + + const size = SIZES[first] || -1 + if (bufLength < size) return null + + const inRange = (start, end) => first >= start && first <= end + + if (first < 0x80) return [first, 1] // 7-bits positive ints + if ((first & 0xf0) === 0x80) { + const length = first & 0x0f + const headerSize = offset - initialOffset + // we have a map with less than 15 elements + return decodeMap(buf, offset, length, headerSize, options) + } + if ((first & 0xf0) === 0x90) { + const length = first & 0x0f + const headerSize = offset - initialOffset + // we have an array with less than 15 elements + return decodeArray(buf, offset, length, headerSize) + } + + if ((first & 0xe0) === 0xa0) { + // fixstr up to 31 bytes + const length = first & 0x1f + if (!isValidDataSize(length, bufLength, 1)) return null + const result = buf.toString('utf8', offset, offset + length) + return [result, length + 1] + } + if (inRange(0xc0, 0xc3)) return decodeConstants(first) + if (inRange(0xc4, 0xc6)) { + const length = buf.readUIntBE(offset, size - 1) + offset += size - 1 + + if (!isValidDataSize(length, bufLength, size)) return null + const result = buf.slice(offset, offset + length) + return [result, size + length] + } + if (inRange(0xc7, 0xc9)) { + const length = buf.readUIntBE(offset, size - 2) + offset += size - 2 + + const type = buf.readInt8(offset) + offset += 1 + + if (!isValidDataSize(length, bufLength, size)) return null + return decodeExt(buf, offset, type, length, size) + } + if (inRange(0xca, 0xcb)) return decodeFloat(buf, offset, size - 1) + if (inRange(0xcc, 0xcf)) return decodeUnsignedInt(buf, offset, size - 1) + if (inRange(0xd0, 0xd3)) return decodeSigned(buf, offset, size - 1) + if (inRange(0xd4, 0xd8)) { + var type = buf.readInt8(offset) // Signed + offset += 1 + return decodeExt(buf, offset, type, size - 2, 2) + } + + if (inRange(0xd9, 0xdb)) { + const length = buf.readUIntBE(offset, size - 1) + offset += size - 1 + + if (!isValidDataSize(length, bufLength, size)) return null + const result = buf.toString('utf8', offset, offset + length) + return [result, size + length] + } + if (inRange(0xdc, 0xdd)) { + const length = buf.readUIntBE(offset, size - 1) + offset += size - 1 + return decodeArray(buf, offset, length, size) + } + if (inRange(0xde, 0xdf)) { + let length + switch (first) { + case 0xde: + // maps up to 2^16 elements - 2 bytes + length = buf.readUInt16BE(offset) + offset += 2 + // console.log(offset - initialOffset) + return decodeMap(buf, offset, length, 3, options) + + case 0xdf: + length = buf.readUInt32BE(offset) + offset += 4 + return decodeMap(buf, offset, length, 5, options) + } } + if (first >= 0xe0) return [first - 0x100, 1] // 5 bits negative ints + + throw new Error('not implemented yet') } - function tryDecode (buf, offset) { - offset = offset === undefined ? 0 : offset - var bufLength = buf.length - offset - if (bufLength <= 0) { - return null + function decodeArray (buf, initialOffset, length, headerLength) { + var offset = initialOffset + const result = [] + var i = 0 + + while (i++ < length) { + var decodeResult = tryDecode(buf, offset) + if (!decodeResult) return null + + result.push(decodeResult[0]) + offset += decodeResult[1] } + return [result, headerLength + offset - initialOffset] + } - var first = buf.readUInt8(offset) - var length - var result = 0 - var type - var bytePos - - if (!hasMinBufferSize(first, bufLength)) { - return null - } - - switch (first) { - case 0xc0: - return buildDecodeResult(null, 1) - case 0xc2: - return buildDecodeResult(false, 1) - case 0xc3: - return buildDecodeResult(true, 1) - case 0xcc: - // 1-byte unsigned int - result = buf.readUInt8(offset + 1) - return buildDecodeResult(result, 2) - case 0xcd: - // 2-bytes BE unsigned int - result = buf.readUInt16BE(offset + 1) - return buildDecodeResult(result, 3) - case 0xce: - // 4-bytes BE unsigned int - result = buf.readUInt32BE(offset + 1) - return buildDecodeResult(result, 5) - case 0xcf: - // 8-bytes BE unsigned int - // Read long byte by byte, big-endian - for (bytePos = 7; bytePos >= 0; bytePos--) { - result += (buf.readUInt8(offset + bytePos + 1) * Math.pow(2, (8 * (7 - bytePos)))) - } - return buildDecodeResult(result, 9) - case 0xd0: - // 1-byte signed int - result = buf.readInt8(offset + 1) - return buildDecodeResult(result, 2) - case 0xd1: - // 2-bytes signed int - result = buf.readInt16BE(offset + 1) - return buildDecodeResult(result, 3) - case 0xd2: - // 4-bytes signed int - result = buf.readInt32BE(offset + 1) - return buildDecodeResult(result, 5) - case 0xd3: - result = readInt64BE(buf.slice(offset + 1, offset + 9), 0) - return buildDecodeResult(result, 9) - case 0xca: - // 4-bytes float - result = buf.readFloatBE(offset + 1) - return buildDecodeResult(result, 5) - case 0xcb: - // 8-bytes double - result = buf.readDoubleBE(offset + 1) - return buildDecodeResult(result, 9) - case 0xd9: - // strings up to 2^8 - 1 bytes - length = buf.readUInt8(offset + 1) - if (!isValidDataSize(length, bufLength, 2)) { - return null - } - result = buf.toString('utf8', offset + 2, offset + 2 + length) - return buildDecodeResult(result, 2 + length) - case 0xda: - // strings up to 2^16 - 2 bytes - length = buf.readUInt16BE(offset + 1) - if (!isValidDataSize(length, bufLength, 3)) { - return null - } - result = buf.toString('utf8', offset + 3, offset + 3 + length) - return buildDecodeResult(result, 3 + length) - case 0xdb: - // strings up to 2^32 - 4 bytes - length = buf.readUInt32BE(offset + 1) - if (!isValidDataSize(length, bufLength, 5)) { - return null - } - result = buf.toString('utf8', offset + 5, offset + 5 + length) - return buildDecodeResult(result, 5 + length) - case 0xc4: - // buffers up to 2^8 - 1 bytes - length = buf.readUInt8(offset + 1) - if (!isValidDataSize(length, bufLength, 2)) { - return null - } - result = buf.slice(offset + 2, offset + 2 + length) - return buildDecodeResult(result, 2 + length) - case 0xc5: - // buffers up to 2^16 - 1 bytes - length = buf.readUInt16BE(offset + 1) - if (!isValidDataSize(length, bufLength, 3)) { - return null - } - result = buf.slice(offset + 3, offset + 3 + length) - return buildDecodeResult(result, 3 + length) - case 0xc6: - // buffers up to 2^32 - 1 bytes - length = buf.readUInt32BE(offset + 1) - if (!isValidDataSize(length, bufLength, 5)) { - return null - } - result = buf.slice(offset + 5, offset + 5 + length) - return buildDecodeResult(result, 5 + length) - case 0xdc: - // array up to 2^16 elements - 2 bytes - if (bufLength < 3) { - return null - } + function decodeMap (buf, offset, length, headerLength, options) { + const _temp = decodeArray(buf, offset, 2 * length, headerLength) + if (!_temp) return null + const [ result, consumedBytes ] = _temp - length = buf.readUInt16BE(offset + 1) - return decodeArray(buf, offset, length, 3) - case 0xdd: - // array up to 2^32 elements - 4 bytes - if (bufLength < 5) { - return null - } + var isPlainObject = !options.preferMap - length = buf.readUInt32BE(offset + 1) - return decodeArray(buf, offset, length, 5) - case 0xde: - // maps up to 2^16 elements - 2 bytes - length = buf.readUInt16BE(offset + 1) - return decodeMap(buf, offset, length, 3) - case 0xdf: - throw new Error('map too big to decode in JS') - case 0xd4: - return decodeFixExt(buf, offset, 1) - case 0xd5: - return decodeFixExt(buf, offset, 2) - case 0xd6: - return decodeFixExt(buf, offset, 4) - case 0xd7: - return decodeFixExt(buf, offset, 8) - case 0xd8: - return decodeFixExt(buf, offset, 16) - case 0xc7: - // ext up to 2^8 - 1 bytes - length = buf.readUInt8(offset + 1) - type = buf.readUInt8(offset + 2) - if (!isValidDataSize(length, bufLength, 3)) { - return null - } - return decodeExt(buf, offset, type, length, 3) - case 0xc8: - // ext up to 2^16 - 1 bytes - length = buf.readUInt16BE(offset + 1) - type = buf.readUInt8(offset + 3) - if (!isValidDataSize(length, bufLength, 4)) { - return null - } - return decodeExt(buf, offset, type, length, 4) - case 0xc9: - // ext up to 2^32 - 1 bytes - length = buf.readUInt32BE(offset + 1) - type = buf.readUInt8(offset + 5) - if (!isValidDataSize(length, bufLength, 6)) { - return null + if (isPlainObject) { + for (let i = 0; i < 2 * length; i += 2) { + if (typeof result[i] !== 'string') { + isPlainObject = false + break } - return decodeExt(buf, offset, type, length, 6) + } } - if ((first & 0xf0) === 0x90) { - // we have an array with less than 15 elements - length = first & 0x0f - return decodeArray(buf, offset, length, 1) - } else if ((first & 0xf0) === 0x80) { - // we have a map with less than 15 elements - length = first & 0x0f - return decodeMap(buf, offset, length, 1) - } else if ((first & 0xe0) === 0xa0) { - // fixstr up to 31 bytes - length = first & 0x1f - if (isValidDataSize(length, bufLength, 1)) { - result = buf.toString('utf8', offset + 1, offset + length + 1) - return buildDecodeResult(result, length + 1) - } else { - return null + if (isPlainObject) { + const object = {} + for (let i = 0; i < 2 * length; i += 2) { + const key = result[i] + const val = result[i + 1] + + if (key === '__proto__') { + if (options.protoAction === 'error') { + throw new SyntaxError('Object contains forbidden prototype property') + } + + if (options.protoAction === 'remove') { + continue + } + } + + object[key] = val } - } else if (first >= 0xe0) { - // 5 bits negative ints - result = first - 0x100 - return buildDecodeResult(result, 1) - } else if (first < 0x80) { - // 7-bits positive ints - return buildDecodeResult(first, 1) + return [object, consumedBytes] } else { - throw new Error('not implemented yet') + const mapping = new Map() + for (let i = 0; i < 2 * length; i += 2) { + const key = result[i] + const val = result[i + 1] + mapping.set(key, val) + } + return [mapping, consumedBytes] } } function readInt64BE (buf, offset) { - var negate = (buf[offset] & 0x80) == 0x80 // eslint-disable-line + var negate = (buf[offset] & 0x80) == 0x80; // eslint-disable-line if (negate) { var carry = 1 @@ -413,433 +455,348 @@ module.exports = function buildDecode (decodingTypes) { return (hi * 4294967296 + lo) * (negate ? -1 : +1) } - function decodeArray (buf, offset, length, headerLength) { - var result = [] - var i - var totalBytesConsumed = 0 - - offset += headerLength - for (i = 0; i < length; i++) { - var decodeResult = tryDecode(buf, offset) - if (decodeResult) { - result.push(decodeResult.value) - offset += decodeResult.bytesConsumed - totalBytesConsumed += decodeResult.bytesConsumed - } else { - return null - } - } - return buildDecodeResult(result, headerLength + totalBytesConsumed) - } - - function decodeMap (buf, offset, length, headerLength) { - var result = {} - var key - var i - var totalBytesConsumed = 0 - - offset += headerLength - for (i = 0; i < length; i++) { - var keyResult = tryDecode(buf, offset) - if (keyResult) { - offset += keyResult.bytesConsumed - var valueResult = tryDecode(buf, offset) - if (valueResult) { - key = keyResult.value - result[key] = valueResult.value - offset += valueResult.bytesConsumed - totalBytesConsumed += (keyResult.bytesConsumed + valueResult.bytesConsumed) - } else { - return null - } - } else { - return null - } - } - return buildDecodeResult(result, headerLength + totalBytesConsumed) + function decodeUnsignedInt (buf, offset, size) { + const maxOffset = offset + size + var result = 0 + while (offset < maxOffset) { result += buf.readUInt8(offset++) * Math.pow(256, maxOffset - offset) } + return [result, size + 1] } - function decodeFixExt (buf, offset, size) { - var type = buf.readInt8(offset + 1) // Signed - return decodeExt(buf, offset, type, size, 2) + function decodeConstants (first) { + if (first === 0xc0) return [null, 1] + if (first === 0xc2) return [false, 1] + if (first === 0xc3) return [true, 1] } - function decodeTimestamp (buf, size, headerSize) { - var seconds, nanoseconds - nanoseconds = 0 - - switch (size) { - case 4: - // timestamp 32 stores the number of seconds that have elapsed since 1970-01-01 00:00:00 UTC in an 32-bit unsigned integer - seconds = buf.readUInt32BE() - break - case 8: // Timestamp 64 stores the number of seconds and nanoseconds that have elapsed - // since 1970-01-01 00:00:00 UTC in 32-bit unsigned integers, split 30/34 bits - var upper = buf.readUInt32BE() - var lower = buf.readUInt32BE(4) - nanoseconds = upper / 4 - seconds = ((upper & 0x03) * Math.pow(2, 32)) + lower // If we use bitwise operators, we get truncated to 32bits - break - - case 12: - throw new Error('timestamp 96 is not yet implemented') - } + function decodeSigned (buf, offset, size) { + var result + if (size === 1) result = buf.readInt8(offset) + if (size === 2) result = buf.readInt16BE(offset) + if (size === 4) result = buf.readInt32BE(offset) + if (size === 8) result = readInt64BE(buf.slice(offset, offset + 8), 0) + return [result, size + 1] + } - var millis = (seconds * 1000) + Math.round(nanoseconds / 1E6) - return buildDecodeResult(new Date(millis), size + headerSize) + function decodeFloat (buf, offset, size) { + var result + if (size === 4) result = buf.readFloatBE(offset) + if (size === 8) result = buf.readDoubleBE(offset) + return [result, size + 1] } function decodeExt (buf, offset, type, size, headerSize) { - var i, - toDecode - - offset += headerSize - - // Pre-defined - if (type < 0) { // Reserved for future extensions - switch (type) { - case -1: // Tiemstamp https://github.com/msgpack/msgpack/blob/master/spec.md#timestamp-extension-type - toDecode = buf.slice(offset, offset + size) - return decodeTimestamp(toDecode, size, headerSize) - } - } + const toDecode = buf.slice(offset, offset + size) - for (i = 0; i < decodingTypes.length; i++) { - if (type === decodingTypes[i].type) { - toDecode = buf.slice(offset, offset + size) - var value = decodingTypes[i].decode(toDecode) - return buildDecodeResult(value, headerSize + size) - } - } + const decode = decodingTypes.get(type) + if (!decode) throw new Error('unable to find ext type ' + type) - throw new Error('unable to find ext type ' + type) + var value = decode(toDecode) + return [value, headerSize + size] } } -module.exports.IncompleteBufferError = IncompleteBufferError - -},{"bl":7,"util":33}],3:[function(require,module,exports){ +},{"./helpers.js":5,"bl":12}],4:[function(require,module,exports){ 'use strict' var Buffer = require('safe-buffer').Buffer var bl = require('bl') -var TOLERANCE = 0.1 +var isFloat = require('./helpers.js').isFloat -module.exports = function buildEncode (encodingTypes, forceFloat64, compatibilityMode, disableTimestampEncoding) { - function encode (obj, avoidSlice) { - var buf, - len +module.exports = function buildEncode (encodingTypes, options) { + function encode (obj) { + if (obj === undefined) throw new Error('undefined is not encodable in msgpack!') - if (obj === undefined) { - throw new Error('undefined is not encodable in msgpack!') - } else if (obj === null) { - buf = Buffer.allocUnsafe(1) - buf[0] = 0xc0 - } else if (obj === true) { - buf = Buffer.allocUnsafe(1) - buf[0] = 0xc3 - } else if (obj === false) { - buf = Buffer.allocUnsafe(1) - buf[0] = 0xc2 - } else if (typeof obj === 'string') { - len = Buffer.byteLength(obj) - if (len < 32) { - buf = Buffer.allocUnsafe(1 + len) - buf[0] = 0xa0 | len - if (len > 0) { - buf.write(obj, 1) - } - } else if (len <= 0xff && !compatibilityMode) { - // str8, but only when not in compatibility mode - buf = Buffer.allocUnsafe(2 + len) - buf[0] = 0xd9 - buf[1] = len - buf.write(obj, 2) - } else if (len <= 0xffff) { - buf = Buffer.allocUnsafe(3 + len) - buf[0] = 0xda - buf.writeUInt16BE(len, 1) - buf.write(obj, 3) - } else { - buf = Buffer.allocUnsafe(5 + len) - buf[0] = 0xdb - buf.writeUInt32BE(len, 1) - buf.write(obj, 5) - } - } else if (obj && (obj.readUInt32LE || obj instanceof Uint8Array)) { + if (obj === null) return Buffer.from([ 0xc0 ]) + if (obj === true) return Buffer.from([ 0xc3 ]) + if (obj === false) return Buffer.from([ 0xc2 ]) + + if (obj instanceof Map) return encodeMap(obj, options, encode) + + if (typeof obj === 'string') return encodeString(obj, options) + + if (obj && (obj.readUInt32LE || obj instanceof Uint8Array)) { if (obj instanceof Uint8Array) { obj = Buffer.from(obj) } // weird hack to support Buffer // and Buffer-like objects - if (obj.length <= 0xff) { - buf = Buffer.allocUnsafe(2) - buf[0] = 0xc4 - buf[1] = obj.length - } else if (obj.length <= 0xffff) { - buf = Buffer.allocUnsafe(3) - buf[0] = 0xc5 - buf.writeUInt16BE(obj.length, 1) - } else { - buf = Buffer.allocUnsafe(5) - buf[0] = 0xc6 - buf.writeUInt32BE(obj.length, 1) - } - - buf = bl([buf, obj]) - } else if (Array.isArray(obj)) { - if (obj.length < 16) { - buf = Buffer.allocUnsafe(1) - buf[0] = 0x90 | obj.length - } else if (obj.length < 65536) { - buf = Buffer.allocUnsafe(3) - buf[0] = 0xdc - buf.writeUInt16BE(obj.length, 1) - } else { - buf = Buffer.allocUnsafe(5) - buf[0] = 0xdd - buf.writeUInt32BE(obj.length, 1) - } - - buf = obj.reduce(function (acc, obj) { - acc.append(encode(obj, true)) - return acc - }, bl().append(buf)) - } else if (!disableTimestampEncoding && typeof obj.getDate === 'function') { - return encodeDate(obj) - } else if (typeof obj === 'object') { - buf = encodeExt(obj) || encodeObject(obj) - } else if (typeof obj === 'number') { - if (isFloat(obj)) { - return encodeFloat(obj, forceFloat64) - } else if (obj >= 0) { - if (obj < 128) { - buf = Buffer.allocUnsafe(1) - buf[0] = obj - } else if (obj < 256) { - buf = Buffer.allocUnsafe(2) - buf[0] = 0xcc - buf[1] = obj - } else if (obj < 65536) { - buf = Buffer.allocUnsafe(3) - buf[0] = 0xcd - buf.writeUInt16BE(obj, 1) - } else if (obj <= 0xffffffff) { - buf = Buffer.allocUnsafe(5) - buf[0] = 0xce - buf.writeUInt32BE(obj, 1) - } else if (obj <= 9007199254740991) { - buf = Buffer.allocUnsafe(9) - buf[0] = 0xcf - write64BitUint(buf, obj) - } else { - return encodeFloat(obj, true) - } - } else { - if (obj >= -32) { - buf = Buffer.allocUnsafe(1) - buf[0] = 0x100 + obj - } else if (obj >= -128) { - buf = Buffer.allocUnsafe(2) - buf[0] = 0xd0 - buf.writeInt8(obj, 1) - } else if (obj >= -32768) { - buf = Buffer.allocUnsafe(3) - buf[0] = 0xd1 - buf.writeInt16BE(obj, 1) - } else if (obj > -214748365) { - buf = Buffer.allocUnsafe(5) - buf[0] = 0xd2 - buf.writeInt32BE(obj, 1) - } else if (obj >= -9007199254740991) { - buf = Buffer.allocUnsafe(9) - buf[0] = 0xd3 - write64BitInt(buf, 1, obj) - } else { - return encodeFloat(obj, true) - } - } + return bl([getBufferHeader(obj.length), obj]) } + if (Array.isArray(obj)) return encodeArray(obj, encode) + if (typeof obj === 'object') return encodeExt(obj, encodingTypes) || encodeObject(obj, options, encode) + if (typeof obj === 'number') return encodeNumber(obj, options) - if (!buf) { - throw new Error('not implemented yet') - } + throw new Error('not implemented yet') + } - if (avoidSlice) { - return buf - } else { - return buf.slice() - } + return function (obj) { + return encode(obj).slice() } +} - function encodeDate (dt) { - var encoded - var millis = dt * 1 - var seconds = Math.floor(millis / 1000) - var nanos = (millis - (seconds * 1000)) * 1E6 +// +// +// === MENTAL SEPARATOR === +// +// - if (nanos || seconds > 0xFFFFFFFF) { - // Timestamp64 - encoded = new Buffer(10) - encoded[0] = 0xd7 - encoded[1] = -1 +function encodeArray (array, encode) { + const acc = [ getHeader(array.length, 0x90, 0xdc) ] - var upperNanos = ((nanos * 4)) - var upperSeconds = seconds / Math.pow(2, 32) - var upper = (upperNanos + upperSeconds) & 0xFFFFFFFF - var lower = seconds & 0xFFFFFFFF + // This has to be forEach; Array.prototype.map preserves missing values and + // Array.prototype.values yields them as undefined + array.forEach(item => { + acc.push(encode(item)) + }) - encoded.writeInt32BE(upper, 2) - encoded.writeInt32BE(lower, 6) - } else { - // Timestamp32 - encoded = new Buffer(6) - encoded[0] = 0xd6 - encoded[1] = -1 - encoded.writeUInt32BE(Math.floor(millis / 1000), 2) - } - return bl().append(encoded) + if (acc.length !== array.length + 1) { + throw new Error('Sparse arrays are not encodable in msgpack') } - function encodeExt (obj) { - var i - var encoded - var length = -1 - var headers = [] + return bl(acc) +} - for (i = 0; i < encodingTypes.length; i++) { - if (encodingTypes[i].check(obj)) { - encoded = encodingTypes[i].encode(obj) - break - } - } +function encodeMap (map, options, encode) { + const acc = [ getHeader(map.size, 0x80, 0xde) ] + const keys = [ ...map.keys() ] - if (!encoded) { - return null - } - - // we subtract 1 because the length does not - // include the type - length = encoded.length - 1 - - if (length === 1) { - headers.push(0xd4) - } else if (length === 2) { - headers.push(0xd5) - } else if (length === 4) { - headers.push(0xd6) - } else if (length === 8) { - headers.push(0xd7) - } else if (length === 16) { - headers.push(0xd8) - } else if (length < 256) { - headers.push(0xc7) - headers.push(length) - } else if (length < 0x10000) { - headers.push(0xc8) - headers.push(length >> 8) - headers.push(length & 0x00ff) - } else { - headers.push(0xc9) - headers.push(length >> 24) - headers.push((length >> 16) & 0x000000ff) - headers.push((length >> 8) & 0x000000ff) - headers.push(length & 0x000000ff) + if (!options.preferMap) { + if (keys.every(item => typeof item === 'string')) { + console.warn('Map with string only keys will be deserialized as an object!') } - - return bl().append(Buffer.from(headers)).append(encoded) } - function encodeObject (obj) { - var acc = [] - var length = 0 - var key - var header + keys.forEach(key => { + acc.push(encode(key), encode(map.get(key))) + }) + return bl(acc) +} + +function encodeObject (obj, options, encode) { + var keys = [] - for (key in obj) { - if (obj.hasOwnProperty(key) && + for (let key in obj) { + if (obj.hasOwnProperty(key) && obj[key] !== undefined && typeof obj[key] !== 'function') { - ++length - acc.push(encode(key, true)) - acc.push(encode(obj[key], true)) - } - } - - if (length < 16) { - header = Buffer.allocUnsafe(1) - header[0] = 0x80 | length - } else { - header = Buffer.allocUnsafe(3) - header[0] = 0xde - header.writeUInt16BE(length, 1) + keys.push(key) } + } - acc.unshift(header) + const acc = [ getHeader(keys.length, 0x80, 0xde) ] - var result = acc.reduce(function (list, buf) { - return list.append(buf) - }, bl()) + if (options.sortKeys) keys.sort() - return result - } + keys.forEach(key => { + acc.push(encode(key), encode(obj[key])) + }) - return encode + return bl(acc) } -function write64BitUint (buf, obj) { - // Write long byte by byte, in big-endian order - for (var currByte = 7; currByte >= 0; currByte--) { - buf[currByte + 1] = (obj & 0xff) - obj = obj / 256 - } +function write64BitUint (buf, offset, num) { + var lo = num % 4294967296 + var hi = Math.floor(num / 4294967296) + + buf.writeUInt32BE(hi, offset + 0) + buf.writeUInt32BE(lo, offset + 4) } function write64BitInt (buf, offset, num) { var negate = num < 0 + num = Math.abs(num) + write64BitUint(buf, offset, num) + if (negate) negate64BitInt(buf, offset) +} - if (negate) { - num = Math.abs(num) - } +function negate64BitInt (buf, offset) { + var i = offset + 8 - var lo = num % 4294967296 - var hi = num / 4294967296 - buf.writeUInt32BE(Math.floor(hi), offset + 0) - buf.writeUInt32BE(lo, offset + 4) + // Optimization based on the fact that: + // buf[i] == 0x00 => (buf[i] ^ 0xff) + 1 = 0x100 = 0x00 + 1 curry - if (negate) { - var carry = 1 - for (var i = offset + 7; i >= offset; i--) { - var v = (buf[i] ^ 0xff) + carry - buf[i] = v & 0xff - carry = v >> 8 - } + while (i-- > offset) { + if (buf[i] === 0x00) continue + buf[i] = (buf[i] ^ 0xff) + 1 + break } -} -function isFloat (n) { - return n !== Math.floor(n) + while (i-- > offset) { + buf[i] = buf[i] ^ 0xff + } } +const fround = Math.fround + function encodeFloat (obj, forceFloat64) { var buf - buf = Buffer.allocUnsafe(5) - buf[0] = 0xca - buf.writeFloatBE(obj, 1) - - // FIXME is there a way to check if a - // value fits in a float? - if (forceFloat64 || Math.abs(obj - buf.readFloatBE(1)) > TOLERANCE) { + if (forceFloat64 || !fround || !Object.is(fround(obj), obj)) { buf = Buffer.allocUnsafe(9) buf[0] = 0xcb buf.writeDoubleBE(obj, 1) + } else { + buf = Buffer.allocUnsafe(5) + buf[0] = 0xca + buf.writeFloatBE(obj, 1) + } + + return buf +} + +function encodeExt (obj, encodingTypes) { + const codec = encodingTypes.find(codec => codec.check(obj)) + if (!codec) return null + const encoded = codec.encode(obj) + if (!encoded) return null + + return bl([ getExtHeader(encoded.length - 1), encoded ]) +} + +function getExtHeader (length) { + if (length === 1) return Buffer.from([ 0xd4 ]) + if (length === 2) return Buffer.from([ 0xd5 ]) + if (length === 4) return Buffer.from([ 0xd6 ]) + if (length === 8) return Buffer.from([ 0xd7 ]) + if (length === 16) return Buffer.from([ 0xd8 ]) + + if (length < 256) return Buffer.from([ 0xc7, length ]) + if (length < 0x10000) return Buffer.from([ 0xc8, length >> 8, length & 0x00ff ]) + return Buffer.from([ 0xc9, length >> 24, (length >> 16) & 0x000000ff, (length >> 8) & 0x000000ff, length & 0x000000ff ]) +} + +function getHeader (length, tag1, tag2) { + if (length < 16) return Buffer.from([ tag1 | length ]) + const size = length < 0x10000 ? 2 : 4 + var buf = Buffer.allocUnsafe(1 + size) + buf[0] = length < 0x10000 ? tag2 : tag2 + 1 + buf.writeUIntBE(length, 1, size) + + return buf +} + +function encodeString (obj, options) { + const len = Buffer.byteLength(obj) + var buf + if (len < 32) { + buf = Buffer.allocUnsafe(1 + len) + buf[0] = 0xa0 | len + if (len > 0) { + buf.write(obj, 1) + } + } else if (len <= 0xff && !options.compatibilityMode) { + // str8, but only when not in compatibility mode + buf = Buffer.allocUnsafe(2 + len) + buf[0] = 0xd9 + buf[1] = len + buf.write(obj, 2) + } else if (len <= 0xffff) { + buf = Buffer.allocUnsafe(3 + len) + buf[0] = 0xda + buf.writeUInt16BE(len, 1) + buf.write(obj, 3) + } else { + buf = Buffer.allocUnsafe(5 + len) + buf[0] = 0xdb + buf.writeUInt32BE(len, 1) + buf.write(obj, 5) } + return buf +} + +function getBufferHeader (length) { + var header + if (length <= 0xff) { + header = Buffer.allocUnsafe(2) + header[0] = 0xc4 + header[1] = length + } else if (length <= 0xffff) { + header = Buffer.allocUnsafe(3) + header[0] = 0xc5 + header.writeUInt16BE(length, 1) + } else { + header = Buffer.allocUnsafe(5) + header[0] = 0xc6 + header.writeUInt32BE(length, 1) + } + + return header +} +function encodeNumber (obj, options) { + var buf + if (isFloat(obj)) return encodeFloat(obj, options.forceFloat64) + if (Math.abs(obj) > 9007199254740991) { + return encodeFloat(obj, true) + } + + if (obj >= 0) { + if (obj < 128) { + return Buffer.from([ obj ]) + } else if (obj < 256) { + return Buffer.from([ 0xcc, obj ]) + } else if (obj < 65536) { + return Buffer.from([ 0xcd, 0xff & (obj >> 8), 0xff & (obj) ]) + } else if (obj <= 0xffffffff) { + return Buffer.from([ 0xce, 0xff & (obj >> 24), 0xff & (obj >> 16), 0xff & (obj >> 8), 0xff & (obj) ]) + } else if (obj <= 9007199254740991) { + buf = Buffer.allocUnsafe(9) + buf[0] = 0xcf + write64BitUint(buf, 1, obj) + } + } else { + if (obj >= -32) { + buf = Buffer.allocUnsafe(1) + buf[0] = 0x100 + obj + } else if (obj >= -128) { + buf = Buffer.allocUnsafe(2) + buf[0] = 0xd0 + buf.writeInt8(obj, 1) + } else if (obj >= -32768) { + buf = Buffer.allocUnsafe(3) + buf[0] = 0xd1 + buf.writeInt16BE(obj, 1) + } else if (obj > -214748365) { + buf = Buffer.allocUnsafe(5) + buf[0] = 0xd2 + buf.writeInt32BE(obj, 1) + } else if (obj >= -9007199254740991) { + buf = Buffer.allocUnsafe(9) + buf[0] = 0xd3 + write64BitInt(buf, 1, obj) + } + } return buf } -},{"bl":7,"safe-buffer":28}],4:[function(require,module,exports){ +// function order(num, n = 1, step = 2) { +// while (num = num >> step) n++; +// return n +// } + +},{"./helpers.js":5,"bl":12,"safe-buffer":35}],5:[function(require,module,exports){ +'use strict' + +var util = require('util') + +exports.IncompleteBufferError = IncompleteBufferError + +function IncompleteBufferError (message) { + Error.call(this) // super constructor + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor) // super helper method to include stack trace in error object + } + this.name = this.constructor.name + this.message = message || 'unable to decode' +} + +util.inherits(IncompleteBufferError, Error) + +exports.isFloat = function isFloat (n) { + return n % 1 !== 0 +} + +},{"util":40}],6:[function(require,module,exports){ 'use strict' var Transform = require('readable-stream').Transform @@ -867,6 +824,7 @@ function Encoder (opts) { } Base.call(this, opts) + this._wrap = ('wrap' in opts) && opts.wrap } inherits(Encoder, Base) @@ -875,7 +833,7 @@ Encoder.prototype._transform = function (obj, enc, done) { var buf = null try { - buf = this._msgpack.encode(obj).slice(0) + buf = this._msgpack.encode(this._wrap ? obj.value : obj).slice(0) } catch (err) { this.emit('error', err) return done() @@ -895,6 +853,7 @@ function Decoder (opts) { Base.call(this, opts) this._chunks = bl() + this._wrap = ('wrap' in opts) && opts.wrap } inherits(Decoder, Base) @@ -906,6 +865,9 @@ Decoder.prototype._transform = function (buf, enc, done) { try { var result = this._msgpack.decode(this._chunks) + if (this._wrap) { + result = {value: result} + } this.push(result) } catch (err) { if (err instanceof this._msgpack.IncompleteBufferError) { @@ -926,10 +888,12 @@ Decoder.prototype._transform = function (buf, enc, done) { module.exports.decoder = Decoder module.exports.encoder = Encoder -},{"bl":7,"inherits":13,"readable-stream":27}],5:[function(require,module,exports){ -(function (global){ +},{"bl":12,"inherits":18,"readable-stream":34}],7:[function(require,module,exports){ +(function (global){(function (){ 'use strict'; +var objectAssign = require('object-assign'); + // compare and isBuffer taken from https://github.com/feross/buffer/blob/680e9e5e488f22aac27599a57dc844a6315928dd/index.js // original notice: @@ -971,6 +935,8 @@ function isBuffer(b) { } // based on node assert, original notice: +// NB: The URL to the CommonJS spec is kept just for tradition. +// node-assert has evolved a lot since then, both in API and behavior. // http://wiki.commonjs.org/wiki/Unit_Testing/1.0 // @@ -1411,6 +1377,18 @@ assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) { assert.ifError = function(err) { if (err) throw err; }; +// Expose a strict only variant of assert +function strict(value, message) { + if (!value) fail(value, true, message, '==', strict); +} +assert.strict = objectAssign(strict, assert, { + equal: assert.strictEqual, + deepEqual: assert.deepStrictEqual, + notEqual: assert.notStrictEqual, + notDeepEqual: assert.notDeepStrictEqual +}); +assert.strict.strict = assert.strict; + var objectKeys = Object.keys || function (obj) { var keys = []; for (var key in obj) { @@ -1419,3092 +1397,2960 @@ var objectKeys = Object.keys || function (obj) { return keys; }; -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"util/":33}],6:[function(require,module,exports){ -'use strict' - -exports.byteLength = byteLength -exports.toByteArray = toByteArray -exports.fromByteArray = fromByteArray - -var lookup = [] -var revLookup = [] -var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array - -var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/' -for (var i = 0, len = code.length; i < len; ++i) { - lookup[i] = code[i] - revLookup[code.charCodeAt(i)] = i -} - -revLookup['-'.charCodeAt(0)] = 62 -revLookup['_'.charCodeAt(0)] = 63 - -function placeHoldersCount (b64) { - var len = b64.length - if (len % 4 > 0) { - throw new Error('Invalid string. Length must be a multiple of 4') +}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{"object-assign":21,"util/":10}],8:[function(require,module,exports){ +if (typeof Object.create === 'function') { + // implementation from standard node.js 'util' module + module.exports = function inherits(ctor, superCtor) { + ctor.super_ = superCtor + ctor.prototype = Object.create(superCtor.prototype, { + constructor: { + value: ctor, + enumerable: false, + writable: true, + configurable: true + } + }); + }; +} else { + // old school shim for old browsers + module.exports = function inherits(ctor, superCtor) { + ctor.super_ = superCtor + var TempCtor = function () {} + TempCtor.prototype = superCtor.prototype + ctor.prototype = new TempCtor() + ctor.prototype.constructor = ctor } - - // the number of equal signs (place holders) - // if there are two placeholders, than the two characters before it - // represent one byte - // if there is only one, then the three characters before it represent 2 bytes - // this is just a cheap hack to not do indexOf twice - return b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0 } -function byteLength (b64) { - // base64 is 4/3 + up to two characters of the original data - return (b64.length * 3 / 4) - placeHoldersCount(b64) +},{}],9:[function(require,module,exports){ +module.exports = function isBuffer(arg) { + return arg && typeof arg === 'object' + && typeof arg.copy === 'function' + && typeof arg.fill === 'function' + && typeof arg.readUInt8 === 'function'; } +},{}],10:[function(require,module,exports){ +(function (process,global){(function (){ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. -function toByteArray (b64) { - var i, l, tmp, placeHolders, arr - var len = b64.length - placeHolders = placeHoldersCount(b64) - - arr = new Arr((len * 3 / 4) - placeHolders) +var formatRegExp = /%[sdj%]/g; +exports.format = function(f) { + if (!isString(f)) { + var objects = []; + for (var i = 0; i < arguments.length; i++) { + objects.push(inspect(arguments[i])); + } + return objects.join(' '); + } - // if there are placeholders, only get up to the last complete 4 chars - l = placeHolders > 0 ? len - 4 : len + var i = 1; + var args = arguments; + var len = args.length; + var str = String(f).replace(formatRegExp, function(x) { + if (x === '%%') return '%'; + if (i >= len) return x; + switch (x) { + case '%s': return String(args[i++]); + case '%d': return Number(args[i++]); + case '%j': + try { + return JSON.stringify(args[i++]); + } catch (_) { + return '[Circular]'; + } + default: + return x; + } + }); + for (var x = args[i]; i < len; x = args[++i]) { + if (isNull(x) || !isObject(x)) { + str += ' ' + x; + } else { + str += ' ' + inspect(x); + } + } + return str; +}; - var L = 0 - for (i = 0; i < l; i += 4) { - tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)] - arr[L++] = (tmp >> 16) & 0xFF - arr[L++] = (tmp >> 8) & 0xFF - arr[L++] = tmp & 0xFF +// Mark that a method should not be used. +// Returns a modified function which warns once by default. +// If --no-deprecation is set, then it is a no-op. +exports.deprecate = function(fn, msg) { + // Allow for deprecating things in the process of starting up. + if (isUndefined(global.process)) { + return function() { + return exports.deprecate(fn, msg).apply(this, arguments); + }; } - if (placeHolders === 2) { - tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4) - arr[L++] = tmp & 0xFF - } else if (placeHolders === 1) { - tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2) - arr[L++] = (tmp >> 8) & 0xFF - arr[L++] = tmp & 0xFF + if (process.noDeprecation === true) { + return fn; } - return arr -} - -function tripletToBase64 (num) { - return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F] -} - -function encodeChunk (uint8, start, end) { - var tmp - var output = [] - for (var i = start; i < end; i += 3) { - tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2]) - output.push(tripletToBase64(tmp)) + var warned = false; + function deprecated() { + if (!warned) { + if (process.throwDeprecation) { + throw new Error(msg); + } else if (process.traceDeprecation) { + console.trace(msg); + } else { + console.error(msg); + } + warned = true; + } + return fn.apply(this, arguments); } - return output.join('') -} -function fromByteArray (uint8) { - var tmp - var len = uint8.length - var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes - var output = '' - var parts = [] - var maxChunkLength = 16383 // must be multiple of 3 + return deprecated; +}; - // go through the array every three bytes, we'll deal with trailing stuff later - for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) { - parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength))) - } - // pad the end with zeros, but make sure to not forget the extra bytes - if (extraBytes === 1) { - tmp = uint8[len - 1] - output += lookup[tmp >> 2] - output += lookup[(tmp << 4) & 0x3F] - output += '==' - } else if (extraBytes === 2) { - tmp = (uint8[len - 2] << 8) + (uint8[len - 1]) - output += lookup[tmp >> 10] - output += lookup[(tmp >> 4) & 0x3F] - output += lookup[(tmp << 2) & 0x3F] - output += '=' +var debugs = {}; +var debugEnviron; +exports.debuglog = function(set) { + if (isUndefined(debugEnviron)) + debugEnviron = process.env.NODE_DEBUG || ''; + set = set.toUpperCase(); + if (!debugs[set]) { + if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) { + var pid = process.pid; + debugs[set] = function() { + var msg = exports.format.apply(exports, arguments); + console.error('%s %d: %s', set, pid, msg); + }; + } else { + debugs[set] = function() {}; + } } + return debugs[set]; +}; - parts.push(output) - return parts.join('') +/** + * Echos the value of a value. Trys to print the value out + * in the best way possible given the different types. + * + * @param {Object} obj The object to print out. + * @param {Object} opts Optional options object that alters the output. + */ +/* legacy: obj, showHidden, depth, colors*/ +function inspect(obj, opts) { + // default options + var ctx = { + seen: [], + stylize: stylizeNoColor + }; + // legacy... + if (arguments.length >= 3) ctx.depth = arguments[2]; + if (arguments.length >= 4) ctx.colors = arguments[3]; + if (isBoolean(opts)) { + // legacy... + ctx.showHidden = opts; + } else if (opts) { + // got an "options" object + exports._extend(ctx, opts); + } + // set default options + if (isUndefined(ctx.showHidden)) ctx.showHidden = false; + if (isUndefined(ctx.depth)) ctx.depth = 2; + if (isUndefined(ctx.colors)) ctx.colors = false; + if (isUndefined(ctx.customInspect)) ctx.customInspect = true; + if (ctx.colors) ctx.stylize = stylizeWithColor; + return formatValue(ctx, obj, ctx.depth); } - -},{}],7:[function(require,module,exports){ -(function (Buffer){ -var DuplexStream = require('readable-stream/duplex') - , util = require('util') +exports.inspect = inspect; -function BufferList (callback) { - if (!(this instanceof BufferList)) - return new BufferList(callback) +// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics +inspect.colors = { + 'bold' : [1, 22], + 'italic' : [3, 23], + 'underline' : [4, 24], + 'inverse' : [7, 27], + 'white' : [37, 39], + 'grey' : [90, 39], + 'black' : [30, 39], + 'blue' : [34, 39], + 'cyan' : [36, 39], + 'green' : [32, 39], + 'magenta' : [35, 39], + 'red' : [31, 39], + 'yellow' : [33, 39] +}; - this._bufs = [] - this.length = 0 +// Don't use 'blue' not visible on cmd.exe +inspect.styles = { + 'special': 'cyan', + 'number': 'yellow', + 'boolean': 'yellow', + 'undefined': 'grey', + 'null': 'bold', + 'string': 'green', + 'date': 'magenta', + // "name": intentionally not styling + 'regexp': 'red' +}; - if (typeof callback == 'function') { - this._callback = callback - var piper = function piper (err) { - if (this._callback) { - this._callback(err) - this._callback = null - } - }.bind(this) +function stylizeWithColor(str, styleType) { + var style = inspect.styles[styleType]; - this.on('pipe', function onPipe (src) { - src.on('error', piper) - }) - this.on('unpipe', function onUnpipe (src) { - src.removeListener('error', piper) - }) + if (style) { + return '\u001b[' + inspect.colors[style][0] + 'm' + str + + '\u001b[' + inspect.colors[style][1] + 'm'; } else { - this.append(callback) + return str; } - - DuplexStream.call(this) } -util.inherits(BufferList, DuplexStream) - - -BufferList.prototype._offset = function _offset (offset) { - var tot = 0, i = 0, _t - if (offset === 0) return [ 0, 0 ] - for (; i < this._bufs.length; i++) { - _t = tot + this._bufs[i].length - if (offset < _t || i == this._bufs.length - 1) - return [ i, offset - tot ] - tot = _t - } +function stylizeNoColor(str, styleType) { + return str; } -BufferList.prototype.append = function append (buf) { - var i = 0 - - if (Buffer.isBuffer(buf)) { - this._appendBuffer(buf); - } else if (Array.isArray(buf)) { - for (; i < buf.length; i++) - this.append(buf[i]) - } else if (buf instanceof BufferList) { - // unwrap argument into individual BufferLists - for (; i < buf._bufs.length; i++) - this.append(buf._bufs[i]) - } else if (buf != null) { - // coerce number arguments to strings, since Buffer(number) does - // uninitialized memory allocation - if (typeof buf == 'number') - buf = buf.toString() +function arrayToHash(array) { + var hash = {}; - this._appendBuffer(new Buffer(buf)); - } + array.forEach(function(val, idx) { + hash[val] = true; + }); - return this + return hash; } -BufferList.prototype._appendBuffer = function appendBuffer (buf) { - this._bufs.push(buf) - this.length += buf.length -} +function formatValue(ctx, value, recurseTimes) { + // Provide a hook for user-specified inspect functions. + // Check that value is an object with an inspect function on it + if (ctx.customInspect && + value && + isFunction(value.inspect) && + // Filter out the util module, it's inspect function is special + value.inspect !== exports.inspect && + // Also filter out any prototype objects using the circular check. + !(value.constructor && value.constructor.prototype === value)) { + var ret = value.inspect(recurseTimes, ctx); + if (!isString(ret)) { + ret = formatValue(ctx, ret, recurseTimes); + } + return ret; + } + // Primitive types cannot have properties + var primitive = formatPrimitive(ctx, value); + if (primitive) { + return primitive; + } -BufferList.prototype._write = function _write (buf, encoding, callback) { - this._appendBuffer(buf) + // Look up the keys of the object. + var keys = Object.keys(value); + var visibleKeys = arrayToHash(keys); - if (typeof callback == 'function') - callback() -} + if (ctx.showHidden) { + keys = Object.getOwnPropertyNames(value); + } + // IE doesn't make error fields non-enumerable + // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx + if (isError(value) + && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) { + return formatError(value); + } -BufferList.prototype._read = function _read (size) { - if (!this.length) - return this.push(null) + // Some type of object without properties can be shortcutted. + if (keys.length === 0) { + if (isFunction(value)) { + var name = value.name ? ': ' + value.name : ''; + return ctx.stylize('[Function' + name + ']', 'special'); + } + if (isRegExp(value)) { + return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); + } + if (isDate(value)) { + return ctx.stylize(Date.prototype.toString.call(value), 'date'); + } + if (isError(value)) { + return formatError(value); + } + } - size = Math.min(size, this.length) - this.push(this.slice(0, size)) - this.consume(size) -} + var base = '', array = false, braces = ['{', '}']; + // Make Array say that they are Array + if (isArray(value)) { + array = true; + braces = ['[', ']']; + } -BufferList.prototype.end = function end (chunk) { - DuplexStream.prototype.end.call(this, chunk) + // Make functions say that they are functions + if (isFunction(value)) { + var n = value.name ? ': ' + value.name : ''; + base = ' [Function' + n + ']'; + } - if (this._callback) { - this._callback(null, this.slice()) - this._callback = null + // Make RegExps say that they are RegExps + if (isRegExp(value)) { + base = ' ' + RegExp.prototype.toString.call(value); } -} + // Make dates with properties first say the date + if (isDate(value)) { + base = ' ' + Date.prototype.toUTCString.call(value); + } -BufferList.prototype.get = function get (index) { - return this.slice(index, index + 1)[0] -} + // Make error with message first say the error + if (isError(value)) { + base = ' ' + formatError(value); + } + if (keys.length === 0 && (!array || value.length == 0)) { + return braces[0] + base + braces[1]; + } -BufferList.prototype.slice = function slice (start, end) { - if (typeof start == 'number' && start < 0) - start += this.length - if (typeof end == 'number' && end < 0) - end += this.length - return this.copy(null, 0, start, end) -} + if (recurseTimes < 0) { + if (isRegExp(value)) { + return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); + } else { + return ctx.stylize('[Object]', 'special'); + } + } + ctx.seen.push(value); -BufferList.prototype.copy = function copy (dst, dstStart, srcStart, srcEnd) { - if (typeof srcStart != 'number' || srcStart < 0) - srcStart = 0 - if (typeof srcEnd != 'number' || srcEnd > this.length) - srcEnd = this.length - if (srcStart >= this.length) - return dst || new Buffer(0) - if (srcEnd <= 0) - return dst || new Buffer(0) + var output; + if (array) { + output = formatArray(ctx, value, recurseTimes, visibleKeys, keys); + } else { + output = keys.map(function(key) { + return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array); + }); + } - var copy = !!dst - , off = this._offset(srcStart) - , len = srcEnd - srcStart - , bytes = len - , bufoff = (copy && dstStart) || 0 - , start = off[1] - , l - , i + ctx.seen.pop(); - // copy/slice everything - if (srcStart === 0 && srcEnd == this.length) { - if (!copy) { // slice, but full concat if multiple buffers - return this._bufs.length === 1 - ? this._bufs[0] - : Buffer.concat(this._bufs, this.length) - } + return reduceToSingleString(output, base, braces); +} - // copy, need to copy individual buffers - for (i = 0; i < this._bufs.length; i++) { - this._bufs[i].copy(dst, bufoff) - bufoff += this._bufs[i].length - } - return dst +function formatPrimitive(ctx, value) { + if (isUndefined(value)) + return ctx.stylize('undefined', 'undefined'); + if (isString(value)) { + var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '') + .replace(/'/g, "\\'") + .replace(/\\"/g, '"') + '\''; + return ctx.stylize(simple, 'string'); } + if (isNumber(value)) + return ctx.stylize('' + value, 'number'); + if (isBoolean(value)) + return ctx.stylize('' + value, 'boolean'); + // For some reason typeof null is "object", so special case here. + if (isNull(value)) + return ctx.stylize('null', 'null'); +} - // easy, cheap case where it's a subset of one of the buffers - if (bytes <= this._bufs[off[0]].length - start) { - return copy - ? this._bufs[off[0]].copy(dst, dstStart, start, start + bytes) - : this._bufs[off[0]].slice(start, start + bytes) - } - if (!copy) // a slice, we need something to copy in to - dst = new Buffer(len) +function formatError(value) { + return '[' + Error.prototype.toString.call(value) + ']'; +} - for (i = off[0]; i < this._bufs.length; i++) { - l = this._bufs[i].length - start - if (bytes > l) { - this._bufs[i].copy(dst, bufoff, start) +function formatArray(ctx, value, recurseTimes, visibleKeys, keys) { + var output = []; + for (var i = 0, l = value.length; i < l; ++i) { + if (hasOwnProperty(value, String(i))) { + output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, + String(i), true)); } else { - this._bufs[i].copy(dst, bufoff, start, start + bytes) - break + output.push(''); } - - bufoff += l - bytes -= l - - if (start) - start = 0 } - - return dst + keys.forEach(function(key) { + if (!key.match(/^\d+$/)) { + output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, + key, true)); + } + }); + return output; } -BufferList.prototype.shallowSlice = function shallowSlice (start, end) { - start = start || 0 - end = end || this.length - - if (start < 0) - start += this.length - if (end < 0) - end += this.length - - var startOffset = this._offset(start) - , endOffset = this._offset(end) - , buffers = this._bufs.slice(startOffset[0], endOffset[0] + 1) - if (endOffset[1] == 0) - buffers.pop() - else - buffers[buffers.length-1] = buffers[buffers.length-1].slice(0, endOffset[1]) - - if (startOffset[1] != 0) - buffers[0] = buffers[0].slice(startOffset[1]) - - return new BufferList(buffers) -} - -BufferList.prototype.toString = function toString (encoding, start, end) { - return this.slice(start, end).toString(encoding) -} - -BufferList.prototype.consume = function consume (bytes) { - while (this._bufs.length) { - if (bytes >= this._bufs[0].length) { - bytes -= this._bufs[0].length - this.length -= this._bufs[0].length - this._bufs.shift() +function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) { + var name, str, desc; + desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] }; + if (desc.get) { + if (desc.set) { + str = ctx.stylize('[Getter/Setter]', 'special'); } else { - this._bufs[0] = this._bufs[0].slice(bytes) - this.length -= bytes - break + str = ctx.stylize('[Getter]', 'special'); + } + } else { + if (desc.set) { + str = ctx.stylize('[Setter]', 'special'); } } - return this + if (!hasOwnProperty(visibleKeys, key)) { + name = '[' + key + ']'; + } + if (!str) { + if (ctx.seen.indexOf(desc.value) < 0) { + if (isNull(recurseTimes)) { + str = formatValue(ctx, desc.value, null); + } else { + str = formatValue(ctx, desc.value, recurseTimes - 1); + } + if (str.indexOf('\n') > -1) { + if (array) { + str = str.split('\n').map(function(line) { + return ' ' + line; + }).join('\n').substr(2); + } else { + str = '\n' + str.split('\n').map(function(line) { + return ' ' + line; + }).join('\n'); + } + } + } else { + str = ctx.stylize('[Circular]', 'special'); + } + } + if (isUndefined(name)) { + if (array && key.match(/^\d+$/)) { + return str; + } + name = JSON.stringify('' + key); + if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) { + name = name.substr(1, name.length - 2); + name = ctx.stylize(name, 'name'); + } else { + name = name.replace(/'/g, "\\'") + .replace(/\\"/g, '"') + .replace(/(^"|"$)/g, "'"); + name = ctx.stylize(name, 'string'); + } + } + + return name + ': ' + str; } -BufferList.prototype.duplicate = function duplicate () { - var i = 0 - , copy = new BufferList() +function reduceToSingleString(output, base, braces) { + var numLinesEst = 0; + var length = output.reduce(function(prev, cur) { + numLinesEst++; + if (cur.indexOf('\n') >= 0) numLinesEst++; + return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1; + }, 0); - for (; i < this._bufs.length; i++) - copy.append(this._bufs[i]) + if (length > 60) { + return braces[0] + + (base === '' ? '' : base + '\n ') + + ' ' + + output.join(',\n ') + + ' ' + + braces[1]; + } - return copy + return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1]; } -BufferList.prototype.destroy = function destroy () { - this._bufs.length = 0 - this.length = 0 - this.push(null) +// NOTE: These type checking functions intentionally don't use `instanceof` +// because it is fragile and can be easily faked with `Object.create()`. +function isArray(ar) { + return Array.isArray(ar); } +exports.isArray = isArray; +function isBoolean(arg) { + return typeof arg === 'boolean'; +} +exports.isBoolean = isBoolean; -;(function () { - var methods = { - 'readDoubleBE' : 8 - , 'readDoubleLE' : 8 - , 'readFloatBE' : 4 - , 'readFloatLE' : 4 - , 'readInt32BE' : 4 - , 'readInt32LE' : 4 - , 'readUInt32BE' : 4 - , 'readUInt32LE' : 4 - , 'readInt16BE' : 2 - , 'readInt16LE' : 2 - , 'readUInt16BE' : 2 - , 'readUInt16LE' : 2 - , 'readInt8' : 1 - , 'readUInt8' : 1 - } +function isNull(arg) { + return arg === null; +} +exports.isNull = isNull; - for (var m in methods) { - (function (m) { - BufferList.prototype[m] = function (offset) { - return this.slice(offset, offset + methods[m])[m](0) - } - }(m)) - } -}()) +function isNullOrUndefined(arg) { + return arg == null; +} +exports.isNullOrUndefined = isNullOrUndefined; +function isNumber(arg) { + return typeof arg === 'number'; +} +exports.isNumber = isNumber; -module.exports = BufferList +function isString(arg) { + return typeof arg === 'string'; +} +exports.isString = isString; -}).call(this,require("buffer").Buffer) -},{"buffer":9,"readable-stream/duplex":18,"util":33}],8:[function(require,module,exports){ +function isSymbol(arg) { + return typeof arg === 'symbol'; +} +exports.isSymbol = isSymbol; -},{}],9:[function(require,module,exports){ -/*! - * The buffer module from node.js, for the browser. - * - * @author Feross Aboukhadijeh - * @license MIT - */ -/* eslint-disable no-proto */ +function isUndefined(arg) { + return arg === void 0; +} +exports.isUndefined = isUndefined; -'use strict' +function isRegExp(re) { + return isObject(re) && objectToString(re) === '[object RegExp]'; +} +exports.isRegExp = isRegExp; -var base64 = require('base64-js') -var ieee754 = require('ieee754') +function isObject(arg) { + return typeof arg === 'object' && arg !== null; +} +exports.isObject = isObject; -exports.Buffer = Buffer -exports.SlowBuffer = SlowBuffer -exports.INSPECT_MAX_BYTES = 50 +function isDate(d) { + return isObject(d) && objectToString(d) === '[object Date]'; +} +exports.isDate = isDate; -var K_MAX_LENGTH = 0x7fffffff -exports.kMaxLength = K_MAX_LENGTH +function isError(e) { + return isObject(e) && + (objectToString(e) === '[object Error]' || e instanceof Error); +} +exports.isError = isError; -/** - * If `Buffer.TYPED_ARRAY_SUPPORT`: - * === true Use Uint8Array implementation (fastest) - * === false Print warning and recommend using `buffer` v4.x which has an Object - * implementation (most compatible, even IE6) - * - * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+, - * Opera 11.6+, iOS 4.2+. - * - * We report that the browser does not support typed arrays if the are not subclassable - * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array` - * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support - * for __proto__ and has a buggy typed array implementation. - */ -Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport() +function isFunction(arg) { + return typeof arg === 'function'; +} +exports.isFunction = isFunction; -if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' && - typeof console.error === 'function') { - console.error( - 'This browser lacks typed array (Uint8Array) support which is required by ' + - '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.' - ) +function isPrimitive(arg) { + return arg === null || + typeof arg === 'boolean' || + typeof arg === 'number' || + typeof arg === 'string' || + typeof arg === 'symbol' || // ES6 symbol + typeof arg === 'undefined'; } +exports.isPrimitive = isPrimitive; -function typedArraySupport () { - // Can typed array instances can be augmented? - try { - var arr = new Uint8Array(1) - arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }} - return arr.foo() === 42 - } catch (e) { - return false - } +exports.isBuffer = require('./support/isBuffer'); + +function objectToString(o) { + return Object.prototype.toString.call(o); } -function createBuffer (length) { - if (length > K_MAX_LENGTH) { - throw new RangeError('Invalid typed array length') - } - // Return an augmented `Uint8Array` instance - var buf = new Uint8Array(length) - buf.__proto__ = Buffer.prototype - return buf + +function pad(n) { + return n < 10 ? '0' + n.toString(10) : n.toString(10); } -/** - * The Buffer constructor returns instances of `Uint8Array` that have their - * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of - * `Uint8Array`, so the returned instances will have all the node `Buffer` methods - * and the `Uint8Array` methods. Square bracket notation works as expected -- it - * returns a single octet. - * - * The `Uint8Array` prototype remains unmodified. - */ -function Buffer (arg, encodingOrOffset, length) { - // Common case. - if (typeof arg === 'number') { - if (typeof encodingOrOffset === 'string') { - throw new Error( - 'If encoding is specified then the first argument must be a string' - ) - } - return allocUnsafe(arg) - } - return from(arg, encodingOrOffset, length) -} +var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', + 'Oct', 'Nov', 'Dec']; -// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97 -if (typeof Symbol !== 'undefined' && Symbol.species && - Buffer[Symbol.species] === Buffer) { - Object.defineProperty(Buffer, Symbol.species, { - value: null, - configurable: true, - enumerable: false, - writable: false - }) +// 26 Feb 16:19:34 +function timestamp() { + var d = new Date(); + var time = [pad(d.getHours()), + pad(d.getMinutes()), + pad(d.getSeconds())].join(':'); + return [d.getDate(), months[d.getMonth()], time].join(' '); } -Buffer.poolSize = 8192 // not used by this implementation - -function from (value, encodingOrOffset, length) { - if (typeof value === 'number') { - throw new TypeError('"value" argument must not be a number') - } - - if (isArrayBuffer(value)) { - return fromArrayBuffer(value, encodingOrOffset, length) - } - if (typeof value === 'string') { - return fromString(value, encodingOrOffset) - } +// log is just a thin wrapper to console.log that prepends a timestamp +exports.log = function() { + console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments)); +}; - return fromObject(value) -} /** - * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError - * if value is a number. - * Buffer.from(str[, encoding]) - * Buffer.from(array) - * Buffer.from(buffer) - * Buffer.from(arrayBuffer[, byteOffset[, length]]) - **/ -Buffer.from = function (value, encodingOrOffset, length) { - return from(value, encodingOrOffset, length) -} + * Inherit the prototype methods from one constructor into another. + * + * The Function.prototype.inherits from lang.js rewritten as a standalone + * function (not on Function.prototype). NOTE: If this file is to be loaded + * during bootstrapping this function needs to be rewritten using some native + * functions as prototype setup using normal JavaScript does not work as + * expected during bootstrapping (see mirror.js in r114903). + * + * @param {function} ctor Constructor function which needs to inherit the + * prototype. + * @param {function} superCtor Constructor function to inherit prototype from. + */ +exports.inherits = require('inherits'); -// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug: -// https://github.com/feross/buffer/pull/148 -Buffer.prototype.__proto__ = Uint8Array.prototype -Buffer.__proto__ = Uint8Array +exports._extend = function(origin, add) { + // Don't do anything if add isn't an object + if (!add || !isObject(add)) return origin; -function assertSize (size) { - if (typeof size !== 'number') { - throw new TypeError('"size" argument must be a number') - } else if (size < 0) { - throw new RangeError('"size" argument must not be negative') + var keys = Object.keys(add); + var i = keys.length; + while (i--) { + origin[keys[i]] = add[keys[i]]; } -} + return origin; +}; -function alloc (size, fill, encoding) { - assertSize(size) - if (size <= 0) { - return createBuffer(size) - } - if (fill !== undefined) { - // Only pay attention to encoding if it's a string. This - // prevents accidentally sending in a number that would - // be interpretted as a start offset. - return typeof encoding === 'string' - ? createBuffer(size).fill(fill, encoding) - : createBuffer(size).fill(fill) - } - return createBuffer(size) +function hasOwnProperty(obj, prop) { + return Object.prototype.hasOwnProperty.call(obj, prop); } -/** - * Creates a new filled Buffer instance. - * alloc(size[, fill[, encoding]]) - **/ -Buffer.alloc = function (size, fill, encoding) { - return alloc(size, fill, encoding) -} +}).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{"./support/isBuffer":9,"_process":23,"inherits":8}],11:[function(require,module,exports){ +'use strict' -function allocUnsafe (size) { - assertSize(size) - return createBuffer(size < 0 ? 0 : checked(size) | 0) -} +exports.byteLength = byteLength +exports.toByteArray = toByteArray +exports.fromByteArray = fromByteArray -/** - * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance. - * */ -Buffer.allocUnsafe = function (size) { - return allocUnsafe(size) -} -/** - * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance. - */ -Buffer.allocUnsafeSlow = function (size) { - return allocUnsafe(size) +var lookup = [] +var revLookup = [] +var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array + +var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/' +for (var i = 0, len = code.length; i < len; ++i) { + lookup[i] = code[i] + revLookup[code.charCodeAt(i)] = i } -function fromString (string, encoding) { - if (typeof encoding !== 'string' || encoding === '') { - encoding = 'utf8' - } +// Support decoding URL-safe base64 strings, as Node.js does. +// See: https://en.wikipedia.org/wiki/Base64#URL_applications +revLookup['-'.charCodeAt(0)] = 62 +revLookup['_'.charCodeAt(0)] = 63 - if (!Buffer.isEncoding(encoding)) { - throw new TypeError('"encoding" must be a valid string encoding') - } +function getLens (b64) { + var len = b64.length - var length = byteLength(string, encoding) | 0 - var buf = createBuffer(length) + if (len % 4 > 0) { + throw new Error('Invalid string. Length must be a multiple of 4') + } - var actual = buf.write(string, encoding) + // Trim off extra bytes after placeholder bytes are found + // See: https://github.com/beatgammit/base64-js/issues/42 + var validLen = b64.indexOf('=') + if (validLen === -1) validLen = len - if (actual !== length) { - // Writing a hex string, for example, that contains invalid characters will - // cause everything after the first invalid character to be ignored. (e.g. - // 'abxxcd' will be treated as 'ab') - buf = buf.slice(0, actual) - } + var placeHoldersLen = validLen === len + ? 0 + : 4 - (validLen % 4) - return buf + return [validLen, placeHoldersLen] } -function fromArrayLike (array) { - var length = array.length < 0 ? 0 : checked(array.length) | 0 - var buf = createBuffer(length) - for (var i = 0; i < length; i += 1) { - buf[i] = array[i] & 255 - } - return buf +// base64 is 4/3 + up to two characters of the original data +function byteLength (b64) { + var lens = getLens(b64) + var validLen = lens[0] + var placeHoldersLen = lens[1] + return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen } -function fromArrayBuffer (array, byteOffset, length) { - if (byteOffset < 0 || array.byteLength < byteOffset) { - throw new RangeError('\'offset\' is out of bounds') - } - - if (array.byteLength < byteOffset + (length || 0)) { - throw new RangeError('\'length\' is out of bounds') - } +function _byteLength (b64, validLen, placeHoldersLen) { + return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen +} - var buf - if (byteOffset === undefined && length === undefined) { - buf = new Uint8Array(array) - } else if (length === undefined) { - buf = new Uint8Array(array, byteOffset) - } else { - buf = new Uint8Array(array, byteOffset, length) - } +function toByteArray (b64) { + var tmp + var lens = getLens(b64) + var validLen = lens[0] + var placeHoldersLen = lens[1] - // Return an augmented `Uint8Array` instance - buf.__proto__ = Buffer.prototype - return buf -} + var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen)) -function fromObject (obj) { - if (Buffer.isBuffer(obj)) { - var len = checked(obj.length) | 0 - var buf = createBuffer(len) + var curByte = 0 - if (buf.length === 0) { - return buf - } + // if there are placeholders, only get up to the last complete 4 chars + var len = placeHoldersLen > 0 + ? validLen - 4 + : validLen - obj.copy(buf, 0, 0, len) - return buf + var i + for (i = 0; i < len; i += 4) { + tmp = + (revLookup[b64.charCodeAt(i)] << 18) | + (revLookup[b64.charCodeAt(i + 1)] << 12) | + (revLookup[b64.charCodeAt(i + 2)] << 6) | + revLookup[b64.charCodeAt(i + 3)] + arr[curByte++] = (tmp >> 16) & 0xFF + arr[curByte++] = (tmp >> 8) & 0xFF + arr[curByte++] = tmp & 0xFF } - if (obj) { - if (isArrayBufferView(obj) || 'length' in obj) { - if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) { - return createBuffer(0) - } - return fromArrayLike(obj) - } + if (placeHoldersLen === 2) { + tmp = + (revLookup[b64.charCodeAt(i)] << 2) | + (revLookup[b64.charCodeAt(i + 1)] >> 4) + arr[curByte++] = tmp & 0xFF + } - if (obj.type === 'Buffer' && Array.isArray(obj.data)) { - return fromArrayLike(obj.data) - } + if (placeHoldersLen === 1) { + tmp = + (revLookup[b64.charCodeAt(i)] << 10) | + (revLookup[b64.charCodeAt(i + 1)] << 4) | + (revLookup[b64.charCodeAt(i + 2)] >> 2) + arr[curByte++] = (tmp >> 8) & 0xFF + arr[curByte++] = tmp & 0xFF } - throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.') + return arr } -function checked (length) { - // Note: cannot use `length < K_MAX_LENGTH` here because that fails when - // length is NaN (which is otherwise coerced to zero.) - if (length >= K_MAX_LENGTH) { - throw new RangeError('Attempt to allocate Buffer larger than maximum ' + - 'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes') - } - return length | 0 +function tripletToBase64 (num) { + return lookup[num >> 18 & 0x3F] + + lookup[num >> 12 & 0x3F] + + lookup[num >> 6 & 0x3F] + + lookup[num & 0x3F] } -function SlowBuffer (length) { - if (+length != length) { // eslint-disable-line eqeqeq - length = 0 +function encodeChunk (uint8, start, end) { + var tmp + var output = [] + for (var i = start; i < end; i += 3) { + tmp = + ((uint8[i] << 16) & 0xFF0000) + + ((uint8[i + 1] << 8) & 0xFF00) + + (uint8[i + 2] & 0xFF) + output.push(tripletToBase64(tmp)) } - return Buffer.alloc(+length) + return output.join('') } -Buffer.isBuffer = function isBuffer (b) { - return b != null && b._isBuffer === true -} +function fromByteArray (uint8) { + var tmp + var len = uint8.length + var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes + var parts = [] + var maxChunkLength = 16383 // must be multiple of 3 -Buffer.compare = function compare (a, b) { - if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) { - throw new TypeError('Arguments must be Buffers') + // go through the array every three bytes, we'll deal with trailing stuff later + for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) { + parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength))) } - if (a === b) return 0 - - var x = a.length - var y = b.length - - for (var i = 0, len = Math.min(x, y); i < len; ++i) { - if (a[i] !== b[i]) { - x = a[i] - y = b[i] - break - } + // pad the end with zeros, but make sure to not forget the extra bytes + if (extraBytes === 1) { + tmp = uint8[len - 1] + parts.push( + lookup[tmp >> 2] + + lookup[(tmp << 4) & 0x3F] + + '==' + ) + } else if (extraBytes === 2) { + tmp = (uint8[len - 2] << 8) + uint8[len - 1] + parts.push( + lookup[tmp >> 10] + + lookup[(tmp >> 4) & 0x3F] + + lookup[(tmp << 2) & 0x3F] + + '=' + ) } - if (x < y) return -1 - if (y < x) return 1 - return 0 + return parts.join('') } -Buffer.isEncoding = function isEncoding (encoding) { - switch (String(encoding).toLowerCase()) { - case 'hex': - case 'utf8': - case 'utf-8': - case 'ascii': - case 'latin1': - case 'binary': - case 'base64': - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return true - default: - return false - } -} +},{}],12:[function(require,module,exports){ +'use strict' +var DuplexStream = require('readable-stream').Duplex + , util = require('util') + , Buffer = require('safe-buffer').Buffer -Buffer.concat = function concat (list, length) { - if (!Array.isArray(list)) { - throw new TypeError('"list" argument must be an Array of Buffers') - } +function BufferList (callback) { + if (!(this instanceof BufferList)) + return new BufferList(callback) - if (list.length === 0) { - return Buffer.alloc(0) - } + this._bufs = [] + this.length = 0 - var i - if (length === undefined) { - length = 0 - for (i = 0; i < list.length; ++i) { - length += list[i].length - } - } + if (typeof callback == 'function') { + this._callback = callback - var buffer = Buffer.allocUnsafe(length) - var pos = 0 - for (i = 0; i < list.length; ++i) { - var buf = list[i] - if (!Buffer.isBuffer(buf)) { - throw new TypeError('"list" argument must be an Array of Buffers') - } - buf.copy(buffer, pos) - pos += buf.length - } - return buffer -} + var piper = function piper (err) { + if (this._callback) { + this._callback(err) + this._callback = null + } + }.bind(this) -function byteLength (string, encoding) { - if (Buffer.isBuffer(string)) { - return string.length - } - if (isArrayBufferView(string) || isArrayBuffer(string)) { - return string.byteLength - } - if (typeof string !== 'string') { - string = '' + string + this.on('pipe', function onPipe (src) { + src.on('error', piper) + }) + this.on('unpipe', function onUnpipe (src) { + src.removeListener('error', piper) + }) + } else { + this.append(callback) } - var len = string.length - if (len === 0) return 0 - - // Use a for loop to avoid recursion - var loweredCase = false - for (;;) { - switch (encoding) { - case 'ascii': - case 'latin1': - case 'binary': - return len - case 'utf8': - case 'utf-8': - case undefined: - return utf8ToBytes(string).length - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return len * 2 - case 'hex': - return len >>> 1 - case 'base64': - return base64ToBytes(string).length - default: - if (loweredCase) return utf8ToBytes(string).length // assume utf8 - encoding = ('' + encoding).toLowerCase() - loweredCase = true - } - } + DuplexStream.call(this) } -Buffer.byteLength = byteLength -function slowToString (encoding, start, end) { - var loweredCase = false - // No need to verify that "this.length <= MAX_UINT32" since it's a read-only - // property of a typed array. +util.inherits(BufferList, DuplexStream) - // This behaves neither like String nor Uint8Array in that we set start/end - // to their upper/lower bounds if the value passed is out of range. - // undefined is handled specially as per ECMA-262 6th Edition, - // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization. - if (start === undefined || start < 0) { - start = 0 - } - // Return early if start > this.length. Done here to prevent potential uint32 - // coercion fail below. - if (start > this.length) { - return '' - } - if (end === undefined || end > this.length) { - end = this.length +BufferList.prototype._offset = function _offset (offset) { + var tot = 0, i = 0, _t + if (offset === 0) return [ 0, 0 ] + for (; i < this._bufs.length; i++) { + _t = tot + this._bufs[i].length + if (offset < _t || i == this._bufs.length - 1) { + return [ i, offset - tot ] + } + tot = _t } +} - if (end <= 0) { - return '' +BufferList.prototype._reverseOffset = function (blOffset) { + var bufferId = blOffset[0] + var offset = blOffset[1] + for (var i = 0; i < bufferId; i++) { + offset += this._bufs[i].length } + return offset +} - // Force coersion to uint32. This will also coerce falsey/NaN values to 0. - end >>>= 0 - start >>>= 0 +BufferList.prototype.append = function append (buf) { + var i = 0 - if (end <= start) { - return '' + if (Buffer.isBuffer(buf)) { + this._appendBuffer(buf) + } else if (Array.isArray(buf)) { + for (; i < buf.length; i++) + this.append(buf[i]) + } else if (buf instanceof BufferList) { + // unwrap argument into individual BufferLists + for (; i < buf._bufs.length; i++) + this.append(buf._bufs[i]) + } else if (buf != null) { + // coerce number arguments to strings, since Buffer(number) does + // uninitialized memory allocation + if (typeof buf == 'number') + buf = buf.toString() + + this._appendBuffer(Buffer.from(buf)) } - if (!encoding) encoding = 'utf8' + return this +} - while (true) { - switch (encoding) { - case 'hex': - return hexSlice(this, start, end) - case 'utf8': - case 'utf-8': - return utf8Slice(this, start, end) +BufferList.prototype._appendBuffer = function appendBuffer (buf) { + this._bufs.push(buf) + this.length += buf.length +} - case 'ascii': - return asciiSlice(this, start, end) - case 'latin1': - case 'binary': - return latin1Slice(this, start, end) +BufferList.prototype._write = function _write (buf, encoding, callback) { + this._appendBuffer(buf) - case 'base64': - return base64Slice(this, start, end) + if (typeof callback == 'function') + callback() +} - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return utf16leSlice(this, start, end) - default: - if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding) - encoding = (encoding + '').toLowerCase() - loweredCase = true - } - } +BufferList.prototype._read = function _read (size) { + if (!this.length) + return this.push(null) + + size = Math.min(size, this.length) + this.push(this.slice(0, size)) + this.consume(size) } -// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package) -// to detect a Buffer instance. It's not possible to use `instanceof Buffer` -// reliably in a browserify context because there could be multiple different -// copies of the 'buffer' package in use. This method works even for Buffer -// instances that were created from another copy of the `buffer` package. -// See: https://github.com/feross/buffer/issues/154 -Buffer.prototype._isBuffer = true -function swap (b, n, m) { - var i = b[n] - b[n] = b[m] - b[m] = i -} +BufferList.prototype.end = function end (chunk) { + DuplexStream.prototype.end.call(this, chunk) -Buffer.prototype.swap16 = function swap16 () { - var len = this.length - if (len % 2 !== 0) { - throw new RangeError('Buffer size must be a multiple of 16-bits') - } - for (var i = 0; i < len; i += 2) { - swap(this, i, i + 1) + if (this._callback) { + this._callback(null, this.slice()) + this._callback = null } - return this } -Buffer.prototype.swap32 = function swap32 () { - var len = this.length - if (len % 4 !== 0) { - throw new RangeError('Buffer size must be a multiple of 32-bits') - } - for (var i = 0; i < len; i += 4) { - swap(this, i, i + 3) - swap(this, i + 1, i + 2) - } - return this -} -Buffer.prototype.swap64 = function swap64 () { - var len = this.length - if (len % 8 !== 0) { - throw new RangeError('Buffer size must be a multiple of 64-bits') - } - for (var i = 0; i < len; i += 8) { - swap(this, i, i + 7) - swap(this, i + 1, i + 6) - swap(this, i + 2, i + 5) - swap(this, i + 3, i + 4) +BufferList.prototype.get = function get (index) { + if (index > this.length || index < 0) { + return undefined } - return this + var offset = this._offset(index) + return this._bufs[offset[0]][offset[1]] } -Buffer.prototype.toString = function toString () { - var length = this.length - if (length === 0) return '' - if (arguments.length === 0) return utf8Slice(this, 0, length) - return slowToString.apply(this, arguments) + +BufferList.prototype.slice = function slice (start, end) { + if (typeof start == 'number' && start < 0) + start += this.length + if (typeof end == 'number' && end < 0) + end += this.length + return this.copy(null, 0, start, end) } -Buffer.prototype.equals = function equals (b) { - if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer') - if (this === b) return true - return Buffer.compare(this, b) === 0 -} -Buffer.prototype.inspect = function inspect () { - var str = '' - var max = exports.INSPECT_MAX_BYTES - if (this.length > 0) { - str = this.toString('hex', 0, max).match(/.{2}/g).join(' ') - if (this.length > max) str += ' ... ' - } - return '' -} +BufferList.prototype.copy = function copy (dst, dstStart, srcStart, srcEnd) { + if (typeof srcStart != 'number' || srcStart < 0) + srcStart = 0 + if (typeof srcEnd != 'number' || srcEnd > this.length) + srcEnd = this.length + if (srcStart >= this.length) + return dst || Buffer.alloc(0) + if (srcEnd <= 0) + return dst || Buffer.alloc(0) -Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) { - if (!Buffer.isBuffer(target)) { - throw new TypeError('Argument must be a Buffer') - } + var copy = !!dst + , off = this._offset(srcStart) + , len = srcEnd - srcStart + , bytes = len + , bufoff = (copy && dstStart) || 0 + , start = off[1] + , l + , i - if (start === undefined) { - start = 0 - } - if (end === undefined) { - end = target ? target.length : 0 - } - if (thisStart === undefined) { - thisStart = 0 - } - if (thisEnd === undefined) { - thisEnd = this.length - } + // copy/slice everything + if (srcStart === 0 && srcEnd == this.length) { + if (!copy) { // slice, but full concat if multiple buffers + return this._bufs.length === 1 + ? this._bufs[0] + : Buffer.concat(this._bufs, this.length) + } - if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) { - throw new RangeError('out of range index') + // copy, need to copy individual buffers + for (i = 0; i < this._bufs.length; i++) { + this._bufs[i].copy(dst, bufoff) + bufoff += this._bufs[i].length + } + + return dst } - if (thisStart >= thisEnd && start >= end) { - return 0 + // easy, cheap case where it's a subset of one of the buffers + if (bytes <= this._bufs[off[0]].length - start) { + return copy + ? this._bufs[off[0]].copy(dst, dstStart, start, start + bytes) + : this._bufs[off[0]].slice(start, start + bytes) } - if (thisStart >= thisEnd) { - return -1 + + if (!copy) // a slice, we need something to copy in to + dst = Buffer.allocUnsafe(len) + + for (i = off[0]; i < this._bufs.length; i++) { + l = this._bufs[i].length - start + + if (bytes > l) { + this._bufs[i].copy(dst, bufoff, start) + bufoff += l + } else { + this._bufs[i].copy(dst, bufoff, start, start + bytes) + bufoff += l + break + } + + bytes -= l + + if (start) + start = 0 } - if (start >= end) { - return 1 + + // safeguard so that we don't return uninitialized memory + if (dst.length > bufoff) return dst.slice(0, bufoff) + + return dst +} + +BufferList.prototype.shallowSlice = function shallowSlice (start, end) { + start = start || 0 + end = typeof end !== 'number' ? this.length : end + + if (start < 0) + start += this.length + if (end < 0) + end += this.length + + if (start === end) { + return new BufferList() } + var startOffset = this._offset(start) + , endOffset = this._offset(end) + , buffers = this._bufs.slice(startOffset[0], endOffset[0] + 1) - start >>>= 0 - end >>>= 0 - thisStart >>>= 0 - thisEnd >>>= 0 + if (endOffset[1] == 0) + buffers.pop() + else + buffers[buffers.length-1] = buffers[buffers.length-1].slice(0, endOffset[1]) - if (this === target) return 0 + if (startOffset[1] != 0) + buffers[0] = buffers[0].slice(startOffset[1]) - var x = thisEnd - thisStart - var y = end - start - var len = Math.min(x, y) + return new BufferList(buffers) +} - var thisCopy = this.slice(thisStart, thisEnd) - var targetCopy = target.slice(start, end) +BufferList.prototype.toString = function toString (encoding, start, end) { + return this.slice(start, end).toString(encoding) +} - for (var i = 0; i < len; ++i) { - if (thisCopy[i] !== targetCopy[i]) { - x = thisCopy[i] - y = targetCopy[i] +BufferList.prototype.consume = function consume (bytes) { + // first, normalize the argument, in accordance with how Buffer does it + bytes = Math.trunc(bytes) + // do nothing if not a positive number + if (Number.isNaN(bytes) || bytes <= 0) return this + + while (this._bufs.length) { + if (bytes >= this._bufs[0].length) { + bytes -= this._bufs[0].length + this.length -= this._bufs[0].length + this._bufs.shift() + } else { + this._bufs[0] = this._bufs[0].slice(bytes) + this.length -= bytes break } } + return this +} - if (x < y) return -1 - if (y < x) return 1 - return 0 + +BufferList.prototype.duplicate = function duplicate () { + var i = 0 + , copy = new BufferList() + + for (; i < this._bufs.length; i++) + copy.append(this._bufs[i]) + + return copy } -// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`, -// OR the last index of `val` in `buffer` at offset <= `byteOffset`. -// -// Arguments: -// - buffer - a Buffer to search -// - val - a string, Buffer, or number -// - byteOffset - an index into `buffer`; will be clamped to an int32 -// - encoding - an optional encoding, relevant is val is a string -// - dir - true for indexOf, false for lastIndexOf -function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) { - // Empty buffer means no match - if (buffer.length === 0) return -1 - // Normalize byteOffset - if (typeof byteOffset === 'string') { - encoding = byteOffset - byteOffset = 0 - } else if (byteOffset > 0x7fffffff) { - byteOffset = 0x7fffffff - } else if (byteOffset < -0x80000000) { - byteOffset = -0x80000000 +BufferList.prototype.destroy = function destroy () { + this._bufs.length = 0 + this.length = 0 + this.push(null) +} + + +BufferList.prototype.indexOf = function (search, offset, encoding) { + if (encoding === undefined && typeof offset === 'string') { + encoding = offset + offset = undefined + } + if (typeof search === 'function' || Array.isArray(search)) { + throw new TypeError('The "value" argument must be one of type string, Buffer, BufferList, or Uint8Array.') + } else if (typeof search === 'number') { + search = Buffer.from([search]) + } else if (typeof search === 'string') { + search = Buffer.from(search, encoding) + } else if (search instanceof BufferList) { + search = search.slice() + } else if (!Buffer.isBuffer(search)) { + search = Buffer.from(search) + } + + offset = Number(offset || 0) + if (isNaN(offset)) { + offset = 0 } - byteOffset = +byteOffset // Coerce to Number. - if (numberIsNaN(byteOffset)) { - // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer - byteOffset = dir ? 0 : (buffer.length - 1) + + if (offset < 0) { + offset = this.length + offset } - // Normalize byteOffset: negative offsets start from the end of the buffer - if (byteOffset < 0) byteOffset = buffer.length + byteOffset - if (byteOffset >= buffer.length) { - if (dir) return -1 - else byteOffset = buffer.length - 1 - } else if (byteOffset < 0) { - if (dir) byteOffset = 0 - else return -1 + if (offset < 0) { + offset = 0 } - // Normalize val - if (typeof val === 'string') { - val = Buffer.from(val, encoding) + if (search.length === 0) { + return offset > this.length ? this.length : offset } - // Finally, search either indexOf (if dir is true) or lastIndexOf - if (Buffer.isBuffer(val)) { - // Special case: looking for empty string/buffer always fails - if (val.length === 0) { - return -1 - } - return arrayIndexOf(buffer, val, byteOffset, encoding, dir) - } else if (typeof val === 'number') { - val = val & 0xFF // Search for a byte value [0-255] - if (typeof Uint8Array.prototype.indexOf === 'function') { - if (dir) { - return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset) + var blOffset = this._offset(offset) + var blIndex = blOffset[0] // index of which internal buffer we're working on + var buffOffset = blOffset[1] // offset of the internal buffer we're working on + + // scan over each buffer + for (blIndex; blIndex < this._bufs.length; blIndex++) { + var buff = this._bufs[blIndex] + while(buffOffset < buff.length) { + var availableWindow = buff.length - buffOffset + if (availableWindow >= search.length) { + var nativeSearchResult = buff.indexOf(search, buffOffset) + if (nativeSearchResult !== -1) { + return this._reverseOffset([blIndex, nativeSearchResult]) + } + buffOffset = buff.length - search.length + 1 // end of native search window } else { - return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset) + var revOffset = this._reverseOffset([blIndex, buffOffset]) + if (this._match(revOffset, search)) { + return revOffset + } + buffOffset++ } } - return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir) + buffOffset = 0 } - - throw new TypeError('val must be string, number or Buffer') + return -1 } -function arrayIndexOf (arr, val, byteOffset, encoding, dir) { - var indexSize = 1 - var arrLength = arr.length - var valLength = val.length - - if (encoding !== undefined) { - encoding = String(encoding).toLowerCase() - if (encoding === 'ucs2' || encoding === 'ucs-2' || - encoding === 'utf16le' || encoding === 'utf-16le') { - if (arr.length < 2 || val.length < 2) { - return -1 - } - indexSize = 2 - arrLength /= 2 - valLength /= 2 - byteOffset /= 2 - } +BufferList.prototype._match = function(offset, search) { + if (this.length - offset < search.length) { + return false } - - function read (buf, i) { - if (indexSize === 1) { - return buf[i] - } else { - return buf.readUInt16BE(i * indexSize) + for (var searchOffset = 0; searchOffset < search.length ; searchOffset++) { + if(this.get(offset + searchOffset) !== search[searchOffset]){ + return false } } + return true +} - var i - if (dir) { - var foundIndex = -1 - for (i = byteOffset; i < arrLength; i++) { - if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) { - if (foundIndex === -1) foundIndex = i - if (i - foundIndex + 1 === valLength) return foundIndex * indexSize - } else { - if (foundIndex !== -1) i -= i - foundIndex - foundIndex = -1 - } - } - } else { - if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength - for (i = byteOffset; i >= 0; i--) { - var found = true - for (var j = 0; j < valLength; j++) { - if (read(arr, i + j) !== read(val, j)) { - found = false - break + +;(function () { + var methods = { + 'readDoubleBE' : 8 + , 'readDoubleLE' : 8 + , 'readFloatBE' : 4 + , 'readFloatLE' : 4 + , 'readInt32BE' : 4 + , 'readInt32LE' : 4 + , 'readUInt32BE' : 4 + , 'readUInt32LE' : 4 + , 'readInt16BE' : 2 + , 'readInt16LE' : 2 + , 'readUInt16BE' : 2 + , 'readUInt16LE' : 2 + , 'readInt8' : 1 + , 'readUInt8' : 1 + , 'readIntBE' : null + , 'readIntLE' : null + , 'readUIntBE' : null + , 'readUIntLE' : null + } + + for (var m in methods) { + (function (m) { + if (methods[m] === null) { + BufferList.prototype[m] = function (offset, byteLength) { + return this.slice(offset, offset + byteLength)[m](0, byteLength) } } - if (found) return i - } + else { + BufferList.prototype[m] = function (offset) { + return this.slice(offset, offset + methods[m])[m](0) + } + } + }(m)) } +}()) - return -1 -} - -Buffer.prototype.includes = function includes (val, byteOffset, encoding) { - return this.indexOf(val, byteOffset, encoding) !== -1 -} -Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) { - return bidirectionalIndexOf(this, val, byteOffset, encoding, true) -} +module.exports = BufferList -Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) { - return bidirectionalIndexOf(this, val, byteOffset, encoding, false) -} +},{"readable-stream":34,"safe-buffer":35,"util":40}],13:[function(require,module,exports){ -function hexWrite (buf, string, offset, length) { - offset = Number(offset) || 0 - var remaining = buf.length - offset - if (!length) { - length = remaining - } else { - length = Number(length) - if (length > remaining) { - length = remaining - } - } +},{}],14:[function(require,module,exports){ +(function (Buffer){(function (){ +/*! + * The buffer module from node.js, for the browser. + * + * @author Feross Aboukhadijeh + * @license MIT + */ +/* eslint-disable no-proto */ - // must be an even number of digits - var strLen = string.length - if (strLen % 2 !== 0) throw new TypeError('Invalid hex string') +'use strict' - if (length > strLen / 2) { - length = strLen / 2 - } - for (var i = 0; i < length; ++i) { - var parsed = parseInt(string.substr(i * 2, 2), 16) - if (numberIsNaN(parsed)) return i - buf[offset + i] = parsed - } - return i -} +var base64 = require('base64-js') +var ieee754 = require('ieee754') -function utf8Write (buf, string, offset, length) { - return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length) -} +exports.Buffer = Buffer +exports.SlowBuffer = SlowBuffer +exports.INSPECT_MAX_BYTES = 50 -function asciiWrite (buf, string, offset, length) { - return blitBuffer(asciiToBytes(string), buf, offset, length) -} +var K_MAX_LENGTH = 0x7fffffff +exports.kMaxLength = K_MAX_LENGTH -function latin1Write (buf, string, offset, length) { - return asciiWrite(buf, string, offset, length) -} +/** + * If `Buffer.TYPED_ARRAY_SUPPORT`: + * === true Use Uint8Array implementation (fastest) + * === false Print warning and recommend using `buffer` v4.x which has an Object + * implementation (most compatible, even IE6) + * + * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+, + * Opera 11.6+, iOS 4.2+. + * + * We report that the browser does not support typed arrays if the are not subclassable + * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array` + * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support + * for __proto__ and has a buggy typed array implementation. + */ +Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport() -function base64Write (buf, string, offset, length) { - return blitBuffer(base64ToBytes(string), buf, offset, length) +if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' && + typeof console.error === 'function') { + console.error( + 'This browser lacks typed array (Uint8Array) support which is required by ' + + '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.' + ) } -function ucs2Write (buf, string, offset, length) { - return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length) +function typedArraySupport () { + // Can typed array instances can be augmented? + try { + var arr = new Uint8Array(1) + arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function () { return 42 } } + return arr.foo() === 42 + } catch (e) { + return false + } } -Buffer.prototype.write = function write (string, offset, length, encoding) { - // Buffer#write(string) - if (offset === undefined) { - encoding = 'utf8' - length = this.length - offset = 0 - // Buffer#write(string, encoding) - } else if (length === undefined && typeof offset === 'string') { - encoding = offset - length = this.length - offset = 0 - // Buffer#write(string, offset[, length][, encoding]) - } else if (isFinite(offset)) { - offset = offset >>> 0 - if (isFinite(length)) { - length = length >>> 0 - if (encoding === undefined) encoding = 'utf8' - } else { - encoding = length - length = undefined - } - } else { - throw new Error( - 'Buffer.write(string, encoding, offset[, length]) is no longer supported' - ) +Object.defineProperty(Buffer.prototype, 'parent', { + enumerable: true, + get: function () { + if (!Buffer.isBuffer(this)) return undefined + return this.buffer } +}) - var remaining = this.length - offset - if (length === undefined || length > remaining) length = remaining +Object.defineProperty(Buffer.prototype, 'offset', { + enumerable: true, + get: function () { + if (!Buffer.isBuffer(this)) return undefined + return this.byteOffset + } +}) - if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) { - throw new RangeError('Attempt to write outside buffer bounds') +function createBuffer (length) { + if (length > K_MAX_LENGTH) { + throw new RangeError('The value "' + length + '" is invalid for option "size"') } + // Return an augmented `Uint8Array` instance + var buf = new Uint8Array(length) + buf.__proto__ = Buffer.prototype + return buf +} - if (!encoding) encoding = 'utf8' +/** + * The Buffer constructor returns instances of `Uint8Array` that have their + * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of + * `Uint8Array`, so the returned instances will have all the node `Buffer` methods + * and the `Uint8Array` methods. Square bracket notation works as expected -- it + * returns a single octet. + * + * The `Uint8Array` prototype remains unmodified. + */ - var loweredCase = false - for (;;) { - switch (encoding) { - case 'hex': - return hexWrite(this, string, offset, length) +function Buffer (arg, encodingOrOffset, length) { + // Common case. + if (typeof arg === 'number') { + if (typeof encodingOrOffset === 'string') { + throw new TypeError( + 'The "string" argument must be of type string. Received type number' + ) + } + return allocUnsafe(arg) + } + return from(arg, encodingOrOffset, length) +} - case 'utf8': - case 'utf-8': - return utf8Write(this, string, offset, length) +// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97 +if (typeof Symbol !== 'undefined' && Symbol.species != null && + Buffer[Symbol.species] === Buffer) { + Object.defineProperty(Buffer, Symbol.species, { + value: null, + configurable: true, + enumerable: false, + writable: false + }) +} - case 'ascii': - return asciiWrite(this, string, offset, length) +Buffer.poolSize = 8192 // not used by this implementation - case 'latin1': - case 'binary': - return latin1Write(this, string, offset, length) +function from (value, encodingOrOffset, length) { + if (typeof value === 'string') { + return fromString(value, encodingOrOffset) + } - case 'base64': - // Warning: maxLength not taken into account in base64Write - return base64Write(this, string, offset, length) + if (ArrayBuffer.isView(value)) { + return fromArrayLike(value) + } - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return ucs2Write(this, string, offset, length) + if (value == null) { + throw TypeError( + 'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' + + 'or Array-like Object. Received type ' + (typeof value) + ) + } - default: - if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding) - encoding = ('' + encoding).toLowerCase() - loweredCase = true - } + if (isInstance(value, ArrayBuffer) || + (value && isInstance(value.buffer, ArrayBuffer))) { + return fromArrayBuffer(value, encodingOrOffset, length) } -} -Buffer.prototype.toJSON = function toJSON () { - return { - type: 'Buffer', - data: Array.prototype.slice.call(this._arr || this, 0) + if (typeof value === 'number') { + throw new TypeError( + 'The "value" argument must not be of type number. Received type number' + ) } -} -function base64Slice (buf, start, end) { - if (start === 0 && end === buf.length) { - return base64.fromByteArray(buf) - } else { - return base64.fromByteArray(buf.slice(start, end)) + var valueOf = value.valueOf && value.valueOf() + if (valueOf != null && valueOf !== value) { + return Buffer.from(valueOf, encodingOrOffset, length) } -} -function utf8Slice (buf, start, end) { - end = Math.min(buf.length, end) - var res = [] + var b = fromObject(value) + if (b) return b - var i = start - while (i < end) { - var firstByte = buf[i] - var codePoint = null - var bytesPerSequence = (firstByte > 0xEF) ? 4 - : (firstByte > 0xDF) ? 3 - : (firstByte > 0xBF) ? 2 - : 1 + if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null && + typeof value[Symbol.toPrimitive] === 'function') { + return Buffer.from( + value[Symbol.toPrimitive]('string'), encodingOrOffset, length + ) + } - if (i + bytesPerSequence <= end) { - var secondByte, thirdByte, fourthByte, tempCodePoint + throw new TypeError( + 'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' + + 'or Array-like Object. Received type ' + (typeof value) + ) +} - switch (bytesPerSequence) { - case 1: - if (firstByte < 0x80) { - codePoint = firstByte - } - break - case 2: - secondByte = buf[i + 1] - if ((secondByte & 0xC0) === 0x80) { - tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F) - if (tempCodePoint > 0x7F) { - codePoint = tempCodePoint - } - } - break - case 3: - secondByte = buf[i + 1] - thirdByte = buf[i + 2] - if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) { - tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F) - if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) { - codePoint = tempCodePoint - } - } - break - case 4: - secondByte = buf[i + 1] - thirdByte = buf[i + 2] - fourthByte = buf[i + 3] - if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) { - tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F) - if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) { - codePoint = tempCodePoint - } - } - } - } +/** + * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError + * if value is a number. + * Buffer.from(str[, encoding]) + * Buffer.from(array) + * Buffer.from(buffer) + * Buffer.from(arrayBuffer[, byteOffset[, length]]) + **/ +Buffer.from = function (value, encodingOrOffset, length) { + return from(value, encodingOrOffset, length) +} - if (codePoint === null) { - // we did not generate a valid codePoint so insert a - // replacement char (U+FFFD) and advance only 1 byte - codePoint = 0xFFFD - bytesPerSequence = 1 - } else if (codePoint > 0xFFFF) { - // encode to utf16 (surrogate pair dance) - codePoint -= 0x10000 - res.push(codePoint >>> 10 & 0x3FF | 0xD800) - codePoint = 0xDC00 | codePoint & 0x3FF - } +// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug: +// https://github.com/feross/buffer/pull/148 +Buffer.prototype.__proto__ = Uint8Array.prototype +Buffer.__proto__ = Uint8Array - res.push(codePoint) - i += bytesPerSequence +function assertSize (size) { + if (typeof size !== 'number') { + throw new TypeError('"size" argument must be of type number') + } else if (size < 0) { + throw new RangeError('The value "' + size + '" is invalid for option "size"') } - - return decodeCodePointsArray(res) } -// Based on http://stackoverflow.com/a/22747272/680742, the browser with -// the lowest limit is Chrome, with 0x10000 args. -// We go 1 magnitude less, for safety -var MAX_ARGUMENTS_LENGTH = 0x1000 - -function decodeCodePointsArray (codePoints) { - var len = codePoints.length - if (len <= MAX_ARGUMENTS_LENGTH) { - return String.fromCharCode.apply(String, codePoints) // avoid extra slice() +function alloc (size, fill, encoding) { + assertSize(size) + if (size <= 0) { + return createBuffer(size) } - - // Decode in chunks to avoid "call stack size exceeded". - var res = '' - var i = 0 - while (i < len) { - res += String.fromCharCode.apply( - String, - codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH) - ) + if (fill !== undefined) { + // Only pay attention to encoding if it's a string. This + // prevents accidentally sending in a number that would + // be interpretted as a start offset. + return typeof encoding === 'string' + ? createBuffer(size).fill(fill, encoding) + : createBuffer(size).fill(fill) } - return res + return createBuffer(size) } -function asciiSlice (buf, start, end) { - var ret = '' - end = Math.min(buf.length, end) +/** + * Creates a new filled Buffer instance. + * alloc(size[, fill[, encoding]]) + **/ +Buffer.alloc = function (size, fill, encoding) { + return alloc(size, fill, encoding) +} - for (var i = start; i < end; ++i) { - ret += String.fromCharCode(buf[i] & 0x7F) - } - return ret +function allocUnsafe (size) { + assertSize(size) + return createBuffer(size < 0 ? 0 : checked(size) | 0) } -function latin1Slice (buf, start, end) { - var ret = '' - end = Math.min(buf.length, end) +/** + * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance. + * */ +Buffer.allocUnsafe = function (size) { + return allocUnsafe(size) +} +/** + * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance. + */ +Buffer.allocUnsafeSlow = function (size) { + return allocUnsafe(size) +} - for (var i = start; i < end; ++i) { - ret += String.fromCharCode(buf[i]) +function fromString (string, encoding) { + if (typeof encoding !== 'string' || encoding === '') { + encoding = 'utf8' } - return ret -} -function hexSlice (buf, start, end) { - var len = buf.length + if (!Buffer.isEncoding(encoding)) { + throw new TypeError('Unknown encoding: ' + encoding) + } - if (!start || start < 0) start = 0 - if (!end || end < 0 || end > len) end = len + var length = byteLength(string, encoding) | 0 + var buf = createBuffer(length) - var out = '' - for (var i = start; i < end; ++i) { - out += toHex(buf[i]) + var actual = buf.write(string, encoding) + + if (actual !== length) { + // Writing a hex string, for example, that contains invalid characters will + // cause everything after the first invalid character to be ignored. (e.g. + // 'abxxcd' will be treated as 'ab') + buf = buf.slice(0, actual) } - return out + + return buf } -function utf16leSlice (buf, start, end) { - var bytes = buf.slice(start, end) - var res = '' - for (var i = 0; i < bytes.length; i += 2) { - res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256)) +function fromArrayLike (array) { + var length = array.length < 0 ? 0 : checked(array.length) | 0 + var buf = createBuffer(length) + for (var i = 0; i < length; i += 1) { + buf[i] = array[i] & 255 } - return res + return buf } -Buffer.prototype.slice = function slice (start, end) { - var len = this.length - start = ~~start - end = end === undefined ? len : ~~end - - if (start < 0) { - start += len - if (start < 0) start = 0 - } else if (start > len) { - start = len +function fromArrayBuffer (array, byteOffset, length) { + if (byteOffset < 0 || array.byteLength < byteOffset) { + throw new RangeError('"offset" is outside of buffer bounds') } - if (end < 0) { - end += len - if (end < 0) end = 0 - } else if (end > len) { - end = len + if (array.byteLength < byteOffset + (length || 0)) { + throw new RangeError('"length" is outside of buffer bounds') } - if (end < start) end = start + var buf + if (byteOffset === undefined && length === undefined) { + buf = new Uint8Array(array) + } else if (length === undefined) { + buf = new Uint8Array(array, byteOffset) + } else { + buf = new Uint8Array(array, byteOffset, length) + } - var newBuf = this.subarray(start, end) // Return an augmented `Uint8Array` instance - newBuf.__proto__ = Buffer.prototype - return newBuf + buf.__proto__ = Buffer.prototype + return buf } -/* - * Need to make sure that buffer isn't trying to write out of bounds. - */ -function checkOffset (offset, ext, length) { - if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint') - if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length') -} +function fromObject (obj) { + if (Buffer.isBuffer(obj)) { + var len = checked(obj.length) | 0 + var buf = createBuffer(len) -Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) { - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) checkOffset(offset, byteLength, this.length) + if (buf.length === 0) { + return buf + } - var val = this[offset] - var mul = 1 - var i = 0 - while (++i < byteLength && (mul *= 0x100)) { - val += this[offset + i] * mul + obj.copy(buf, 0, 0, len) + return buf } - return val -} - -Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) { - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) { - checkOffset(offset, byteLength, this.length) + if (obj.length !== undefined) { + if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) { + return createBuffer(0) + } + return fromArrayLike(obj) } - var val = this[offset + --byteLength] - var mul = 1 - while (byteLength > 0 && (mul *= 0x100)) { - val += this[offset + --byteLength] * mul + if (obj.type === 'Buffer' && Array.isArray(obj.data)) { + return fromArrayLike(obj.data) } +} - return val +function checked (length) { + // Note: cannot use `length < K_MAX_LENGTH` here because that fails when + // length is NaN (which is otherwise coerced to zero.) + if (length >= K_MAX_LENGTH) { + throw new RangeError('Attempt to allocate Buffer larger than maximum ' + + 'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes') + } + return length | 0 } -Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 1, this.length) - return this[offset] +function SlowBuffer (length) { + if (+length != length) { // eslint-disable-line eqeqeq + length = 0 + } + return Buffer.alloc(+length) } -Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 2, this.length) - return this[offset] | (this[offset + 1] << 8) +Buffer.isBuffer = function isBuffer (b) { + return b != null && b._isBuffer === true && + b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false } -Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 2, this.length) - return (this[offset] << 8) | this[offset + 1] -} +Buffer.compare = function compare (a, b) { + if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength) + if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength) + if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) { + throw new TypeError( + 'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array' + ) + } -Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) + if (a === b) return 0 - return ((this[offset]) | - (this[offset + 1] << 8) | - (this[offset + 2] << 16)) + - (this[offset + 3] * 0x1000000) -} + var x = a.length + var y = b.length -Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) + for (var i = 0, len = Math.min(x, y); i < len; ++i) { + if (a[i] !== b[i]) { + x = a[i] + y = b[i] + break + } + } - return (this[offset] * 0x1000000) + - ((this[offset + 1] << 16) | - (this[offset + 2] << 8) | - this[offset + 3]) + if (x < y) return -1 + if (y < x) return 1 + return 0 } -Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) { - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) checkOffset(offset, byteLength, this.length) - - var val = this[offset] - var mul = 1 - var i = 0 - while (++i < byteLength && (mul *= 0x100)) { - val += this[offset + i] * mul +Buffer.isEncoding = function isEncoding (encoding) { + switch (String(encoding).toLowerCase()) { + case 'hex': + case 'utf8': + case 'utf-8': + case 'ascii': + case 'latin1': + case 'binary': + case 'base64': + case 'ucs2': + case 'ucs-2': + case 'utf16le': + case 'utf-16le': + return true + default: + return false } - mul *= 0x80 - - if (val >= mul) val -= Math.pow(2, 8 * byteLength) - - return val } -Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) { - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) checkOffset(offset, byteLength, this.length) +Buffer.concat = function concat (list, length) { + if (!Array.isArray(list)) { + throw new TypeError('"list" argument must be an Array of Buffers') + } - var i = byteLength - var mul = 1 - var val = this[offset + --i] - while (i > 0 && (mul *= 0x100)) { - val += this[offset + --i] * mul + if (list.length === 0) { + return Buffer.alloc(0) } - mul *= 0x80 - if (val >= mul) val -= Math.pow(2, 8 * byteLength) + var i + if (length === undefined) { + length = 0 + for (i = 0; i < list.length; ++i) { + length += list[i].length + } + } - return val + var buffer = Buffer.allocUnsafe(length) + var pos = 0 + for (i = 0; i < list.length; ++i) { + var buf = list[i] + if (isInstance(buf, Uint8Array)) { + buf = Buffer.from(buf) + } + if (!Buffer.isBuffer(buf)) { + throw new TypeError('"list" argument must be an Array of Buffers') + } + buf.copy(buffer, pos) + pos += buf.length + } + return buffer } -Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 1, this.length) - if (!(this[offset] & 0x80)) return (this[offset]) - return ((0xff - this[offset] + 1) * -1) -} +function byteLength (string, encoding) { + if (Buffer.isBuffer(string)) { + return string.length + } + if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) { + return string.byteLength + } + if (typeof string !== 'string') { + throw new TypeError( + 'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' + + 'Received type ' + typeof string + ) + } -Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 2, this.length) - var val = this[offset] | (this[offset + 1] << 8) - return (val & 0x8000) ? val | 0xFFFF0000 : val -} + var len = string.length + var mustMatch = (arguments.length > 2 && arguments[2] === true) + if (!mustMatch && len === 0) return 0 -Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 2, this.length) - var val = this[offset + 1] | (this[offset] << 8) - return (val & 0x8000) ? val | 0xFFFF0000 : val + // Use a for loop to avoid recursion + var loweredCase = false + for (;;) { + switch (encoding) { + case 'ascii': + case 'latin1': + case 'binary': + return len + case 'utf8': + case 'utf-8': + return utf8ToBytes(string).length + case 'ucs2': + case 'ucs-2': + case 'utf16le': + case 'utf-16le': + return len * 2 + case 'hex': + return len >>> 1 + case 'base64': + return base64ToBytes(string).length + default: + if (loweredCase) { + return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8 + } + encoding = ('' + encoding).toLowerCase() + loweredCase = true + } + } } +Buffer.byteLength = byteLength -Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) +function slowToString (encoding, start, end) { + var loweredCase = false - return (this[offset]) | - (this[offset + 1] << 8) | - (this[offset + 2] << 16) | - (this[offset + 3] << 24) -} + // No need to verify that "this.length <= MAX_UINT32" since it's a read-only + // property of a typed array. -Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) + // This behaves neither like String nor Uint8Array in that we set start/end + // to their upper/lower bounds if the value passed is out of range. + // undefined is handled specially as per ECMA-262 6th Edition, + // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization. + if (start === undefined || start < 0) { + start = 0 + } + // Return early if start > this.length. Done here to prevent potential uint32 + // coercion fail below. + if (start > this.length) { + return '' + } - return (this[offset] << 24) | - (this[offset + 1] << 16) | - (this[offset + 2] << 8) | - (this[offset + 3]) -} + if (end === undefined || end > this.length) { + end = this.length + } -Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) - return ieee754.read(this, offset, true, 23, 4) -} + if (end <= 0) { + return '' + } -Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) - return ieee754.read(this, offset, false, 23, 4) -} + // Force coersion to uint32. This will also coerce falsey/NaN values to 0. + end >>>= 0 + start >>>= 0 -Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 8, this.length) - return ieee754.read(this, offset, true, 52, 8) -} + if (end <= start) { + return '' + } -Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 8, this.length) - return ieee754.read(this, offset, false, 52, 8) -} + if (!encoding) encoding = 'utf8' -function checkInt (buf, value, offset, ext, max, min) { - if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance') - if (value > max || value < min) throw new RangeError('"value" argument is out of bounds') - if (offset + ext > buf.length) throw new RangeError('Index out of range') -} + while (true) { + switch (encoding) { + case 'hex': + return hexSlice(this, start, end) -Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) { - value = +value - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) { - var maxBytes = Math.pow(2, 8 * byteLength) - 1 - checkInt(this, value, offset, byteLength, maxBytes, 0) - } + case 'utf8': + case 'utf-8': + return utf8Slice(this, start, end) - var mul = 1 - var i = 0 - this[offset] = value & 0xFF - while (++i < byteLength && (mul *= 0x100)) { - this[offset + i] = (value / mul) & 0xFF + case 'ascii': + return asciiSlice(this, start, end) + + case 'latin1': + case 'binary': + return latin1Slice(this, start, end) + + case 'base64': + return base64Slice(this, start, end) + + case 'ucs2': + case 'ucs-2': + case 'utf16le': + case 'utf-16le': + return utf16leSlice(this, start, end) + + default: + if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding) + encoding = (encoding + '').toLowerCase() + loweredCase = true + } } +} - return offset + byteLength +// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package) +// to detect a Buffer instance. It's not possible to use `instanceof Buffer` +// reliably in a browserify context because there could be multiple different +// copies of the 'buffer' package in use. This method works even for Buffer +// instances that were created from another copy of the `buffer` package. +// See: https://github.com/feross/buffer/issues/154 +Buffer.prototype._isBuffer = true + +function swap (b, n, m) { + var i = b[n] + b[n] = b[m] + b[m] = i } -Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) { - value = +value - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) { - var maxBytes = Math.pow(2, 8 * byteLength) - 1 - checkInt(this, value, offset, byteLength, maxBytes, 0) +Buffer.prototype.swap16 = function swap16 () { + var len = this.length + if (len % 2 !== 0) { + throw new RangeError('Buffer size must be a multiple of 16-bits') } - - var i = byteLength - 1 - var mul = 1 - this[offset + i] = value & 0xFF - while (--i >= 0 && (mul *= 0x100)) { - this[offset + i] = (value / mul) & 0xFF + for (var i = 0; i < len; i += 2) { + swap(this, i, i + 1) } - - return offset + byteLength + return this } -Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0) - this[offset] = (value & 0xff) - return offset + 1 +Buffer.prototype.swap32 = function swap32 () { + var len = this.length + if (len % 4 !== 0) { + throw new RangeError('Buffer size must be a multiple of 32-bits') + } + for (var i = 0; i < len; i += 4) { + swap(this, i, i + 3) + swap(this, i + 1, i + 2) + } + return this } -Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) - this[offset] = (value & 0xff) - this[offset + 1] = (value >>> 8) - return offset + 2 +Buffer.prototype.swap64 = function swap64 () { + var len = this.length + if (len % 8 !== 0) { + throw new RangeError('Buffer size must be a multiple of 64-bits') + } + for (var i = 0; i < len; i += 8) { + swap(this, i, i + 7) + swap(this, i + 1, i + 6) + swap(this, i + 2, i + 5) + swap(this, i + 3, i + 4) + } + return this } -Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) - this[offset] = (value >>> 8) - this[offset + 1] = (value & 0xff) - return offset + 2 +Buffer.prototype.toString = function toString () { + var length = this.length + if (length === 0) return '' + if (arguments.length === 0) return utf8Slice(this, 0, length) + return slowToString.apply(this, arguments) } -Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) - this[offset + 3] = (value >>> 24) - this[offset + 2] = (value >>> 16) - this[offset + 1] = (value >>> 8) - this[offset] = (value & 0xff) - return offset + 4 +Buffer.prototype.toLocaleString = Buffer.prototype.toString + +Buffer.prototype.equals = function equals (b) { + if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer') + if (this === b) return true + return Buffer.compare(this, b) === 0 } -Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) - this[offset] = (value >>> 24) - this[offset + 1] = (value >>> 16) - this[offset + 2] = (value >>> 8) - this[offset + 3] = (value & 0xff) - return offset + 4 +Buffer.prototype.inspect = function inspect () { + var str = '' + var max = exports.INSPECT_MAX_BYTES + str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim() + if (this.length > max) str += ' ... ' + return '' } -Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) { - var limit = Math.pow(2, (8 * byteLength) - 1) +Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) { + if (isInstance(target, Uint8Array)) { + target = Buffer.from(target, target.offset, target.byteLength) + } + if (!Buffer.isBuffer(target)) { + throw new TypeError( + 'The "target" argument must be one of type Buffer or Uint8Array. ' + + 'Received type ' + (typeof target) + ) + } - checkInt(this, value, offset, byteLength, limit - 1, -limit) + if (start === undefined) { + start = 0 + } + if (end === undefined) { + end = target ? target.length : 0 + } + if (thisStart === undefined) { + thisStart = 0 + } + if (thisEnd === undefined) { + thisEnd = this.length } - var i = 0 - var mul = 1 - var sub = 0 - this[offset] = value & 0xFF - while (++i < byteLength && (mul *= 0x100)) { - if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) { - sub = 1 - } - this[offset + i] = ((value / mul) >> 0) - sub & 0xFF + if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) { + throw new RangeError('out of range index') } - return offset + byteLength -} + if (thisStart >= thisEnd && start >= end) { + return 0 + } + if (thisStart >= thisEnd) { + return -1 + } + if (start >= end) { + return 1 + } -Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) { - var limit = Math.pow(2, (8 * byteLength) - 1) + start >>>= 0 + end >>>= 0 + thisStart >>>= 0 + thisEnd >>>= 0 - checkInt(this, value, offset, byteLength, limit - 1, -limit) - } + if (this === target) return 0 - var i = byteLength - 1 - var mul = 1 - var sub = 0 - this[offset + i] = value & 0xFF - while (--i >= 0 && (mul *= 0x100)) { - if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) { - sub = 1 + var x = thisEnd - thisStart + var y = end - start + var len = Math.min(x, y) + + var thisCopy = this.slice(thisStart, thisEnd) + var targetCopy = target.slice(start, end) + + for (var i = 0; i < len; ++i) { + if (thisCopy[i] !== targetCopy[i]) { + x = thisCopy[i] + y = targetCopy[i] + break } - this[offset + i] = ((value / mul) >> 0) - sub & 0xFF } - return offset + byteLength + if (x < y) return -1 + if (y < x) return 1 + return 0 } -Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80) - if (value < 0) value = 0xff + value + 1 - this[offset] = (value & 0xff) - return offset + 1 -} +// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`, +// OR the last index of `val` in `buffer` at offset <= `byteOffset`. +// +// Arguments: +// - buffer - a Buffer to search +// - val - a string, Buffer, or number +// - byteOffset - an index into `buffer`; will be clamped to an int32 +// - encoding - an optional encoding, relevant is val is a string +// - dir - true for indexOf, false for lastIndexOf +function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) { + // Empty buffer means no match + if (buffer.length === 0) return -1 -Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000) - this[offset] = (value & 0xff) - this[offset + 1] = (value >>> 8) - return offset + 2 -} + // Normalize byteOffset + if (typeof byteOffset === 'string') { + encoding = byteOffset + byteOffset = 0 + } else if (byteOffset > 0x7fffffff) { + byteOffset = 0x7fffffff + } else if (byteOffset < -0x80000000) { + byteOffset = -0x80000000 + } + byteOffset = +byteOffset // Coerce to Number. + if (numberIsNaN(byteOffset)) { + // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer + byteOffset = dir ? 0 : (buffer.length - 1) + } -Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000) - this[offset] = (value >>> 8) - this[offset + 1] = (value & 0xff) - return offset + 2 -} - -Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000) - this[offset] = (value & 0xff) - this[offset + 1] = (value >>> 8) - this[offset + 2] = (value >>> 16) - this[offset + 3] = (value >>> 24) - return offset + 4 -} - -Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000) - if (value < 0) value = 0xffffffff + value + 1 - this[offset] = (value >>> 24) - this[offset + 1] = (value >>> 16) - this[offset + 2] = (value >>> 8) - this[offset + 3] = (value & 0xff) - return offset + 4 -} - -function checkIEEE754 (buf, value, offset, ext, max, min) { - if (offset + ext > buf.length) throw new RangeError('Index out of range') - if (offset < 0) throw new RangeError('Index out of range') -} - -function writeFloat (buf, value, offset, littleEndian, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) { - checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38) + // Normalize byteOffset: negative offsets start from the end of the buffer + if (byteOffset < 0) byteOffset = buffer.length + byteOffset + if (byteOffset >= buffer.length) { + if (dir) return -1 + else byteOffset = buffer.length - 1 + } else if (byteOffset < 0) { + if (dir) byteOffset = 0 + else return -1 } - ieee754.write(buf, value, offset, littleEndian, 23, 4) - return offset + 4 -} - -Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) { - return writeFloat(this, value, offset, true, noAssert) -} - -Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) { - return writeFloat(this, value, offset, false, noAssert) -} -function writeDouble (buf, value, offset, littleEndian, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) { - checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308) + // Normalize val + if (typeof val === 'string') { + val = Buffer.from(val, encoding) } - ieee754.write(buf, value, offset, littleEndian, 52, 8) - return offset + 8 -} -Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) { - return writeDouble(this, value, offset, true, noAssert) -} + // Finally, search either indexOf (if dir is true) or lastIndexOf + if (Buffer.isBuffer(val)) { + // Special case: looking for empty string/buffer always fails + if (val.length === 0) { + return -1 + } + return arrayIndexOf(buffer, val, byteOffset, encoding, dir) + } else if (typeof val === 'number') { + val = val & 0xFF // Search for a byte value [0-255] + if (typeof Uint8Array.prototype.indexOf === 'function') { + if (dir) { + return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset) + } else { + return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset) + } + } + return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir) + } -Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) { - return writeDouble(this, value, offset, false, noAssert) + throw new TypeError('val must be string, number or Buffer') } -// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length) -Buffer.prototype.copy = function copy (target, targetStart, start, end) { - if (!start) start = 0 - if (!end && end !== 0) end = this.length - if (targetStart >= target.length) targetStart = target.length - if (!targetStart) targetStart = 0 - if (end > 0 && end < start) end = start - - // Copy 0 bytes; we're done - if (end === start) return 0 - if (target.length === 0 || this.length === 0) return 0 +function arrayIndexOf (arr, val, byteOffset, encoding, dir) { + var indexSize = 1 + var arrLength = arr.length + var valLength = val.length - // Fatal error conditions - if (targetStart < 0) { - throw new RangeError('targetStart out of bounds') + if (encoding !== undefined) { + encoding = String(encoding).toLowerCase() + if (encoding === 'ucs2' || encoding === 'ucs-2' || + encoding === 'utf16le' || encoding === 'utf-16le') { + if (arr.length < 2 || val.length < 2) { + return -1 + } + indexSize = 2 + arrLength /= 2 + valLength /= 2 + byteOffset /= 2 + } } - if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds') - if (end < 0) throw new RangeError('sourceEnd out of bounds') - // Are we oob? - if (end > this.length) end = this.length - if (target.length - targetStart < end - start) { - end = target.length - targetStart + start + function read (buf, i) { + if (indexSize === 1) { + return buf[i] + } else { + return buf.readUInt16BE(i * indexSize) + } } - var len = end - start var i - - if (this === target && start < targetStart && targetStart < end) { - // descending copy from end - for (i = len - 1; i >= 0; --i) { - target[i + targetStart] = this[i + start] - } - } else if (len < 1000) { - // ascending copy from start - for (i = 0; i < len; ++i) { - target[i + targetStart] = this[i + start] + if (dir) { + var foundIndex = -1 + for (i = byteOffset; i < arrLength; i++) { + if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) { + if (foundIndex === -1) foundIndex = i + if (i - foundIndex + 1 === valLength) return foundIndex * indexSize + } else { + if (foundIndex !== -1) i -= i - foundIndex + foundIndex = -1 + } } } else { - Uint8Array.prototype.set.call( - target, - this.subarray(start, start + len), - targetStart - ) - } - - return len -} - -// Usage: -// buffer.fill(number[, offset[, end]]) -// buffer.fill(buffer[, offset[, end]]) -// buffer.fill(string[, offset[, end]][, encoding]) -Buffer.prototype.fill = function fill (val, start, end, encoding) { - // Handle string cases: - if (typeof val === 'string') { - if (typeof start === 'string') { - encoding = start - start = 0 - end = this.length - } else if (typeof end === 'string') { - encoding = end - end = this.length - } - if (val.length === 1) { - var code = val.charCodeAt(0) - if (code < 256) { - val = code + if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength + for (i = byteOffset; i >= 0; i--) { + var found = true + for (var j = 0; j < valLength; j++) { + if (read(arr, i + j) !== read(val, j)) { + found = false + break + } } + if (found) return i } - if (encoding !== undefined && typeof encoding !== 'string') { - throw new TypeError('encoding must be a string') - } - if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) { - throw new TypeError('Unknown encoding: ' + encoding) - } - } else if (typeof val === 'number') { - val = val & 255 } - // Invalid ranges are not set to a default, so can range check early. - if (start < 0 || this.length < start || this.length < end) { - throw new RangeError('Out of range index') - } + return -1 +} - if (end <= start) { - return this - } +Buffer.prototype.includes = function includes (val, byteOffset, encoding) { + return this.indexOf(val, byteOffset, encoding) !== -1 +} - start = start >>> 0 - end = end === undefined ? this.length : end >>> 0 +Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) { + return bidirectionalIndexOf(this, val, byteOffset, encoding, true) +} - if (!val) val = 0 +Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) { + return bidirectionalIndexOf(this, val, byteOffset, encoding, false) +} - var i - if (typeof val === 'number') { - for (i = start; i < end; ++i) { - this[i] = val - } +function hexWrite (buf, string, offset, length) { + offset = Number(offset) || 0 + var remaining = buf.length - offset + if (!length) { + length = remaining } else { - var bytes = Buffer.isBuffer(val) - ? val - : new Buffer(val, encoding) - var len = bytes.length - for (i = 0; i < end - start; ++i) { - this[i + start] = bytes[i % len] + length = Number(length) + if (length > remaining) { + length = remaining } } - return this -} + var strLen = string.length -// HELPER FUNCTIONS -// ================ + if (length > strLen / 2) { + length = strLen / 2 + } + for (var i = 0; i < length; ++i) { + var parsed = parseInt(string.substr(i * 2, 2), 16) + if (numberIsNaN(parsed)) return i + buf[offset + i] = parsed + } + return i +} -var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g +function utf8Write (buf, string, offset, length) { + return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length) +} -function base64clean (str) { - // Node strips out invalid characters like \n and \t from the string, base64-js does not - str = str.trim().replace(INVALID_BASE64_RE, '') - // Node converts strings with length < 2 to '' - if (str.length < 2) return '' - // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not - while (str.length % 4 !== 0) { - str = str + '=' - } - return str +function asciiWrite (buf, string, offset, length) { + return blitBuffer(asciiToBytes(string), buf, offset, length) } -function toHex (n) { - if (n < 16) return '0' + n.toString(16) - return n.toString(16) +function latin1Write (buf, string, offset, length) { + return asciiWrite(buf, string, offset, length) } -function utf8ToBytes (string, units) { - units = units || Infinity - var codePoint - var length = string.length - var leadSurrogate = null - var bytes = [] - - for (var i = 0; i < length; ++i) { - codePoint = string.charCodeAt(i) - - // is surrogate component - if (codePoint > 0xD7FF && codePoint < 0xE000) { - // last char was a lead - if (!leadSurrogate) { - // no lead yet - if (codePoint > 0xDBFF) { - // unexpected trail - if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) - continue - } else if (i + 1 === length) { - // unpaired lead - if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) - continue - } - - // valid lead - leadSurrogate = codePoint - - continue - } - - // 2 leads in a row - if (codePoint < 0xDC00) { - if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) - leadSurrogate = codePoint - continue - } - - // valid surrogate pair - codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000 - } else if (leadSurrogate) { - // valid bmp char, but last char was a lead - if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) - } +function base64Write (buf, string, offset, length) { + return blitBuffer(base64ToBytes(string), buf, offset, length) +} - leadSurrogate = null +function ucs2Write (buf, string, offset, length) { + return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length) +} - // encode utf8 - if (codePoint < 0x80) { - if ((units -= 1) < 0) break - bytes.push(codePoint) - } else if (codePoint < 0x800) { - if ((units -= 2) < 0) break - bytes.push( - codePoint >> 0x6 | 0xC0, - codePoint & 0x3F | 0x80 - ) - } else if (codePoint < 0x10000) { - if ((units -= 3) < 0) break - bytes.push( - codePoint >> 0xC | 0xE0, - codePoint >> 0x6 & 0x3F | 0x80, - codePoint & 0x3F | 0x80 - ) - } else if (codePoint < 0x110000) { - if ((units -= 4) < 0) break - bytes.push( - codePoint >> 0x12 | 0xF0, - codePoint >> 0xC & 0x3F | 0x80, - codePoint >> 0x6 & 0x3F | 0x80, - codePoint & 0x3F | 0x80 - ) +Buffer.prototype.write = function write (string, offset, length, encoding) { + // Buffer#write(string) + if (offset === undefined) { + encoding = 'utf8' + length = this.length + offset = 0 + // Buffer#write(string, encoding) + } else if (length === undefined && typeof offset === 'string') { + encoding = offset + length = this.length + offset = 0 + // Buffer#write(string, offset[, length][, encoding]) + } else if (isFinite(offset)) { + offset = offset >>> 0 + if (isFinite(length)) { + length = length >>> 0 + if (encoding === undefined) encoding = 'utf8' } else { - throw new Error('Invalid code point') + encoding = length + length = undefined } + } else { + throw new Error( + 'Buffer.write(string, encoding, offset[, length]) is no longer supported' + ) } - return bytes -} - -function asciiToBytes (str) { - var byteArray = [] - for (var i = 0; i < str.length; ++i) { - // Node's code seems to be doing this and not & 0x7F.. - byteArray.push(str.charCodeAt(i) & 0xFF) - } - return byteArray -} - -function utf16leToBytes (str, units) { - var c, hi, lo - var byteArray = [] - for (var i = 0; i < str.length; ++i) { - if ((units -= 2) < 0) break + var remaining = this.length - offset + if (length === undefined || length > remaining) length = remaining - c = str.charCodeAt(i) - hi = c >> 8 - lo = c % 256 - byteArray.push(lo) - byteArray.push(hi) + if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) { + throw new RangeError('Attempt to write outside buffer bounds') } - return byteArray -} - -function base64ToBytes (str) { - return base64.toByteArray(base64clean(str)) -} + if (!encoding) encoding = 'utf8' -function blitBuffer (src, dst, offset, length) { - for (var i = 0; i < length; ++i) { - if ((i + offset >= dst.length) || (i >= src.length)) break - dst[i + offset] = src[i] - } - return i -} + var loweredCase = false + for (;;) { + switch (encoding) { + case 'hex': + return hexWrite(this, string, offset, length) -// ArrayBuffers from another context (i.e. an iframe) do not pass the `instanceof` check -// but they should be treated as valid. See: https://github.com/feross/buffer/issues/166 -function isArrayBuffer (obj) { - return obj instanceof ArrayBuffer || - (obj != null && obj.constructor != null && obj.constructor.name === 'ArrayBuffer' && - typeof obj.byteLength === 'number') -} + case 'utf8': + case 'utf-8': + return utf8Write(this, string, offset, length) -// Node 0.10 supports `ArrayBuffer` but lacks `ArrayBuffer.isView` -function isArrayBufferView (obj) { - return (typeof ArrayBuffer.isView === 'function') && ArrayBuffer.isView(obj) -} + case 'ascii': + return asciiWrite(this, string, offset, length) -function numberIsNaN (obj) { - return obj !== obj // eslint-disable-line no-self-compare -} + case 'latin1': + case 'binary': + return latin1Write(this, string, offset, length) -},{"base64-js":6,"ieee754":12}],10:[function(require,module,exports){ -(function (Buffer){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. + case 'base64': + // Warning: maxLength not taken into account in base64Write + return base64Write(this, string, offset, length) -// NOTE: These type checking functions intentionally don't use `instanceof` -// because it is fragile and can be easily faked with `Object.create()`. + case 'ucs2': + case 'ucs-2': + case 'utf16le': + case 'utf-16le': + return ucs2Write(this, string, offset, length) -function isArray(arg) { - if (Array.isArray) { - return Array.isArray(arg); + default: + if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding) + encoding = ('' + encoding).toLowerCase() + loweredCase = true + } } - return objectToString(arg) === '[object Array]'; } -exports.isArray = isArray; -function isBoolean(arg) { - return typeof arg === 'boolean'; +Buffer.prototype.toJSON = function toJSON () { + return { + type: 'Buffer', + data: Array.prototype.slice.call(this._arr || this, 0) + } } -exports.isBoolean = isBoolean; -function isNull(arg) { - return arg === null; +function base64Slice (buf, start, end) { + if (start === 0 && end === buf.length) { + return base64.fromByteArray(buf) + } else { + return base64.fromByteArray(buf.slice(start, end)) + } } -exports.isNull = isNull; -function isNullOrUndefined(arg) { - return arg == null; -} -exports.isNullOrUndefined = isNullOrUndefined; +function utf8Slice (buf, start, end) { + end = Math.min(buf.length, end) + var res = [] -function isNumber(arg) { - return typeof arg === 'number'; -} -exports.isNumber = isNumber; + var i = start + while (i < end) { + var firstByte = buf[i] + var codePoint = null + var bytesPerSequence = (firstByte > 0xEF) ? 4 + : (firstByte > 0xDF) ? 3 + : (firstByte > 0xBF) ? 2 + : 1 -function isString(arg) { - return typeof arg === 'string'; -} -exports.isString = isString; + if (i + bytesPerSequence <= end) { + var secondByte, thirdByte, fourthByte, tempCodePoint -function isSymbol(arg) { - return typeof arg === 'symbol'; -} -exports.isSymbol = isSymbol; - -function isUndefined(arg) { - return arg === void 0; -} -exports.isUndefined = isUndefined; + switch (bytesPerSequence) { + case 1: + if (firstByte < 0x80) { + codePoint = firstByte + } + break + case 2: + secondByte = buf[i + 1] + if ((secondByte & 0xC0) === 0x80) { + tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F) + if (tempCodePoint > 0x7F) { + codePoint = tempCodePoint + } + } + break + case 3: + secondByte = buf[i + 1] + thirdByte = buf[i + 2] + if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) { + tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F) + if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) { + codePoint = tempCodePoint + } + } + break + case 4: + secondByte = buf[i + 1] + thirdByte = buf[i + 2] + fourthByte = buf[i + 3] + if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) { + tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F) + if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) { + codePoint = tempCodePoint + } + } + } + } -function isRegExp(re) { - return objectToString(re) === '[object RegExp]'; -} -exports.isRegExp = isRegExp; + if (codePoint === null) { + // we did not generate a valid codePoint so insert a + // replacement char (U+FFFD) and advance only 1 byte + codePoint = 0xFFFD + bytesPerSequence = 1 + } else if (codePoint > 0xFFFF) { + // encode to utf16 (surrogate pair dance) + codePoint -= 0x10000 + res.push(codePoint >>> 10 & 0x3FF | 0xD800) + codePoint = 0xDC00 | codePoint & 0x3FF + } -function isObject(arg) { - return typeof arg === 'object' && arg !== null; -} -exports.isObject = isObject; + res.push(codePoint) + i += bytesPerSequence + } -function isDate(d) { - return objectToString(d) === '[object Date]'; + return decodeCodePointsArray(res) } -exports.isDate = isDate; -function isError(e) { - return (objectToString(e) === '[object Error]' || e instanceof Error); -} -exports.isError = isError; +// Based on http://stackoverflow.com/a/22747272/680742, the browser with +// the lowest limit is Chrome, with 0x10000 args. +// We go 1 magnitude less, for safety +var MAX_ARGUMENTS_LENGTH = 0x1000 -function isFunction(arg) { - return typeof arg === 'function'; -} -exports.isFunction = isFunction; +function decodeCodePointsArray (codePoints) { + var len = codePoints.length + if (len <= MAX_ARGUMENTS_LENGTH) { + return String.fromCharCode.apply(String, codePoints) // avoid extra slice() + } -function isPrimitive(arg) { - return arg === null || - typeof arg === 'boolean' || - typeof arg === 'number' || - typeof arg === 'string' || - typeof arg === 'symbol' || // ES6 symbol - typeof arg === 'undefined'; + // Decode in chunks to avoid "call stack size exceeded". + var res = '' + var i = 0 + while (i < len) { + res += String.fromCharCode.apply( + String, + codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH) + ) + } + return res } -exports.isPrimitive = isPrimitive; -exports.isBuffer = Buffer.isBuffer; +function asciiSlice (buf, start, end) { + var ret = '' + end = Math.min(buf.length, end) -function objectToString(o) { - return Object.prototype.toString.call(o); + for (var i = start; i < end; ++i) { + ret += String.fromCharCode(buf[i] & 0x7F) + } + return ret } -}).call(this,{"isBuffer":require("../../is-buffer/index.js")}) -},{"../../is-buffer/index.js":14}],11:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. +function latin1Slice (buf, start, end) { + var ret = '' + end = Math.min(buf.length, end) -function EventEmitter() { - this._events = this._events || {}; - this._maxListeners = this._maxListeners || undefined; + for (var i = start; i < end; ++i) { + ret += String.fromCharCode(buf[i]) + } + return ret } -module.exports = EventEmitter; - -// Backwards-compat with node 0.10.x -EventEmitter.EventEmitter = EventEmitter; - -EventEmitter.prototype._events = undefined; -EventEmitter.prototype._maxListeners = undefined; - -// By default EventEmitters will print a warning if more than 10 listeners are -// added to it. This is a useful default which helps finding memory leaks. -EventEmitter.defaultMaxListeners = 10; -// Obviously not all Emitters should be limited to 10. This function allows -// that to be increased. Set to zero for unlimited. -EventEmitter.prototype.setMaxListeners = function(n) { - if (!isNumber(n) || n < 0 || isNaN(n)) - throw TypeError('n must be a positive number'); - this._maxListeners = n; - return this; -}; +function hexSlice (buf, start, end) { + var len = buf.length -EventEmitter.prototype.emit = function(type) { - var er, handler, len, args, i, listeners; + if (!start || start < 0) start = 0 + if (!end || end < 0 || end > len) end = len - if (!this._events) - this._events = {}; + var out = '' + for (var i = start; i < end; ++i) { + out += toHex(buf[i]) + } + return out +} - // If there is no 'error' event listener then throw. - if (type === 'error') { - if (!this._events.error || - (isObject(this._events.error) && !this._events.error.length)) { - er = arguments[1]; - if (er instanceof Error) { - throw er; // Unhandled 'error' event - } else { - // At least give some kind of context to the user - var err = new Error('Uncaught, unspecified "error" event. (' + er + ')'); - err.context = er; - throw err; - } - } +function utf16leSlice (buf, start, end) { + var bytes = buf.slice(start, end) + var res = '' + for (var i = 0; i < bytes.length; i += 2) { + res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256)) } + return res +} - handler = this._events[type]; +Buffer.prototype.slice = function slice (start, end) { + var len = this.length + start = ~~start + end = end === undefined ? len : ~~end - if (isUndefined(handler)) - return false; + if (start < 0) { + start += len + if (start < 0) start = 0 + } else if (start > len) { + start = len + } - if (isFunction(handler)) { - switch (arguments.length) { - // fast cases - case 1: - handler.call(this); - break; - case 2: - handler.call(this, arguments[1]); - break; - case 3: - handler.call(this, arguments[1], arguments[2]); - break; - // slower - default: - args = Array.prototype.slice.call(arguments, 1); - handler.apply(this, args); - } - } else if (isObject(handler)) { - args = Array.prototype.slice.call(arguments, 1); - listeners = handler.slice(); - len = listeners.length; - for (i = 0; i < len; i++) - listeners[i].apply(this, args); + if (end < 0) { + end += len + if (end < 0) end = 0 + } else if (end > len) { + end = len } - return true; -}; + if (end < start) end = start -EventEmitter.prototype.addListener = function(type, listener) { - var m; + var newBuf = this.subarray(start, end) + // Return an augmented `Uint8Array` instance + newBuf.__proto__ = Buffer.prototype + return newBuf +} - if (!isFunction(listener)) - throw TypeError('listener must be a function'); +/* + * Need to make sure that buffer isn't trying to write out of bounds. + */ +function checkOffset (offset, ext, length) { + if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint') + if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length') +} - if (!this._events) - this._events = {}; +Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) { + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) checkOffset(offset, byteLength, this.length) - // To avoid recursion in the case that type === "newListener"! Before - // adding it to the listeners, first emit "newListener". - if (this._events.newListener) - this.emit('newListener', type, - isFunction(listener.listener) ? - listener.listener : listener); + var val = this[offset] + var mul = 1 + var i = 0 + while (++i < byteLength && (mul *= 0x100)) { + val += this[offset + i] * mul + } - if (!this._events[type]) - // Optimize the case of one listener. Don't need the extra array object. - this._events[type] = listener; - else if (isObject(this._events[type])) - // If we've already got an array, just append. - this._events[type].push(listener); - else - // Adding the second element, need to change to array. - this._events[type] = [this._events[type], listener]; + return val +} - // Check for listener leak - if (isObject(this._events[type]) && !this._events[type].warned) { - if (!isUndefined(this._maxListeners)) { - m = this._maxListeners; - } else { - m = EventEmitter.defaultMaxListeners; - } - - if (m && m > 0 && this._events[type].length > m) { - this._events[type].warned = true; - console.error('(node) warning: possible EventEmitter memory ' + - 'leak detected. %d listeners added. ' + - 'Use emitter.setMaxListeners() to increase limit.', - this._events[type].length); - if (typeof console.trace === 'function') { - // not supported in IE 10 - console.trace(); - } - } +Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) { + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) { + checkOffset(offset, byteLength, this.length) } - return this; -}; + var val = this[offset + --byteLength] + var mul = 1 + while (byteLength > 0 && (mul *= 0x100)) { + val += this[offset + --byteLength] * mul + } -EventEmitter.prototype.on = EventEmitter.prototype.addListener; + return val +} -EventEmitter.prototype.once = function(type, listener) { - if (!isFunction(listener)) - throw TypeError('listener must be a function'); - - var fired = false; - - function g() { - this.removeListener(type, g); - - if (!fired) { - fired = true; - listener.apply(this, arguments); - } - } - - g.listener = listener; - this.on(type, g); +Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 1, this.length) + return this[offset] +} - return this; -}; +Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 2, this.length) + return this[offset] | (this[offset + 1] << 8) +} -// emits a 'removeListener' event iff the listener was removed -EventEmitter.prototype.removeListener = function(type, listener) { - var list, position, length, i; +Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 2, this.length) + return (this[offset] << 8) | this[offset + 1] +} - if (!isFunction(listener)) - throw TypeError('listener must be a function'); +Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) - if (!this._events || !this._events[type]) - return this; + return ((this[offset]) | + (this[offset + 1] << 8) | + (this[offset + 2] << 16)) + + (this[offset + 3] * 0x1000000) +} - list = this._events[type]; - length = list.length; - position = -1; - - if (list === listener || - (isFunction(list.listener) && list.listener === listener)) { - delete this._events[type]; - if (this._events.removeListener) - this.emit('removeListener', type, listener); - - } else if (isObject(list)) { - for (i = length; i-- > 0;) { - if (list[i] === listener || - (list[i].listener && list[i].listener === listener)) { - position = i; - break; - } - } +Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) - if (position < 0) - return this; + return (this[offset] * 0x1000000) + + ((this[offset + 1] << 16) | + (this[offset + 2] << 8) | + this[offset + 3]) +} - if (list.length === 1) { - list.length = 0; - delete this._events[type]; - } else { - list.splice(position, 1); - } +Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) { + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) checkOffset(offset, byteLength, this.length) - if (this._events.removeListener) - this.emit('removeListener', type, listener); + var val = this[offset] + var mul = 1 + var i = 0 + while (++i < byteLength && (mul *= 0x100)) { + val += this[offset + i] * mul } + mul *= 0x80 - return this; -}; + if (val >= mul) val -= Math.pow(2, 8 * byteLength) -EventEmitter.prototype.removeAllListeners = function(type) { - var key, listeners; + return val +} - if (!this._events) - return this; +Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) { + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) checkOffset(offset, byteLength, this.length) - // not listening for removeListener, no need to emit - if (!this._events.removeListener) { - if (arguments.length === 0) - this._events = {}; - else if (this._events[type]) - delete this._events[type]; - return this; + var i = byteLength + var mul = 1 + var val = this[offset + --i] + while (i > 0 && (mul *= 0x100)) { + val += this[offset + --i] * mul } + mul *= 0x80 - // emit removeListener for all listeners on all events - if (arguments.length === 0) { - for (key in this._events) { - if (key === 'removeListener') continue; - this.removeAllListeners(key); - } - this.removeAllListeners('removeListener'); - this._events = {}; - return this; - } + if (val >= mul) val -= Math.pow(2, 8 * byteLength) - listeners = this._events[type]; + return val +} - if (isFunction(listeners)) { - this.removeListener(type, listeners); - } else if (listeners) { - // LIFO order - while (listeners.length) - this.removeListener(type, listeners[listeners.length - 1]); - } - delete this._events[type]; +Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 1, this.length) + if (!(this[offset] & 0x80)) return (this[offset]) + return ((0xff - this[offset] + 1) * -1) +} - return this; -}; +Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 2, this.length) + var val = this[offset] | (this[offset + 1] << 8) + return (val & 0x8000) ? val | 0xFFFF0000 : val +} -EventEmitter.prototype.listeners = function(type) { - var ret; - if (!this._events || !this._events[type]) - ret = []; - else if (isFunction(this._events[type])) - ret = [this._events[type]]; - else - ret = this._events[type].slice(); - return ret; -}; +Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 2, this.length) + var val = this[offset + 1] | (this[offset] << 8) + return (val & 0x8000) ? val | 0xFFFF0000 : val +} -EventEmitter.prototype.listenerCount = function(type) { - if (this._events) { - var evlistener = this._events[type]; +Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) - if (isFunction(evlistener)) - return 1; - else if (evlistener) - return evlistener.length; - } - return 0; -}; + return (this[offset]) | + (this[offset + 1] << 8) | + (this[offset + 2] << 16) | + (this[offset + 3] << 24) +} -EventEmitter.listenerCount = function(emitter, type) { - return emitter.listenerCount(type); -}; +Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) -function isFunction(arg) { - return typeof arg === 'function'; + return (this[offset] << 24) | + (this[offset + 1] << 16) | + (this[offset + 2] << 8) | + (this[offset + 3]) } -function isNumber(arg) { - return typeof arg === 'number'; +Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) + return ieee754.read(this, offset, true, 23, 4) } -function isObject(arg) { - return typeof arg === 'object' && arg !== null; +Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) + return ieee754.read(this, offset, false, 23, 4) } -function isUndefined(arg) { - return arg === void 0; +Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 8, this.length) + return ieee754.read(this, offset, true, 52, 8) } -},{}],12:[function(require,module,exports){ -exports.read = function (buffer, offset, isLE, mLen, nBytes) { - var e, m - var eLen = nBytes * 8 - mLen - 1 - var eMax = (1 << eLen) - 1 - var eBias = eMax >> 1 - var nBits = -7 - var i = isLE ? (nBytes - 1) : 0 - var d = isLE ? -1 : 1 - var s = buffer[offset + i] - - i += d - - e = s & ((1 << (-nBits)) - 1) - s >>= (-nBits) - nBits += eLen - for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {} - - m = e & ((1 << (-nBits)) - 1) - e >>= (-nBits) - nBits += mLen - for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {} +Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 8, this.length) + return ieee754.read(this, offset, false, 52, 8) +} - if (e === 0) { - e = 1 - eBias - } else if (e === eMax) { - return m ? NaN : ((s ? -1 : 1) * Infinity) - } else { - m = m + Math.pow(2, mLen) - e = e - eBias - } - return (s ? -1 : 1) * m * Math.pow(2, e - mLen) +function checkInt (buf, value, offset, ext, max, min) { + if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance') + if (value > max || value < min) throw new RangeError('"value" argument is out of bounds') + if (offset + ext > buf.length) throw new RangeError('Index out of range') } -exports.write = function (buffer, value, offset, isLE, mLen, nBytes) { - var e, m, c - var eLen = nBytes * 8 - mLen - 1 - var eMax = (1 << eLen) - 1 - var eBias = eMax >> 1 - var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0) - var i = isLE ? 0 : (nBytes - 1) - var d = isLE ? 1 : -1 - var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0 +Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) { + value = +value + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) { + var maxBytes = Math.pow(2, 8 * byteLength) - 1 + checkInt(this, value, offset, byteLength, maxBytes, 0) + } - value = Math.abs(value) + var mul = 1 + var i = 0 + this[offset] = value & 0xFF + while (++i < byteLength && (mul *= 0x100)) { + this[offset + i] = (value / mul) & 0xFF + } - if (isNaN(value) || value === Infinity) { - m = isNaN(value) ? 1 : 0 - e = eMax - } else { - e = Math.floor(Math.log(value) / Math.LN2) - if (value * (c = Math.pow(2, -e)) < 1) { - e-- - c *= 2 - } - if (e + eBias >= 1) { - value += rt / c - } else { - value += rt * Math.pow(2, 1 - eBias) - } - if (value * c >= 2) { - e++ - c /= 2 - } + return offset + byteLength +} - if (e + eBias >= eMax) { - m = 0 - e = eMax - } else if (e + eBias >= 1) { - m = (value * c - 1) * Math.pow(2, mLen) - e = e + eBias - } else { - m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen) - e = 0 - } +Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) { + value = +value + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) { + var maxBytes = Math.pow(2, 8 * byteLength) - 1 + checkInt(this, value, offset, byteLength, maxBytes, 0) } - for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {} - - e = (e << mLen) | m - eLen += mLen - for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {} + var i = byteLength - 1 + var mul = 1 + this[offset + i] = value & 0xFF + while (--i >= 0 && (mul *= 0x100)) { + this[offset + i] = (value / mul) & 0xFF + } - buffer[offset + i - d] |= s * 128 + return offset + byteLength } -},{}],13:[function(require,module,exports){ -if (typeof Object.create === 'function') { - // implementation from standard node.js 'util' module - module.exports = function inherits(ctor, superCtor) { - ctor.super_ = superCtor - ctor.prototype = Object.create(superCtor.prototype, { - constructor: { - value: ctor, - enumerable: false, - writable: true, - configurable: true - } - }); - }; -} else { - // old school shim for old browsers - module.exports = function inherits(ctor, superCtor) { - ctor.super_ = superCtor - var TempCtor = function () {} - TempCtor.prototype = superCtor.prototype - ctor.prototype = new TempCtor() - ctor.prototype.constructor = ctor - } +Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0) + this[offset] = (value & 0xff) + return offset + 1 } -},{}],14:[function(require,module,exports){ -/*! - * Determine if an object is a Buffer - * - * @author Feross Aboukhadijeh - * @license MIT - */ +Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) + this[offset] = (value & 0xff) + this[offset + 1] = (value >>> 8) + return offset + 2 +} -// The _isBuffer check is for Safari 5-7 support, because it's missing -// Object.prototype.constructor. Remove this eventually -module.exports = function (obj) { - return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer) +Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) + this[offset] = (value >>> 8) + this[offset + 1] = (value & 0xff) + return offset + 2 } -function isBuffer (obj) { - return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj) +Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) + this[offset + 3] = (value >>> 24) + this[offset + 2] = (value >>> 16) + this[offset + 1] = (value >>> 8) + this[offset] = (value & 0xff) + return offset + 4 } -// For Node v0.10 support. Remove this eventually. -function isSlowBuffer (obj) { - return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0)) +Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) + this[offset] = (value >>> 24) + this[offset + 1] = (value >>> 16) + this[offset + 2] = (value >>> 8) + this[offset + 3] = (value & 0xff) + return offset + 4 } -},{}],15:[function(require,module,exports){ -var toString = {}.toString; +Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) { + var limit = Math.pow(2, (8 * byteLength) - 1) -module.exports = Array.isArray || function (arr) { - return toString.call(arr) == '[object Array]'; -}; + checkInt(this, value, offset, byteLength, limit - 1, -limit) + } -},{}],16:[function(require,module,exports){ -(function (process){ -'use strict'; + var i = 0 + var mul = 1 + var sub = 0 + this[offset] = value & 0xFF + while (++i < byteLength && (mul *= 0x100)) { + if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) { + sub = 1 + } + this[offset + i] = ((value / mul) >> 0) - sub & 0xFF + } -if (!process.version || - process.version.indexOf('v0.') === 0 || - process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) { - module.exports = nextTick; -} else { - module.exports = process.nextTick; + return offset + byteLength } -function nextTick(fn, arg1, arg2, arg3) { - if (typeof fn !== 'function') { - throw new TypeError('"callback" argument must be a function'); +Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) { + var limit = Math.pow(2, (8 * byteLength) - 1) + + checkInt(this, value, offset, byteLength, limit - 1, -limit) } - var len = arguments.length; - var args, i; - switch (len) { - case 0: - case 1: - return process.nextTick(fn); - case 2: - return process.nextTick(function afterTickOne() { - fn.call(null, arg1); - }); - case 3: - return process.nextTick(function afterTickTwo() { - fn.call(null, arg1, arg2); - }); - case 4: - return process.nextTick(function afterTickThree() { - fn.call(null, arg1, arg2, arg3); - }); - default: - args = new Array(len - 1); - i = 0; - while (i < args.length) { - args[i++] = arguments[i]; + + var i = byteLength - 1 + var mul = 1 + var sub = 0 + this[offset + i] = value & 0xFF + while (--i >= 0 && (mul *= 0x100)) { + if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) { + sub = 1 } - return process.nextTick(function afterTick() { - fn.apply(null, args); - }); + this[offset + i] = ((value / mul) >> 0) - sub & 0xFF } -} -}).call(this,require('_process')) -},{"_process":17}],17:[function(require,module,exports){ -// shim for using process in browser -var process = module.exports = {}; + return offset + byteLength +} -// cached from whatever global is present so that test runners that stub it -// don't break things. But we need to wrap it in a try catch in case it is -// wrapped in strict mode code which doesn't define any globals. It's inside a -// function because try/catches deoptimize in certain engines. +Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80) + if (value < 0) value = 0xff + value + 1 + this[offset] = (value & 0xff) + return offset + 1 +} -var cachedSetTimeout; -var cachedClearTimeout; +Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000) + this[offset] = (value & 0xff) + this[offset + 1] = (value >>> 8) + return offset + 2 +} -function defaultSetTimout() { - throw new Error('setTimeout has not been defined'); +Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000) + this[offset] = (value >>> 8) + this[offset + 1] = (value & 0xff) + return offset + 2 } -function defaultClearTimeout () { - throw new Error('clearTimeout has not been defined'); + +Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000) + this[offset] = (value & 0xff) + this[offset + 1] = (value >>> 8) + this[offset + 2] = (value >>> 16) + this[offset + 3] = (value >>> 24) + return offset + 4 } -(function () { - try { - if (typeof setTimeout === 'function') { - cachedSetTimeout = setTimeout; - } else { - cachedSetTimeout = defaultSetTimout; - } - } catch (e) { - cachedSetTimeout = defaultSetTimout; - } - try { - if (typeof clearTimeout === 'function') { - cachedClearTimeout = clearTimeout; - } else { - cachedClearTimeout = defaultClearTimeout; - } - } catch (e) { - cachedClearTimeout = defaultClearTimeout; - } -} ()) -function runTimeout(fun) { - if (cachedSetTimeout === setTimeout) { - //normal enviroments in sane situations - return setTimeout(fun, 0); - } - // if setTimeout wasn't available but was latter defined - if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) { - cachedSetTimeout = setTimeout; - return setTimeout(fun, 0); - } - try { - // when when somebody has screwed with setTimeout but no I.E. maddness - return cachedSetTimeout(fun, 0); - } catch(e){ - try { - // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally - return cachedSetTimeout.call(null, fun, 0); - } catch(e){ - // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error - return cachedSetTimeout.call(this, fun, 0); - } - } +Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000) + if (value < 0) value = 0xffffffff + value + 1 + this[offset] = (value >>> 24) + this[offset + 1] = (value >>> 16) + this[offset + 2] = (value >>> 8) + this[offset + 3] = (value & 0xff) + return offset + 4 +} +function checkIEEE754 (buf, value, offset, ext, max, min) { + if (offset + ext > buf.length) throw new RangeError('Index out of range') + if (offset < 0) throw new RangeError('Index out of range') } -function runClearTimeout(marker) { - if (cachedClearTimeout === clearTimeout) { - //normal enviroments in sane situations - return clearTimeout(marker); - } - // if clearTimeout wasn't available but was latter defined - if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) { - cachedClearTimeout = clearTimeout; - return clearTimeout(marker); - } - try { - // when when somebody has screwed with setTimeout but no I.E. maddness - return cachedClearTimeout(marker); - } catch (e){ - try { - // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally - return cachedClearTimeout.call(null, marker); - } catch (e){ - // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error. - // Some versions of I.E. have different rules for clearTimeout vs setTimeout - return cachedClearTimeout.call(this, marker); - } - } - - +function writeFloat (buf, value, offset, littleEndian, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) { + checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38) + } + ieee754.write(buf, value, offset, littleEndian, 23, 4) + return offset + 4 } -var queue = []; -var draining = false; -var currentQueue; -var queueIndex = -1; -function cleanUpNextTick() { - if (!draining || !currentQueue) { - return; - } - draining = false; - if (currentQueue.length) { - queue = currentQueue.concat(queue); - } else { - queueIndex = -1; - } - if (queue.length) { - drainQueue(); - } +Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) { + return writeFloat(this, value, offset, true, noAssert) } -function drainQueue() { - if (draining) { - return; - } - var timeout = runTimeout(cleanUpNextTick); - draining = true; +Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) { + return writeFloat(this, value, offset, false, noAssert) +} - var len = queue.length; - while(len) { - currentQueue = queue; - queue = []; - while (++queueIndex < len) { - if (currentQueue) { - currentQueue[queueIndex].run(); - } - } - queueIndex = -1; - len = queue.length; - } - currentQueue = null; - draining = false; - runClearTimeout(timeout); +function writeDouble (buf, value, offset, littleEndian, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) { + checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308) + } + ieee754.write(buf, value, offset, littleEndian, 52, 8) + return offset + 8 } -process.nextTick = function (fun) { - var args = new Array(arguments.length - 1); - if (arguments.length > 1) { - for (var i = 1; i < arguments.length; i++) { - args[i - 1] = arguments[i]; - } - } - queue.push(new Item(fun, args)); - if (queue.length === 1 && !draining) { - runTimeout(drainQueue); - } -}; +Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) { + return writeDouble(this, value, offset, true, noAssert) +} -// v8 likes predictible objects -function Item(fun, array) { - this.fun = fun; - this.array = array; +Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) { + return writeDouble(this, value, offset, false, noAssert) } -Item.prototype.run = function () { - this.fun.apply(null, this.array); -}; -process.title = 'browser'; -process.browser = true; -process.env = {}; -process.argv = []; -process.version = ''; // empty string to avoid regexp issues -process.versions = {}; -function noop() {} +// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length) +Buffer.prototype.copy = function copy (target, targetStart, start, end) { + if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer') + if (!start) start = 0 + if (!end && end !== 0) end = this.length + if (targetStart >= target.length) targetStart = target.length + if (!targetStart) targetStart = 0 + if (end > 0 && end < start) end = start -process.on = noop; -process.addListener = noop; -process.once = noop; -process.off = noop; -process.removeListener = noop; -process.removeAllListeners = noop; -process.emit = noop; -process.prependListener = noop; -process.prependOnceListener = noop; + // Copy 0 bytes; we're done + if (end === start) return 0 + if (target.length === 0 || this.length === 0) return 0 -process.listeners = function (name) { return [] } + // Fatal error conditions + if (targetStart < 0) { + throw new RangeError('targetStart out of bounds') + } + if (start < 0 || start >= this.length) throw new RangeError('Index out of range') + if (end < 0) throw new RangeError('sourceEnd out of bounds') -process.binding = function (name) { - throw new Error('process.binding is not supported'); -}; + // Are we oob? + if (end > this.length) end = this.length + if (target.length - targetStart < end - start) { + end = target.length - targetStart + start + } -process.cwd = function () { return '/' }; -process.chdir = function (dir) { - throw new Error('process.chdir is not supported'); -}; -process.umask = function() { return 0; }; + var len = end - start -},{}],18:[function(require,module,exports){ -module.exports = require('./lib/_stream_duplex.js'); + if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') { + // Use built-in when available, missing from IE11 + this.copyWithin(targetStart, start, end) + } else if (this === target && start < targetStart && targetStart < end) { + // descending copy from end + for (var i = len - 1; i >= 0; --i) { + target[i + targetStart] = this[i + start] + } + } else { + Uint8Array.prototype.set.call( + target, + this.subarray(start, end), + targetStart + ) + } -},{"./lib/_stream_duplex.js":19}],19:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. + return len +} -// a duplex stream is just a stream that is both readable and writable. -// Since JS doesn't have multiple prototypal inheritance, this class -// prototypally inherits from Readable, and then parasitically from -// Writable. +// Usage: +// buffer.fill(number[, offset[, end]]) +// buffer.fill(buffer[, offset[, end]]) +// buffer.fill(string[, offset[, end]][, encoding]) +Buffer.prototype.fill = function fill (val, start, end, encoding) { + // Handle string cases: + if (typeof val === 'string') { + if (typeof start === 'string') { + encoding = start + start = 0 + end = this.length + } else if (typeof end === 'string') { + encoding = end + end = this.length + } + if (encoding !== undefined && typeof encoding !== 'string') { + throw new TypeError('encoding must be a string') + } + if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) { + throw new TypeError('Unknown encoding: ' + encoding) + } + if (val.length === 1) { + var code = val.charCodeAt(0) + if ((encoding === 'utf8' && code < 128) || + encoding === 'latin1') { + // Fast path: If `val` fits into a single byte, use that numeric value. + val = code + } + } + } else if (typeof val === 'number') { + val = val & 255 + } -'use strict'; + // Invalid ranges are not set to a default, so can range check early. + if (start < 0 || this.length < start || this.length < end) { + throw new RangeError('Out of range index') + } -/**/ + if (end <= start) { + return this + } -var processNextTick = require('process-nextick-args'); -/**/ + start = start >>> 0 + end = end === undefined ? this.length : end >>> 0 -/**/ -var objectKeys = Object.keys || function (obj) { - var keys = []; - for (var key in obj) { - keys.push(key); - }return keys; -}; -/**/ + if (!val) val = 0 -module.exports = Duplex; + var i + if (typeof val === 'number') { + for (i = start; i < end; ++i) { + this[i] = val + } + } else { + var bytes = Buffer.isBuffer(val) + ? val + : Buffer.from(val, encoding) + var len = bytes.length + if (len === 0) { + throw new TypeError('The value "' + val + + '" is invalid for argument "value"') + } + for (i = 0; i < end - start; ++i) { + this[i + start] = bytes[i % len] + } + } -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ + return this +} -var Readable = require('./_stream_readable'); -var Writable = require('./_stream_writable'); +// HELPER FUNCTIONS +// ================ -util.inherits(Duplex, Readable); +var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g -var keys = objectKeys(Writable.prototype); -for (var v = 0; v < keys.length; v++) { - var method = keys[v]; - if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method]; +function base64clean (str) { + // Node takes equal signs as end of the Base64 encoding + str = str.split('=')[0] + // Node strips out invalid characters like \n and \t from the string, base64-js does not + str = str.trim().replace(INVALID_BASE64_RE, '') + // Node converts strings with length < 2 to '' + if (str.length < 2) return '' + // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not + while (str.length % 4 !== 0) { + str = str + '=' + } + return str } -function Duplex(options) { - if (!(this instanceof Duplex)) return new Duplex(options); +function toHex (n) { + if (n < 16) return '0' + n.toString(16) + return n.toString(16) +} - Readable.call(this, options); - Writable.call(this, options); +function utf8ToBytes (string, units) { + units = units || Infinity + var codePoint + var length = string.length + var leadSurrogate = null + var bytes = [] - if (options && options.readable === false) this.readable = false; + for (var i = 0; i < length; ++i) { + codePoint = string.charCodeAt(i) - if (options && options.writable === false) this.writable = false; + // is surrogate component + if (codePoint > 0xD7FF && codePoint < 0xE000) { + // last char was a lead + if (!leadSurrogate) { + // no lead yet + if (codePoint > 0xDBFF) { + // unexpected trail + if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) + continue + } else if (i + 1 === length) { + // unpaired lead + if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) + continue + } - this.allowHalfOpen = true; - if (options && options.allowHalfOpen === false) this.allowHalfOpen = false; + // valid lead + leadSurrogate = codePoint - this.once('end', onend); -} + continue + } -// the no-half-open enforcer -function onend() { - // if we allow half-open state, or if the writable side ended, - // then we're ok. - if (this.allowHalfOpen || this._writableState.ended) return; + // 2 leads in a row + if (codePoint < 0xDC00) { + if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) + leadSurrogate = codePoint + continue + } - // no more data can be written. - // But allow more writes to happen in this tick. - processNextTick(onEndNT, this); -} + // valid surrogate pair + codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000 + } else if (leadSurrogate) { + // valid bmp char, but last char was a lead + if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) + } -function onEndNT(self) { - self.end(); -} + leadSurrogate = null -Object.defineProperty(Duplex.prototype, 'destroyed', { - get: function () { - if (this._readableState === undefined || this._writableState === undefined) { - return false; - } - return this._readableState.destroyed && this._writableState.destroyed; - }, - set: function (value) { - // we ignore the value if the stream - // has not been initialized yet - if (this._readableState === undefined || this._writableState === undefined) { - return; + // encode utf8 + if (codePoint < 0x80) { + if ((units -= 1) < 0) break + bytes.push(codePoint) + } else if (codePoint < 0x800) { + if ((units -= 2) < 0) break + bytes.push( + codePoint >> 0x6 | 0xC0, + codePoint & 0x3F | 0x80 + ) + } else if (codePoint < 0x10000) { + if ((units -= 3) < 0) break + bytes.push( + codePoint >> 0xC | 0xE0, + codePoint >> 0x6 & 0x3F | 0x80, + codePoint & 0x3F | 0x80 + ) + } else if (codePoint < 0x110000) { + if ((units -= 4) < 0) break + bytes.push( + codePoint >> 0x12 | 0xF0, + codePoint >> 0xC & 0x3F | 0x80, + codePoint >> 0x6 & 0x3F | 0x80, + codePoint & 0x3F | 0x80 + ) + } else { + throw new Error('Invalid code point') } - - // backward compatibility, the user is explicitly - // managing destroyed - this._readableState.destroyed = value; - this._writableState.destroyed = value; } -}); - -Duplex.prototype._destroy = function (err, cb) { - this.push(null); - this.end(); - processNextTick(cb, err); -}; + return bytes +} -function forEach(xs, f) { - for (var i = 0, l = xs.length; i < l; i++) { - f(xs[i], i); +function asciiToBytes (str) { + var byteArray = [] + for (var i = 0; i < str.length; ++i) { + // Node's code seems to be doing this and not & 0x7F.. + byteArray.push(str.charCodeAt(i) & 0xFF) } + return byteArray } -},{"./_stream_readable":21,"./_stream_writable":23,"core-util-is":10,"inherits":13,"process-nextick-args":16}],20:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - -// a passthrough stream. -// basically just the most minimal sort of Transform stream. -// Every written chunk gets output as-is. - -'use strict'; -module.exports = PassThrough; +function utf16leToBytes (str, units) { + var c, hi, lo + var byteArray = [] + for (var i = 0; i < str.length; ++i) { + if ((units -= 2) < 0) break -var Transform = require('./_stream_transform'); + c = str.charCodeAt(i) + hi = c >> 8 + lo = c % 256 + byteArray.push(lo) + byteArray.push(hi) + } -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ + return byteArray +} -util.inherits(PassThrough, Transform); +function base64ToBytes (str) { + return base64.toByteArray(base64clean(str)) +} -function PassThrough(options) { - if (!(this instanceof PassThrough)) return new PassThrough(options); +function blitBuffer (src, dst, offset, length) { + for (var i = 0; i < length; ++i) { + if ((i + offset >= dst.length) || (i >= src.length)) break + dst[i + offset] = src[i] + } + return i +} - Transform.call(this, options); +// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass +// the `instanceof` check but they should be treated as of that type. +// See: https://github.com/feross/buffer/issues/166 +function isInstance (obj, type) { + return obj instanceof type || + (obj != null && obj.constructor != null && obj.constructor.name != null && + obj.constructor.name === type.name) +} +function numberIsNaN (obj) { + // For IE11 support + return obj !== obj // eslint-disable-line no-self-compare } -PassThrough.prototype._transform = function (chunk, encoding, cb) { - cb(null, chunk); -}; -},{"./_stream_transform":22,"core-util-is":10,"inherits":13}],21:[function(require,module,exports){ -(function (process,global){ +}).call(this)}).call(this,require("buffer").Buffer) +},{"base64-js":11,"buffer":14,"ieee754":17}],15:[function(require,module,exports){ +(function (Buffer){(function (){ // Copyright Joyent, Inc. and other Node contributors. // // Permission is hereby granted, free of charge, to any person obtaining a @@ -4526,3041 +4372,3949 @@ PassThrough.prototype._transform = function (chunk, encoding, cb) { // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE // USE OR OTHER DEALINGS IN THE SOFTWARE. -'use strict'; +// NOTE: These type checking functions intentionally don't use `instanceof` +// because it is fragile and can be easily faked with `Object.create()`. -/**/ +function isArray(arg) { + if (Array.isArray) { + return Array.isArray(arg); + } + return objectToString(arg) === '[object Array]'; +} +exports.isArray = isArray; -var processNextTick = require('process-nextick-args'); -/**/ +function isBoolean(arg) { + return typeof arg === 'boolean'; +} +exports.isBoolean = isBoolean; -module.exports = Readable; +function isNull(arg) { + return arg === null; +} +exports.isNull = isNull; -/**/ -var isArray = require('isarray'); -/**/ +function isNullOrUndefined(arg) { + return arg == null; +} +exports.isNullOrUndefined = isNullOrUndefined; -/**/ -var Duplex; -/**/ +function isNumber(arg) { + return typeof arg === 'number'; +} +exports.isNumber = isNumber; -Readable.ReadableState = ReadableState; +function isString(arg) { + return typeof arg === 'string'; +} +exports.isString = isString; -/**/ -var EE = require('events').EventEmitter; +function isSymbol(arg) { + return typeof arg === 'symbol'; +} +exports.isSymbol = isSymbol; -var EElistenerCount = function (emitter, type) { - return emitter.listeners(type).length; -}; -/**/ +function isUndefined(arg) { + return arg === void 0; +} +exports.isUndefined = isUndefined; -/**/ -var Stream = require('./internal/streams/stream'); -/**/ - -// TODO(bmeurer): Change this back to const once hole checks are -// properly optimized away early in Ignition+TurboFan. -/**/ -var Buffer = require('safe-buffer').Buffer; -var OurUint8Array = global.Uint8Array || function () {}; -function _uint8ArrayToBuffer(chunk) { - return Buffer.from(chunk); -} -function _isUint8Array(obj) { - return Buffer.isBuffer(obj) || obj instanceof OurUint8Array; +function isRegExp(re) { + return objectToString(re) === '[object RegExp]'; } -/**/ - -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ +exports.isRegExp = isRegExp; -/**/ -var debugUtil = require('util'); -var debug = void 0; -if (debugUtil && debugUtil.debuglog) { - debug = debugUtil.debuglog('stream'); -} else { - debug = function () {}; +function isObject(arg) { + return typeof arg === 'object' && arg !== null; } -/**/ +exports.isObject = isObject; -var BufferList = require('./internal/streams/BufferList'); -var destroyImpl = require('./internal/streams/destroy'); -var StringDecoder; +function isDate(d) { + return objectToString(d) === '[object Date]'; +} +exports.isDate = isDate; -util.inherits(Readable, Stream); +function isError(e) { + return (objectToString(e) === '[object Error]' || e instanceof Error); +} +exports.isError = isError; -var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume']; +function isFunction(arg) { + return typeof arg === 'function'; +} +exports.isFunction = isFunction; -function prependListener(emitter, event, fn) { - // Sadly this is not cacheable as some libraries bundle their own - // event emitter implementation with them. - if (typeof emitter.prependListener === 'function') { - return emitter.prependListener(event, fn); - } else { - // This is a hack to make sure that our error handler is attached before any - // userland ones. NEVER DO THIS. This is here only because this code needs - // to continue to work with older versions of Node.js that do not include - // the prependListener() method. The goal is to eventually remove this hack. - if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]]; - } +function isPrimitive(arg) { + return arg === null || + typeof arg === 'boolean' || + typeof arg === 'number' || + typeof arg === 'string' || + typeof arg === 'symbol' || // ES6 symbol + typeof arg === 'undefined'; } +exports.isPrimitive = isPrimitive; -function ReadableState(options, stream) { - Duplex = Duplex || require('./_stream_duplex'); +exports.isBuffer = Buffer.isBuffer; - options = options || {}; +function objectToString(o) { + return Object.prototype.toString.call(o); +} - // object stream flag. Used to make read(n) ignore n and to - // make all the buffer merging and length checks go away - this.objectMode = !!options.objectMode; +}).call(this)}).call(this,{"isBuffer":require("../../is-buffer/index.js")}) +},{"../../is-buffer/index.js":19}],16:[function(require,module,exports){ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. - if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.readableObjectMode; +var objectCreate = Object.create || objectCreatePolyfill +var objectKeys = Object.keys || objectKeysPolyfill +var bind = Function.prototype.bind || functionBindPolyfill - // the point at which it stops calling _read() to fill the buffer - // Note: 0 is a valid value, means "don't call _read preemptively ever" - var hwm = options.highWaterMark; - var defaultHwm = this.objectMode ? 16 : 16 * 1024; - this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm; +function EventEmitter() { + if (!this._events || !Object.prototype.hasOwnProperty.call(this, '_events')) { + this._events = objectCreate(null); + this._eventsCount = 0; + } - // cast to ints. - this.highWaterMark = Math.floor(this.highWaterMark); + this._maxListeners = this._maxListeners || undefined; +} +module.exports = EventEmitter; - // A linked list is used to store data chunks instead of an array because the - // linked list can remove elements from the beginning faster than - // array.shift() - this.buffer = new BufferList(); - this.length = 0; - this.pipes = null; - this.pipesCount = 0; - this.flowing = null; - this.ended = false; - this.endEmitted = false; - this.reading = false; +// Backwards-compat with node 0.10.x +EventEmitter.EventEmitter = EventEmitter; - // a flag to be able to tell if the event 'readable'/'data' is emitted - // immediately, or on a later tick. We set this to true at first, because - // any actions that shouldn't happen until "later" should generally also - // not happen before the first read call. - this.sync = true; +EventEmitter.prototype._events = undefined; +EventEmitter.prototype._maxListeners = undefined; - // whenever we return null, then we set a flag to say - // that we're awaiting a 'readable' event emission. - this.needReadable = false; - this.emittedReadable = false; - this.readableListening = false; - this.resumeScheduled = false; +// By default EventEmitters will print a warning if more than 10 listeners are +// added to it. This is a useful default which helps finding memory leaks. +var defaultMaxListeners = 10; + +var hasDefineProperty; +try { + var o = {}; + if (Object.defineProperty) Object.defineProperty(o, 'x', { value: 0 }); + hasDefineProperty = o.x === 0; +} catch (err) { hasDefineProperty = false } +if (hasDefineProperty) { + Object.defineProperty(EventEmitter, 'defaultMaxListeners', { + enumerable: true, + get: function() { + return defaultMaxListeners; + }, + set: function(arg) { + // check whether the input is a positive number (whose value is zero or + // greater and not a NaN). + if (typeof arg !== 'number' || arg < 0 || arg !== arg) + throw new TypeError('"defaultMaxListeners" must be a positive number'); + defaultMaxListeners = arg; + } + }); +} else { + EventEmitter.defaultMaxListeners = defaultMaxListeners; +} - // has it been destroyed - this.destroyed = false; +// Obviously not all Emitters should be limited to 10. This function allows +// that to be increased. Set to zero for unlimited. +EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) { + if (typeof n !== 'number' || n < 0 || isNaN(n)) + throw new TypeError('"n" argument must be a positive number'); + this._maxListeners = n; + return this; +}; - // Crypto is kind of old and crusty. Historically, its default string - // encoding is 'binary' so we have to make this configurable. - // Everything else in the universe uses 'utf8', though. - this.defaultEncoding = options.defaultEncoding || 'utf8'; +function $getMaxListeners(that) { + if (that._maxListeners === undefined) + return EventEmitter.defaultMaxListeners; + return that._maxListeners; +} - // the number of writers that are awaiting a drain event in .pipe()s - this.awaitDrain = 0; +EventEmitter.prototype.getMaxListeners = function getMaxListeners() { + return $getMaxListeners(this); +}; - // if true, a maybeReadMore has been scheduled - this.readingMore = false; +// These standalone emit* functions are used to optimize calling of event +// handlers for fast cases because emit() itself often has a variable number of +// arguments and can be deoptimized because of that. These functions always have +// the same number of arguments and thus do not get deoptimized, so the code +// inside them can execute faster. +function emitNone(handler, isFn, self) { + if (isFn) + handler.call(self); + else { + var len = handler.length; + var listeners = arrayClone(handler, len); + for (var i = 0; i < len; ++i) + listeners[i].call(self); + } +} +function emitOne(handler, isFn, self, arg1) { + if (isFn) + handler.call(self, arg1); + else { + var len = handler.length; + var listeners = arrayClone(handler, len); + for (var i = 0; i < len; ++i) + listeners[i].call(self, arg1); + } +} +function emitTwo(handler, isFn, self, arg1, arg2) { + if (isFn) + handler.call(self, arg1, arg2); + else { + var len = handler.length; + var listeners = arrayClone(handler, len); + for (var i = 0; i < len; ++i) + listeners[i].call(self, arg1, arg2); + } +} +function emitThree(handler, isFn, self, arg1, arg2, arg3) { + if (isFn) + handler.call(self, arg1, arg2, arg3); + else { + var len = handler.length; + var listeners = arrayClone(handler, len); + for (var i = 0; i < len; ++i) + listeners[i].call(self, arg1, arg2, arg3); + } +} + +function emitMany(handler, isFn, self, args) { + if (isFn) + handler.apply(self, args); + else { + var len = handler.length; + var listeners = arrayClone(handler, len); + for (var i = 0; i < len; ++i) + listeners[i].apply(self, args); + } +} + +EventEmitter.prototype.emit = function emit(type) { + var er, handler, len, args, i, events; + var doError = (type === 'error'); + + events = this._events; + if (events) + doError = (doError && events.error == null); + else if (!doError) + return false; - this.decoder = null; - this.encoding = null; - if (options.encoding) { - if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder; - this.decoder = new StringDecoder(options.encoding); - this.encoding = options.encoding; + // If there is no 'error' event listener then throw. + if (doError) { + if (arguments.length > 1) + er = arguments[1]; + if (er instanceof Error) { + throw er; // Unhandled 'error' event + } else { + // At least give some kind of context to the user + var err = new Error('Unhandled "error" event. (' + er + ')'); + err.context = er; + throw err; + } + return false; } -} -function Readable(options) { - Duplex = Duplex || require('./_stream_duplex'); + handler = events[type]; - if (!(this instanceof Readable)) return new Readable(options); + if (!handler) + return false; - this._readableState = new ReadableState(options, this); + var isFn = typeof handler === 'function'; + len = arguments.length; + switch (len) { + // fast cases + case 1: + emitNone(handler, isFn, this); + break; + case 2: + emitOne(handler, isFn, this, arguments[1]); + break; + case 3: + emitTwo(handler, isFn, this, arguments[1], arguments[2]); + break; + case 4: + emitThree(handler, isFn, this, arguments[1], arguments[2], arguments[3]); + break; + // slower + default: + args = new Array(len - 1); + for (i = 1; i < len; i++) + args[i - 1] = arguments[i]; + emitMany(handler, isFn, this, args); + } - // legacy - this.readable = true; + return true; +}; - if (options) { - if (typeof options.read === 'function') this._read = options.read; +function _addListener(target, type, listener, prepend) { + var m; + var events; + var existing; - if (typeof options.destroy === 'function') this._destroy = options.destroy; - } + if (typeof listener !== 'function') + throw new TypeError('"listener" argument must be a function'); - Stream.call(this); -} + events = target._events; + if (!events) { + events = target._events = objectCreate(null); + target._eventsCount = 0; + } else { + // To avoid recursion in the case that type === "newListener"! Before + // adding it to the listeners, first emit "newListener". + if (events.newListener) { + target.emit('newListener', type, + listener.listener ? listener.listener : listener); -Object.defineProperty(Readable.prototype, 'destroyed', { - get: function () { - if (this._readableState === undefined) { - return false; + // Re-assign `events` because a newListener handler could have caused the + // this._events to be assigned to a new object + events = target._events; } - return this._readableState.destroyed; - }, - set: function (value) { - // we ignore the value if the stream - // has not been initialized yet - if (!this._readableState) { - return; + existing = events[type]; + } + + if (!existing) { + // Optimize the case of one listener. Don't need the extra array object. + existing = events[type] = listener; + ++target._eventsCount; + } else { + if (typeof existing === 'function') { + // Adding the second element, need to change to array. + existing = events[type] = + prepend ? [listener, existing] : [existing, listener]; + } else { + // If we've already got an array, just append. + if (prepend) { + existing.unshift(listener); + } else { + existing.push(listener); + } } - // backward compatibility, the user is explicitly - // managing destroyed - this._readableState.destroyed = value; + // Check for listener leak + if (!existing.warned) { + m = $getMaxListeners(target); + if (m && m > 0 && existing.length > m) { + existing.warned = true; + var w = new Error('Possible EventEmitter memory leak detected. ' + + existing.length + ' "' + String(type) + '" listeners ' + + 'added. Use emitter.setMaxListeners() to ' + + 'increase limit.'); + w.name = 'MaxListenersExceededWarning'; + w.emitter = target; + w.type = type; + w.count = existing.length; + if (typeof console === 'object' && console.warn) { + console.warn('%s: %s', w.name, w.message); + } + } + } } -}); -Readable.prototype.destroy = destroyImpl.destroy; -Readable.prototype._undestroy = destroyImpl.undestroy; -Readable.prototype._destroy = function (err, cb) { - this.push(null); - cb(err); + return target; +} + +EventEmitter.prototype.addListener = function addListener(type, listener) { + return _addListener(this, type, listener, false); }; -// Manually shove something into the read() buffer. -// This returns true if the highWaterMark has not been hit yet, -// similar to how Writable.write() returns true if you should -// write() some more. -Readable.prototype.push = function (chunk, encoding) { - var state = this._readableState; - var skipChunkCheck; +EventEmitter.prototype.on = EventEmitter.prototype.addListener; - if (!state.objectMode) { - if (typeof chunk === 'string') { - encoding = encoding || state.defaultEncoding; - if (encoding !== state.encoding) { - chunk = Buffer.from(chunk, encoding); - encoding = ''; - } - skipChunkCheck = true; +EventEmitter.prototype.prependListener = + function prependListener(type, listener) { + return _addListener(this, type, listener, true); + }; + +function onceWrapper() { + if (!this.fired) { + this.target.removeListener(this.type, this.wrapFn); + this.fired = true; + switch (arguments.length) { + case 0: + return this.listener.call(this.target); + case 1: + return this.listener.call(this.target, arguments[0]); + case 2: + return this.listener.call(this.target, arguments[0], arguments[1]); + case 3: + return this.listener.call(this.target, arguments[0], arguments[1], + arguments[2]); + default: + var args = new Array(arguments.length); + for (var i = 0; i < args.length; ++i) + args[i] = arguments[i]; + this.listener.apply(this.target, args); } - } else { - skipChunkCheck = true; } +} - return readableAddChunk(this, chunk, encoding, false, skipChunkCheck); -}; +function _onceWrap(target, type, listener) { + var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener }; + var wrapped = bind.call(onceWrapper, state); + wrapped.listener = listener; + state.wrapFn = wrapped; + return wrapped; +} -// Unshift should *always* be something directly out of read() -Readable.prototype.unshift = function (chunk) { - return readableAddChunk(this, chunk, null, true, false); +EventEmitter.prototype.once = function once(type, listener) { + if (typeof listener !== 'function') + throw new TypeError('"listener" argument must be a function'); + this.on(type, _onceWrap(this, type, listener)); + return this; }; -function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) { - var state = stream._readableState; - if (chunk === null) { - state.reading = false; - onEofChunk(stream, state); - } else { - var er; - if (!skipChunkCheck) er = chunkInvalid(state, chunk); - if (er) { - stream.emit('error', er); - } else if (state.objectMode || chunk && chunk.length > 0) { - if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) { - chunk = _uint8ArrayToBuffer(chunk); - } +EventEmitter.prototype.prependOnceListener = + function prependOnceListener(type, listener) { + if (typeof listener !== 'function') + throw new TypeError('"listener" argument must be a function'); + this.prependListener(type, _onceWrap(this, type, listener)); + return this; + }; - if (addToFront) { - if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true); - } else if (state.ended) { - stream.emit('error', new Error('stream.push() after EOF')); - } else { - state.reading = false; - if (state.decoder && !encoding) { - chunk = state.decoder.write(chunk); - if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state); - } else { - addChunk(stream, state, chunk, false); +// Emits a 'removeListener' event if and only if the listener was removed. +EventEmitter.prototype.removeListener = + function removeListener(type, listener) { + var list, events, position, i, originalListener; + + if (typeof listener !== 'function') + throw new TypeError('"listener" argument must be a function'); + + events = this._events; + if (!events) + return this; + + list = events[type]; + if (!list) + return this; + + if (list === listener || list.listener === listener) { + if (--this._eventsCount === 0) + this._events = objectCreate(null); + else { + delete events[type]; + if (events.removeListener) + this.emit('removeListener', type, list.listener || listener); + } + } else if (typeof list !== 'function') { + position = -1; + + for (i = list.length - 1; i >= 0; i--) { + if (list[i] === listener || list[i].listener === listener) { + originalListener = list[i].listener; + position = i; + break; + } } - } - } else if (!addToFront) { - state.reading = false; - } - } - - return needMoreData(state); -} - -function addChunk(stream, state, chunk, addToFront) { - if (state.flowing && state.length === 0 && !state.sync) { - stream.emit('data', chunk); - stream.read(0); - } else { - // update the buffer info. - state.length += state.objectMode ? 1 : chunk.length; - if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk); - if (state.needReadable) emitReadable(stream); - } - maybeReadMore(stream, state); -} + if (position < 0) + return this; -function chunkInvalid(state, chunk) { - var er; - if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) { - er = new TypeError('Invalid non-string/buffer chunk'); - } - return er; -} + if (position === 0) + list.shift(); + else + spliceOne(list, position); -// if it's past the high water mark, we can push in some more. -// Also, if we have no data yet, we can stand some -// more bytes. This is to work around cases where hwm=0, -// such as the repl. Also, if the push() triggered a -// readable event, and the user called read(largeNumber) such that -// needReadable was set, then we ought to push more, so that another -// 'readable' event will be triggered. -function needMoreData(state) { - return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0); -} + if (list.length === 1) + events[type] = list[0]; -Readable.prototype.isPaused = function () { - return this._readableState.flowing === false; -}; + if (events.removeListener) + this.emit('removeListener', type, originalListener || listener); + } -// backwards compatibility. -Readable.prototype.setEncoding = function (enc) { - if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder; - this._readableState.decoder = new StringDecoder(enc); - this._readableState.encoding = enc; - return this; -}; + return this; + }; -// Don't raise the hwm > 8MB -var MAX_HWM = 0x800000; -function computeNewHighWaterMark(n) { - if (n >= MAX_HWM) { - n = MAX_HWM; - } else { - // Get the next highest power of 2 to prevent increasing hwm excessively in - // tiny amounts - n--; - n |= n >>> 1; - n |= n >>> 2; - n |= n >>> 4; - n |= n >>> 8; - n |= n >>> 16; - n++; - } - return n; -} +EventEmitter.prototype.removeAllListeners = + function removeAllListeners(type) { + var listeners, events, i; + + events = this._events; + if (!events) + return this; + + // not listening for removeListener, no need to emit + if (!events.removeListener) { + if (arguments.length === 0) { + this._events = objectCreate(null); + this._eventsCount = 0; + } else if (events[type]) { + if (--this._eventsCount === 0) + this._events = objectCreate(null); + else + delete events[type]; + } + return this; + } -// This function is designed to be inlinable, so please take care when making -// changes to the function body. -function howMuchToRead(n, state) { - if (n <= 0 || state.length === 0 && state.ended) return 0; - if (state.objectMode) return 1; - if (n !== n) { - // Only flow one buffer at a time - if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length; - } - // If we're asking for more than the current hwm, then raise the hwm. - if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n); - if (n <= state.length) return n; - // Don't have enough - if (!state.ended) { - state.needReadable = true; - return 0; - } - return state.length; -} + // emit removeListener for all listeners on all events + if (arguments.length === 0) { + var keys = objectKeys(events); + var key; + for (i = 0; i < keys.length; ++i) { + key = keys[i]; + if (key === 'removeListener') continue; + this.removeAllListeners(key); + } + this.removeAllListeners('removeListener'); + this._events = objectCreate(null); + this._eventsCount = 0; + return this; + } -// you can override either this method, or the async _read(n) below. -Readable.prototype.read = function (n) { - debug('read', n); - n = parseInt(n, 10); - var state = this._readableState; - var nOrig = n; + listeners = events[type]; - if (n !== 0) state.emittedReadable = false; + if (typeof listeners === 'function') { + this.removeListener(type, listeners); + } else if (listeners) { + // LIFO order + for (i = listeners.length - 1; i >= 0; i--) { + this.removeListener(type, listeners[i]); + } + } - // if we're doing read(0) to trigger a readable event, but we - // already have a bunch of data in the buffer, then just trigger - // the 'readable' event and move on. - if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) { - debug('read: emitReadable', state.length, state.ended); - if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this); - return null; - } + return this; + }; - n = howMuchToRead(n, state); +function _listeners(target, type, unwrap) { + var events = target._events; - // if we've ended, and we're now clear, then finish it up. - if (n === 0 && state.ended) { - if (state.length === 0) endReadable(this); - return null; - } + if (!events) + return []; - // All the actual chunk generation logic needs to be - // *below* the call to _read. The reason is that in certain - // synthetic stream cases, such as passthrough streams, _read - // may be a completely synchronous operation which may change - // the state of the read buffer, providing enough data when - // before there was *not* enough. - // - // So, the steps are: - // 1. Figure out what the state of things will be after we do - // a read from the buffer. - // - // 2. If that resulting state will trigger a _read, then call _read. - // Note that this may be asynchronous, or synchronous. Yes, it is - // deeply ugly to write APIs this way, but that still doesn't mean - // that the Readable class should behave improperly, as streams are - // designed to be sync/async agnostic. - // Take note if the _read call is sync or async (ie, if the read call - // has returned yet), so that we know whether or not it's safe to emit - // 'readable' etc. - // - // 3. Actually pull the requested chunks out of the buffer and return. + var evlistener = events[type]; + if (!evlistener) + return []; - // if we need a readable event, then we need to do some reading. - var doRead = state.needReadable; - debug('need readable', doRead); + if (typeof evlistener === 'function') + return unwrap ? [evlistener.listener || evlistener] : [evlistener]; - // if we currently have less than the highWaterMark, then also read some - if (state.length === 0 || state.length - n < state.highWaterMark) { - doRead = true; - debug('length less than watermark', doRead); - } + return unwrap ? unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length); +} - // however, if we've ended, then there's no point, and if we're already - // reading, then it's unnecessary. - if (state.ended || state.reading) { - doRead = false; - debug('reading or ended', doRead); - } else if (doRead) { - debug('do read'); - state.reading = true; - state.sync = true; - // if the length is currently zero, then we *need* a readable event. - if (state.length === 0) state.needReadable = true; - // call internal read method - this._read(state.highWaterMark); - state.sync = false; - // If _read pushed data synchronously, then `reading` will be false, - // and we need to re-evaluate how much data we can return to the user. - if (!state.reading) n = howMuchToRead(nOrig, state); - } +EventEmitter.prototype.listeners = function listeners(type) { + return _listeners(this, type, true); +}; - var ret; - if (n > 0) ret = fromList(n, state);else ret = null; +EventEmitter.prototype.rawListeners = function rawListeners(type) { + return _listeners(this, type, false); +}; - if (ret === null) { - state.needReadable = true; - n = 0; +EventEmitter.listenerCount = function(emitter, type) { + if (typeof emitter.listenerCount === 'function') { + return emitter.listenerCount(type); } else { - state.length -= n; + return listenerCount.call(emitter, type); } +}; - if (state.length === 0) { - // If we have nothing in the buffer, then we want to know - // as soon as we *do* get something into the buffer. - if (!state.ended) state.needReadable = true; +EventEmitter.prototype.listenerCount = listenerCount; +function listenerCount(type) { + var events = this._events; - // If we tried to read() past the EOF, then emit end on the next tick. - if (nOrig !== n && state.ended) endReadable(this); + if (events) { + var evlistener = events[type]; + + if (typeof evlistener === 'function') { + return 1; + } else if (evlistener) { + return evlistener.length; + } } - if (ret !== null) this.emit('data', ret); + return 0; +} - return ret; +EventEmitter.prototype.eventNames = function eventNames() { + return this._eventsCount > 0 ? Reflect.ownKeys(this._events) : []; }; -function onEofChunk(stream, state) { - if (state.ended) return; - if (state.decoder) { - var chunk = state.decoder.end(); - if (chunk && chunk.length) { - state.buffer.push(chunk); - state.length += state.objectMode ? 1 : chunk.length; - } - } - state.ended = true; +// About 1.5x faster than the two-arg version of Array#splice(). +function spliceOne(list, index) { + for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1) + list[i] = list[k]; + list.pop(); +} - // emit 'readable' now to make sure it gets picked up. - emitReadable(stream); +function arrayClone(arr, n) { + var copy = new Array(n); + for (var i = 0; i < n; ++i) + copy[i] = arr[i]; + return copy; } -// Don't emit readable right away in sync mode, because this can trigger -// another read() call => stack overflow. This way, it might trigger -// a nextTick recursion warning, but that's not so bad. -function emitReadable(stream) { - var state = stream._readableState; - state.needReadable = false; - if (!state.emittedReadable) { - debug('emitReadable', state.flowing); - state.emittedReadable = true; - if (state.sync) processNextTick(emitReadable_, stream);else emitReadable_(stream); +function unwrapListeners(arr) { + var ret = new Array(arr.length); + for (var i = 0; i < ret.length; ++i) { + ret[i] = arr[i].listener || arr[i]; } + return ret; } -function emitReadable_(stream) { - debug('emit readable'); - stream.emit('readable'); - flow(stream); +function objectCreatePolyfill(proto) { + var F = function() {}; + F.prototype = proto; + return new F; } - -// at this point, the user has presumably seen the 'readable' event, -// and called read() to consume some data. that may have triggered -// in turn another _read(n) call, in which case reading = true if -// it's in progress. -// However, if we're not ended, or reading, and the length < hwm, -// then go ahead and try to read some more preemptively. -function maybeReadMore(stream, state) { - if (!state.readingMore) { - state.readingMore = true; - processNextTick(maybeReadMore_, stream, state); +function objectKeysPolyfill(obj) { + var keys = []; + for (var k in obj) if (Object.prototype.hasOwnProperty.call(obj, k)) { + keys.push(k); } + return k; } - -function maybeReadMore_(stream, state) { - var len = state.length; - while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) { - debug('maybeReadMore read 0'); - stream.read(0); - if (len === state.length) - // didn't get any data, stop spinning. - break;else len = state.length; - } - state.readingMore = false; +function functionBindPolyfill(context) { + var fn = this; + return function () { + return fn.apply(context, arguments); + }; } -// abstract method. to be overridden in specific implementation classes. -// call cb(er, data) where data is <= n in length. -// for virtual (non-string, non-buffer) streams, "length" is somewhat -// arbitrary, and perhaps not very meaningful. -Readable.prototype._read = function (n) { - this.emit('error', new Error('_read() is not implemented')); -}; - -Readable.prototype.pipe = function (dest, pipeOpts) { - var src = this; - var state = this._readableState; - - switch (state.pipesCount) { - case 0: - state.pipes = dest; - break; - case 1: - state.pipes = [state.pipes, dest]; - break; - default: - state.pipes.push(dest); - break; - } - state.pipesCount += 1; - debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts); +},{}],17:[function(require,module,exports){ +/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh */ +exports.read = function (buffer, offset, isLE, mLen, nBytes) { + var e, m + var eLen = (nBytes * 8) - mLen - 1 + var eMax = (1 << eLen) - 1 + var eBias = eMax >> 1 + var nBits = -7 + var i = isLE ? (nBytes - 1) : 0 + var d = isLE ? -1 : 1 + var s = buffer[offset + i] - var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr; + i += d - var endFn = doEnd ? onend : unpipe; - if (state.endEmitted) processNextTick(endFn);else src.once('end', endFn); + e = s & ((1 << (-nBits)) - 1) + s >>= (-nBits) + nBits += eLen + for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {} - dest.on('unpipe', onunpipe); - function onunpipe(readable, unpipeInfo) { - debug('onunpipe'); - if (readable === src) { - if (unpipeInfo && unpipeInfo.hasUnpiped === false) { - unpipeInfo.hasUnpiped = true; - cleanup(); - } - } - } + m = e & ((1 << (-nBits)) - 1) + e >>= (-nBits) + nBits += mLen + for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {} - function onend() { - debug('onend'); - dest.end(); + if (e === 0) { + e = 1 - eBias + } else if (e === eMax) { + return m ? NaN : ((s ? -1 : 1) * Infinity) + } else { + m = m + Math.pow(2, mLen) + e = e - eBias } + return (s ? -1 : 1) * m * Math.pow(2, e - mLen) +} - // when the dest drains, it reduces the awaitDrain counter - // on the source. This would be more elegant with a .once() - // handler in flow(), but adding and removing repeatedly is - // too slow. - var ondrain = pipeOnDrain(src); - dest.on('drain', ondrain); - - var cleanedUp = false; - function cleanup() { - debug('cleanup'); - // cleanup event handlers once the pipe is broken - dest.removeListener('close', onclose); - dest.removeListener('finish', onfinish); - dest.removeListener('drain', ondrain); - dest.removeListener('error', onerror); - dest.removeListener('unpipe', onunpipe); - src.removeListener('end', onend); - src.removeListener('end', unpipe); - src.removeListener('data', ondata); +exports.write = function (buffer, value, offset, isLE, mLen, nBytes) { + var e, m, c + var eLen = (nBytes * 8) - mLen - 1 + var eMax = (1 << eLen) - 1 + var eBias = eMax >> 1 + var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0) + var i = isLE ? 0 : (nBytes - 1) + var d = isLE ? 1 : -1 + var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0 - cleanedUp = true; + value = Math.abs(value) - // if the reader is waiting for a drain event from this - // specific writer, then it would cause it to never start - // flowing again. - // So, if this is awaiting a drain, then we just call it now. - // If we don't know, then assume that we are waiting for one. - if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain(); - } + if (isNaN(value) || value === Infinity) { + m = isNaN(value) ? 1 : 0 + e = eMax + } else { + e = Math.floor(Math.log(value) / Math.LN2) + if (value * (c = Math.pow(2, -e)) < 1) { + e-- + c *= 2 + } + if (e + eBias >= 1) { + value += rt / c + } else { + value += rt * Math.pow(2, 1 - eBias) + } + if (value * c >= 2) { + e++ + c /= 2 + } - // If the user pushes more data while we're writing to dest then we'll end up - // in ondata again. However, we only want to increase awaitDrain once because - // dest will only emit one 'drain' event for the multiple writes. - // => Introduce a guard on increasing awaitDrain. - var increasedAwaitDrain = false; - src.on('data', ondata); - function ondata(chunk) { - debug('ondata'); - increasedAwaitDrain = false; - var ret = dest.write(chunk); - if (false === ret && !increasedAwaitDrain) { - // If the user unpiped during `dest.write()`, it is possible - // to get stuck in a permanently paused state if that write - // also returned false. - // => Check whether `dest` is still a piping destination. - if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) { - debug('false write response, pause', src._readableState.awaitDrain); - src._readableState.awaitDrain++; - increasedAwaitDrain = true; - } - src.pause(); + if (e + eBias >= eMax) { + m = 0 + e = eMax + } else if (e + eBias >= 1) { + m = ((value * c) - 1) * Math.pow(2, mLen) + e = e + eBias + } else { + m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen) + e = 0 } } - // if the dest has an error, then stop piping into it. - // however, don't suppress the throwing behavior for this. - function onerror(er) { - debug('onerror', er); - unpipe(); - dest.removeListener('error', onerror); - if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er); - } + for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {} - // Make sure our error handler is attached before userland ones. - prependListener(dest, 'error', onerror); + e = (e << mLen) | m + eLen += mLen + for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {} - // Both close and finish should trigger unpipe, but only once. - function onclose() { - dest.removeListener('finish', onfinish); - unpipe(); - } - dest.once('close', onclose); - function onfinish() { - debug('onfinish'); - dest.removeListener('close', onclose); - unpipe(); - } - dest.once('finish', onfinish); + buffer[offset + i - d] |= s * 128 +} - function unpipe() { - debug('unpipe'); - src.unpipe(dest); +},{}],18:[function(require,module,exports){ +if (typeof Object.create === 'function') { + // implementation from standard node.js 'util' module + module.exports = function inherits(ctor, superCtor) { + if (superCtor) { + ctor.super_ = superCtor + ctor.prototype = Object.create(superCtor.prototype, { + constructor: { + value: ctor, + enumerable: false, + writable: true, + configurable: true + } + }) + } + }; +} else { + // old school shim for old browsers + module.exports = function inherits(ctor, superCtor) { + if (superCtor) { + ctor.super_ = superCtor + var TempCtor = function () {} + TempCtor.prototype = superCtor.prototype + ctor.prototype = new TempCtor() + ctor.prototype.constructor = ctor + } } +} - // tell the dest that it's being piped to - dest.emit('pipe', src); +},{}],19:[function(require,module,exports){ +/*! + * Determine if an object is a Buffer + * + * @author Feross Aboukhadijeh + * @license MIT + */ - // start the flow if it hasn't been started already. - if (!state.flowing) { - debug('pipe resume'); - src.resume(); - } +// The _isBuffer check is for Safari 5-7 support, because it's missing +// Object.prototype.constructor. Remove this eventually +module.exports = function (obj) { + return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer) +} - return dest; -}; +function isBuffer (obj) { + return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj) +} -function pipeOnDrain(src) { - return function () { - var state = src._readableState; - debug('pipeOnDrain', state.awaitDrain); - if (state.awaitDrain) state.awaitDrain--; - if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) { - state.flowing = true; - flow(src); - } - }; +// For Node v0.10 support. Remove this eventually. +function isSlowBuffer (obj) { + return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0)) } -Readable.prototype.unpipe = function (dest) { - var state = this._readableState; - var unpipeInfo = { hasUnpiped: false }; +},{}],20:[function(require,module,exports){ +var toString = {}.toString; - // if we're not piping anywhere, then do nothing. - if (state.pipesCount === 0) return this; +module.exports = Array.isArray || function (arr) { + return toString.call(arr) == '[object Array]'; +}; - // just one destination. most common case. - if (state.pipesCount === 1) { - // passed in one, but it's not the right one. - if (dest && dest !== state.pipes) return this; +},{}],21:[function(require,module,exports){ +/* +object-assign +(c) Sindre Sorhus +@license MIT +*/ - if (!dest) dest = state.pipes; +'use strict'; +/* eslint-disable no-unused-vars */ +var getOwnPropertySymbols = Object.getOwnPropertySymbols; +var hasOwnProperty = Object.prototype.hasOwnProperty; +var propIsEnumerable = Object.prototype.propertyIsEnumerable; + +function toObject(val) { + if (val === null || val === undefined) { + throw new TypeError('Object.assign cannot be called with null or undefined'); + } + + return Object(val); +} + +function shouldUseNative() { + try { + if (!Object.assign) { + return false; + } + + // Detect buggy property enumeration order in older V8 versions. + + // https://bugs.chromium.org/p/v8/issues/detail?id=4118 + var test1 = new String('abc'); // eslint-disable-line no-new-wrappers + test1[5] = 'de'; + if (Object.getOwnPropertyNames(test1)[0] === '5') { + return false; + } + + // https://bugs.chromium.org/p/v8/issues/detail?id=3056 + var test2 = {}; + for (var i = 0; i < 10; i++) { + test2['_' + String.fromCharCode(i)] = i; + } + var order2 = Object.getOwnPropertyNames(test2).map(function (n) { + return test2[n]; + }); + if (order2.join('') !== '0123456789') { + return false; + } + + // https://bugs.chromium.org/p/v8/issues/detail?id=3056 + var test3 = {}; + 'abcdefghijklmnopqrst'.split('').forEach(function (letter) { + test3[letter] = letter; + }); + if (Object.keys(Object.assign({}, test3)).join('') !== + 'abcdefghijklmnopqrst') { + return false; + } + + return true; + } catch (err) { + // We don't expect any of the above to throw, but better to be safe. + return false; + } +} + +module.exports = shouldUseNative() ? Object.assign : function (target, source) { + var from; + var to = toObject(target); + var symbols; + + for (var s = 1; s < arguments.length; s++) { + from = Object(arguments[s]); + + for (var key in from) { + if (hasOwnProperty.call(from, key)) { + to[key] = from[key]; + } + } + + if (getOwnPropertySymbols) { + symbols = getOwnPropertySymbols(from); + for (var i = 0; i < symbols.length; i++) { + if (propIsEnumerable.call(from, symbols[i])) { + to[symbols[i]] = from[symbols[i]]; + } + } + } + } + + return to; +}; - // got a match. - state.pipes = null; - state.pipesCount = 0; - state.flowing = false; - if (dest) dest.emit('unpipe', this, unpipeInfo); - return this; +},{}],22:[function(require,module,exports){ +(function (process){(function (){ +'use strict'; + +if (typeof process === 'undefined' || + !process.version || + process.version.indexOf('v0.') === 0 || + process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) { + module.exports = { nextTick: nextTick }; +} else { + module.exports = process +} + +function nextTick(fn, arg1, arg2, arg3) { + if (typeof fn !== 'function') { + throw new TypeError('"callback" argument must be a function'); } + var len = arguments.length; + var args, i; + switch (len) { + case 0: + case 1: + return process.nextTick(fn); + case 2: + return process.nextTick(function afterTickOne() { + fn.call(null, arg1); + }); + case 3: + return process.nextTick(function afterTickTwo() { + fn.call(null, arg1, arg2); + }); + case 4: + return process.nextTick(function afterTickThree() { + fn.call(null, arg1, arg2, arg3); + }); + default: + args = new Array(len - 1); + i = 0; + while (i < args.length) { + args[i++] = arguments[i]; + } + return process.nextTick(function afterTick() { + fn.apply(null, args); + }); + } +} - // slow case. multiple pipe destinations. - if (!dest) { - // remove all. - var dests = state.pipes; - var len = state.pipesCount; - state.pipes = null; - state.pipesCount = 0; - state.flowing = false; +}).call(this)}).call(this,require('_process')) +},{"_process":23}],23:[function(require,module,exports){ +// shim for using process in browser +var process = module.exports = {}; - for (var i = 0; i < len; i++) { - dests[i].emit('unpipe', this, unpipeInfo); - }return this; - } +// cached from whatever global is present so that test runners that stub it +// don't break things. But we need to wrap it in a try catch in case it is +// wrapped in strict mode code which doesn't define any globals. It's inside a +// function because try/catches deoptimize in certain engines. - // try to find the right one. - var index = indexOf(state.pipes, dest); - if (index === -1) return this; +var cachedSetTimeout; +var cachedClearTimeout; - state.pipes.splice(index, 1); - state.pipesCount -= 1; - if (state.pipesCount === 1) state.pipes = state.pipes[0]; +function defaultSetTimout() { + throw new Error('setTimeout has not been defined'); +} +function defaultClearTimeout () { + throw new Error('clearTimeout has not been defined'); +} +(function () { + try { + if (typeof setTimeout === 'function') { + cachedSetTimeout = setTimeout; + } else { + cachedSetTimeout = defaultSetTimout; + } + } catch (e) { + cachedSetTimeout = defaultSetTimout; + } + try { + if (typeof clearTimeout === 'function') { + cachedClearTimeout = clearTimeout; + } else { + cachedClearTimeout = defaultClearTimeout; + } + } catch (e) { + cachedClearTimeout = defaultClearTimeout; + } +} ()) +function runTimeout(fun) { + if (cachedSetTimeout === setTimeout) { + //normal enviroments in sane situations + return setTimeout(fun, 0); + } + // if setTimeout wasn't available but was latter defined + if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) { + cachedSetTimeout = setTimeout; + return setTimeout(fun, 0); + } + try { + // when when somebody has screwed with setTimeout but no I.E. maddness + return cachedSetTimeout(fun, 0); + } catch(e){ + try { + // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally + return cachedSetTimeout.call(null, fun, 0); + } catch(e){ + // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error + return cachedSetTimeout.call(this, fun, 0); + } + } - dest.emit('unpipe', this, unpipeInfo); - return this; -}; +} +function runClearTimeout(marker) { + if (cachedClearTimeout === clearTimeout) { + //normal enviroments in sane situations + return clearTimeout(marker); + } + // if clearTimeout wasn't available but was latter defined + if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) { + cachedClearTimeout = clearTimeout; + return clearTimeout(marker); + } + try { + // when when somebody has screwed with setTimeout but no I.E. maddness + return cachedClearTimeout(marker); + } catch (e){ + try { + // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally + return cachedClearTimeout.call(null, marker); + } catch (e){ + // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error. + // Some versions of I.E. have different rules for clearTimeout vs setTimeout + return cachedClearTimeout.call(this, marker); + } + } -// set up data events if they are asked for -// Ensure readable listeners eventually get something -Readable.prototype.on = function (ev, fn) { - var res = Stream.prototype.on.call(this, ev, fn); - if (ev === 'data') { - // Start flowing on next tick if stream isn't explicitly paused - if (this._readableState.flowing !== false) this.resume(); - } else if (ev === 'readable') { - var state = this._readableState; - if (!state.endEmitted && !state.readableListening) { - state.readableListening = state.needReadable = true; - state.emittedReadable = false; - if (!state.reading) { - processNextTick(nReadingNextTick, this); - } else if (state.length) { - emitReadable(this); - } + +} +var queue = []; +var draining = false; +var currentQueue; +var queueIndex = -1; + +function cleanUpNextTick() { + if (!draining || !currentQueue) { + return; } - } + draining = false; + if (currentQueue.length) { + queue = currentQueue.concat(queue); + } else { + queueIndex = -1; + } + if (queue.length) { + drainQueue(); + } +} - return res; +function drainQueue() { + if (draining) { + return; + } + var timeout = runTimeout(cleanUpNextTick); + draining = true; + + var len = queue.length; + while(len) { + currentQueue = queue; + queue = []; + while (++queueIndex < len) { + if (currentQueue) { + currentQueue[queueIndex].run(); + } + } + queueIndex = -1; + len = queue.length; + } + currentQueue = null; + draining = false; + runClearTimeout(timeout); +} + +process.nextTick = function (fun) { + var args = new Array(arguments.length - 1); + if (arguments.length > 1) { + for (var i = 1; i < arguments.length; i++) { + args[i - 1] = arguments[i]; + } + } + queue.push(new Item(fun, args)); + if (queue.length === 1 && !draining) { + runTimeout(drainQueue); + } }; -Readable.prototype.addListener = Readable.prototype.on; -function nReadingNextTick(self) { - debug('readable nexttick read 0'); - self.read(0); +// v8 likes predictible objects +function Item(fun, array) { + this.fun = fun; + this.array = array; } +Item.prototype.run = function () { + this.fun.apply(null, this.array); +}; +process.title = 'browser'; +process.browser = true; +process.env = {}; +process.argv = []; +process.version = ''; // empty string to avoid regexp issues +process.versions = {}; -// pause() and resume() are remnants of the legacy readable stream API -// If the user uses them, then switch into old mode. -Readable.prototype.resume = function () { - var state = this._readableState; - if (!state.flowing) { - debug('resume'); - state.flowing = true; - resume(this, state); +function noop() {} + +process.on = noop; +process.addListener = noop; +process.once = noop; +process.off = noop; +process.removeListener = noop; +process.removeAllListeners = noop; +process.emit = noop; +process.prependListener = noop; +process.prependOnceListener = noop; + +process.listeners = function (name) { return [] } + +process.binding = function (name) { + throw new Error('process.binding is not supported'); +}; + +process.cwd = function () { return '/' }; +process.chdir = function (dir) { + throw new Error('process.chdir is not supported'); +}; +process.umask = function() { return 0; }; + +},{}],24:[function(require,module,exports){ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. + +// a duplex stream is just a stream that is both readable and writable. +// Since JS doesn't have multiple prototypal inheritance, this class +// prototypally inherits from Readable, and then parasitically from +// Writable. + +'use strict'; + +/**/ + +var pna = require('process-nextick-args'); +/**/ + +/**/ +var objectKeys = Object.keys || function (obj) { + var keys = []; + for (var key in obj) { + keys.push(key); + }return keys; +}; +/**/ + +module.exports = Duplex; + +/**/ +var util = Object.create(require('core-util-is')); +util.inherits = require('inherits'); +/**/ + +var Readable = require('./_stream_readable'); +var Writable = require('./_stream_writable'); + +util.inherits(Duplex, Readable); + +{ + // avoid scope creep, the keys array can then be collected + var keys = objectKeys(Writable.prototype); + for (var v = 0; v < keys.length; v++) { + var method = keys[v]; + if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method]; } - return this; +} + +function Duplex(options) { + if (!(this instanceof Duplex)) return new Duplex(options); + + Readable.call(this, options); + Writable.call(this, options); + + if (options && options.readable === false) this.readable = false; + + if (options && options.writable === false) this.writable = false; + + this.allowHalfOpen = true; + if (options && options.allowHalfOpen === false) this.allowHalfOpen = false; + + this.once('end', onend); +} + +Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', { + // making it explicit this property is not enumerable + // because otherwise some prototype manipulation in + // userland will fail + enumerable: false, + get: function () { + return this._writableState.highWaterMark; + } +}); + +// the no-half-open enforcer +function onend() { + // if we allow half-open state, or if the writable side ended, + // then we're ok. + if (this.allowHalfOpen || this._writableState.ended) return; + + // no more data can be written. + // But allow more writes to happen in this tick. + pna.nextTick(onEndNT, this); +} + +function onEndNT(self) { + self.end(); +} + +Object.defineProperty(Duplex.prototype, 'destroyed', { + get: function () { + if (this._readableState === undefined || this._writableState === undefined) { + return false; + } + return this._readableState.destroyed && this._writableState.destroyed; + }, + set: function (value) { + // we ignore the value if the stream + // has not been initialized yet + if (this._readableState === undefined || this._writableState === undefined) { + return; + } + + // backward compatibility, the user is explicitly + // managing destroyed + this._readableState.destroyed = value; + this._writableState.destroyed = value; + } +}); + +Duplex.prototype._destroy = function (err, cb) { + this.push(null); + this.end(); + + pna.nextTick(cb, err); }; +},{"./_stream_readable":26,"./_stream_writable":28,"core-util-is":15,"inherits":18,"process-nextick-args":22}],25:[function(require,module,exports){ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. + +// a passthrough stream. +// basically just the most minimal sort of Transform stream. +// Every written chunk gets output as-is. -function resume(stream, state) { - if (!state.resumeScheduled) { - state.resumeScheduled = true; - processNextTick(resume_, stream, state); - } -} +'use strict'; -function resume_(stream, state) { - if (!state.reading) { - debug('resume read 0'); - stream.read(0); - } +module.exports = PassThrough; - state.resumeScheduled = false; - state.awaitDrain = 0; - stream.emit('resume'); - flow(stream); - if (state.flowing && !state.reading) stream.read(0); -} +var Transform = require('./_stream_transform'); -Readable.prototype.pause = function () { - debug('call pause flowing=%j', this._readableState.flowing); - if (false !== this._readableState.flowing) { - debug('pause'); - this._readableState.flowing = false; - this.emit('pause'); - } - return this; -}; +/**/ +var util = Object.create(require('core-util-is')); +util.inherits = require('inherits'); +/**/ -function flow(stream) { - var state = stream._readableState; - debug('flow', state.flowing); - while (state.flowing && stream.read() !== null) {} +util.inherits(PassThrough, Transform); + +function PassThrough(options) { + if (!(this instanceof PassThrough)) return new PassThrough(options); + + Transform.call(this, options); } -// wrap an old-style stream as the async data source. -// This is *not* part of the readable stream interface. -// It is an ugly unfortunate mess of history. -Readable.prototype.wrap = function (stream) { - var state = this._readableState; - var paused = false; +PassThrough.prototype._transform = function (chunk, encoding, cb) { + cb(null, chunk); +}; +},{"./_stream_transform":27,"core-util-is":15,"inherits":18}],26:[function(require,module,exports){ +(function (process,global){(function (){ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. - var self = this; - stream.on('end', function () { - debug('wrapped end'); - if (state.decoder && !state.ended) { - var chunk = state.decoder.end(); - if (chunk && chunk.length) self.push(chunk); - } +'use strict'; - self.push(null); - }); +/**/ - stream.on('data', function (chunk) { - debug('wrapped data'); - if (state.decoder) chunk = state.decoder.write(chunk); +var pna = require('process-nextick-args'); +/**/ - // don't skip over falsy values in objectMode - if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return; +module.exports = Readable; - var ret = self.push(chunk); - if (!ret) { - paused = true; - stream.pause(); - } - }); +/**/ +var isArray = require('isarray'); +/**/ - // proxy all the other methods. - // important when wrapping filters and duplexes. - for (var i in stream) { - if (this[i] === undefined && typeof stream[i] === 'function') { - this[i] = function (method) { - return function () { - return stream[method].apply(stream, arguments); - }; - }(i); - } - } +/**/ +var Duplex; +/**/ - // proxy certain important events. - for (var n = 0; n < kProxyEvents.length; n++) { - stream.on(kProxyEvents[n], self.emit.bind(self, kProxyEvents[n])); - } +Readable.ReadableState = ReadableState; - // when we try to consume some more bytes, simply unpause the - // underlying stream. - self._read = function (n) { - debug('wrapped _read', n); - if (paused) { - paused = false; - stream.resume(); - } - }; +/**/ +var EE = require('events').EventEmitter; - return self; +var EElistenerCount = function (emitter, type) { + return emitter.listeners(type).length; }; +/**/ -// exposed for testing purposes only. -Readable._fromList = fromList; - -// Pluck off n bytes from an array of buffers. -// Length is the combined lengths of all the buffers in the list. -// This function is designed to be inlinable, so please take care when making -// changes to the function body. -function fromList(n, state) { - // nothing buffered - if (state.length === 0) return null; +/**/ +var Stream = require('./internal/streams/stream'); +/**/ - var ret; - if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) { - // read it all, truncate the list - if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length); - state.buffer.clear(); - } else { - // read part of list - ret = fromListPartial(n, state.buffer, state.decoder); - } +/**/ - return ret; +var Buffer = require('safe-buffer').Buffer; +var OurUint8Array = global.Uint8Array || function () {}; +function _uint8ArrayToBuffer(chunk) { + return Buffer.from(chunk); } - -// Extracts only enough buffered data to satisfy the amount requested. -// This function is designed to be inlinable, so please take care when making -// changes to the function body. -function fromListPartial(n, list, hasStrings) { - var ret; - if (n < list.head.data.length) { - // slice is the same for buffers and strings - ret = list.head.data.slice(0, n); - list.head.data = list.head.data.slice(n); - } else if (n === list.head.data.length) { - // first chunk is a perfect match - ret = list.shift(); - } else { - // result spans more than one buffer - ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list); - } - return ret; +function _isUint8Array(obj) { + return Buffer.isBuffer(obj) || obj instanceof OurUint8Array; } -// Copies a specified amount of characters from the list of buffered data -// chunks. -// This function is designed to be inlinable, so please take care when making -// changes to the function body. -function copyFromBufferString(n, list) { - var p = list.head; - var c = 1; - var ret = p.data; - n -= ret.length; - while (p = p.next) { - var str = p.data; - var nb = n > str.length ? str.length : n; - if (nb === str.length) ret += str;else ret += str.slice(0, n); - n -= nb; - if (n === 0) { - if (nb === str.length) { - ++c; - if (p.next) list.head = p.next;else list.head = list.tail = null; - } else { - list.head = p; - p.data = str.slice(nb); - } - break; - } - ++c; - } - list.length -= c; - return ret; +/**/ + +/**/ +var util = Object.create(require('core-util-is')); +util.inherits = require('inherits'); +/**/ + +/**/ +var debugUtil = require('util'); +var debug = void 0; +if (debugUtil && debugUtil.debuglog) { + debug = debugUtil.debuglog('stream'); +} else { + debug = function () {}; } +/**/ -// Copies a specified amount of bytes from the list of buffered data chunks. -// This function is designed to be inlinable, so please take care when making -// changes to the function body. -function copyFromBuffer(n, list) { - var ret = Buffer.allocUnsafe(n); - var p = list.head; - var c = 1; - p.data.copy(ret); - n -= p.data.length; - while (p = p.next) { - var buf = p.data; - var nb = n > buf.length ? buf.length : n; - buf.copy(ret, ret.length - n, 0, nb); - n -= nb; - if (n === 0) { - if (nb === buf.length) { - ++c; - if (p.next) list.head = p.next;else list.head = list.tail = null; - } else { - list.head = p; - p.data = buf.slice(nb); - } - break; - } - ++c; - } - list.length -= c; - return ret; +var BufferList = require('./internal/streams/BufferList'); +var destroyImpl = require('./internal/streams/destroy'); +var StringDecoder; + +util.inherits(Readable, Stream); + +var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume']; + +function prependListener(emitter, event, fn) { + // Sadly this is not cacheable as some libraries bundle their own + // event emitter implementation with them. + if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn); + + // This is a hack to make sure that our error handler is attached before any + // userland ones. NEVER DO THIS. This is here only because this code needs + // to continue to work with older versions of Node.js that do not include + // the prependListener() method. The goal is to eventually remove this hack. + if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]]; } -function endReadable(stream) { - var state = stream._readableState; +function ReadableState(options, stream) { + Duplex = Duplex || require('./_stream_duplex'); - // If we get here before consuming all the bytes, then that is a - // bug in node. Should never happen. - if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream'); + options = options || {}; - if (!state.endEmitted) { - state.ended = true; - processNextTick(endReadableNT, state, stream); - } -} + // Duplex streams are both readable and writable, but share + // the same options object. + // However, some cases require setting options to different + // values for the readable and the writable sides of the duplex stream. + // These options can be provided separately as readableXXX and writableXXX. + var isDuplex = stream instanceof Duplex; -function endReadableNT(state, stream) { - // Check that we didn't get one last unshift. - if (!state.endEmitted && state.length === 0) { - state.endEmitted = true; - stream.readable = false; - stream.emit('end'); - } -} + // object stream flag. Used to make read(n) ignore n and to + // make all the buffer merging and length checks go away + this.objectMode = !!options.objectMode; -function forEach(xs, f) { - for (var i = 0, l = xs.length; i < l; i++) { - f(xs[i], i); - } -} + if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode; -function indexOf(xs, x) { - for (var i = 0, l = xs.length; i < l; i++) { - if (xs[i] === x) return i; + // the point at which it stops calling _read() to fill the buffer + // Note: 0 is a valid value, means "don't call _read preemptively ever" + var hwm = options.highWaterMark; + var readableHwm = options.readableHighWaterMark; + var defaultHwm = this.objectMode ? 16 : 16 * 1024; + + if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (readableHwm || readableHwm === 0)) this.highWaterMark = readableHwm;else this.highWaterMark = defaultHwm; + + // cast to ints. + this.highWaterMark = Math.floor(this.highWaterMark); + + // A linked list is used to store data chunks instead of an array because the + // linked list can remove elements from the beginning faster than + // array.shift() + this.buffer = new BufferList(); + this.length = 0; + this.pipes = null; + this.pipesCount = 0; + this.flowing = null; + this.ended = false; + this.endEmitted = false; + this.reading = false; + + // a flag to be able to tell if the event 'readable'/'data' is emitted + // immediately, or on a later tick. We set this to true at first, because + // any actions that shouldn't happen until "later" should generally also + // not happen before the first read call. + this.sync = true; + + // whenever we return null, then we set a flag to say + // that we're awaiting a 'readable' event emission. + this.needReadable = false; + this.emittedReadable = false; + this.readableListening = false; + this.resumeScheduled = false; + + // has it been destroyed + this.destroyed = false; + + // Crypto is kind of old and crusty. Historically, its default string + // encoding is 'binary' so we have to make this configurable. + // Everything else in the universe uses 'utf8', though. + this.defaultEncoding = options.defaultEncoding || 'utf8'; + + // the number of writers that are awaiting a drain event in .pipe()s + this.awaitDrain = 0; + + // if true, a maybeReadMore has been scheduled + this.readingMore = false; + + this.decoder = null; + this.encoding = null; + if (options.encoding) { + if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder; + this.decoder = new StringDecoder(options.encoding); + this.encoding = options.encoding; } - return -1; } -}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"./_stream_duplex":19,"./internal/streams/BufferList":24,"./internal/streams/destroy":25,"./internal/streams/stream":26,"_process":17,"core-util-is":10,"events":11,"inherits":13,"isarray":15,"process-nextick-args":16,"safe-buffer":28,"string_decoder/":29,"util":8}],22:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - -// a transform stream is a readable/writable stream where you do -// something with the data. Sometimes it's called a "filter", -// but that's not a great name for it, since that implies a thing where -// some bits pass through, and others are simply ignored. (That would -// be a valid example of a transform, of course.) -// -// While the output is causally related to the input, it's not a -// necessarily symmetric or synchronous transformation. For example, -// a zlib stream might take multiple plain-text writes(), and then -// emit a single compressed chunk some time in the future. -// -// Here's how this works: -// -// The Transform stream has all the aspects of the readable and writable -// stream classes. When you write(chunk), that calls _write(chunk,cb) -// internally, and returns false if there's a lot of pending writes -// buffered up. When you call read(), that calls _read(n) until -// there's enough pending readable data buffered up. -// -// In a transform stream, the written data is placed in a buffer. When -// _read(n) is called, it transforms the queued up data, calling the -// buffered _write cb's as it consumes chunks. If consuming a single -// written chunk would result in multiple output chunks, then the first -// outputted bit calls the readcb, and subsequent chunks just go into -// the read buffer, and will cause it to emit 'readable' if necessary. -// -// This way, back-pressure is actually determined by the reading side, -// since _read has to be called to start processing a new chunk. However, -// a pathological inflate type of transform can cause excessive buffering -// here. For example, imagine a stream where every byte of input is -// interpreted as an integer from 0-255, and then results in that many -// bytes of output. Writing the 4 bytes {ff,ff,ff,ff} would result in -// 1kb of data being output. In this case, you could write a very small -// amount of input, and end up with a very large amount of output. In -// such a pathological inflating mechanism, there'd be no way to tell -// the system to stop doing the transform. A single 4MB write could -// cause the system to run out of memory. -// -// However, even in such a pathological case, only a single written chunk -// would be consumed, and then the rest would wait (un-transformed) until -// the results of the previous transformed chunk were consumed. -'use strict'; +function Readable(options) { + Duplex = Duplex || require('./_stream_duplex'); -module.exports = Transform; + if (!(this instanceof Readable)) return new Readable(options); -var Duplex = require('./_stream_duplex'); + this._readableState = new ReadableState(options, this); -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ + // legacy + this.readable = true; -util.inherits(Transform, Duplex); + if (options) { + if (typeof options.read === 'function') this._read = options.read; -function TransformState(stream) { - this.afterTransform = function (er, data) { - return afterTransform(stream, er, data); - }; + if (typeof options.destroy === 'function') this._destroy = options.destroy; + } - this.needTransform = false; - this.transforming = false; - this.writecb = null; - this.writechunk = null; - this.writeencoding = null; + Stream.call(this); } -function afterTransform(stream, er, data) { - var ts = stream._transformState; - ts.transforming = false; +Object.defineProperty(Readable.prototype, 'destroyed', { + get: function () { + if (this._readableState === undefined) { + return false; + } + return this._readableState.destroyed; + }, + set: function (value) { + // we ignore the value if the stream + // has not been initialized yet + if (!this._readableState) { + return; + } - var cb = ts.writecb; + // backward compatibility, the user is explicitly + // managing destroyed + this._readableState.destroyed = value; + } +}); - if (!cb) { - return stream.emit('error', new Error('write callback called multiple times')); +Readable.prototype.destroy = destroyImpl.destroy; +Readable.prototype._undestroy = destroyImpl.undestroy; +Readable.prototype._destroy = function (err, cb) { + this.push(null); + cb(err); +}; + +// Manually shove something into the read() buffer. +// This returns true if the highWaterMark has not been hit yet, +// similar to how Writable.write() returns true if you should +// write() some more. +Readable.prototype.push = function (chunk, encoding) { + var state = this._readableState; + var skipChunkCheck; + + if (!state.objectMode) { + if (typeof chunk === 'string') { + encoding = encoding || state.defaultEncoding; + if (encoding !== state.encoding) { + chunk = Buffer.from(chunk, encoding); + encoding = ''; + } + skipChunkCheck = true; + } + } else { + skipChunkCheck = true; } - ts.writechunk = null; - ts.writecb = null; + return readableAddChunk(this, chunk, encoding, false, skipChunkCheck); +}; + +// Unshift should *always* be something directly out of read() +Readable.prototype.unshift = function (chunk) { + return readableAddChunk(this, chunk, null, true, false); +}; + +function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) { + var state = stream._readableState; + if (chunk === null) { + state.reading = false; + onEofChunk(stream, state); + } else { + var er; + if (!skipChunkCheck) er = chunkInvalid(state, chunk); + if (er) { + stream.emit('error', er); + } else if (state.objectMode || chunk && chunk.length > 0) { + if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) { + chunk = _uint8ArrayToBuffer(chunk); + } + + if (addToFront) { + if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true); + } else if (state.ended) { + stream.emit('error', new Error('stream.push() after EOF')); + } else { + state.reading = false; + if (state.decoder && !encoding) { + chunk = state.decoder.write(chunk); + if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state); + } else { + addChunk(stream, state, chunk, false); + } + } + } else if (!addToFront) { + state.reading = false; + } + } - if (data !== null && data !== undefined) stream.push(data); + return needMoreData(state); +} - cb(er); +function addChunk(stream, state, chunk, addToFront) { + if (state.flowing && state.length === 0 && !state.sync) { + stream.emit('data', chunk); + stream.read(0); + } else { + // update the buffer info. + state.length += state.objectMode ? 1 : chunk.length; + if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk); - var rs = stream._readableState; - rs.reading = false; - if (rs.needReadable || rs.length < rs.highWaterMark) { - stream._read(rs.highWaterMark); + if (state.needReadable) emitReadable(stream); } + maybeReadMore(stream, state); } -function Transform(options) { - if (!(this instanceof Transform)) return new Transform(options); - - Duplex.call(this, options); - - this._transformState = new TransformState(this); - - var stream = this; - - // start out asking for a readable event once data is transformed. - this._readableState.needReadable = true; - - // we have implemented the _read method, and done the other things - // that Readable wants before the first _read call, so unset the - // sync guard flag. - this._readableState.sync = false; - - if (options) { - if (typeof options.transform === 'function') this._transform = options.transform; - - if (typeof options.flush === 'function') this._flush = options.flush; +function chunkInvalid(state, chunk) { + var er; + if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) { + er = new TypeError('Invalid non-string/buffer chunk'); } - - // When the writable side finishes, then flush out anything remaining. - this.once('prefinish', function () { - if (typeof this._flush === 'function') this._flush(function (er, data) { - done(stream, er, data); - });else done(stream); - }); + return er; } -Transform.prototype.push = function (chunk, encoding) { - this._transformState.needTransform = false; - return Duplex.prototype.push.call(this, chunk, encoding); -}; +// if it's past the high water mark, we can push in some more. +// Also, if we have no data yet, we can stand some +// more bytes. This is to work around cases where hwm=0, +// such as the repl. Also, if the push() triggered a +// readable event, and the user called read(largeNumber) such that +// needReadable was set, then we ought to push more, so that another +// 'readable' event will be triggered. +function needMoreData(state) { + return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0); +} -// This is the part where you do stuff! -// override this function in implementation classes. -// 'chunk' is an input chunk. -// -// Call `push(newChunk)` to pass along transformed output -// to the readable side. You may call 'push' zero or more times. -// -// Call `cb(err)` when you are done with this chunk. If you pass -// an error, then that'll put the hurt on the whole operation. If you -// never call cb(), then you'll never get another chunk. -Transform.prototype._transform = function (chunk, encoding, cb) { - throw new Error('_transform() is not implemented'); +Readable.prototype.isPaused = function () { + return this._readableState.flowing === false; }; -Transform.prototype._write = function (chunk, encoding, cb) { - var ts = this._transformState; - ts.writecb = cb; - ts.writechunk = chunk; - ts.writeencoding = encoding; - if (!ts.transforming) { - var rs = this._readableState; - if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark); - } +// backwards compatibility. +Readable.prototype.setEncoding = function (enc) { + if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder; + this._readableState.decoder = new StringDecoder(enc); + this._readableState.encoding = enc; + return this; }; -// Doesn't matter what the args are here. -// _transform does all the work. -// That we got here means that the readable side wants more data. -Transform.prototype._read = function (n) { - var ts = this._transformState; - - if (ts.writechunk !== null && ts.writecb && !ts.transforming) { - ts.transforming = true; - this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform); +// Don't raise the hwm > 8MB +var MAX_HWM = 0x800000; +function computeNewHighWaterMark(n) { + if (n >= MAX_HWM) { + n = MAX_HWM; } else { - // mark that we need a transform, so that any data that comes in - // will get processed, now that we've asked for it. - ts.needTransform = true; + // Get the next highest power of 2 to prevent increasing hwm excessively in + // tiny amounts + n--; + n |= n >>> 1; + n |= n >>> 2; + n |= n >>> 4; + n |= n >>> 8; + n |= n >>> 16; + n++; } -}; - -Transform.prototype._destroy = function (err, cb) { - var _this = this; - - Duplex.prototype._destroy.call(this, err, function (err2) { - cb(err2); - _this.emit('close'); - }); -}; - -function done(stream, er, data) { - if (er) return stream.emit('error', er); - - if (data !== null && data !== undefined) stream.push(data); - - // if there's nothing in the write buffer, then that means - // that nothing more will ever be provided - var ws = stream._writableState; - var ts = stream._transformState; + return n; +} - if (ws.length) throw new Error('Calling transform done when ws.length != 0'); +// This function is designed to be inlinable, so please take care when making +// changes to the function body. +function howMuchToRead(n, state) { + if (n <= 0 || state.length === 0 && state.ended) return 0; + if (state.objectMode) return 1; + if (n !== n) { + // Only flow one buffer at a time + if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length; + } + // If we're asking for more than the current hwm, then raise the hwm. + if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n); + if (n <= state.length) return n; + // Don't have enough + if (!state.ended) { + state.needReadable = true; + return 0; + } + return state.length; +} - if (ts.transforming) throw new Error('Calling transform done when still transforming'); +// you can override either this method, or the async _read(n) below. +Readable.prototype.read = function (n) { + debug('read', n); + n = parseInt(n, 10); + var state = this._readableState; + var nOrig = n; - return stream.push(null); -} -},{"./_stream_duplex":19,"core-util-is":10,"inherits":13}],23:[function(require,module,exports){ -(function (process,global){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. + if (n !== 0) state.emittedReadable = false; -// A bit simpler than readable streams. -// Implement an async ._write(chunk, encoding, cb), and it'll handle all -// the drain event emission and buffering. + // if we're doing read(0) to trigger a readable event, but we + // already have a bunch of data in the buffer, then just trigger + // the 'readable' event and move on. + if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) { + debug('read: emitReadable', state.length, state.ended); + if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this); + return null; + } -'use strict'; + n = howMuchToRead(n, state); -/**/ + // if we've ended, and we're now clear, then finish it up. + if (n === 0 && state.ended) { + if (state.length === 0) endReadable(this); + return null; + } -var processNextTick = require('process-nextick-args'); -/**/ + // All the actual chunk generation logic needs to be + // *below* the call to _read. The reason is that in certain + // synthetic stream cases, such as passthrough streams, _read + // may be a completely synchronous operation which may change + // the state of the read buffer, providing enough data when + // before there was *not* enough. + // + // So, the steps are: + // 1. Figure out what the state of things will be after we do + // a read from the buffer. + // + // 2. If that resulting state will trigger a _read, then call _read. + // Note that this may be asynchronous, or synchronous. Yes, it is + // deeply ugly to write APIs this way, but that still doesn't mean + // that the Readable class should behave improperly, as streams are + // designed to be sync/async agnostic. + // Take note if the _read call is sync or async (ie, if the read call + // has returned yet), so that we know whether or not it's safe to emit + // 'readable' etc. + // + // 3. Actually pull the requested chunks out of the buffer and return. -module.exports = Writable; + // if we need a readable event, then we need to do some reading. + var doRead = state.needReadable; + debug('need readable', doRead); -/* */ -function WriteReq(chunk, encoding, cb) { - this.chunk = chunk; - this.encoding = encoding; - this.callback = cb; - this.next = null; -} + // if we currently have less than the highWaterMark, then also read some + if (state.length === 0 || state.length - n < state.highWaterMark) { + doRead = true; + debug('length less than watermark', doRead); + } -// It seems a linked list but it is not -// there will be only 2 of these for each stream -function CorkedRequest(state) { - var _this = this; + // however, if we've ended, then there's no point, and if we're already + // reading, then it's unnecessary. + if (state.ended || state.reading) { + doRead = false; + debug('reading or ended', doRead); + } else if (doRead) { + debug('do read'); + state.reading = true; + state.sync = true; + // if the length is currently zero, then we *need* a readable event. + if (state.length === 0) state.needReadable = true; + // call internal read method + this._read(state.highWaterMark); + state.sync = false; + // If _read pushed data synchronously, then `reading` will be false, + // and we need to re-evaluate how much data we can return to the user. + if (!state.reading) n = howMuchToRead(nOrig, state); + } - this.next = null; - this.entry = null; - this.finish = function () { - onCorkedFinish(_this, state); - }; -} -/* */ + var ret; + if (n > 0) ret = fromList(n, state);else ret = null; -/**/ -var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : processNextTick; -/**/ + if (ret === null) { + state.needReadable = true; + n = 0; + } else { + state.length -= n; + } -/**/ -var Duplex; -/**/ + if (state.length === 0) { + // If we have nothing in the buffer, then we want to know + // as soon as we *do* get something into the buffer. + if (!state.ended) state.needReadable = true; -Writable.WritableState = WritableState; + // If we tried to read() past the EOF, then emit end on the next tick. + if (nOrig !== n && state.ended) endReadable(this); + } -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ + if (ret !== null) this.emit('data', ret); -/**/ -var internalUtil = { - deprecate: require('util-deprecate') + return ret; }; -/**/ -/**/ -var Stream = require('./internal/streams/stream'); -/**/ +function onEofChunk(stream, state) { + if (state.ended) return; + if (state.decoder) { + var chunk = state.decoder.end(); + if (chunk && chunk.length) { + state.buffer.push(chunk); + state.length += state.objectMode ? 1 : chunk.length; + } + } + state.ended = true; -/**/ -var Buffer = require('safe-buffer').Buffer; -var OurUint8Array = global.Uint8Array || function () {}; -function _uint8ArrayToBuffer(chunk) { - return Buffer.from(chunk); + // emit 'readable' now to make sure it gets picked up. + emitReadable(stream); } -function _isUint8Array(obj) { - return Buffer.isBuffer(obj) || obj instanceof OurUint8Array; + +// Don't emit readable right away in sync mode, because this can trigger +// another read() call => stack overflow. This way, it might trigger +// a nextTick recursion warning, but that's not so bad. +function emitReadable(stream) { + var state = stream._readableState; + state.needReadable = false; + if (!state.emittedReadable) { + debug('emitReadable', state.flowing); + state.emittedReadable = true; + if (state.sync) pna.nextTick(emitReadable_, stream);else emitReadable_(stream); + } } -/**/ -var destroyImpl = require('./internal/streams/destroy'); +function emitReadable_(stream) { + debug('emit readable'); + stream.emit('readable'); + flow(stream); +} -util.inherits(Writable, Stream); +// at this point, the user has presumably seen the 'readable' event, +// and called read() to consume some data. that may have triggered +// in turn another _read(n) call, in which case reading = true if +// it's in progress. +// However, if we're not ended, or reading, and the length < hwm, +// then go ahead and try to read some more preemptively. +function maybeReadMore(stream, state) { + if (!state.readingMore) { + state.readingMore = true; + pna.nextTick(maybeReadMore_, stream, state); + } +} -function nop() {} +function maybeReadMore_(stream, state) { + var len = state.length; + while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) { + debug('maybeReadMore read 0'); + stream.read(0); + if (len === state.length) + // didn't get any data, stop spinning. + break;else len = state.length; + } + state.readingMore = false; +} -function WritableState(options, stream) { - Duplex = Duplex || require('./_stream_duplex'); +// abstract method. to be overridden in specific implementation classes. +// call cb(er, data) where data is <= n in length. +// for virtual (non-string, non-buffer) streams, "length" is somewhat +// arbitrary, and perhaps not very meaningful. +Readable.prototype._read = function (n) { + this.emit('error', new Error('_read() is not implemented')); +}; - options = options || {}; +Readable.prototype.pipe = function (dest, pipeOpts) { + var src = this; + var state = this._readableState; - // object stream flag to indicate whether or not this stream - // contains buffers or objects. - this.objectMode = !!options.objectMode; + switch (state.pipesCount) { + case 0: + state.pipes = dest; + break; + case 1: + state.pipes = [state.pipes, dest]; + break; + default: + state.pipes.push(dest); + break; + } + state.pipesCount += 1; + debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts); - if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.writableObjectMode; + var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr; - // the point at which write() starts returning false - // Note: 0 is a valid value, means that we always return false if - // the entire buffer is not flushed immediately on write() - var hwm = options.highWaterMark; - var defaultHwm = this.objectMode ? 16 : 16 * 1024; - this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm; + var endFn = doEnd ? onend : unpipe; + if (state.endEmitted) pna.nextTick(endFn);else src.once('end', endFn); - // cast to ints. - this.highWaterMark = Math.floor(this.highWaterMark); + dest.on('unpipe', onunpipe); + function onunpipe(readable, unpipeInfo) { + debug('onunpipe'); + if (readable === src) { + if (unpipeInfo && unpipeInfo.hasUnpiped === false) { + unpipeInfo.hasUnpiped = true; + cleanup(); + } + } + } - // if _final has been called - this.finalCalled = false; + function onend() { + debug('onend'); + dest.end(); + } - // drain event flag. - this.needDrain = false; - // at the start of calling end() - this.ending = false; - // when end() has been called, and returned - this.ended = false; - // when 'finish' is emitted - this.finished = false; + // when the dest drains, it reduces the awaitDrain counter + // on the source. This would be more elegant with a .once() + // handler in flow(), but adding and removing repeatedly is + // too slow. + var ondrain = pipeOnDrain(src); + dest.on('drain', ondrain); - // has it been destroyed - this.destroyed = false; + var cleanedUp = false; + function cleanup() { + debug('cleanup'); + // cleanup event handlers once the pipe is broken + dest.removeListener('close', onclose); + dest.removeListener('finish', onfinish); + dest.removeListener('drain', ondrain); + dest.removeListener('error', onerror); + dest.removeListener('unpipe', onunpipe); + src.removeListener('end', onend); + src.removeListener('end', unpipe); + src.removeListener('data', ondata); - // should we decode strings into buffers before passing to _write? - // this is here so that some node-core streams can optimize string - // handling at a lower level. - var noDecode = options.decodeStrings === false; - this.decodeStrings = !noDecode; + cleanedUp = true; - // Crypto is kind of old and crusty. Historically, its default string - // encoding is 'binary' so we have to make this configurable. - // Everything else in the universe uses 'utf8', though. - this.defaultEncoding = options.defaultEncoding || 'utf8'; + // if the reader is waiting for a drain event from this + // specific writer, then it would cause it to never start + // flowing again. + // So, if this is awaiting a drain, then we just call it now. + // If we don't know, then assume that we are waiting for one. + if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain(); + } - // not an actual buffer we keep track of, but a measurement - // of how much we're waiting to get pushed to some underlying - // socket or file. - this.length = 0; + // If the user pushes more data while we're writing to dest then we'll end up + // in ondata again. However, we only want to increase awaitDrain once because + // dest will only emit one 'drain' event for the multiple writes. + // => Introduce a guard on increasing awaitDrain. + var increasedAwaitDrain = false; + src.on('data', ondata); + function ondata(chunk) { + debug('ondata'); + increasedAwaitDrain = false; + var ret = dest.write(chunk); + if (false === ret && !increasedAwaitDrain) { + // If the user unpiped during `dest.write()`, it is possible + // to get stuck in a permanently paused state if that write + // also returned false. + // => Check whether `dest` is still a piping destination. + if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) { + debug('false write response, pause', src._readableState.awaitDrain); + src._readableState.awaitDrain++; + increasedAwaitDrain = true; + } + src.pause(); + } + } - // a flag to see when we're in the middle of a write. - this.writing = false; + // if the dest has an error, then stop piping into it. + // however, don't suppress the throwing behavior for this. + function onerror(er) { + debug('onerror', er); + unpipe(); + dest.removeListener('error', onerror); + if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er); + } + + // Make sure our error handler is attached before userland ones. + prependListener(dest, 'error', onerror); + + // Both close and finish should trigger unpipe, but only once. + function onclose() { + dest.removeListener('finish', onfinish); + unpipe(); + } + dest.once('close', onclose); + function onfinish() { + debug('onfinish'); + dest.removeListener('close', onclose); + unpipe(); + } + dest.once('finish', onfinish); + + function unpipe() { + debug('unpipe'); + src.unpipe(dest); + } - // when true all writes will be buffered until .uncork() call - this.corked = 0; + // tell the dest that it's being piped to + dest.emit('pipe', src); - // a flag to be able to tell if the onwrite cb is called immediately, - // or on a later tick. We set this to true at first, because any - // actions that shouldn't happen until "later" should generally also - // not happen before the first write call. - this.sync = true; + // start the flow if it hasn't been started already. + if (!state.flowing) { + debug('pipe resume'); + src.resume(); + } - // a flag to know if we're processing previously buffered items, which - // may call the _write() callback in the same tick, so that we don't - // end up in an overlapped onwrite situation. - this.bufferProcessing = false; + return dest; +}; - // the callback that's passed to _write(chunk,cb) - this.onwrite = function (er) { - onwrite(stream, er); +function pipeOnDrain(src) { + return function () { + var state = src._readableState; + debug('pipeOnDrain', state.awaitDrain); + if (state.awaitDrain) state.awaitDrain--; + if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) { + state.flowing = true; + flow(src); + } }; +} - // the callback that the user supplies to write(chunk,encoding,cb) - this.writecb = null; - - // the amount that is being written when _write is called. - this.writelen = 0; +Readable.prototype.unpipe = function (dest) { + var state = this._readableState; + var unpipeInfo = { hasUnpiped: false }; - this.bufferedRequest = null; - this.lastBufferedRequest = null; + // if we're not piping anywhere, then do nothing. + if (state.pipesCount === 0) return this; - // number of pending user-supplied write callbacks - // this must be 0 before 'finish' can be emitted - this.pendingcb = 0; + // just one destination. most common case. + if (state.pipesCount === 1) { + // passed in one, but it's not the right one. + if (dest && dest !== state.pipes) return this; - // emit prefinish if the only thing we're waiting for is _write cbs - // This is relevant for synchronous Transform streams - this.prefinished = false; + if (!dest) dest = state.pipes; - // True if the error was already emitted and should not be thrown again - this.errorEmitted = false; + // got a match. + state.pipes = null; + state.pipesCount = 0; + state.flowing = false; + if (dest) dest.emit('unpipe', this, unpipeInfo); + return this; + } - // count buffered requests - this.bufferedRequestCount = 0; + // slow case. multiple pipe destinations. - // allocate the first CorkedRequest, there is always - // one allocated and free to use, and we maintain at most two - this.corkedRequestsFree = new CorkedRequest(this); -} + if (!dest) { + // remove all. + var dests = state.pipes; + var len = state.pipesCount; + state.pipes = null; + state.pipesCount = 0; + state.flowing = false; -WritableState.prototype.getBuffer = function getBuffer() { - var current = this.bufferedRequest; - var out = []; - while (current) { - out.push(current); - current = current.next; + for (var i = 0; i < len; i++) { + dests[i].emit('unpipe', this, unpipeInfo); + }return this; } - return out; -}; -(function () { - try { - Object.defineProperty(WritableState.prototype, 'buffer', { - get: internalUtil.deprecate(function () { - return this.getBuffer(); - }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003') - }); - } catch (_) {} -})(); + // try to find the right one. + var index = indexOf(state.pipes, dest); + if (index === -1) return this; -// Test _writableState for inheritance to account for Duplex streams, -// whose prototype chain only points to Readable. -var realHasInstance; -if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') { - realHasInstance = Function.prototype[Symbol.hasInstance]; - Object.defineProperty(Writable, Symbol.hasInstance, { - value: function (object) { - if (realHasInstance.call(this, object)) return true; + state.pipes.splice(index, 1); + state.pipesCount -= 1; + if (state.pipesCount === 1) state.pipes = state.pipes[0]; - return object && object._writableState instanceof WritableState; - } - }); -} else { - realHasInstance = function (object) { - return object instanceof this; - }; -} + dest.emit('unpipe', this, unpipeInfo); -function Writable(options) { - Duplex = Duplex || require('./_stream_duplex'); + return this; +}; - // Writable ctor is applied to Duplexes, too. - // `realHasInstance` is necessary because using plain `instanceof` - // would return false, as no `_writableState` property is attached. +// set up data events if they are asked for +// Ensure readable listeners eventually get something +Readable.prototype.on = function (ev, fn) { + var res = Stream.prototype.on.call(this, ev, fn); - // Trying to use the custom `instanceof` for Writable here will also break the - // Node.js LazyTransform implementation, which has a non-trivial getter for - // `_writableState` that would lead to infinite recursion. - if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) { - return new Writable(options); + if (ev === 'data') { + // Start flowing on next tick if stream isn't explicitly paused + if (this._readableState.flowing !== false) this.resume(); + } else if (ev === 'readable') { + var state = this._readableState; + if (!state.endEmitted && !state.readableListening) { + state.readableListening = state.needReadable = true; + state.emittedReadable = false; + if (!state.reading) { + pna.nextTick(nReadingNextTick, this); + } else if (state.length) { + emitReadable(this); + } + } } - this._writableState = new WritableState(options, this); - - // legacy. - this.writable = true; + return res; +}; +Readable.prototype.addListener = Readable.prototype.on; - if (options) { - if (typeof options.write === 'function') this._write = options.write; +function nReadingNextTick(self) { + debug('readable nexttick read 0'); + self.read(0); +} - if (typeof options.writev === 'function') this._writev = options.writev; +// pause() and resume() are remnants of the legacy readable stream API +// If the user uses them, then switch into old mode. +Readable.prototype.resume = function () { + var state = this._readableState; + if (!state.flowing) { + debug('resume'); + state.flowing = true; + resume(this, state); + } + return this; +}; - if (typeof options.destroy === 'function') this._destroy = options.destroy; +function resume(stream, state) { + if (!state.resumeScheduled) { + state.resumeScheduled = true; + pna.nextTick(resume_, stream, state); + } +} - if (typeof options.final === 'function') this._final = options.final; +function resume_(stream, state) { + if (!state.reading) { + debug('resume read 0'); + stream.read(0); } - Stream.call(this); + state.resumeScheduled = false; + state.awaitDrain = 0; + stream.emit('resume'); + flow(stream); + if (state.flowing && !state.reading) stream.read(0); } -// Otherwise people can pipe Writable streams, which is just wrong. -Writable.prototype.pipe = function () { - this.emit('error', new Error('Cannot pipe, not readable')); +Readable.prototype.pause = function () { + debug('call pause flowing=%j', this._readableState.flowing); + if (false !== this._readableState.flowing) { + debug('pause'); + this._readableState.flowing = false; + this.emit('pause'); + } + return this; }; -function writeAfterEnd(stream, cb) { - var er = new Error('write after end'); - // TODO: defer error events consistently everywhere, not just the cb - stream.emit('error', er); - processNextTick(cb, er); +function flow(stream) { + var state = stream._readableState; + debug('flow', state.flowing); + while (state.flowing && stream.read() !== null) {} } -// Checks that a user-supplied chunk is valid, especially for the particular -// mode the stream is in. Currently this means that `null` is never accepted -// and undefined/non-string values are only allowed in object mode. -function validChunk(stream, state, chunk, cb) { - var valid = true; - var er = false; +// wrap an old-style stream as the async data source. +// This is *not* part of the readable stream interface. +// It is an ugly unfortunate mess of history. +Readable.prototype.wrap = function (stream) { + var _this = this; - if (chunk === null) { - er = new TypeError('May not write null values to stream'); - } else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) { - er = new TypeError('Invalid non-string/buffer chunk'); + var state = this._readableState; + var paused = false; + + stream.on('end', function () { + debug('wrapped end'); + if (state.decoder && !state.ended) { + var chunk = state.decoder.end(); + if (chunk && chunk.length) _this.push(chunk); + } + + _this.push(null); + }); + + stream.on('data', function (chunk) { + debug('wrapped data'); + if (state.decoder) chunk = state.decoder.write(chunk); + + // don't skip over falsy values in objectMode + if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return; + + var ret = _this.push(chunk); + if (!ret) { + paused = true; + stream.pause(); + } + }); + + // proxy all the other methods. + // important when wrapping filters and duplexes. + for (var i in stream) { + if (this[i] === undefined && typeof stream[i] === 'function') { + this[i] = function (method) { + return function () { + return stream[method].apply(stream, arguments); + }; + }(i); + } } - if (er) { - stream.emit('error', er); - processNextTick(cb, er); - valid = false; + + // proxy certain important events. + for (var n = 0; n < kProxyEvents.length; n++) { + stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n])); } - return valid; -} -Writable.prototype.write = function (chunk, encoding, cb) { - var state = this._writableState; - var ret = false; - var isBuf = _isUint8Array(chunk) && !state.objectMode; + // when we try to consume some more bytes, simply unpause the + // underlying stream. + this._read = function (n) { + debug('wrapped _read', n); + if (paused) { + paused = false; + stream.resume(); + } + }; - if (isBuf && !Buffer.isBuffer(chunk)) { - chunk = _uint8ArrayToBuffer(chunk); - } + return this; +}; - if (typeof encoding === 'function') { - cb = encoding; - encoding = null; +Object.defineProperty(Readable.prototype, 'readableHighWaterMark', { + // making it explicit this property is not enumerable + // because otherwise some prototype manipulation in + // userland will fail + enumerable: false, + get: function () { + return this._readableState.highWaterMark; } +}); - if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding; +// exposed for testing purposes only. +Readable._fromList = fromList; - if (typeof cb !== 'function') cb = nop; +// Pluck off n bytes from an array of buffers. +// Length is the combined lengths of all the buffers in the list. +// This function is designed to be inlinable, so please take care when making +// changes to the function body. +function fromList(n, state) { + // nothing buffered + if (state.length === 0) return null; - if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) { - state.pendingcb++; - ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb); + var ret; + if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) { + // read it all, truncate the list + if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length); + state.buffer.clear(); + } else { + // read part of list + ret = fromListPartial(n, state.buffer, state.decoder); } return ret; -}; +} -Writable.prototype.cork = function () { - var state = this._writableState; +// Extracts only enough buffered data to satisfy the amount requested. +// This function is designed to be inlinable, so please take care when making +// changes to the function body. +function fromListPartial(n, list, hasStrings) { + var ret; + if (n < list.head.data.length) { + // slice is the same for buffers and strings + ret = list.head.data.slice(0, n); + list.head.data = list.head.data.slice(n); + } else if (n === list.head.data.length) { + // first chunk is a perfect match + ret = list.shift(); + } else { + // result spans more than one buffer + ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list); + } + return ret; +} - state.corked++; -}; +// Copies a specified amount of characters from the list of buffered data +// chunks. +// This function is designed to be inlinable, so please take care when making +// changes to the function body. +function copyFromBufferString(n, list) { + var p = list.head; + var c = 1; + var ret = p.data; + n -= ret.length; + while (p = p.next) { + var str = p.data; + var nb = n > str.length ? str.length : n; + if (nb === str.length) ret += str;else ret += str.slice(0, n); + n -= nb; + if (n === 0) { + if (nb === str.length) { + ++c; + if (p.next) list.head = p.next;else list.head = list.tail = null; + } else { + list.head = p; + p.data = str.slice(nb); + } + break; + } + ++c; + } + list.length -= c; + return ret; +} -Writable.prototype.uncork = function () { - var state = this._writableState; +// Copies a specified amount of bytes from the list of buffered data chunks. +// This function is designed to be inlinable, so please take care when making +// changes to the function body. +function copyFromBuffer(n, list) { + var ret = Buffer.allocUnsafe(n); + var p = list.head; + var c = 1; + p.data.copy(ret); + n -= p.data.length; + while (p = p.next) { + var buf = p.data; + var nb = n > buf.length ? buf.length : n; + buf.copy(ret, ret.length - n, 0, nb); + n -= nb; + if (n === 0) { + if (nb === buf.length) { + ++c; + if (p.next) list.head = p.next;else list.head = list.tail = null; + } else { + list.head = p; + p.data = buf.slice(nb); + } + break; + } + ++c; + } + list.length -= c; + return ret; +} - if (state.corked) { - state.corked--; +function endReadable(stream) { + var state = stream._readableState; - if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state); - } -}; + // If we get here before consuming all the bytes, then that is a + // bug in node. Should never happen. + if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream'); -Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) { - // node::ParseEncoding() requires lower case. - if (typeof encoding === 'string') encoding = encoding.toLowerCase(); - if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding); - this._writableState.defaultEncoding = encoding; - return this; -}; + if (!state.endEmitted) { + state.ended = true; + pna.nextTick(endReadableNT, state, stream); + } +} -function decodeChunk(state, chunk, encoding) { - if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') { - chunk = Buffer.from(chunk, encoding); +function endReadableNT(state, stream) { + // Check that we didn't get one last unshift. + if (!state.endEmitted && state.length === 0) { + state.endEmitted = true; + stream.readable = false; + stream.emit('end'); } - return chunk; } -// if we're already writing something, then just put this -// in the queue, and wait our turn. Otherwise, call _write -// If we return false, then we need a drain event, so set that flag. -function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) { - if (!isBuf) { - var newChunk = decodeChunk(state, chunk, encoding); - if (chunk !== newChunk) { - isBuf = true; - encoding = 'buffer'; - chunk = newChunk; - } +function indexOf(xs, x) { + for (var i = 0, l = xs.length; i < l; i++) { + if (xs[i] === x) return i; } - var len = state.objectMode ? 1 : chunk.length; + return -1; +} +}).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{"./_stream_duplex":24,"./internal/streams/BufferList":29,"./internal/streams/destroy":30,"./internal/streams/stream":31,"_process":23,"core-util-is":15,"events":16,"inherits":18,"isarray":20,"process-nextick-args":22,"safe-buffer":32,"string_decoder/":33,"util":13}],27:[function(require,module,exports){ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. + +// a transform stream is a readable/writable stream where you do +// something with the data. Sometimes it's called a "filter", +// but that's not a great name for it, since that implies a thing where +// some bits pass through, and others are simply ignored. (That would +// be a valid example of a transform, of course.) +// +// While the output is causally related to the input, it's not a +// necessarily symmetric or synchronous transformation. For example, +// a zlib stream might take multiple plain-text writes(), and then +// emit a single compressed chunk some time in the future. +// +// Here's how this works: +// +// The Transform stream has all the aspects of the readable and writable +// stream classes. When you write(chunk), that calls _write(chunk,cb) +// internally, and returns false if there's a lot of pending writes +// buffered up. When you call read(), that calls _read(n) until +// there's enough pending readable data buffered up. +// +// In a transform stream, the written data is placed in a buffer. When +// _read(n) is called, it transforms the queued up data, calling the +// buffered _write cb's as it consumes chunks. If consuming a single +// written chunk would result in multiple output chunks, then the first +// outputted bit calls the readcb, and subsequent chunks just go into +// the read buffer, and will cause it to emit 'readable' if necessary. +// +// This way, back-pressure is actually determined by the reading side, +// since _read has to be called to start processing a new chunk. However, +// a pathological inflate type of transform can cause excessive buffering +// here. For example, imagine a stream where every byte of input is +// interpreted as an integer from 0-255, and then results in that many +// bytes of output. Writing the 4 bytes {ff,ff,ff,ff} would result in +// 1kb of data being output. In this case, you could write a very small +// amount of input, and end up with a very large amount of output. In +// such a pathological inflating mechanism, there'd be no way to tell +// the system to stop doing the transform. A single 4MB write could +// cause the system to run out of memory. +// +// However, even in such a pathological case, only a single written chunk +// would be consumed, and then the rest would wait (un-transformed) until +// the results of the previous transformed chunk were consumed. + +'use strict'; + +module.exports = Transform; - state.length += len; +var Duplex = require('./_stream_duplex'); - var ret = state.length < state.highWaterMark; - // we must ensure that previous needDrain will not be reset to false. - if (!ret) state.needDrain = true; +/**/ +var util = Object.create(require('core-util-is')); +util.inherits = require('inherits'); +/**/ - if (state.writing || state.corked) { - var last = state.lastBufferedRequest; - state.lastBufferedRequest = { - chunk: chunk, - encoding: encoding, - isBuf: isBuf, - callback: cb, - next: null - }; - if (last) { - last.next = state.lastBufferedRequest; - } else { - state.bufferedRequest = state.lastBufferedRequest; - } - state.bufferedRequestCount += 1; - } else { - doWrite(stream, state, false, len, chunk, encoding, cb); +util.inherits(Transform, Duplex); + +function afterTransform(er, data) { + var ts = this._transformState; + ts.transforming = false; + + var cb = ts.writecb; + + if (!cb) { + return this.emit('error', new Error('write callback called multiple times')); } - return ret; -} + ts.writechunk = null; + ts.writecb = null; -function doWrite(stream, state, writev, len, chunk, encoding, cb) { - state.writelen = len; - state.writecb = cb; - state.writing = true; - state.sync = true; - if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite); - state.sync = false; -} + if (data != null) // single equals check for both `null` and `undefined` + this.push(data); -function onwriteError(stream, state, sync, er, cb) { - --state.pendingcb; + cb(er); - if (sync) { - // defer the callback if we are being called synchronously - // to avoid piling up things on the stack - processNextTick(cb, er); - // this can emit finish, and it will always happen - // after error - processNextTick(finishMaybe, stream, state); - stream._writableState.errorEmitted = true; - stream.emit('error', er); - } else { - // the caller expect this to happen before if - // it is async - cb(er); - stream._writableState.errorEmitted = true; - stream.emit('error', er); - // this can emit finish, but finish must - // always follow error - finishMaybe(stream, state); + var rs = this._readableState; + rs.reading = false; + if (rs.needReadable || rs.length < rs.highWaterMark) { + this._read(rs.highWaterMark); } } -function onwriteStateUpdate(state) { - state.writing = false; - state.writecb = null; - state.length -= state.writelen; - state.writelen = 0; -} +function Transform(options) { + if (!(this instanceof Transform)) return new Transform(options); -function onwrite(stream, er) { - var state = stream._writableState; - var sync = state.sync; - var cb = state.writecb; + Duplex.call(this, options); - onwriteStateUpdate(state); + this._transformState = { + afterTransform: afterTransform.bind(this), + needTransform: false, + transforming: false, + writecb: null, + writechunk: null, + writeencoding: null + }; - if (er) onwriteError(stream, state, sync, er, cb);else { - // Check if we're actually ready to finish, but don't emit yet - var finished = needFinish(state); + // start out asking for a readable event once data is transformed. + this._readableState.needReadable = true; - if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) { - clearBuffer(stream, state); - } + // we have implemented the _read method, and done the other things + // that Readable wants before the first _read call, so unset the + // sync guard flag. + this._readableState.sync = false; - if (sync) { - /**/ - asyncWrite(afterWrite, stream, state, finished, cb); - /**/ - } else { - afterWrite(stream, state, finished, cb); - } + if (options) { + if (typeof options.transform === 'function') this._transform = options.transform; + + if (typeof options.flush === 'function') this._flush = options.flush; } -} -function afterWrite(stream, state, finished, cb) { - if (!finished) onwriteDrain(stream, state); - state.pendingcb--; - cb(); - finishMaybe(stream, state); + // When the writable side finishes, then flush out anything remaining. + this.on('prefinish', prefinish); } -// Must force callback to be called on nextTick, so that we don't -// emit 'drain' before the write() consumer gets the 'false' return -// value, and has a chance to attach a 'drain' listener. -function onwriteDrain(stream, state) { - if (state.length === 0 && state.needDrain) { - state.needDrain = false; - stream.emit('drain'); +function prefinish() { + var _this = this; + + if (typeof this._flush === 'function') { + this._flush(function (er, data) { + done(_this, er, data); + }); + } else { + done(this, null, null); } } -// if there's something in the buffer waiting, then process it -function clearBuffer(stream, state) { - state.bufferProcessing = true; - var entry = state.bufferedRequest; +Transform.prototype.push = function (chunk, encoding) { + this._transformState.needTransform = false; + return Duplex.prototype.push.call(this, chunk, encoding); +}; - if (stream._writev && entry && entry.next) { - // Fast case, write everything using _writev() - var l = state.bufferedRequestCount; - var buffer = new Array(l); - var holder = state.corkedRequestsFree; - holder.entry = entry; +// This is the part where you do stuff! +// override this function in implementation classes. +// 'chunk' is an input chunk. +// +// Call `push(newChunk)` to pass along transformed output +// to the readable side. You may call 'push' zero or more times. +// +// Call `cb(err)` when you are done with this chunk. If you pass +// an error, then that'll put the hurt on the whole operation. If you +// never call cb(), then you'll never get another chunk. +Transform.prototype._transform = function (chunk, encoding, cb) { + throw new Error('_transform() is not implemented'); +}; - var count = 0; - var allBuffers = true; - while (entry) { - buffer[count] = entry; - if (!entry.isBuf) allBuffers = false; - entry = entry.next; - count += 1; - } - buffer.allBuffers = allBuffers; +Transform.prototype._write = function (chunk, encoding, cb) { + var ts = this._transformState; + ts.writecb = cb; + ts.writechunk = chunk; + ts.writeencoding = encoding; + if (!ts.transforming) { + var rs = this._readableState; + if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark); + } +}; - doWrite(stream, state, true, state.length, buffer, '', holder.finish); +// Doesn't matter what the args are here. +// _transform does all the work. +// That we got here means that the readable side wants more data. +Transform.prototype._read = function (n) { + var ts = this._transformState; - // doWrite is almost always async, defer these to save a bit of time - // as the hot path ends with doWrite - state.pendingcb++; - state.lastBufferedRequest = null; - if (holder.next) { - state.corkedRequestsFree = holder.next; - holder.next = null; - } else { - state.corkedRequestsFree = new CorkedRequest(state); - } + if (ts.writechunk !== null && ts.writecb && !ts.transforming) { + ts.transforming = true; + this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform); } else { - // Slow case, write chunks one-by-one - while (entry) { - var chunk = entry.chunk; - var encoding = entry.encoding; - var cb = entry.callback; - var len = state.objectMode ? 1 : chunk.length; + // mark that we need a transform, so that any data that comes in + // will get processed, now that we've asked for it. + ts.needTransform = true; + } +}; - doWrite(stream, state, false, len, chunk, encoding, cb); - entry = entry.next; - // if we didn't call the onwrite immediately, then - // it means that we need to wait until it does. - // also, that means that the chunk and cb are currently - // being processed, so move the buffer counter past them. - if (state.writing) { - break; - } - } +Transform.prototype._destroy = function (err, cb) { + var _this2 = this; - if (entry === null) state.lastBufferedRequest = null; - } + Duplex.prototype._destroy.call(this, err, function (err2) { + cb(err2); + _this2.emit('close'); + }); +}; + +function done(stream, er, data) { + if (er) return stream.emit('error', er); + + if (data != null) // single equals check for both `null` and `undefined` + stream.push(data); + + // if there's nothing in the write buffer, then that means + // that nothing more will ever be provided + if (stream._writableState.length) throw new Error('Calling transform done when ws.length != 0'); + + if (stream._transformState.transforming) throw new Error('Calling transform done when still transforming'); + + return stream.push(null); +} +},{"./_stream_duplex":24,"core-util-is":15,"inherits":18}],28:[function(require,module,exports){ +(function (process,global,setImmediate){(function (){ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. + +// A bit simpler than readable streams. +// Implement an async ._write(chunk, encoding, cb), and it'll handle all +// the drain event emission and buffering. + +'use strict'; + +/**/ + +var pna = require('process-nextick-args'); +/**/ - state.bufferedRequestCount = 0; - state.bufferedRequest = entry; - state.bufferProcessing = false; +module.exports = Writable; + +/* */ +function WriteReq(chunk, encoding, cb) { + this.chunk = chunk; + this.encoding = encoding; + this.callback = cb; + this.next = null; } -Writable.prototype._write = function (chunk, encoding, cb) { - cb(new Error('_write() is not implemented')); -}; +// It seems a linked list but it is not +// there will be only 2 of these for each stream +function CorkedRequest(state) { + var _this = this; -Writable.prototype._writev = null; + this.next = null; + this.entry = null; + this.finish = function () { + onCorkedFinish(_this, state); + }; +} +/* */ -Writable.prototype.end = function (chunk, encoding, cb) { - var state = this._writableState; +/**/ +var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : pna.nextTick; +/**/ - if (typeof chunk === 'function') { - cb = chunk; - chunk = null; - encoding = null; - } else if (typeof encoding === 'function') { - cb = encoding; - encoding = null; - } +/**/ +var Duplex; +/**/ - if (chunk !== null && chunk !== undefined) this.write(chunk, encoding); +Writable.WritableState = WritableState; - // .end() fully uncorks - if (state.corked) { - state.corked = 1; - this.uncork(); - } +/**/ +var util = Object.create(require('core-util-is')); +util.inherits = require('inherits'); +/**/ - // ignore unnecessary end() calls. - if (!state.ending && !state.finished) endWritable(this, state, cb); +/**/ +var internalUtil = { + deprecate: require('util-deprecate') }; +/**/ -function needFinish(state) { - return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing; -} -function callFinal(stream, state) { - stream._final(function (err) { - state.pendingcb--; - if (err) { - stream.emit('error', err); - } - state.prefinished = true; - stream.emit('prefinish'); - finishMaybe(stream, state); - }); +/**/ +var Stream = require('./internal/streams/stream'); +/**/ + +/**/ + +var Buffer = require('safe-buffer').Buffer; +var OurUint8Array = global.Uint8Array || function () {}; +function _uint8ArrayToBuffer(chunk) { + return Buffer.from(chunk); } -function prefinish(stream, state) { - if (!state.prefinished && !state.finalCalled) { - if (typeof stream._final === 'function') { - state.pendingcb++; - state.finalCalled = true; - processNextTick(callFinal, stream, state); - } else { - state.prefinished = true; - stream.emit('prefinish'); - } - } +function _isUint8Array(obj) { + return Buffer.isBuffer(obj) || obj instanceof OurUint8Array; } -function finishMaybe(stream, state) { - var need = needFinish(state); - if (need) { - prefinish(stream, state); - if (state.pendingcb === 0) { - state.finished = true; - stream.emit('finish'); - } - } - return need; -} +/**/ -function endWritable(stream, state, cb) { - state.ending = true; - finishMaybe(stream, state); - if (cb) { - if (state.finished) processNextTick(cb);else stream.once('finish', cb); - } - state.ended = true; - stream.writable = false; -} +var destroyImpl = require('./internal/streams/destroy'); -function onCorkedFinish(corkReq, state, err) { - var entry = corkReq.entry; - corkReq.entry = null; - while (entry) { - var cb = entry.callback; - state.pendingcb--; - cb(err); - entry = entry.next; - } - if (state.corkedRequestsFree) { - state.corkedRequestsFree.next = corkReq; - } else { - state.corkedRequestsFree = corkReq; - } -} +util.inherits(Writable, Stream); -Object.defineProperty(Writable.prototype, 'destroyed', { - get: function () { - if (this._writableState === undefined) { - return false; - } - return this._writableState.destroyed; - }, - set: function (value) { - // we ignore the value if the stream - // has not been initialized yet - if (!this._writableState) { - return; - } +function nop() {} - // backward compatibility, the user is explicitly - // managing destroyed - this._writableState.destroyed = value; - } -}); +function WritableState(options, stream) { + Duplex = Duplex || require('./_stream_duplex'); -Writable.prototype.destroy = destroyImpl.destroy; -Writable.prototype._undestroy = destroyImpl.undestroy; -Writable.prototype._destroy = function (err, cb) { - this.end(); - cb(err); -}; -}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"./_stream_duplex":19,"./internal/streams/destroy":25,"./internal/streams/stream":26,"_process":17,"core-util-is":10,"inherits":13,"process-nextick-args":16,"safe-buffer":28,"util-deprecate":30}],24:[function(require,module,exports){ -'use strict'; + options = options || {}; -/**/ + // Duplex streams are both readable and writable, but share + // the same options object. + // However, some cases require setting options to different + // values for the readable and the writable sides of the duplex stream. + // These options can be provided separately as readableXXX and writableXXX. + var isDuplex = stream instanceof Duplex; -function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } + // object stream flag to indicate whether or not this stream + // contains buffers or objects. + this.objectMode = !!options.objectMode; -var Buffer = require('safe-buffer').Buffer; -/**/ + if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode; -function copyBuffer(src, target, offset) { - src.copy(target, offset); -} + // the point at which write() starts returning false + // Note: 0 is a valid value, means that we always return false if + // the entire buffer is not flushed immediately on write() + var hwm = options.highWaterMark; + var writableHwm = options.writableHighWaterMark; + var defaultHwm = this.objectMode ? 16 : 16 * 1024; -module.exports = function () { - function BufferList() { - _classCallCheck(this, BufferList); + if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (writableHwm || writableHwm === 0)) this.highWaterMark = writableHwm;else this.highWaterMark = defaultHwm; - this.head = null; - this.tail = null; - this.length = 0; - } + // cast to ints. + this.highWaterMark = Math.floor(this.highWaterMark); - BufferList.prototype.push = function push(v) { - var entry = { data: v, next: null }; - if (this.length > 0) this.tail.next = entry;else this.head = entry; - this.tail = entry; - ++this.length; - }; + // if _final has been called + this.finalCalled = false; - BufferList.prototype.unshift = function unshift(v) { - var entry = { data: v, next: this.head }; - if (this.length === 0) this.tail = entry; - this.head = entry; - ++this.length; - }; + // drain event flag. + this.needDrain = false; + // at the start of calling end() + this.ending = false; + // when end() has been called, and returned + this.ended = false; + // when 'finish' is emitted + this.finished = false; - BufferList.prototype.shift = function shift() { - if (this.length === 0) return; - var ret = this.head.data; - if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next; - --this.length; - return ret; - }; + // has it been destroyed + this.destroyed = false; - BufferList.prototype.clear = function clear() { - this.head = this.tail = null; - this.length = 0; - }; + // should we decode strings into buffers before passing to _write? + // this is here so that some node-core streams can optimize string + // handling at a lower level. + var noDecode = options.decodeStrings === false; + this.decodeStrings = !noDecode; - BufferList.prototype.join = function join(s) { - if (this.length === 0) return ''; - var p = this.head; - var ret = '' + p.data; - while (p = p.next) { - ret += s + p.data; - }return ret; + // Crypto is kind of old and crusty. Historically, its default string + // encoding is 'binary' so we have to make this configurable. + // Everything else in the universe uses 'utf8', though. + this.defaultEncoding = options.defaultEncoding || 'utf8'; + + // not an actual buffer we keep track of, but a measurement + // of how much we're waiting to get pushed to some underlying + // socket or file. + this.length = 0; + + // a flag to see when we're in the middle of a write. + this.writing = false; + + // when true all writes will be buffered until .uncork() call + this.corked = 0; + + // a flag to be able to tell if the onwrite cb is called immediately, + // or on a later tick. We set this to true at first, because any + // actions that shouldn't happen until "later" should generally also + // not happen before the first write call. + this.sync = true; + + // a flag to know if we're processing previously buffered items, which + // may call the _write() callback in the same tick, so that we don't + // end up in an overlapped onwrite situation. + this.bufferProcessing = false; + + // the callback that's passed to _write(chunk,cb) + this.onwrite = function (er) { + onwrite(stream, er); }; - BufferList.prototype.concat = function concat(n) { - if (this.length === 0) return Buffer.alloc(0); - if (this.length === 1) return this.head.data; - var ret = Buffer.allocUnsafe(n >>> 0); - var p = this.head; - var i = 0; - while (p) { - copyBuffer(p.data, ret, i); - i += p.data.length; - p = p.next; - } - return ret; - }; + // the callback that the user supplies to write(chunk,encoding,cb) + this.writecb = null; - return BufferList; -}(); -},{"safe-buffer":28}],25:[function(require,module,exports){ -'use strict'; + // the amount that is being written when _write is called. + this.writelen = 0; -/**/ + this.bufferedRequest = null; + this.lastBufferedRequest = null; -var processNextTick = require('process-nextick-args'); -/**/ + // number of pending user-supplied write callbacks + // this must be 0 before 'finish' can be emitted + this.pendingcb = 0; -// undocumented cb() API, needed for core, not for public API -function destroy(err, cb) { - var _this = this; + // emit prefinish if the only thing we're waiting for is _write cbs + // This is relevant for synchronous Transform streams + this.prefinished = false; - var readableDestroyed = this._readableState && this._readableState.destroyed; - var writableDestroyed = this._writableState && this._writableState.destroyed; + // True if the error was already emitted and should not be thrown again + this.errorEmitted = false; - if (readableDestroyed || writableDestroyed) { - if (cb) { - cb(err); - } else if (err && (!this._writableState || !this._writableState.errorEmitted)) { - processNextTick(emitErrorNT, this, err); - } - return; - } + // count buffered requests + this.bufferedRequestCount = 0; - // we set destroyed to true before firing error callbacks in order - // to make it re-entrance safe in case destroy() is called within callbacks + // allocate the first CorkedRequest, there is always + // one allocated and free to use, and we maintain at most two + this.corkedRequestsFree = new CorkedRequest(this); +} - if (this._readableState) { - this._readableState.destroyed = true; +WritableState.prototype.getBuffer = function getBuffer() { + var current = this.bufferedRequest; + var out = []; + while (current) { + out.push(current); + current = current.next; } + return out; +}; - // if this is a duplex stream mark the writable part as destroyed as well - if (this._writableState) { - this._writableState.destroyed = true; - } +(function () { + try { + Object.defineProperty(WritableState.prototype, 'buffer', { + get: internalUtil.deprecate(function () { + return this.getBuffer(); + }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003') + }); + } catch (_) {} +})(); - this._destroy(err || null, function (err) { - if (!cb && err) { - processNextTick(emitErrorNT, _this, err); - if (_this._writableState) { - _this._writableState.errorEmitted = true; - } - } else if (cb) { - cb(err); +// Test _writableState for inheritance to account for Duplex streams, +// whose prototype chain only points to Readable. +var realHasInstance; +if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') { + realHasInstance = Function.prototype[Symbol.hasInstance]; + Object.defineProperty(Writable, Symbol.hasInstance, { + value: function (object) { + if (realHasInstance.call(this, object)) return true; + if (this !== Writable) return false; + + return object && object._writableState instanceof WritableState; } }); +} else { + realHasInstance = function (object) { + return object instanceof this; + }; } -function undestroy() { - if (this._readableState) { - this._readableState.destroyed = false; - this._readableState.reading = false; - this._readableState.ended = false; - this._readableState.endEmitted = false; - } - - if (this._writableState) { - this._writableState.destroyed = false; - this._writableState.ended = false; - this._writableState.ending = false; - this._writableState.finished = false; - this._writableState.errorEmitted = false; - } -} +function Writable(options) { + Duplex = Duplex || require('./_stream_duplex'); -function emitErrorNT(self, err) { - self.emit('error', err); -} + // Writable ctor is applied to Duplexes, too. + // `realHasInstance` is necessary because using plain `instanceof` + // would return false, as no `_writableState` property is attached. -module.exports = { - destroy: destroy, - undestroy: undestroy -}; -},{"process-nextick-args":16}],26:[function(require,module,exports){ -module.exports = require('events').EventEmitter; + // Trying to use the custom `instanceof` for Writable here will also break the + // Node.js LazyTransform implementation, which has a non-trivial getter for + // `_writableState` that would lead to infinite recursion. + if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) { + return new Writable(options); + } -},{"events":11}],27:[function(require,module,exports){ -exports = module.exports = require('./lib/_stream_readable.js'); -exports.Stream = exports; -exports.Readable = exports; -exports.Writable = require('./lib/_stream_writable.js'); -exports.Duplex = require('./lib/_stream_duplex.js'); -exports.Transform = require('./lib/_stream_transform.js'); -exports.PassThrough = require('./lib/_stream_passthrough.js'); + this._writableState = new WritableState(options, this); -},{"./lib/_stream_duplex.js":19,"./lib/_stream_passthrough.js":20,"./lib/_stream_readable.js":21,"./lib/_stream_transform.js":22,"./lib/_stream_writable.js":23}],28:[function(require,module,exports){ -/* eslint-disable node/no-deprecated-api */ -var buffer = require('buffer') -var Buffer = buffer.Buffer + // legacy. + this.writable = true; -// alternative to using Object.keys for old browsers -function copyProps (src, dst) { - for (var key in src) { - dst[key] = src[key] - } -} -if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) { - module.exports = buffer -} else { - // Copy properties from require('buffer') - copyProps(buffer, exports) - exports.Buffer = SafeBuffer -} + if (options) { + if (typeof options.write === 'function') this._write = options.write; -function SafeBuffer (arg, encodingOrOffset, length) { - return Buffer(arg, encodingOrOffset, length) -} + if (typeof options.writev === 'function') this._writev = options.writev; -// Copy static methods from Buffer -copyProps(Buffer, SafeBuffer) + if (typeof options.destroy === 'function') this._destroy = options.destroy; -SafeBuffer.from = function (arg, encodingOrOffset, length) { - if (typeof arg === 'number') { - throw new TypeError('Argument must not be a number') + if (typeof options.final === 'function') this._final = options.final; } - return Buffer(arg, encodingOrOffset, length) -} -SafeBuffer.alloc = function (size, fill, encoding) { - if (typeof size !== 'number') { - throw new TypeError('Argument must be a number') - } - var buf = Buffer(size) - if (fill !== undefined) { - if (typeof encoding === 'string') { - buf.fill(fill, encoding) - } else { - buf.fill(fill) - } - } else { - buf.fill(0) - } - return buf + Stream.call(this); } -SafeBuffer.allocUnsafe = function (size) { - if (typeof size !== 'number') { - throw new TypeError('Argument must be a number') - } - return Buffer(size) -} +// Otherwise people can pipe Writable streams, which is just wrong. +Writable.prototype.pipe = function () { + this.emit('error', new Error('Cannot pipe, not readable')); +}; -SafeBuffer.allocUnsafeSlow = function (size) { - if (typeof size !== 'number') { - throw new TypeError('Argument must be a number') - } - return buffer.SlowBuffer(size) +function writeAfterEnd(stream, cb) { + var er = new Error('write after end'); + // TODO: defer error events consistently everywhere, not just the cb + stream.emit('error', er); + pna.nextTick(cb, er); } -},{"buffer":9}],29:[function(require,module,exports){ -'use strict'; - -var Buffer = require('safe-buffer').Buffer; +// Checks that a user-supplied chunk is valid, especially for the particular +// mode the stream is in. Currently this means that `null` is never accepted +// and undefined/non-string values are only allowed in object mode. +function validChunk(stream, state, chunk, cb) { + var valid = true; + var er = false; -var isEncoding = Buffer.isEncoding || function (encoding) { - encoding = '' + encoding; - switch (encoding && encoding.toLowerCase()) { - case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw': - return true; - default: - return false; + if (chunk === null) { + er = new TypeError('May not write null values to stream'); + } else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) { + er = new TypeError('Invalid non-string/buffer chunk'); } -}; - -function _normalizeEncoding(enc) { - if (!enc) return 'utf8'; - var retried; - while (true) { - switch (enc) { - case 'utf8': - case 'utf-8': - return 'utf8'; - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return 'utf16le'; - case 'latin1': - case 'binary': - return 'latin1'; - case 'base64': - case 'ascii': - case 'hex': - return enc; - default: - if (retried) return; // undefined - enc = ('' + enc).toLowerCase(); - retried = true; - } + if (er) { + stream.emit('error', er); + pna.nextTick(cb, er); + valid = false; } -}; - -// Do not cache `Buffer.isEncoding` when checking encoding names as some -// modules monkey-patch it to support additional encodings -function normalizeEncoding(enc) { - var nenc = _normalizeEncoding(enc); - if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc); - return nenc || enc; + return valid; } -// StringDecoder provides an interface for efficiently splitting a series of -// buffers into a series of JS strings without breaking apart multi-byte -// characters. -exports.StringDecoder = StringDecoder; -function StringDecoder(encoding) { - this.encoding = normalizeEncoding(encoding); - var nb; - switch (this.encoding) { - case 'utf16le': - this.text = utf16Text; - this.end = utf16End; - nb = 4; - break; - case 'utf8': - this.fillLast = utf8FillLast; - nb = 4; - break; - case 'base64': - this.text = base64Text; - this.end = base64End; - nb = 3; - break; - default: - this.write = simpleWrite; - this.end = simpleEnd; - return; +Writable.prototype.write = function (chunk, encoding, cb) { + var state = this._writableState; + var ret = false; + var isBuf = !state.objectMode && _isUint8Array(chunk); + + if (isBuf && !Buffer.isBuffer(chunk)) { + chunk = _uint8ArrayToBuffer(chunk); } - this.lastNeed = 0; - this.lastTotal = 0; - this.lastChar = Buffer.allocUnsafe(nb); -} -StringDecoder.prototype.write = function (buf) { - if (buf.length === 0) return ''; - var r; - var i; - if (this.lastNeed) { - r = this.fillLast(buf); - if (r === undefined) return ''; - i = this.lastNeed; - this.lastNeed = 0; - } else { - i = 0; + if (typeof encoding === 'function') { + cb = encoding; + encoding = null; } - if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i); - return r || ''; -}; -StringDecoder.prototype.end = utf8End; + if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding; -// Returns only complete characters in a Buffer -StringDecoder.prototype.text = utf8Text; + if (typeof cb !== 'function') cb = nop; -// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer -StringDecoder.prototype.fillLast = function (buf) { - if (this.lastNeed <= buf.length) { - buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed); - return this.lastChar.toString(this.encoding, 0, this.lastTotal); + if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) { + state.pendingcb++; + ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb); } - buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length); - this.lastNeed -= buf.length; + + return ret; }; -// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a -// continuation byte. -function utf8CheckByte(byte) { - if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4; - return -1; -} +Writable.prototype.cork = function () { + var state = this._writableState; -// Checks at most 3 bytes at the end of a Buffer in order to detect an -// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4) -// needed to complete the UTF-8 character (if applicable) are returned. -function utf8CheckIncomplete(self, buf, i) { - var j = buf.length - 1; - if (j < i) return 0; - var nb = utf8CheckByte(buf[j]); - if (nb >= 0) { - if (nb > 0) self.lastNeed = nb - 1; - return nb; - } - if (--j < i) return 0; - nb = utf8CheckByte(buf[j]); - if (nb >= 0) { - if (nb > 0) self.lastNeed = nb - 2; - return nb; + state.corked++; +}; + +Writable.prototype.uncork = function () { + var state = this._writableState; + + if (state.corked) { + state.corked--; + + if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state); } - if (--j < i) return 0; - nb = utf8CheckByte(buf[j]); - if (nb >= 0) { - if (nb > 0) { - if (nb === 2) nb = 0;else self.lastNeed = nb - 3; - } - return nb; +}; + +Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) { + // node::ParseEncoding() requires lower case. + if (typeof encoding === 'string') encoding = encoding.toLowerCase(); + if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding); + this._writableState.defaultEncoding = encoding; + return this; +}; + +function decodeChunk(state, chunk, encoding) { + if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') { + chunk = Buffer.from(chunk, encoding); } - return 0; + return chunk; } -// Validates as many continuation bytes for a multi-byte UTF-8 character as -// needed or are available. If we see a non-continuation byte where we expect -// one, we "replace" the validated continuation bytes we've seen so far with -// UTF-8 replacement characters ('\ufffd'), to match v8's UTF-8 decoding -// behavior. The continuation byte check is included three times in the case -// where all of the continuation bytes for a character exist in the same buffer. -// It is also done this way as a slight performance increase instead of using a -// loop. -function utf8CheckExtraBytes(self, buf, p) { - if ((buf[0] & 0xC0) !== 0x80) { - self.lastNeed = 0; - return '\ufffd'.repeat(p); +Object.defineProperty(Writable.prototype, 'writableHighWaterMark', { + // making it explicit this property is not enumerable + // because otherwise some prototype manipulation in + // userland will fail + enumerable: false, + get: function () { + return this._writableState.highWaterMark; } - if (self.lastNeed > 1 && buf.length > 1) { - if ((buf[1] & 0xC0) !== 0x80) { - self.lastNeed = 1; - return '\ufffd'.repeat(p + 1); - } - if (self.lastNeed > 2 && buf.length > 2) { - if ((buf[2] & 0xC0) !== 0x80) { - self.lastNeed = 2; - return '\ufffd'.repeat(p + 2); - } +}); + +// if we're already writing something, then just put this +// in the queue, and wait our turn. Otherwise, call _write +// If we return false, then we need a drain event, so set that flag. +function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) { + if (!isBuf) { + var newChunk = decodeChunk(state, chunk, encoding); + if (chunk !== newChunk) { + isBuf = true; + encoding = 'buffer'; + chunk = newChunk; } } -} + var len = state.objectMode ? 1 : chunk.length; -// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer. -function utf8FillLast(buf) { - var p = this.lastTotal - this.lastNeed; - var r = utf8CheckExtraBytes(this, buf, p); - if (r !== undefined) return r; - if (this.lastNeed <= buf.length) { - buf.copy(this.lastChar, p, 0, this.lastNeed); - return this.lastChar.toString(this.encoding, 0, this.lastTotal); + state.length += len; + + var ret = state.length < state.highWaterMark; + // we must ensure that previous needDrain will not be reset to false. + if (!ret) state.needDrain = true; + + if (state.writing || state.corked) { + var last = state.lastBufferedRequest; + state.lastBufferedRequest = { + chunk: chunk, + encoding: encoding, + isBuf: isBuf, + callback: cb, + next: null + }; + if (last) { + last.next = state.lastBufferedRequest; + } else { + state.bufferedRequest = state.lastBufferedRequest; + } + state.bufferedRequestCount += 1; + } else { + doWrite(stream, state, false, len, chunk, encoding, cb); } - buf.copy(this.lastChar, p, 0, buf.length); - this.lastNeed -= buf.length; -} -// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a -// partial character, the character's bytes are buffered until the required -// number of bytes are available. -function utf8Text(buf, i) { - var total = utf8CheckIncomplete(this, buf, i); - if (!this.lastNeed) return buf.toString('utf8', i); - this.lastTotal = total; - var end = buf.length - (total - this.lastNeed); - buf.copy(this.lastChar, 0, end); - return buf.toString('utf8', i, end); + return ret; } -// For UTF-8, a replacement character for each buffered byte of a (partial) -// character needs to be added to the output. -function utf8End(buf) { - var r = buf && buf.length ? this.write(buf) : ''; - if (this.lastNeed) return r + '\ufffd'.repeat(this.lastTotal - this.lastNeed); - return r; +function doWrite(stream, state, writev, len, chunk, encoding, cb) { + state.writelen = len; + state.writecb = cb; + state.writing = true; + state.sync = true; + if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite); + state.sync = false; } -// UTF-16LE typically needs two bytes per character, but even if we have an even -// number of bytes available, we need to check if we end on a leading/high -// surrogate. In that case, we need to wait for the next two bytes in order to -// decode the last character properly. -function utf16Text(buf, i) { - if ((buf.length - i) % 2 === 0) { - var r = buf.toString('utf16le', i); - if (r) { - var c = r.charCodeAt(r.length - 1); - if (c >= 0xD800 && c <= 0xDBFF) { - this.lastNeed = 2; - this.lastTotal = 4; - this.lastChar[0] = buf[buf.length - 2]; - this.lastChar[1] = buf[buf.length - 1]; - return r.slice(0, -1); - } - } - return r; +function onwriteError(stream, state, sync, er, cb) { + --state.pendingcb; + + if (sync) { + // defer the callback if we are being called synchronously + // to avoid piling up things on the stack + pna.nextTick(cb, er); + // this can emit finish, and it will always happen + // after error + pna.nextTick(finishMaybe, stream, state); + stream._writableState.errorEmitted = true; + stream.emit('error', er); + } else { + // the caller expect this to happen before if + // it is async + cb(er); + stream._writableState.errorEmitted = true; + stream.emit('error', er); + // this can emit finish, but finish must + // always follow error + finishMaybe(stream, state); } - this.lastNeed = 1; - this.lastTotal = 2; - this.lastChar[0] = buf[buf.length - 1]; - return buf.toString('utf16le', i, buf.length - 1); } -// For UTF-16LE we do not explicitly append special replacement characters if we -// end on a partial character, we simply let v8 handle that. -function utf16End(buf) { - var r = buf && buf.length ? this.write(buf) : ''; - if (this.lastNeed) { - var end = this.lastTotal - this.lastNeed; - return r + this.lastChar.toString('utf16le', 0, end); - } - return r; +function onwriteStateUpdate(state) { + state.writing = false; + state.writecb = null; + state.length -= state.writelen; + state.writelen = 0; } -function base64Text(buf, i) { - var n = (buf.length - i) % 3; - if (n === 0) return buf.toString('base64', i); - this.lastNeed = 3 - n; - this.lastTotal = 3; - if (n === 1) { - this.lastChar[0] = buf[buf.length - 1]; - } else { - this.lastChar[0] = buf[buf.length - 2]; - this.lastChar[1] = buf[buf.length - 1]; +function onwrite(stream, er) { + var state = stream._writableState; + var sync = state.sync; + var cb = state.writecb; + + onwriteStateUpdate(state); + + if (er) onwriteError(stream, state, sync, er, cb);else { + // Check if we're actually ready to finish, but don't emit yet + var finished = needFinish(state); + + if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) { + clearBuffer(stream, state); + } + + if (sync) { + /**/ + asyncWrite(afterWrite, stream, state, finished, cb); + /**/ + } else { + afterWrite(stream, state, finished, cb); + } } - return buf.toString('base64', i, buf.length - n); } -function base64End(buf) { - var r = buf && buf.length ? this.write(buf) : ''; - if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed); - return r; +function afterWrite(stream, state, finished, cb) { + if (!finished) onwriteDrain(stream, state); + state.pendingcb--; + cb(); + finishMaybe(stream, state); } -// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex) -function simpleWrite(buf) { - return buf.toString(this.encoding); +// Must force callback to be called on nextTick, so that we don't +// emit 'drain' before the write() consumer gets the 'false' return +// value, and has a chance to attach a 'drain' listener. +function onwriteDrain(stream, state) { + if (state.length === 0 && state.needDrain) { + state.needDrain = false; + stream.emit('drain'); + } } -function simpleEnd(buf) { - return buf && buf.length ? this.write(buf) : ''; -} -},{"safe-buffer":28}],30:[function(require,module,exports){ -(function (global){ +// if there's something in the buffer waiting, then process it +function clearBuffer(stream, state) { + state.bufferProcessing = true; + var entry = state.bufferedRequest; -/** - * Module exports. - */ + if (stream._writev && entry && entry.next) { + // Fast case, write everything using _writev() + var l = state.bufferedRequestCount; + var buffer = new Array(l); + var holder = state.corkedRequestsFree; + holder.entry = entry; -module.exports = deprecate; + var count = 0; + var allBuffers = true; + while (entry) { + buffer[count] = entry; + if (!entry.isBuf) allBuffers = false; + entry = entry.next; + count += 1; + } + buffer.allBuffers = allBuffers; -/** - * Mark that a method should not be used. - * Returns a modified function which warns once by default. - * - * If `localStorage.noDeprecation = true` is set, then it is a no-op. - * - * If `localStorage.throwDeprecation = true` is set, then deprecated functions - * will throw an Error when invoked. - * - * If `localStorage.traceDeprecation = true` is set, then deprecated functions - * will invoke `console.trace()` instead of `console.error()`. - * - * @param {Function} fn - the function to deprecate - * @param {String} msg - the string to print to the console when `fn` is invoked - * @returns {Function} a new "deprecated" version of `fn` - * @api public - */ + doWrite(stream, state, true, state.length, buffer, '', holder.finish); -function deprecate (fn, msg) { - if (config('noDeprecation')) { - return fn; - } + // doWrite is almost always async, defer these to save a bit of time + // as the hot path ends with doWrite + state.pendingcb++; + state.lastBufferedRequest = null; + if (holder.next) { + state.corkedRequestsFree = holder.next; + holder.next = null; + } else { + state.corkedRequestsFree = new CorkedRequest(state); + } + state.bufferedRequestCount = 0; + } else { + // Slow case, write chunks one-by-one + while (entry) { + var chunk = entry.chunk; + var encoding = entry.encoding; + var cb = entry.callback; + var len = state.objectMode ? 1 : chunk.length; - var warned = false; - function deprecated() { - if (!warned) { - if (config('throwDeprecation')) { - throw new Error(msg); - } else if (config('traceDeprecation')) { - console.trace(msg); - } else { - console.warn(msg); + doWrite(stream, state, false, len, chunk, encoding, cb); + entry = entry.next; + state.bufferedRequestCount--; + // if we didn't call the onwrite immediately, then + // it means that we need to wait until it does. + // also, that means that the chunk and cb are currently + // being processed, so move the buffer counter past them. + if (state.writing) { + break; } - warned = true; } - return fn.apply(this, arguments); + + if (entry === null) state.lastBufferedRequest = null; } - return deprecated; + state.bufferedRequest = entry; + state.bufferProcessing = false; } -/** - * Checks `localStorage` for boolean values for the given `name`. - * - * @param {String} name - * @returns {Boolean} - * @api private - */ +Writable.prototype._write = function (chunk, encoding, cb) { + cb(new Error('_write() is not implemented')); +}; -function config (name) { - // accessing global.localStorage can trigger a DOMException in sandboxed iframes - try { - if (!global.localStorage) return false; - } catch (_) { - return false; +Writable.prototype._writev = null; + +Writable.prototype.end = function (chunk, encoding, cb) { + var state = this._writableState; + + if (typeof chunk === 'function') { + cb = chunk; + chunk = null; + encoding = null; + } else if (typeof encoding === 'function') { + cb = encoding; + encoding = null; } - var val = global.localStorage[name]; - if (null == val) return false; - return String(val).toLowerCase() === 'true'; -} -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{}],31:[function(require,module,exports){ -arguments[4][13][0].apply(exports,arguments) -},{"dup":13}],32:[function(require,module,exports){ -module.exports = function isBuffer(arg) { - return arg && typeof arg === 'object' - && typeof arg.copy === 'function' - && typeof arg.fill === 'function' - && typeof arg.readUInt8 === 'function'; -} -},{}],33:[function(require,module,exports){ -(function (process,global){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. + if (chunk !== null && chunk !== undefined) this.write(chunk, encoding); -var formatRegExp = /%[sdj%]/g; -exports.format = function(f) { - if (!isString(f)) { - var objects = []; - for (var i = 0; i < arguments.length; i++) { - objects.push(inspect(arguments[i])); - } - return objects.join(' '); + // .end() fully uncorks + if (state.corked) { + state.corked = 1; + this.uncork(); } - var i = 1; - var args = arguments; - var len = args.length; - var str = String(f).replace(formatRegExp, function(x) { - if (x === '%%') return '%'; - if (i >= len) return x; - switch (x) { - case '%s': return String(args[i++]); - case '%d': return Number(args[i++]); - case '%j': - try { - return JSON.stringify(args[i++]); - } catch (_) { - return '[Circular]'; - } - default: - return x; + // ignore unnecessary end() calls. + if (!state.ending && !state.finished) endWritable(this, state, cb); +}; + +function needFinish(state) { + return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing; +} +function callFinal(stream, state) { + stream._final(function (err) { + state.pendingcb--; + if (err) { + stream.emit('error', err); } + state.prefinished = true; + stream.emit('prefinish'); + finishMaybe(stream, state); }); - for (var x = args[i]; i < len; x = args[++i]) { - if (isNull(x) || !isObject(x)) { - str += ' ' + x; +} +function prefinish(stream, state) { + if (!state.prefinished && !state.finalCalled) { + if (typeof stream._final === 'function') { + state.pendingcb++; + state.finalCalled = true; + pna.nextTick(callFinal, stream, state); } else { - str += ' ' + inspect(x); + state.prefinished = true; + stream.emit('prefinish'); } } - return str; -}; +} +function finishMaybe(stream, state) { + var need = needFinish(state); + if (need) { + prefinish(stream, state); + if (state.pendingcb === 0) { + state.finished = true; + stream.emit('finish'); + } + } + return need; +} -// Mark that a method should not be used. -// Returns a modified function which warns once by default. -// If --no-deprecation is set, then it is a no-op. -exports.deprecate = function(fn, msg) { - // Allow for deprecating things in the process of starting up. - if (isUndefined(global.process)) { - return function() { - return exports.deprecate(fn, msg).apply(this, arguments); - }; +function endWritable(stream, state, cb) { + state.ending = true; + finishMaybe(stream, state); + if (cb) { + if (state.finished) pna.nextTick(cb);else stream.once('finish', cb); } + state.ended = true; + stream.writable = false; +} - if (process.noDeprecation === true) { - return fn; +function onCorkedFinish(corkReq, state, err) { + var entry = corkReq.entry; + corkReq.entry = null; + while (entry) { + var cb = entry.callback; + state.pendingcb--; + cb(err); + entry = entry.next; + } + if (state.corkedRequestsFree) { + state.corkedRequestsFree.next = corkReq; + } else { + state.corkedRequestsFree = corkReq; } +} - var warned = false; - function deprecated() { - if (!warned) { - if (process.throwDeprecation) { - throw new Error(msg); - } else if (process.traceDeprecation) { - console.trace(msg); - } else { - console.error(msg); - } - warned = true; +Object.defineProperty(Writable.prototype, 'destroyed', { + get: function () { + if (this._writableState === undefined) { + return false; } - return fn.apply(this, arguments); + return this._writableState.destroyed; + }, + set: function (value) { + // we ignore the value if the stream + // has not been initialized yet + if (!this._writableState) { + return; + } + + // backward compatibility, the user is explicitly + // managing destroyed + this._writableState.destroyed = value; } +}); - return deprecated; +Writable.prototype.destroy = destroyImpl.destroy; +Writable.prototype._undestroy = destroyImpl.undestroy; +Writable.prototype._destroy = function (err, cb) { + this.end(); + cb(err); }; +}).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("timers").setImmediate) +},{"./_stream_duplex":24,"./internal/streams/destroy":30,"./internal/streams/stream":31,"_process":23,"core-util-is":15,"inherits":18,"process-nextick-args":22,"safe-buffer":32,"timers":36,"util-deprecate":37}],29:[function(require,module,exports){ +'use strict'; +function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } -var debugs = {}; -var debugEnviron; -exports.debuglog = function(set) { - if (isUndefined(debugEnviron)) - debugEnviron = process.env.NODE_DEBUG || ''; - set = set.toUpperCase(); - if (!debugs[set]) { - if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) { - var pid = process.pid; - debugs[set] = function() { - var msg = exports.format.apply(exports, arguments); - console.error('%s %d: %s', set, pid, msg); - }; - } else { - debugs[set] = function() {}; - } +var Buffer = require('safe-buffer').Buffer; +var util = require('util'); + +function copyBuffer(src, target, offset) { + src.copy(target, offset); +} + +module.exports = function () { + function BufferList() { + _classCallCheck(this, BufferList); + + this.head = null; + this.tail = null; + this.length = 0; } - return debugs[set]; -}; + BufferList.prototype.push = function push(v) { + var entry = { data: v, next: null }; + if (this.length > 0) this.tail.next = entry;else this.head = entry; + this.tail = entry; + ++this.length; + }; -/** - * Echos the value of a value. Trys to print the value out - * in the best way possible given the different types. - * - * @param {Object} obj The object to print out. - * @param {Object} opts Optional options object that alters the output. - */ -/* legacy: obj, showHidden, depth, colors*/ -function inspect(obj, opts) { - // default options - var ctx = { - seen: [], - stylize: stylizeNoColor + BufferList.prototype.unshift = function unshift(v) { + var entry = { data: v, next: this.head }; + if (this.length === 0) this.tail = entry; + this.head = entry; + ++this.length; + }; + + BufferList.prototype.shift = function shift() { + if (this.length === 0) return; + var ret = this.head.data; + if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next; + --this.length; + return ret; + }; + + BufferList.prototype.clear = function clear() { + this.head = this.tail = null; + this.length = 0; + }; + + BufferList.prototype.join = function join(s) { + if (this.length === 0) return ''; + var p = this.head; + var ret = '' + p.data; + while (p = p.next) { + ret += s + p.data; + }return ret; + }; + + BufferList.prototype.concat = function concat(n) { + if (this.length === 0) return Buffer.alloc(0); + if (this.length === 1) return this.head.data; + var ret = Buffer.allocUnsafe(n >>> 0); + var p = this.head; + var i = 0; + while (p) { + copyBuffer(p.data, ret, i); + i += p.data.length; + p = p.next; + } + return ret; + }; + + return BufferList; +}(); + +if (util && util.inspect && util.inspect.custom) { + module.exports.prototype[util.inspect.custom] = function () { + var obj = util.inspect({ length: this.length }); + return this.constructor.name + ' ' + obj; }; - // legacy... - if (arguments.length >= 3) ctx.depth = arguments[2]; - if (arguments.length >= 4) ctx.colors = arguments[3]; - if (isBoolean(opts)) { - // legacy... - ctx.showHidden = opts; - } else if (opts) { - // got an "options" object - exports._extend(ctx, opts); - } - // set default options - if (isUndefined(ctx.showHidden)) ctx.showHidden = false; - if (isUndefined(ctx.depth)) ctx.depth = 2; - if (isUndefined(ctx.colors)) ctx.colors = false; - if (isUndefined(ctx.customInspect)) ctx.customInspect = true; - if (ctx.colors) ctx.stylize = stylizeWithColor; - return formatValue(ctx, obj, ctx.depth); } -exports.inspect = inspect; +},{"safe-buffer":32,"util":13}],30:[function(require,module,exports){ +'use strict'; +/**/ -// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics -inspect.colors = { - 'bold' : [1, 22], - 'italic' : [3, 23], - 'underline' : [4, 24], - 'inverse' : [7, 27], - 'white' : [37, 39], - 'grey' : [90, 39], - 'black' : [30, 39], - 'blue' : [34, 39], - 'cyan' : [36, 39], - 'green' : [32, 39], - 'magenta' : [35, 39], - 'red' : [31, 39], - 'yellow' : [33, 39] -}; +var pna = require('process-nextick-args'); +/**/ -// Don't use 'blue' not visible on cmd.exe -inspect.styles = { - 'special': 'cyan', - 'number': 'yellow', - 'boolean': 'yellow', - 'undefined': 'grey', - 'null': 'bold', - 'string': 'green', - 'date': 'magenta', - // "name": intentionally not styling - 'regexp': 'red' -}; +// undocumented cb() API, needed for core, not for public API +function destroy(err, cb) { + var _this = this; + + var readableDestroyed = this._readableState && this._readableState.destroyed; + var writableDestroyed = this._writableState && this._writableState.destroyed; + if (readableDestroyed || writableDestroyed) { + if (cb) { + cb(err); + } else if (err && (!this._writableState || !this._writableState.errorEmitted)) { + pna.nextTick(emitErrorNT, this, err); + } + return this; + } -function stylizeWithColor(str, styleType) { - var style = inspect.styles[styleType]; + // we set destroyed to true before firing error callbacks in order + // to make it re-entrance safe in case destroy() is called within callbacks - if (style) { - return '\u001b[' + inspect.colors[style][0] + 'm' + str + - '\u001b[' + inspect.colors[style][1] + 'm'; - } else { - return str; + if (this._readableState) { + this._readableState.destroyed = true; } -} + // if this is a duplex stream mark the writable part as destroyed as well + if (this._writableState) { + this._writableState.destroyed = true; + } -function stylizeNoColor(str, styleType) { - return str; -} + this._destroy(err || null, function (err) { + if (!cb && err) { + pna.nextTick(emitErrorNT, _this, err); + if (_this._writableState) { + _this._writableState.errorEmitted = true; + } + } else if (cb) { + cb(err); + } + }); + return this; +} -function arrayToHash(array) { - var hash = {}; +function undestroy() { + if (this._readableState) { + this._readableState.destroyed = false; + this._readableState.reading = false; + this._readableState.ended = false; + this._readableState.endEmitted = false; + } - array.forEach(function(val, idx) { - hash[val] = true; - }); + if (this._writableState) { + this._writableState.destroyed = false; + this._writableState.ended = false; + this._writableState.ending = false; + this._writableState.finished = false; + this._writableState.errorEmitted = false; + } +} - return hash; +function emitErrorNT(self, err) { + self.emit('error', err); } +module.exports = { + destroy: destroy, + undestroy: undestroy +}; +},{"process-nextick-args":22}],31:[function(require,module,exports){ +module.exports = require('events').EventEmitter; -function formatValue(ctx, value, recurseTimes) { - // Provide a hook for user-specified inspect functions. - // Check that value is an object with an inspect function on it - if (ctx.customInspect && - value && - isFunction(value.inspect) && - // Filter out the util module, it's inspect function is special - value.inspect !== exports.inspect && - // Also filter out any prototype objects using the circular check. - !(value.constructor && value.constructor.prototype === value)) { - var ret = value.inspect(recurseTimes, ctx); - if (!isString(ret)) { - ret = formatValue(ctx, ret, recurseTimes); - } - return ret; - } +},{"events":16}],32:[function(require,module,exports){ +/* eslint-disable node/no-deprecated-api */ +var buffer = require('buffer') +var Buffer = buffer.Buffer - // Primitive types cannot have properties - var primitive = formatPrimitive(ctx, value); - if (primitive) { - return primitive; +// alternative to using Object.keys for old browsers +function copyProps (src, dst) { + for (var key in src) { + dst[key] = src[key] } +} +if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) { + module.exports = buffer +} else { + // Copy properties from require('buffer') + copyProps(buffer, exports) + exports.Buffer = SafeBuffer +} - // Look up the keys of the object. - var keys = Object.keys(value); - var visibleKeys = arrayToHash(keys); +function SafeBuffer (arg, encodingOrOffset, length) { + return Buffer(arg, encodingOrOffset, length) +} - if (ctx.showHidden) { - keys = Object.getOwnPropertyNames(value); - } +// Copy static methods from Buffer +copyProps(Buffer, SafeBuffer) - // IE doesn't make error fields non-enumerable - // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx - if (isError(value) - && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) { - return formatError(value); +SafeBuffer.from = function (arg, encodingOrOffset, length) { + if (typeof arg === 'number') { + throw new TypeError('Argument must not be a number') } + return Buffer(arg, encodingOrOffset, length) +} - // Some type of object without properties can be shortcutted. - if (keys.length === 0) { - if (isFunction(value)) { - var name = value.name ? ': ' + value.name : ''; - return ctx.stylize('[Function' + name + ']', 'special'); - } - if (isRegExp(value)) { - return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); - } - if (isDate(value)) { - return ctx.stylize(Date.prototype.toString.call(value), 'date'); - } - if (isError(value)) { - return formatError(value); +SafeBuffer.alloc = function (size, fill, encoding) { + if (typeof size !== 'number') { + throw new TypeError('Argument must be a number') + } + var buf = Buffer(size) + if (fill !== undefined) { + if (typeof encoding === 'string') { + buf.fill(fill, encoding) + } else { + buf.fill(fill) } + } else { + buf.fill(0) } + return buf +} - var base = '', array = false, braces = ['{', '}']; - - // Make Array say that they are Array - if (isArray(value)) { - array = true; - braces = ['[', ']']; +SafeBuffer.allocUnsafe = function (size) { + if (typeof size !== 'number') { + throw new TypeError('Argument must be a number') } + return Buffer(size) +} - // Make functions say that they are functions - if (isFunction(value)) { - var n = value.name ? ': ' + value.name : ''; - base = ' [Function' + n + ']'; +SafeBuffer.allocUnsafeSlow = function (size) { + if (typeof size !== 'number') { + throw new TypeError('Argument must be a number') } + return buffer.SlowBuffer(size) +} - // Make RegExps say that they are RegExps - if (isRegExp(value)) { - base = ' ' + RegExp.prototype.toString.call(value); - } +},{"buffer":14}],33:[function(require,module,exports){ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. - // Make dates with properties first say the date - if (isDate(value)) { - base = ' ' + Date.prototype.toUTCString.call(value); - } +'use strict'; - // Make error with message first say the error - if (isError(value)) { - base = ' ' + formatError(value); - } +/**/ - if (keys.length === 0 && (!array || value.length == 0)) { - return braces[0] + base + braces[1]; - } +var Buffer = require('safe-buffer').Buffer; +/**/ - if (recurseTimes < 0) { - if (isRegExp(value)) { - return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); - } else { - return ctx.stylize('[Object]', 'special'); - } +var isEncoding = Buffer.isEncoding || function (encoding) { + encoding = '' + encoding; + switch (encoding && encoding.toLowerCase()) { + case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw': + return true; + default: + return false; } +}; - ctx.seen.push(value); - - var output; - if (array) { - output = formatArray(ctx, value, recurseTimes, visibleKeys, keys); - } else { - output = keys.map(function(key) { - return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array); - }); +function _normalizeEncoding(enc) { + if (!enc) return 'utf8'; + var retried; + while (true) { + switch (enc) { + case 'utf8': + case 'utf-8': + return 'utf8'; + case 'ucs2': + case 'ucs-2': + case 'utf16le': + case 'utf-16le': + return 'utf16le'; + case 'latin1': + case 'binary': + return 'latin1'; + case 'base64': + case 'ascii': + case 'hex': + return enc; + default: + if (retried) return; // undefined + enc = ('' + enc).toLowerCase(); + retried = true; + } } +}; - ctx.seen.pop(); - - return reduceToSingleString(output, base, braces); +// Do not cache `Buffer.isEncoding` when checking encoding names as some +// modules monkey-patch it to support additional encodings +function normalizeEncoding(enc) { + var nenc = _normalizeEncoding(enc); + if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc); + return nenc || enc; } - -function formatPrimitive(ctx, value) { - if (isUndefined(value)) - return ctx.stylize('undefined', 'undefined'); - if (isString(value)) { - var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '') - .replace(/'/g, "\\'") - .replace(/\\"/g, '"') + '\''; - return ctx.stylize(simple, 'string'); +// StringDecoder provides an interface for efficiently splitting a series of +// buffers into a series of JS strings without breaking apart multi-byte +// characters. +exports.StringDecoder = StringDecoder; +function StringDecoder(encoding) { + this.encoding = normalizeEncoding(encoding); + var nb; + switch (this.encoding) { + case 'utf16le': + this.text = utf16Text; + this.end = utf16End; + nb = 4; + break; + case 'utf8': + this.fillLast = utf8FillLast; + nb = 4; + break; + case 'base64': + this.text = base64Text; + this.end = base64End; + nb = 3; + break; + default: + this.write = simpleWrite; + this.end = simpleEnd; + return; } - if (isNumber(value)) - return ctx.stylize('' + value, 'number'); - if (isBoolean(value)) - return ctx.stylize('' + value, 'boolean'); - // For some reason typeof null is "object", so special case here. - if (isNull(value)) - return ctx.stylize('null', 'null'); + this.lastNeed = 0; + this.lastTotal = 0; + this.lastChar = Buffer.allocUnsafe(nb); } +StringDecoder.prototype.write = function (buf) { + if (buf.length === 0) return ''; + var r; + var i; + if (this.lastNeed) { + r = this.fillLast(buf); + if (r === undefined) return ''; + i = this.lastNeed; + this.lastNeed = 0; + } else { + i = 0; + } + if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i); + return r || ''; +}; -function formatError(value) { - return '[' + Error.prototype.toString.call(value) + ']'; -} +StringDecoder.prototype.end = utf8End; +// Returns only complete characters in a Buffer +StringDecoder.prototype.text = utf8Text; -function formatArray(ctx, value, recurseTimes, visibleKeys, keys) { - var output = []; - for (var i = 0, l = value.length; i < l; ++i) { - if (hasOwnProperty(value, String(i))) { - output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, - String(i), true)); - } else { - output.push(''); - } +// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer +StringDecoder.prototype.fillLast = function (buf) { + if (this.lastNeed <= buf.length) { + buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed); + return this.lastChar.toString(this.encoding, 0, this.lastTotal); } - keys.forEach(function(key) { - if (!key.match(/^\d+$/)) { - output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, - key, true)); - } - }); - return output; -} + buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length); + this.lastNeed -= buf.length; +}; +// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a +// continuation byte. If an invalid byte is detected, -2 is returned. +function utf8CheckByte(byte) { + if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4; + return byte >> 6 === 0x02 ? -1 : -2; +} -function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) { - var name, str, desc; - desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] }; - if (desc.get) { - if (desc.set) { - str = ctx.stylize('[Getter/Setter]', 'special'); - } else { - str = ctx.stylize('[Getter]', 'special'); - } - } else { - if (desc.set) { - str = ctx.stylize('[Setter]', 'special'); - } +// Checks at most 3 bytes at the end of a Buffer in order to detect an +// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4) +// needed to complete the UTF-8 character (if applicable) are returned. +function utf8CheckIncomplete(self, buf, i) { + var j = buf.length - 1; + if (j < i) return 0; + var nb = utf8CheckByte(buf[j]); + if (nb >= 0) { + if (nb > 0) self.lastNeed = nb - 1; + return nb; } - if (!hasOwnProperty(visibleKeys, key)) { - name = '[' + key + ']'; + if (--j < i || nb === -2) return 0; + nb = utf8CheckByte(buf[j]); + if (nb >= 0) { + if (nb > 0) self.lastNeed = nb - 2; + return nb; } - if (!str) { - if (ctx.seen.indexOf(desc.value) < 0) { - if (isNull(recurseTimes)) { - str = formatValue(ctx, desc.value, null); - } else { - str = formatValue(ctx, desc.value, recurseTimes - 1); - } - if (str.indexOf('\n') > -1) { - if (array) { - str = str.split('\n').map(function(line) { - return ' ' + line; - }).join('\n').substr(2); - } else { - str = '\n' + str.split('\n').map(function(line) { - return ' ' + line; - }).join('\n'); - } - } - } else { - str = ctx.stylize('[Circular]', 'special'); + if (--j < i || nb === -2) return 0; + nb = utf8CheckByte(buf[j]); + if (nb >= 0) { + if (nb > 0) { + if (nb === 2) nb = 0;else self.lastNeed = nb - 3; } + return nb; } - if (isUndefined(name)) { - if (array && key.match(/^\d+$/)) { - return str; + return 0; +} + +// Validates as many continuation bytes for a multi-byte UTF-8 character as +// needed or are available. If we see a non-continuation byte where we expect +// one, we "replace" the validated continuation bytes we've seen so far with +// a single UTF-8 replacement character ('\ufffd'), to match v8's UTF-8 decoding +// behavior. The continuation byte check is included three times in the case +// where all of the continuation bytes for a character exist in the same buffer. +// It is also done this way as a slight performance increase instead of using a +// loop. +function utf8CheckExtraBytes(self, buf, p) { + if ((buf[0] & 0xC0) !== 0x80) { + self.lastNeed = 0; + return '\ufffd'; + } + if (self.lastNeed > 1 && buf.length > 1) { + if ((buf[1] & 0xC0) !== 0x80) { + self.lastNeed = 1; + return '\ufffd'; } - name = JSON.stringify('' + key); - if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) { - name = name.substr(1, name.length - 2); - name = ctx.stylize(name, 'name'); - } else { - name = name.replace(/'/g, "\\'") - .replace(/\\"/g, '"') - .replace(/(^"|"$)/g, "'"); - name = ctx.stylize(name, 'string'); + if (self.lastNeed > 2 && buf.length > 2) { + if ((buf[2] & 0xC0) !== 0x80) { + self.lastNeed = 2; + return '\ufffd'; + } } } +} - return name + ': ' + str; +// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer. +function utf8FillLast(buf) { + var p = this.lastTotal - this.lastNeed; + var r = utf8CheckExtraBytes(this, buf, p); + if (r !== undefined) return r; + if (this.lastNeed <= buf.length) { + buf.copy(this.lastChar, p, 0, this.lastNeed); + return this.lastChar.toString(this.encoding, 0, this.lastTotal); + } + buf.copy(this.lastChar, p, 0, buf.length); + this.lastNeed -= buf.length; } +// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a +// partial character, the character's bytes are buffered until the required +// number of bytes are available. +function utf8Text(buf, i) { + var total = utf8CheckIncomplete(this, buf, i); + if (!this.lastNeed) return buf.toString('utf8', i); + this.lastTotal = total; + var end = buf.length - (total - this.lastNeed); + buf.copy(this.lastChar, 0, end); + return buf.toString('utf8', i, end); +} -function reduceToSingleString(output, base, braces) { - var numLinesEst = 0; - var length = output.reduce(function(prev, cur) { - numLinesEst++; - if (cur.indexOf('\n') >= 0) numLinesEst++; - return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1; - }, 0); +// For UTF-8, a replacement character is added when ending on a partial +// character. +function utf8End(buf) { + var r = buf && buf.length ? this.write(buf) : ''; + if (this.lastNeed) return r + '\ufffd'; + return r; +} - if (length > 60) { - return braces[0] + - (base === '' ? '' : base + '\n ') + - ' ' + - output.join(',\n ') + - ' ' + - braces[1]; +// UTF-16LE typically needs two bytes per character, but even if we have an even +// number of bytes available, we need to check if we end on a leading/high +// surrogate. In that case, we need to wait for the next two bytes in order to +// decode the last character properly. +function utf16Text(buf, i) { + if ((buf.length - i) % 2 === 0) { + var r = buf.toString('utf16le', i); + if (r) { + var c = r.charCodeAt(r.length - 1); + if (c >= 0xD800 && c <= 0xDBFF) { + this.lastNeed = 2; + this.lastTotal = 4; + this.lastChar[0] = buf[buf.length - 2]; + this.lastChar[1] = buf[buf.length - 1]; + return r.slice(0, -1); + } + } + return r; } - - return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1]; + this.lastNeed = 1; + this.lastTotal = 2; + this.lastChar[0] = buf[buf.length - 1]; + return buf.toString('utf16le', i, buf.length - 1); } - -// NOTE: These type checking functions intentionally don't use `instanceof` -// because it is fragile and can be easily faked with `Object.create()`. -function isArray(ar) { - return Array.isArray(ar); +// For UTF-16LE we do not explicitly append special replacement characters if we +// end on a partial character, we simply let v8 handle that. +function utf16End(buf) { + var r = buf && buf.length ? this.write(buf) : ''; + if (this.lastNeed) { + var end = this.lastTotal - this.lastNeed; + return r + this.lastChar.toString('utf16le', 0, end); + } + return r; } -exports.isArray = isArray; -function isBoolean(arg) { - return typeof arg === 'boolean'; +function base64Text(buf, i) { + var n = (buf.length - i) % 3; + if (n === 0) return buf.toString('base64', i); + this.lastNeed = 3 - n; + this.lastTotal = 3; + if (n === 1) { + this.lastChar[0] = buf[buf.length - 1]; + } else { + this.lastChar[0] = buf[buf.length - 2]; + this.lastChar[1] = buf[buf.length - 1]; + } + return buf.toString('base64', i, buf.length - n); } -exports.isBoolean = isBoolean; -function isNull(arg) { - return arg === null; +function base64End(buf) { + var r = buf && buf.length ? this.write(buf) : ''; + if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed); + return r; } -exports.isNull = isNull; -function isNullOrUndefined(arg) { - return arg == null; +// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex) +function simpleWrite(buf) { + return buf.toString(this.encoding); } -exports.isNullOrUndefined = isNullOrUndefined; -function isNumber(arg) { - return typeof arg === 'number'; +function simpleEnd(buf) { + return buf && buf.length ? this.write(buf) : ''; } -exports.isNumber = isNumber; +},{"safe-buffer":32}],34:[function(require,module,exports){ +exports = module.exports = require('./lib/_stream_readable.js'); +exports.Stream = exports; +exports.Readable = exports; +exports.Writable = require('./lib/_stream_writable.js'); +exports.Duplex = require('./lib/_stream_duplex.js'); +exports.Transform = require('./lib/_stream_transform.js'); +exports.PassThrough = require('./lib/_stream_passthrough.js'); -function isString(arg) { - return typeof arg === 'string'; -} -exports.isString = isString; +},{"./lib/_stream_duplex.js":24,"./lib/_stream_passthrough.js":25,"./lib/_stream_readable.js":26,"./lib/_stream_transform.js":27,"./lib/_stream_writable.js":28}],35:[function(require,module,exports){ +/*! safe-buffer. MIT License. Feross Aboukhadijeh */ +/* eslint-disable node/no-deprecated-api */ +var buffer = require('buffer') +var Buffer = buffer.Buffer -function isSymbol(arg) { - return typeof arg === 'symbol'; +// alternative to using Object.keys for old browsers +function copyProps (src, dst) { + for (var key in src) { + dst[key] = src[key] + } } -exports.isSymbol = isSymbol; - -function isUndefined(arg) { - return arg === void 0; +if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) { + module.exports = buffer +} else { + // Copy properties from require('buffer') + copyProps(buffer, exports) + exports.Buffer = SafeBuffer } -exports.isUndefined = isUndefined; -function isRegExp(re) { - return isObject(re) && objectToString(re) === '[object RegExp]'; +function SafeBuffer (arg, encodingOrOffset, length) { + return Buffer(arg, encodingOrOffset, length) } -exports.isRegExp = isRegExp; -function isObject(arg) { - return typeof arg === 'object' && arg !== null; -} -exports.isObject = isObject; +SafeBuffer.prototype = Object.create(Buffer.prototype) -function isDate(d) { - return isObject(d) && objectToString(d) === '[object Date]'; +// Copy static methods from Buffer +copyProps(Buffer, SafeBuffer) + +SafeBuffer.from = function (arg, encodingOrOffset, length) { + if (typeof arg === 'number') { + throw new TypeError('Argument must not be a number') + } + return Buffer(arg, encodingOrOffset, length) } -exports.isDate = isDate; -function isError(e) { - return isObject(e) && - (objectToString(e) === '[object Error]' || e instanceof Error); +SafeBuffer.alloc = function (size, fill, encoding) { + if (typeof size !== 'number') { + throw new TypeError('Argument must be a number') + } + var buf = Buffer(size) + if (fill !== undefined) { + if (typeof encoding === 'string') { + buf.fill(fill, encoding) + } else { + buf.fill(fill) + } + } else { + buf.fill(0) + } + return buf } -exports.isError = isError; -function isFunction(arg) { - return typeof arg === 'function'; +SafeBuffer.allocUnsafe = function (size) { + if (typeof size !== 'number') { + throw new TypeError('Argument must be a number') + } + return Buffer(size) } -exports.isFunction = isFunction; -function isPrimitive(arg) { - return arg === null || - typeof arg === 'boolean' || - typeof arg === 'number' || - typeof arg === 'string' || - typeof arg === 'symbol' || // ES6 symbol - typeof arg === 'undefined'; +SafeBuffer.allocUnsafeSlow = function (size) { + if (typeof size !== 'number') { + throw new TypeError('Argument must be a number') + } + return buffer.SlowBuffer(size) } -exports.isPrimitive = isPrimitive; -exports.isBuffer = require('./support/isBuffer'); +},{"buffer":14}],36:[function(require,module,exports){ +(function (setImmediate,clearImmediate){(function (){ +var nextTick = require('process/browser.js').nextTick; +var apply = Function.prototype.apply; +var slice = Array.prototype.slice; +var immediateIds = {}; +var nextImmediateId = 0; -function objectToString(o) { - return Object.prototype.toString.call(o); -} +// DOM APIs, for completeness +exports.setTimeout = function() { + return new Timeout(apply.call(setTimeout, window, arguments), clearTimeout); +}; +exports.setInterval = function() { + return new Timeout(apply.call(setInterval, window, arguments), clearInterval); +}; +exports.clearTimeout = +exports.clearInterval = function(timeout) { timeout.close(); }; -function pad(n) { - return n < 10 ? '0' + n.toString(10) : n.toString(10); +function Timeout(id, clearFn) { + this._id = id; + this._clearFn = clearFn; } +Timeout.prototype.unref = Timeout.prototype.ref = function() {}; +Timeout.prototype.close = function() { + this._clearFn.call(window, this._id); +}; +// Does not start the time, just sets up the members needed. +exports.enroll = function(item, msecs) { + clearTimeout(item._idleTimeoutId); + item._idleTimeout = msecs; +}; -var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', - 'Oct', 'Nov', 'Dec']; +exports.unenroll = function(item) { + clearTimeout(item._idleTimeoutId); + item._idleTimeout = -1; +}; -// 26 Feb 16:19:34 -function timestamp() { - var d = new Date(); - var time = [pad(d.getHours()), - pad(d.getMinutes()), - pad(d.getSeconds())].join(':'); - return [d.getDate(), months[d.getMonth()], time].join(' '); -} +exports._unrefActive = exports.active = function(item) { + clearTimeout(item._idleTimeoutId); + var msecs = item._idleTimeout; + if (msecs >= 0) { + item._idleTimeoutId = setTimeout(function onTimeout() { + if (item._onTimeout) + item._onTimeout(); + }, msecs); + } +}; -// log is just a thin wrapper to console.log that prepends a timestamp -exports.log = function() { - console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments)); +// That's not how node.js implements it but the exposed api is the same. +exports.setImmediate = typeof setImmediate === "function" ? setImmediate : function(fn) { + var id = nextImmediateId++; + var args = arguments.length < 2 ? false : slice.call(arguments, 1); + + immediateIds[id] = true; + + nextTick(function onNextTick() { + if (immediateIds[id]) { + // fn.call() is faster so we optimize for the common use-case + // @see http://jsperf.com/call-apply-segu + if (args) { + fn.apply(null, args); + } else { + fn.call(null); + } + // Prevent ids from leaking + exports.clearImmediate(id); + } + }); + + return id; }; +exports.clearImmediate = typeof clearImmediate === "function" ? clearImmediate : function(id) { + delete immediateIds[id]; +}; +}).call(this)}).call(this,require("timers").setImmediate,require("timers").clearImmediate) +},{"process/browser.js":23,"timers":36}],37:[function(require,module,exports){ +(function (global){(function (){ /** - * Inherit the prototype methods from one constructor into another. + * Module exports. + */ + +module.exports = deprecate; + +/** + * Mark that a method should not be used. + * Returns a modified function which warns once by default. * - * The Function.prototype.inherits from lang.js rewritten as a standalone - * function (not on Function.prototype). NOTE: If this file is to be loaded - * during bootstrapping this function needs to be rewritten using some native - * functions as prototype setup using normal JavaScript does not work as - * expected during bootstrapping (see mirror.js in r114903). + * If `localStorage.noDeprecation = true` is set, then it is a no-op. * - * @param {function} ctor Constructor function which needs to inherit the - * prototype. - * @param {function} superCtor Constructor function to inherit prototype from. + * If `localStorage.throwDeprecation = true` is set, then deprecated functions + * will throw an Error when invoked. + * + * If `localStorage.traceDeprecation = true` is set, then deprecated functions + * will invoke `console.trace()` instead of `console.error()`. + * + * @param {Function} fn - the function to deprecate + * @param {String} msg - the string to print to the console when `fn` is invoked + * @returns {Function} a new "deprecated" version of `fn` + * @api public */ -exports.inherits = require('inherits'); -exports._extend = function(origin, add) { - // Don't do anything if add isn't an object - if (!add || !isObject(add)) return origin; +function deprecate (fn, msg) { + if (config('noDeprecation')) { + return fn; + } - var keys = Object.keys(add); - var i = keys.length; - while (i--) { - origin[keys[i]] = add[keys[i]]; + var warned = false; + function deprecated() { + if (!warned) { + if (config('throwDeprecation')) { + throw new Error(msg); + } else if (config('traceDeprecation')) { + console.trace(msg); + } else { + console.warn(msg); + } + warned = true; + } + return fn.apply(this, arguments); } - return origin; -}; -function hasOwnProperty(obj, prop) { - return Object.prototype.hasOwnProperty.call(obj, prop); + return deprecated; +} + +/** + * Checks `localStorage` for boolean values for the given `name`. + * + * @param {String} name + * @returns {Boolean} + * @api private + */ + +function config (name) { + // accessing global.localStorage can trigger a DOMException in sandboxed iframes + try { + if (!global.localStorage) return false; + } catch (_) { + return false; + } + var val = global.localStorage[name]; + if (null == val) return false; + return String(val).toLowerCase() === 'true'; } -}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"./support/isBuffer":32,"_process":17,"inherits":31}]},{},[1])(1) -}); \ No newline at end of file +}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{}],38:[function(require,module,exports){ +arguments[4][8][0].apply(exports,arguments) +},{"dup":8}],39:[function(require,module,exports){ +arguments[4][9][0].apply(exports,arguments) +},{"dup":9}],40:[function(require,module,exports){ +arguments[4][10][0].apply(exports,arguments) +},{"./support/isBuffer":39,"_process":23,"dup":10,"inherits":38}]},{},[1])(1) +}); diff --git a/dist/msgpack5.min.js b/dist/msgpack5.min.js index bd6d2f2..3e2c355 100644 --- a/dist/msgpack5.min.js +++ b/dist/msgpack5.min.js @@ -1 +1 @@ -(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.msgpack5=f()}})(function(){var define,module,exports;return function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o=0,"must have a non-negative type");assert(decode,"must have a decode function");decodingTypes.push({type:type,decode:decode});return this}function register(type,constructor,encode,decode){assert(constructor,"must have a constructor");assert(encode,"must have an encode function");assert(type>=0,"must have a non-negative type");assert(decode,"must have a decode function");function check(obj){return obj instanceof constructor}function reEncode(obj){var buf=bl();var header=Buffer.allocUnsafe(1);header.writeInt8(type,0);buf.append(header);buf.append(encode(obj));return buf}this.registerEncoder(check,reEncode);this.registerDecoder(type,decode);return this}return{encode:buildEncode(encodingTypes,options.forceFloat64,options.compatibilityMode,options.disableTimestampEncoding),decode:buildDecode(decodingTypes),register:register,registerEncoder:registerEncoder,registerDecoder:registerDecoder,encoder:streams.encoder,decoder:streams.decoder,buffer:true,type:"msgpack5",IncompleteBufferError:buildDecode.IncompleteBufferError}}module.exports=msgpack},{"./lib/decoder":2,"./lib/encoder":3,"./lib/streams":4,assert:5,bl:7,"safe-buffer":28}],2:[function(require,module,exports){var bl=require("bl");var util=require("util");function IncompleteBufferError(message){Error.call(this);if(Error.captureStackTrace){Error.captureStackTrace(this,this.constructor)}this.name=this.constructor.name;this.message=message||"unable to decode"}util.inherits(IncompleteBufferError,Error);module.exports=function buildDecode(decodingTypes){return decode;function getSize(first){switch(first){case 196:return 2;case 197:return 3;case 198:return 5;case 199:return 3;case 200:return 4;case 201:return 6;case 202:return 5;case 203:return 9;case 204:return 2;case 205:return 3;case 206:return 5;case 207:return 9;case 208:return 2;case 209:return 3;case 210:return 5;case 211:return 9;case 212:return 3;case 213:return 4;case 214:return 6;case 215:return 10;case 216:return 18;case 217:return 2;case 218:return 3;case 219:return 5;case 222:return 3;default:return-1}}function hasMinBufferSize(first,length){var size=getSize(first);if(size!==-1&&length=headerLength+dataLength}function buildDecodeResult(value,bytesConsumed){return{value:value,bytesConsumed:bytesConsumed}}function decode(buf){if(!(buf instanceof bl)){buf=bl().append(buf)}var result=tryDecode(buf);if(result){buf.consume(result.bytesConsumed);return result.value}else{throw new IncompleteBufferError}}function tryDecode(buf,offset){offset=offset===undefined?0:offset;var bufLength=buf.length-offset;if(bufLength<=0){return null}var first=buf.readUInt8(offset);var length;var result=0;var type;var bytePos;if(!hasMinBufferSize(first,bufLength)){return null}switch(first){case 192:return buildDecodeResult(null,1);case 194:return buildDecodeResult(false,1);case 195:return buildDecodeResult(true,1);case 204:result=buf.readUInt8(offset+1);return buildDecodeResult(result,2);case 205:result=buf.readUInt16BE(offset+1);return buildDecodeResult(result,3);case 206:result=buf.readUInt32BE(offset+1);return buildDecodeResult(result,5);case 207:for(bytePos=7;bytePos>=0;bytePos--){result+=buf.readUInt8(offset+bytePos+1)*Math.pow(2,8*(7-bytePos))}return buildDecodeResult(result,9);case 208:result=buf.readInt8(offset+1);return buildDecodeResult(result,2);case 209:result=buf.readInt16BE(offset+1);return buildDecodeResult(result,3);case 210:result=buf.readInt32BE(offset+1);return buildDecodeResult(result,5);case 211:result=readInt64BE(buf.slice(offset+1,offset+9),0);return buildDecodeResult(result,9);case 202:result=buf.readFloatBE(offset+1);return buildDecodeResult(result,5);case 203:result=buf.readDoubleBE(offset+1);return buildDecodeResult(result,9);case 217:length=buf.readUInt8(offset+1);if(!isValidDataSize(length,bufLength,2)){return null}result=buf.toString("utf8",offset+2,offset+2+length);return buildDecodeResult(result,2+length);case 218:length=buf.readUInt16BE(offset+1);if(!isValidDataSize(length,bufLength,3)){return null}result=buf.toString("utf8",offset+3,offset+3+length);return buildDecodeResult(result,3+length);case 219:length=buf.readUInt32BE(offset+1);if(!isValidDataSize(length,bufLength,5)){return null}result=buf.toString("utf8",offset+5,offset+5+length);return buildDecodeResult(result,5+length);case 196:length=buf.readUInt8(offset+1);if(!isValidDataSize(length,bufLength,2)){return null}result=buf.slice(offset+2,offset+2+length);return buildDecodeResult(result,2+length);case 197:length=buf.readUInt16BE(offset+1);if(!isValidDataSize(length,bufLength,3)){return null}result=buf.slice(offset+3,offset+3+length);return buildDecodeResult(result,3+length);case 198:length=buf.readUInt32BE(offset+1);if(!isValidDataSize(length,bufLength,5)){return null}result=buf.slice(offset+5,offset+5+length);return buildDecodeResult(result,5+length);case 220:if(bufLength<3){return null}length=buf.readUInt16BE(offset+1);return decodeArray(buf,offset,length,3);case 221:if(bufLength<5){return null}length=buf.readUInt32BE(offset+1);return decodeArray(buf,offset,length,5);case 222:length=buf.readUInt16BE(offset+1);return decodeMap(buf,offset,length,3);case 223:throw new Error("map too big to decode in JS");case 212:return decodeFixExt(buf,offset,1);case 213:return decodeFixExt(buf,offset,2);case 214:return decodeFixExt(buf,offset,4);case 215:return decodeFixExt(buf,offset,8);case 216:return decodeFixExt(buf,offset,16);case 199:length=buf.readUInt8(offset+1);type=buf.readUInt8(offset+2);if(!isValidDataSize(length,bufLength,3)){return null}return decodeExt(buf,offset,type,length,3);case 200:length=buf.readUInt16BE(offset+1);type=buf.readUInt8(offset+3);if(!isValidDataSize(length,bufLength,4)){return null}return decodeExt(buf,offset,type,length,4);case 201:length=buf.readUInt32BE(offset+1);type=buf.readUInt8(offset+5);if(!isValidDataSize(length,bufLength,6)){return null}return decodeExt(buf,offset,type,length,6)}if((first&240)===144){length=first&15;return decodeArray(buf,offset,length,1)}else if((first&240)===128){length=first&15;return decodeMap(buf,offset,length,1)}else if((first&224)===160){length=first&31;if(isValidDataSize(length,bufLength,1)){result=buf.toString("utf8",offset+1,offset+length+1);return buildDecodeResult(result,length+1)}else{return null}}else if(first>=224){result=first-256;return buildDecodeResult(result,1)}else if(first<128){return buildDecodeResult(first,1)}else{throw new Error("not implemented yet")}}function readInt64BE(buf,offset){var negate=(buf[offset]&128)==128;if(negate){var carry=1;for(var i=offset+7;i>=offset;i--){var v=(buf[i]^255)+carry;buf[i]=v&255;carry=v>>8}}var hi=buf.readUInt32BE(offset+0);var lo=buf.readUInt32BE(offset+4);return(hi*4294967296+lo)*(negate?-1:+1)}function decodeArray(buf,offset,length,headerLength){var result=[];var i;var totalBytesConsumed=0;offset+=headerLength;for(i=0;i0){buf.write(obj,1)}}else if(len<=255&&!compatibilityMode){buf=Buffer.allocUnsafe(2+len);buf[0]=217;buf[1]=len;buf.write(obj,2)}else if(len<=65535){buf=Buffer.allocUnsafe(3+len);buf[0]=218;buf.writeUInt16BE(len,1);buf.write(obj,3)}else{buf=Buffer.allocUnsafe(5+len);buf[0]=219;buf.writeUInt32BE(len,1);buf.write(obj,5)}}else if(obj&&(obj.readUInt32LE||obj instanceof Uint8Array)){if(obj instanceof Uint8Array){obj=Buffer.from(obj)}if(obj.length<=255){buf=Buffer.allocUnsafe(2);buf[0]=196;buf[1]=obj.length}else if(obj.length<=65535){buf=Buffer.allocUnsafe(3);buf[0]=197;buf.writeUInt16BE(obj.length,1)}else{buf=Buffer.allocUnsafe(5);buf[0]=198;buf.writeUInt32BE(obj.length,1)}buf=bl([buf,obj])}else if(Array.isArray(obj)){if(obj.length<16){buf=Buffer.allocUnsafe(1);buf[0]=144|obj.length}else if(obj.length<65536){buf=Buffer.allocUnsafe(3);buf[0]=220;buf.writeUInt16BE(obj.length,1)}else{buf=Buffer.allocUnsafe(5);buf[0]=221;buf.writeUInt32BE(obj.length,1)}buf=obj.reduce(function(acc,obj){acc.append(encode(obj,true));return acc},bl().append(buf))}else if(!disableTimestampEncoding&&typeof obj.getDate==="function"){return encodeDate(obj)}else if(typeof obj==="object"){buf=encodeExt(obj)||encodeObject(obj)}else if(typeof obj==="number"){if(isFloat(obj)){return encodeFloat(obj,forceFloat64)}else if(obj>=0){if(obj<128){buf=Buffer.allocUnsafe(1);buf[0]=obj}else if(obj<256){buf=Buffer.allocUnsafe(2);buf[0]=204;buf[1]=obj}else if(obj<65536){buf=Buffer.allocUnsafe(3);buf[0]=205;buf.writeUInt16BE(obj,1)}else if(obj<=4294967295){buf=Buffer.allocUnsafe(5);buf[0]=206;buf.writeUInt32BE(obj,1)}else if(obj<=9007199254740991){buf=Buffer.allocUnsafe(9);buf[0]=207;write64BitUint(buf,obj)}else{return encodeFloat(obj,true)}}else{if(obj>=-32){buf=Buffer.allocUnsafe(1);buf[0]=256+obj}else if(obj>=-128){buf=Buffer.allocUnsafe(2);buf[0]=208;buf.writeInt8(obj,1)}else if(obj>=-32768){buf=Buffer.allocUnsafe(3);buf[0]=209;buf.writeInt16BE(obj,1)}else if(obj>-214748365){buf=Buffer.allocUnsafe(5);buf[0]=210;buf.writeInt32BE(obj,1)}else if(obj>=-9007199254740991){buf=Buffer.allocUnsafe(9);buf[0]=211;write64BitInt(buf,1,obj)}else{return encodeFloat(obj,true)}}}if(!buf){throw new Error("not implemented yet")}if(avoidSlice){return buf}else{return buf.slice()}}function encodeDate(dt){var encoded;var millis=dt*1;var seconds=Math.floor(millis/1e3);var nanos=(millis-seconds*1e3)*1e6;if(nanos||seconds>4294967295){encoded=new Buffer(10);encoded[0]=215;encoded[1]=-1;var upperNanos=nanos*4;var upperSeconds=seconds/Math.pow(2,32);var upper=upperNanos+upperSeconds&4294967295;var lower=seconds&4294967295;encoded.writeInt32BE(upper,2);encoded.writeInt32BE(lower,6)}else{encoded=new Buffer(6);encoded[0]=214;encoded[1]=-1;encoded.writeUInt32BE(Math.floor(millis/1e3),2)}return bl().append(encoded)}function encodeExt(obj){var i;var encoded;var length=-1;var headers=[];for(i=0;i>8);headers.push(length&255)}else{headers.push(201);headers.push(length>>24);headers.push(length>>16&255);headers.push(length>>8&255);headers.push(length&255)}return bl().append(Buffer.from(headers)).append(encoded)}function encodeObject(obj){var acc=[];var length=0;var key;var header;for(key in obj){if(obj.hasOwnProperty(key)&&obj[key]!==undefined&&typeof obj[key]!=="function"){++length;acc.push(encode(key,true));acc.push(encode(obj[key],true))}}if(length<16){header=Buffer.allocUnsafe(1);header[0]=128|length}else{header=Buffer.allocUnsafe(3);header[0]=222;header.writeUInt16BE(length,1)}acc.unshift(header);var result=acc.reduce(function(list,buf){return list.append(buf)},bl());return result}return encode};function write64BitUint(buf,obj){for(var currByte=7;currByte>=0;currByte--){buf[currByte+1]=obj&255;obj=obj/256}}function write64BitInt(buf,offset,num){var negate=num<0;if(negate){num=Math.abs(num)}var lo=num%4294967296;var hi=num/4294967296;buf.writeUInt32BE(Math.floor(hi),offset+0);buf.writeUInt32BE(lo,offset+4);if(negate){var carry=1;for(var i=offset+7;i>=offset;i--){var v=(buf[i]^255)+carry;buf[i]=v&255;carry=v>>8}}}function isFloat(n){return n!==Math.floor(n)}function encodeFloat(obj,forceFloat64){var buf;buf=Buffer.allocUnsafe(5);buf[0]=202;buf.writeFloatBE(obj,1);if(forceFloat64||Math.abs(obj-buf.readFloatBE(1))>TOLERANCE){buf=Buffer.allocUnsafe(9);buf[0]=203;buf.writeDoubleBE(obj,1)}return buf}},{bl:7,"safe-buffer":28}],4:[function(require,module,exports){"use strict";var Transform=require("readable-stream").Transform;var inherits=require("inherits");var bl=require("bl");function Base(opts){opts=opts||{};opts.objectMode=true;opts.highWaterMark=16;Transform.call(this,opts);this._msgpack=opts.msgpack}inherits(Base,Transform);function Encoder(opts){if(!(this instanceof Encoder)){opts=opts||{};opts.msgpack=this;return new Encoder(opts)}Base.call(this,opts)}inherits(Encoder,Base);Encoder.prototype._transform=function(obj,enc,done){var buf=null;try{buf=this._msgpack.encode(obj).slice(0)}catch(err){this.emit("error",err);return done()}this.push(buf);done()};function Decoder(opts){if(!(this instanceof Decoder)){opts=opts||{};opts.msgpack=this;return new Decoder(opts)}Base.call(this,opts);this._chunks=bl()}inherits(Decoder,Base);Decoder.prototype._transform=function(buf,enc,done){if(buf){this._chunks.append(buf)}try{var result=this._msgpack.decode(this._chunks);this.push(result)}catch(err){if(err instanceof this._msgpack.IncompleteBufferError){done()}else{this.emit("error",err)}return}if(this._chunks.length>0){this._transform(null,enc,done)}else{done()}};module.exports.decoder=Decoder;module.exports.encoder=Encoder},{bl:7,inherits:13,"readable-stream":27}],5:[function(require,module,exports){(function(global){"use strict";function compare(a,b){if(a===b){return 0}var x=a.length;var y=b.length;for(var i=0,len=Math.min(x,y);i=0){var next_line=out.indexOf("\n",idx+1);out=out.substring(next_line+1)}this.stack=out}}};util.inherits(assert.AssertionError,Error);function truncate(s,n){if(typeof s==="string"){return s.length=0;i--){if(ka[i]!==kb[i])return false}for(i=ka.length-1;i>=0;i--){key=ka[i];if(!_deepEqual(a[key],b[key],strict,actualVisitedObjects))return false}return true}assert.notDeepEqual=function notDeepEqual(actual,expected,message){if(_deepEqual(actual,expected,false)){fail(actual,expected,message,"notDeepEqual",assert.notDeepEqual)}};assert.notDeepStrictEqual=notDeepStrictEqual;function notDeepStrictEqual(actual,expected,message){if(_deepEqual(actual,expected,true)){fail(actual,expected,message,"notDeepStrictEqual",notDeepStrictEqual)}}assert.strictEqual=function strictEqual(actual,expected,message){if(actual!==expected){fail(actual,expected,message,"===",assert.strictEqual)}};assert.notStrictEqual=function notStrictEqual(actual,expected,message){if(actual===expected){fail(actual,expected,message,"!==",assert.notStrictEqual)}};function expectedException(actual,expected){if(!actual||!expected){return false}if(Object.prototype.toString.call(expected)=="[object RegExp]"){return expected.test(actual)}try{if(actual instanceof expected){return true}}catch(e){}if(Error.isPrototypeOf(expected)){return false}return expected.call({},actual)===true}function _tryBlock(block){var error;try{block()}catch(e){error=e}return error}function _throws(shouldThrow,block,expected,message){var actual;if(typeof block!=="function"){throw new TypeError('"block" argument must be a function')}if(typeof expected==="string"){message=expected;expected=null}actual=_tryBlock(block);message=(expected&&expected.name?" ("+expected.name+").":".")+(message?" "+message:".");if(shouldThrow&&!actual){fail(actual,expected,"Missing expected exception"+message)}var userProvidedMessage=typeof message==="string";var isUnwantedException=!shouldThrow&&util.isError(actual);var isUnexpectedException=!shouldThrow&&actual&&!expected;if(isUnwantedException&&userProvidedMessage&&expectedException(actual,expected)||isUnexpectedException){fail(actual,expected,"Got unwanted exception"+message)}if(shouldThrow&&actual&&expected&&!expectedException(actual,expected)||!shouldThrow&&actual){throw actual}}assert.throws=function(block,error,message){_throws(true,block,error,message)};assert.doesNotThrow=function(block,error,message){_throws(false,block,error,message)};assert.ifError=function(err){if(err)throw err};var objectKeys=Object.keys||function(obj){var keys=[];for(var key in obj){if(hasOwn.call(obj,key))keys.push(key)}return keys}}).call(this,typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{"util/":33}],6:[function(require,module,exports){"use strict";exports.byteLength=byteLength;exports.toByteArray=toByteArray;exports.fromByteArray=fromByteArray;var lookup=[];var revLookup=[];var Arr=typeof Uint8Array!=="undefined"?Uint8Array:Array;var code="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";for(var i=0,len=code.length;i0){throw new Error("Invalid string. Length must be a multiple of 4")}return b64[len-2]==="="?2:b64[len-1]==="="?1:0}function byteLength(b64){return b64.length*3/4-placeHoldersCount(b64)}function toByteArray(b64){var i,l,tmp,placeHolders,arr;var len=b64.length;placeHolders=placeHoldersCount(b64);arr=new Arr(len*3/4-placeHolders);l=placeHolders>0?len-4:len;var L=0;for(i=0;i>16&255;arr[L++]=tmp>>8&255;arr[L++]=tmp&255}if(placeHolders===2){tmp=revLookup[b64.charCodeAt(i)]<<2|revLookup[b64.charCodeAt(i+1)]>>4;arr[L++]=tmp&255}else if(placeHolders===1){tmp=revLookup[b64.charCodeAt(i)]<<10|revLookup[b64.charCodeAt(i+1)]<<4|revLookup[b64.charCodeAt(i+2)]>>2;arr[L++]=tmp>>8&255;arr[L++]=tmp&255}return arr}function tripletToBase64(num){return lookup[num>>18&63]+lookup[num>>12&63]+lookup[num>>6&63]+lookup[num&63]}function encodeChunk(uint8,start,end){var tmp;var output=[];for(var i=start;ilen2?len2:i+maxChunkLength))}if(extraBytes===1){tmp=uint8[len-1];output+=lookup[tmp>>2];output+=lookup[tmp<<4&63];output+="=="}else if(extraBytes===2){tmp=(uint8[len-2]<<8)+uint8[len-1];output+=lookup[tmp>>10];output+=lookup[tmp>>4&63];output+=lookup[tmp<<2&63];output+="="}parts.push(output);return parts.join("")}},{}],7:[function(require,module,exports){(function(Buffer){var DuplexStream=require("readable-stream/duplex"),util=require("util");function BufferList(callback){if(!(this instanceof BufferList))return new BufferList(callback);this._bufs=[];this.length=0;if(typeof callback=="function"){this._callback=callback;var piper=function piper(err){if(this._callback){this._callback(err);this._callback=null}}.bind(this);this.on("pipe",function onPipe(src){src.on("error",piper)});this.on("unpipe",function onUnpipe(src){src.removeListener("error",piper)})}else{this.append(callback)}DuplexStream.call(this)}util.inherits(BufferList,DuplexStream);BufferList.prototype._offset=function _offset(offset){var tot=0,i=0,_t;if(offset===0)return[0,0];for(;ithis.length)srcEnd=this.length;if(srcStart>=this.length)return dst||new Buffer(0);if(srcEnd<=0)return dst||new Buffer(0);var copy=!!dst,off=this._offset(srcStart),len=srcEnd-srcStart,bytes=len,bufoff=copy&&dstStart||0,start=off[1],l,i;if(srcStart===0&&srcEnd==this.length){if(!copy){return this._bufs.length===1?this._bufs[0]:Buffer.concat(this._bufs,this.length)}for(i=0;il){this._bufs[i].copy(dst,bufoff,start)}else{this._bufs[i].copy(dst,bufoff,start,start+bytes);break}bufoff+=l;bytes-=l;if(start)start=0}return dst};BufferList.prototype.shallowSlice=function shallowSlice(start,end){start=start||0;end=end||this.length;if(start<0)start+=this.length;if(end<0)end+=this.length;var startOffset=this._offset(start),endOffset=this._offset(end),buffers=this._bufs.slice(startOffset[0],endOffset[0]+1);if(endOffset[1]==0)buffers.pop();else buffers[buffers.length-1]=buffers[buffers.length-1].slice(0,endOffset[1]);if(startOffset[1]!=0)buffers[0]=buffers[0].slice(startOffset[1]);return new BufferList(buffers)};BufferList.prototype.toString=function toString(encoding,start,end){return this.slice(start,end).toString(encoding)};BufferList.prototype.consume=function consume(bytes){while(this._bufs.length){if(bytes>=this._bufs[0].length){bytes-=this._bufs[0].length;this.length-=this._bufs[0].length;this._bufs.shift()}else{this._bufs[0]=this._bufs[0].slice(bytes);this.length-=bytes;break}}return this};BufferList.prototype.duplicate=function duplicate(){var i=0,copy=new BufferList;for(;iK_MAX_LENGTH){throw new RangeError("Invalid typed array length")}var buf=new Uint8Array(length);buf.__proto__=Buffer.prototype;return buf}function Buffer(arg,encodingOrOffset,length){if(typeof arg==="number"){if(typeof encodingOrOffset==="string"){throw new Error("If encoding is specified then the first argument must be a string")}return allocUnsafe(arg)}return from(arg,encodingOrOffset,length)}if(typeof Symbol!=="undefined"&&Symbol.species&&Buffer[Symbol.species]===Buffer){Object.defineProperty(Buffer,Symbol.species,{value:null,configurable:true,enumerable:false,writable:false})}Buffer.poolSize=8192;function from(value,encodingOrOffset,length){if(typeof value==="number"){throw new TypeError('"value" argument must not be a number')}if(isArrayBuffer(value)){return fromArrayBuffer(value,encodingOrOffset,length)}if(typeof value==="string"){return fromString(value,encodingOrOffset)}return fromObject(value)}Buffer.from=function(value,encodingOrOffset,length){return from(value,encodingOrOffset,length)};Buffer.prototype.__proto__=Uint8Array.prototype;Buffer.__proto__=Uint8Array;function assertSize(size){if(typeof size!=="number"){throw new TypeError('"size" argument must be a number')}else if(size<0){throw new RangeError('"size" argument must not be negative')}}function alloc(size,fill,encoding){assertSize(size);if(size<=0){return createBuffer(size)}if(fill!==undefined){return typeof encoding==="string"?createBuffer(size).fill(fill,encoding):createBuffer(size).fill(fill)}return createBuffer(size)}Buffer.alloc=function(size,fill,encoding){return alloc(size,fill,encoding)};function allocUnsafe(size){assertSize(size);return createBuffer(size<0?0:checked(size)|0)}Buffer.allocUnsafe=function(size){return allocUnsafe(size)};Buffer.allocUnsafeSlow=function(size){return allocUnsafe(size)};function fromString(string,encoding){if(typeof encoding!=="string"||encoding===""){encoding="utf8"}if(!Buffer.isEncoding(encoding)){throw new TypeError('"encoding" must be a valid string encoding')}var length=byteLength(string,encoding)|0;var buf=createBuffer(length);var actual=buf.write(string,encoding);if(actual!==length){buf=buf.slice(0,actual)}return buf}function fromArrayLike(array){var length=array.length<0?0:checked(array.length)|0;var buf=createBuffer(length);for(var i=0;i=K_MAX_LENGTH){throw new RangeError("Attempt to allocate Buffer larger than maximum "+"size: 0x"+K_MAX_LENGTH.toString(16)+" bytes")}return length|0}function SlowBuffer(length){if(+length!=length){length=0}return Buffer.alloc(+length)}Buffer.isBuffer=function isBuffer(b){return b!=null&&b._isBuffer===true};Buffer.compare=function compare(a,b){if(!Buffer.isBuffer(a)||!Buffer.isBuffer(b)){throw new TypeError("Arguments must be Buffers")}if(a===b)return 0;var x=a.length;var y=b.length;for(var i=0,len=Math.min(x,y);i>>1;case"base64":return base64ToBytes(string).length;default:if(loweredCase)return utf8ToBytes(string).length;encoding=(""+encoding).toLowerCase();loweredCase=true}}}Buffer.byteLength=byteLength;function slowToString(encoding,start,end){var loweredCase=false;if(start===undefined||start<0){start=0}if(start>this.length){return""}if(end===undefined||end>this.length){end=this.length}if(end<=0){return""}end>>>=0;start>>>=0;if(end<=start){return""}if(!encoding)encoding="utf8";while(true){switch(encoding){case"hex":return hexSlice(this,start,end);case"utf8":case"utf-8":return utf8Slice(this,start,end);case"ascii":return asciiSlice(this,start,end);case"latin1":case"binary":return latin1Slice(this,start,end);case"base64":return base64Slice(this,start,end);case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return utf16leSlice(this,start,end);default:if(loweredCase)throw new TypeError("Unknown encoding: "+encoding);encoding=(encoding+"").toLowerCase();loweredCase=true}}}Buffer.prototype._isBuffer=true;function swap(b,n,m){var i=b[n];b[n]=b[m];b[m]=i}Buffer.prototype.swap16=function swap16(){var len=this.length;if(len%2!==0){throw new RangeError("Buffer size must be a multiple of 16-bits")}for(var i=0;i0){str=this.toString("hex",0,max).match(/.{2}/g).join(" ");if(this.length>max)str+=" ... "}return""};Buffer.prototype.compare=function compare(target,start,end,thisStart,thisEnd){if(!Buffer.isBuffer(target)){throw new TypeError("Argument must be a Buffer")}if(start===undefined){start=0}if(end===undefined){end=target?target.length:0}if(thisStart===undefined){thisStart=0}if(thisEnd===undefined){thisEnd=this.length}if(start<0||end>target.length||thisStart<0||thisEnd>this.length){throw new RangeError("out of range index")}if(thisStart>=thisEnd&&start>=end){return 0}if(thisStart>=thisEnd){return-1}if(start>=end){return 1}start>>>=0;end>>>=0;thisStart>>>=0;thisEnd>>>=0;if(this===target)return 0;var x=thisEnd-thisStart;var y=end-start;var len=Math.min(x,y);var thisCopy=this.slice(thisStart,thisEnd);var targetCopy=target.slice(start,end);for(var i=0;i2147483647){byteOffset=2147483647}else if(byteOffset<-2147483648){byteOffset=-2147483648}byteOffset=+byteOffset;if(numberIsNaN(byteOffset)){byteOffset=dir?0:buffer.length-1}if(byteOffset<0)byteOffset=buffer.length+byteOffset;if(byteOffset>=buffer.length){if(dir)return-1;else byteOffset=buffer.length-1}else if(byteOffset<0){if(dir)byteOffset=0;else return-1}if(typeof val==="string"){val=Buffer.from(val,encoding)}if(Buffer.isBuffer(val)){if(val.length===0){return-1}return arrayIndexOf(buffer,val,byteOffset,encoding,dir)}else if(typeof val==="number"){val=val&255;if(typeof Uint8Array.prototype.indexOf==="function"){if(dir){return Uint8Array.prototype.indexOf.call(buffer,val,byteOffset)}else{return Uint8Array.prototype.lastIndexOf.call(buffer,val,byteOffset)}}return arrayIndexOf(buffer,[val],byteOffset,encoding,dir)}throw new TypeError("val must be string, number or Buffer")}function arrayIndexOf(arr,val,byteOffset,encoding,dir){var indexSize=1;var arrLength=arr.length;var valLength=val.length;if(encoding!==undefined){encoding=String(encoding).toLowerCase();if(encoding==="ucs2"||encoding==="ucs-2"||encoding==="utf16le"||encoding==="utf-16le"){if(arr.length<2||val.length<2){return-1}indexSize=2;arrLength/=2;valLength/=2;byteOffset/=2}}function read(buf,i){if(indexSize===1){return buf[i]}else{return buf.readUInt16BE(i*indexSize)}}var i;if(dir){var foundIndex=-1;for(i=byteOffset;iarrLength)byteOffset=arrLength-valLength;for(i=byteOffset;i>=0;i--){var found=true;for(var j=0;jremaining){length=remaining}}var strLen=string.length;if(strLen%2!==0)throw new TypeError("Invalid hex string");if(length>strLen/2){length=strLen/2}for(var i=0;i>>0;if(isFinite(length)){length=length>>>0;if(encoding===undefined)encoding="utf8"}else{encoding=length;length=undefined}}else{throw new Error("Buffer.write(string, encoding, offset[, length]) is no longer supported")}var remaining=this.length-offset;if(length===undefined||length>remaining)length=remaining;if(string.length>0&&(length<0||offset<0)||offset>this.length){throw new RangeError("Attempt to write outside buffer bounds")}if(!encoding)encoding="utf8";var loweredCase=false;for(;;){switch(encoding){case"hex":return hexWrite(this,string,offset,length);case"utf8":case"utf-8":return utf8Write(this,string,offset,length);case"ascii":return asciiWrite(this,string,offset,length);case"latin1":case"binary":return latin1Write(this,string,offset,length);case"base64":return base64Write(this,string,offset,length);case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return ucs2Write(this,string,offset,length);default:if(loweredCase)throw new TypeError("Unknown encoding: "+encoding);encoding=(""+encoding).toLowerCase();loweredCase=true}}};Buffer.prototype.toJSON=function toJSON(){return{type:"Buffer",data:Array.prototype.slice.call(this._arr||this,0)}};function base64Slice(buf,start,end){if(start===0&&end===buf.length){return base64.fromByteArray(buf)}else{return base64.fromByteArray(buf.slice(start,end))}}function utf8Slice(buf,start,end){end=Math.min(buf.length,end);var res=[];var i=start;while(i239?4:firstByte>223?3:firstByte>191?2:1;if(i+bytesPerSequence<=end){var secondByte,thirdByte,fourthByte,tempCodePoint;switch(bytesPerSequence){case 1:if(firstByte<128){codePoint=firstByte}break;case 2:secondByte=buf[i+1];if((secondByte&192)===128){tempCodePoint=(firstByte&31)<<6|secondByte&63;if(tempCodePoint>127){codePoint=tempCodePoint}}break;case 3:secondByte=buf[i+1];thirdByte=buf[i+2];if((secondByte&192)===128&&(thirdByte&192)===128){tempCodePoint=(firstByte&15)<<12|(secondByte&63)<<6|thirdByte&63;if(tempCodePoint>2047&&(tempCodePoint<55296||tempCodePoint>57343)){codePoint=tempCodePoint}}break;case 4:secondByte=buf[i+1];thirdByte=buf[i+2];fourthByte=buf[i+3];if((secondByte&192)===128&&(thirdByte&192)===128&&(fourthByte&192)===128){tempCodePoint=(firstByte&15)<<18|(secondByte&63)<<12|(thirdByte&63)<<6|fourthByte&63;if(tempCodePoint>65535&&tempCodePoint<1114112){codePoint=tempCodePoint}}}}if(codePoint===null){codePoint=65533;bytesPerSequence=1}else if(codePoint>65535){codePoint-=65536;res.push(codePoint>>>10&1023|55296);codePoint=56320|codePoint&1023}res.push(codePoint);i+=bytesPerSequence}return decodeCodePointsArray(res)}var MAX_ARGUMENTS_LENGTH=4096;function decodeCodePointsArray(codePoints){var len=codePoints.length;if(len<=MAX_ARGUMENTS_LENGTH){return String.fromCharCode.apply(String,codePoints)}var res="";var i=0;while(ilen)end=len;var out="";for(var i=start;ilen){start=len}if(end<0){end+=len;if(end<0)end=0}else if(end>len){end=len}if(endlength)throw new RangeError("Trying to access beyond buffer length")}Buffer.prototype.readUIntLE=function readUIntLE(offset,byteLength,noAssert){offset=offset>>>0;byteLength=byteLength>>>0;if(!noAssert)checkOffset(offset,byteLength,this.length);var val=this[offset];var mul=1;var i=0;while(++i>>0;byteLength=byteLength>>>0;if(!noAssert){checkOffset(offset,byteLength,this.length)}var val=this[offset+--byteLength];var mul=1;while(byteLength>0&&(mul*=256)){val+=this[offset+--byteLength]*mul}return val};Buffer.prototype.readUInt8=function readUInt8(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,1,this.length);return this[offset]};Buffer.prototype.readUInt16LE=function readUInt16LE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,2,this.length);return this[offset]|this[offset+1]<<8};Buffer.prototype.readUInt16BE=function readUInt16BE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,2,this.length);return this[offset]<<8|this[offset+1]};Buffer.prototype.readUInt32LE=function readUInt32LE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return(this[offset]|this[offset+1]<<8|this[offset+2]<<16)+this[offset+3]*16777216};Buffer.prototype.readUInt32BE=function readUInt32BE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return this[offset]*16777216+(this[offset+1]<<16|this[offset+2]<<8|this[offset+3])};Buffer.prototype.readIntLE=function readIntLE(offset,byteLength,noAssert){offset=offset>>>0;byteLength=byteLength>>>0;if(!noAssert)checkOffset(offset,byteLength,this.length);var val=this[offset];var mul=1;var i=0;while(++i=mul)val-=Math.pow(2,8*byteLength);return val};Buffer.prototype.readIntBE=function readIntBE(offset,byteLength,noAssert){offset=offset>>>0;byteLength=byteLength>>>0;if(!noAssert)checkOffset(offset,byteLength,this.length);var i=byteLength;var mul=1;var val=this[offset+--i];while(i>0&&(mul*=256)){val+=this[offset+--i]*mul}mul*=128;if(val>=mul)val-=Math.pow(2,8*byteLength);return val};Buffer.prototype.readInt8=function readInt8(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,1,this.length);if(!(this[offset]&128))return this[offset];return(255-this[offset]+1)*-1};Buffer.prototype.readInt16LE=function readInt16LE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,2,this.length);var val=this[offset]|this[offset+1]<<8;return val&32768?val|4294901760:val};Buffer.prototype.readInt16BE=function readInt16BE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,2,this.length);var val=this[offset+1]|this[offset]<<8;return val&32768?val|4294901760:val};Buffer.prototype.readInt32LE=function readInt32LE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return this[offset]|this[offset+1]<<8|this[offset+2]<<16|this[offset+3]<<24};Buffer.prototype.readInt32BE=function readInt32BE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return this[offset]<<24|this[offset+1]<<16|this[offset+2]<<8|this[offset+3]};Buffer.prototype.readFloatLE=function readFloatLE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return ieee754.read(this,offset,true,23,4)};Buffer.prototype.readFloatBE=function readFloatBE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return ieee754.read(this,offset,false,23,4)};Buffer.prototype.readDoubleLE=function readDoubleLE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,8,this.length);return ieee754.read(this,offset,true,52,8)};Buffer.prototype.readDoubleBE=function readDoubleBE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,8,this.length);return ieee754.read(this,offset,false,52,8)};function checkInt(buf,value,offset,ext,max,min){if(!Buffer.isBuffer(buf))throw new TypeError('"buffer" argument must be a Buffer instance');if(value>max||valuebuf.length)throw new RangeError("Index out of range")}Buffer.prototype.writeUIntLE=function writeUIntLE(value,offset,byteLength,noAssert){value=+value;offset=offset>>>0;byteLength=byteLength>>>0;if(!noAssert){var maxBytes=Math.pow(2,8*byteLength)-1;checkInt(this,value,offset,byteLength,maxBytes,0)}var mul=1;var i=0;this[offset]=value&255;while(++i>>0;byteLength=byteLength>>>0;if(!noAssert){var maxBytes=Math.pow(2,8*byteLength)-1;checkInt(this,value,offset,byteLength,maxBytes,0)}var i=byteLength-1;var mul=1;this[offset+i]=value&255;while(--i>=0&&(mul*=256)){this[offset+i]=value/mul&255}return offset+byteLength};Buffer.prototype.writeUInt8=function writeUInt8(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,1,255,0);this[offset]=value&255;return offset+1};Buffer.prototype.writeUInt16LE=function writeUInt16LE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,2,65535,0);this[offset]=value&255;this[offset+1]=value>>>8;return offset+2};Buffer.prototype.writeUInt16BE=function writeUInt16BE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,2,65535,0);this[offset]=value>>>8;this[offset+1]=value&255;return offset+2};Buffer.prototype.writeUInt32LE=function writeUInt32LE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,4,4294967295,0);this[offset+3]=value>>>24;this[offset+2]=value>>>16;this[offset+1]=value>>>8;this[offset]=value&255;return offset+4};Buffer.prototype.writeUInt32BE=function writeUInt32BE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,4,4294967295,0);this[offset]=value>>>24;this[offset+1]=value>>>16;this[offset+2]=value>>>8;this[offset+3]=value&255;return offset+4};Buffer.prototype.writeIntLE=function writeIntLE(value,offset,byteLength,noAssert){value=+value;offset=offset>>>0;if(!noAssert){var limit=Math.pow(2,8*byteLength-1);checkInt(this,value,offset,byteLength,limit-1,-limit)}var i=0;var mul=1;var sub=0;this[offset]=value&255;while(++i>0)-sub&255}return offset+byteLength};Buffer.prototype.writeIntBE=function writeIntBE(value,offset,byteLength,noAssert){value=+value;offset=offset>>>0;if(!noAssert){var limit=Math.pow(2,8*byteLength-1);checkInt(this,value,offset,byteLength,limit-1,-limit)}var i=byteLength-1;var mul=1;var sub=0;this[offset+i]=value&255;while(--i>=0&&(mul*=256)){if(value<0&&sub===0&&this[offset+i+1]!==0){sub=1}this[offset+i]=(value/mul>>0)-sub&255}return offset+byteLength};Buffer.prototype.writeInt8=function writeInt8(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,1,127,-128);if(value<0)value=255+value+1;this[offset]=value&255;return offset+1};Buffer.prototype.writeInt16LE=function writeInt16LE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,2,32767,-32768);this[offset]=value&255;this[offset+1]=value>>>8;return offset+2};Buffer.prototype.writeInt16BE=function writeInt16BE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,2,32767,-32768);this[offset]=value>>>8;this[offset+1]=value&255;return offset+2};Buffer.prototype.writeInt32LE=function writeInt32LE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,4,2147483647,-2147483648);this[offset]=value&255;this[offset+1]=value>>>8;this[offset+2]=value>>>16;this[offset+3]=value>>>24;return offset+4};Buffer.prototype.writeInt32BE=function writeInt32BE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,4,2147483647,-2147483648);if(value<0)value=4294967295+value+1;this[offset]=value>>>24;this[offset+1]=value>>>16;this[offset+2]=value>>>8;this[offset+3]=value&255;return offset+4};function checkIEEE754(buf,value,offset,ext,max,min){if(offset+ext>buf.length)throw new RangeError("Index out of range");if(offset<0)throw new RangeError("Index out of range")}function writeFloat(buf,value,offset,littleEndian,noAssert){value=+value;offset=offset>>>0;if(!noAssert){checkIEEE754(buf,value,offset,4,34028234663852886e22,-34028234663852886e22)}ieee754.write(buf,value,offset,littleEndian,23,4);return offset+4}Buffer.prototype.writeFloatLE=function writeFloatLE(value,offset,noAssert){return writeFloat(this,value,offset,true,noAssert)};Buffer.prototype.writeFloatBE=function writeFloatBE(value,offset,noAssert){return writeFloat(this,value,offset,false,noAssert)};function writeDouble(buf,value,offset,littleEndian,noAssert){value=+value;offset=offset>>>0;if(!noAssert){checkIEEE754(buf,value,offset,8,17976931348623157e292,-17976931348623157e292)}ieee754.write(buf,value,offset,littleEndian,52,8);return offset+8}Buffer.prototype.writeDoubleLE=function writeDoubleLE(value,offset,noAssert){return writeDouble(this,value,offset,true,noAssert)};Buffer.prototype.writeDoubleBE=function writeDoubleBE(value,offset,noAssert){return writeDouble(this,value,offset,false,noAssert)};Buffer.prototype.copy=function copy(target,targetStart,start,end){if(!start)start=0;if(!end&&end!==0)end=this.length;if(targetStart>=target.length)targetStart=target.length;if(!targetStart)targetStart=0;if(end>0&&end=this.length)throw new RangeError("sourceStart out of bounds");if(end<0)throw new RangeError("sourceEnd out of bounds");if(end>this.length)end=this.length;if(target.length-targetStart=0;--i){target[i+targetStart]=this[i+start]}}else if(len<1e3){for(i=0;i>>0;end=end===undefined?this.length:end>>>0;if(!val)val=0;var i;if(typeof val==="number"){for(i=start;i55295&&codePoint<57344){if(!leadSurrogate){if(codePoint>56319){if((units-=3)>-1)bytes.push(239,191,189);continue}else if(i+1===length){if((units-=3)>-1)bytes.push(239,191,189);continue}leadSurrogate=codePoint;continue}if(codePoint<56320){if((units-=3)>-1)bytes.push(239,191,189);leadSurrogate=codePoint;continue}codePoint=(leadSurrogate-55296<<10|codePoint-56320)+65536}else if(leadSurrogate){if((units-=3)>-1)bytes.push(239,191,189)}leadSurrogate=null;if(codePoint<128){if((units-=1)<0)break;bytes.push(codePoint)}else if(codePoint<2048){if((units-=2)<0)break;bytes.push(codePoint>>6|192,codePoint&63|128)}else if(codePoint<65536){if((units-=3)<0)break;bytes.push(codePoint>>12|224,codePoint>>6&63|128,codePoint&63|128)}else if(codePoint<1114112){if((units-=4)<0)break;bytes.push(codePoint>>18|240,codePoint>>12&63|128,codePoint>>6&63|128,codePoint&63|128)}else{throw new Error("Invalid code point")}}return bytes}function asciiToBytes(str){var byteArray=[];for(var i=0;i>8;lo=c%256;byteArray.push(lo);byteArray.push(hi)}return byteArray}function base64ToBytes(str){return base64.toByteArray(base64clean(str))}function blitBuffer(src,dst,offset,length){for(var i=0;i=dst.length||i>=src.length)break;dst[i+offset]=src[i]}return i}function isArrayBuffer(obj){return obj instanceof ArrayBuffer||obj!=null&&obj.constructor!=null&&obj.constructor.name==="ArrayBuffer"&&typeof obj.byteLength==="number"}function isArrayBufferView(obj){return typeof ArrayBuffer.isView==="function"&&ArrayBuffer.isView(obj)}function numberIsNaN(obj){return obj!==obj}},{"base64-js":6,ieee754:12}],10:[function(require,module,exports){(function(Buffer){function isArray(arg){if(Array.isArray){return Array.isArray(arg)}return objectToString(arg)==="[object Array]"}exports.isArray=isArray;function isBoolean(arg){return typeof arg==="boolean"}exports.isBoolean=isBoolean;function isNull(arg){return arg===null}exports.isNull=isNull;function isNullOrUndefined(arg){return arg==null}exports.isNullOrUndefined=isNullOrUndefined;function isNumber(arg){return typeof arg==="number"}exports.isNumber=isNumber;function isString(arg){return typeof arg==="string"}exports.isString=isString;function isSymbol(arg){return typeof arg==="symbol"}exports.isSymbol=isSymbol;function isUndefined(arg){return arg===void 0}exports.isUndefined=isUndefined;function isRegExp(re){return objectToString(re)==="[object RegExp]"}exports.isRegExp=isRegExp;function isObject(arg){return typeof arg==="object"&&arg!==null}exports.isObject=isObject;function isDate(d){return objectToString(d)==="[object Date]"}exports.isDate=isDate;function isError(e){return objectToString(e)==="[object Error]"||e instanceof Error}exports.isError=isError;function isFunction(arg){return typeof arg==="function"}exports.isFunction=isFunction;function isPrimitive(arg){return arg===null||typeof arg==="boolean"||typeof arg==="number"||typeof arg==="string"||typeof arg==="symbol"||typeof arg==="undefined"}exports.isPrimitive=isPrimitive;exports.isBuffer=Buffer.isBuffer;function objectToString(o){return Object.prototype.toString.call(o)}}).call(this,{isBuffer:require("../../is-buffer/index.js")})},{"../../is-buffer/index.js":14}],11:[function(require,module,exports){function EventEmitter(){this._events=this._events||{};this._maxListeners=this._maxListeners||undefined}module.exports=EventEmitter;EventEmitter.EventEmitter=EventEmitter;EventEmitter.prototype._events=undefined;EventEmitter.prototype._maxListeners=undefined;EventEmitter.defaultMaxListeners=10;EventEmitter.prototype.setMaxListeners=function(n){if(!isNumber(n)||n<0||isNaN(n))throw TypeError("n must be a positive number");this._maxListeners=n;return this};EventEmitter.prototype.emit=function(type){var er,handler,len,args,i,listeners;if(!this._events)this._events={};if(type==="error"){if(!this._events.error||isObject(this._events.error)&&!this._events.error.length){er=arguments[1];if(er instanceof Error){throw er}else{var err=new Error('Uncaught, unspecified "error" event. ('+er+")");err.context=er;throw err}}}handler=this._events[type];if(isUndefined(handler))return false;if(isFunction(handler)){switch(arguments.length){case 1:handler.call(this);break;case 2:handler.call(this,arguments[1]);break;case 3:handler.call(this,arguments[1],arguments[2]);break;default:args=Array.prototype.slice.call(arguments,1);handler.apply(this,args)}}else if(isObject(handler)){args=Array.prototype.slice.call(arguments,1);listeners=handler.slice();len=listeners.length;for(i=0;i0&&this._events[type].length>m){this._events[type].warned=true;console.error("(node) warning: possible EventEmitter memory "+"leak detected. %d listeners added. "+"Use emitter.setMaxListeners() to increase limit.",this._events[type].length);if(typeof console.trace==="function"){console.trace()}}}return this};EventEmitter.prototype.on=EventEmitter.prototype.addListener;EventEmitter.prototype.once=function(type,listener){if(!isFunction(listener))throw TypeError("listener must be a function");var fired=false;function g(){this.removeListener(type,g);if(!fired){fired=true;listener.apply(this,arguments)}}g.listener=listener;this.on(type,g);return this};EventEmitter.prototype.removeListener=function(type,listener){var list,position,length,i;if(!isFunction(listener))throw TypeError("listener must be a function");if(!this._events||!this._events[type])return this;list=this._events[type];length=list.length;position=-1;if(list===listener||isFunction(list.listener)&&list.listener===listener){delete this._events[type];if(this._events.removeListener)this.emit("removeListener",type,listener)}else if(isObject(list)){for(i=length;i-- >0;){if(list[i]===listener||list[i].listener&&list[i].listener===listener){position=i;break}}if(position<0)return this;if(list.length===1){list.length=0;delete this._events[type]}else{list.splice(position,1)}if(this._events.removeListener)this.emit("removeListener",type,listener)}return this};EventEmitter.prototype.removeAllListeners=function(type){var key,listeners;if(!this._events)return this;if(!this._events.removeListener){if(arguments.length===0)this._events={};else if(this._events[type])delete this._events[type];return this}if(arguments.length===0){for(key in this._events){if(key==="removeListener")continue;this.removeAllListeners(key)}this.removeAllListeners("removeListener");this._events={};return this}listeners=this._events[type];if(isFunction(listeners)){this.removeListener(type,listeners)}else if(listeners){while(listeners.length)this.removeListener(type,listeners[listeners.length-1])}delete this._events[type];return this};EventEmitter.prototype.listeners=function(type){var ret;if(!this._events||!this._events[type])ret=[];else if(isFunction(this._events[type]))ret=[this._events[type]];else ret=this._events[type].slice();return ret};EventEmitter.prototype.listenerCount=function(type){if(this._events){var evlistener=this._events[type];if(isFunction(evlistener))return 1;else if(evlistener)return evlistener.length}return 0};EventEmitter.listenerCount=function(emitter,type){return emitter.listenerCount(type)};function isFunction(arg){return typeof arg==="function"}function isNumber(arg){return typeof arg==="number"}function isObject(arg){return typeof arg==="object"&&arg!==null}function isUndefined(arg){return arg===void 0}},{}],12:[function(require,module,exports){exports.read=function(buffer,offset,isLE,mLen,nBytes){var e,m;var eLen=nBytes*8-mLen-1;var eMax=(1<>1;var nBits=-7;var i=isLE?nBytes-1:0;var d=isLE?-1:1;var s=buffer[offset+i];i+=d;e=s&(1<<-nBits)-1;s>>=-nBits;nBits+=eLen;for(;nBits>0;e=e*256+buffer[offset+i],i+=d,nBits-=8){}m=e&(1<<-nBits)-1;e>>=-nBits;nBits+=mLen;for(;nBits>0;m=m*256+buffer[offset+i],i+=d,nBits-=8){}if(e===0){e=1-eBias}else if(e===eMax){return m?NaN:(s?-1:1)*Infinity}else{m=m+Math.pow(2,mLen);e=e-eBias}return(s?-1:1)*m*Math.pow(2,e-mLen)};exports.write=function(buffer,value,offset,isLE,mLen,nBytes){var e,m,c;var eLen=nBytes*8-mLen-1;var eMax=(1<>1;var rt=mLen===23?Math.pow(2,-24)-Math.pow(2,-77):0;var i=isLE?0:nBytes-1;var d=isLE?1:-1;var s=value<0||value===0&&1/value<0?1:0;value=Math.abs(value);if(isNaN(value)||value===Infinity){m=isNaN(value)?1:0;e=eMax}else{e=Math.floor(Math.log(value)/Math.LN2);if(value*(c=Math.pow(2,-e))<1){e--;c*=2}if(e+eBias>=1){value+=rt/c}else{value+=rt*Math.pow(2,1-eBias)}if(value*c>=2){e++;c/=2}if(e+eBias>=eMax){m=0;e=eMax}else if(e+eBias>=1){m=(value*c-1)*Math.pow(2,mLen);e=e+eBias}else{m=value*Math.pow(2,eBias-1)*Math.pow(2,mLen);e=0}}for(;mLen>=8;buffer[offset+i]=m&255,i+=d,m/=256,mLen-=8){}e=e<0;buffer[offset+i]=e&255,i+=d,e/=256,eLen-=8){}buffer[offset+i-d]|=s*128}},{}],13:[function(require,module,exports){if(typeof Object.create==="function"){module.exports=function inherits(ctor,superCtor){ctor.super_=superCtor;ctor.prototype=Object.create(superCtor.prototype,{constructor:{value:ctor,enumerable:false,writable:true,configurable:true}})}}else{module.exports=function inherits(ctor,superCtor){ctor.super_=superCtor;var TempCtor=function(){};TempCtor.prototype=superCtor.prototype;ctor.prototype=new TempCtor;ctor.prototype.constructor=ctor}}},{}],14:[function(require,module,exports){module.exports=function(obj){return obj!=null&&(isBuffer(obj)||isSlowBuffer(obj)||!!obj._isBuffer)};function isBuffer(obj){return!!obj.constructor&&typeof obj.constructor.isBuffer==="function"&&obj.constructor.isBuffer(obj)}function isSlowBuffer(obj){return typeof obj.readFloatLE==="function"&&typeof obj.slice==="function"&&isBuffer(obj.slice(0,0))}},{}],15:[function(require,module,exports){var toString={}.toString;module.exports=Array.isArray||function(arr){return toString.call(arr)=="[object Array]"}},{}],16:[function(require,module,exports){(function(process){"use strict";if(!process.version||process.version.indexOf("v0.")===0||process.version.indexOf("v1.")===0&&process.version.indexOf("v1.8.")!==0){module.exports=nextTick}else{module.exports=process.nextTick}function nextTick(fn,arg1,arg2,arg3){if(typeof fn!=="function"){throw new TypeError('"callback" argument must be a function')}var len=arguments.length;var args,i;switch(len){case 0:case 1:return process.nextTick(fn);case 2:return process.nextTick(function afterTickOne(){fn.call(null,arg1)});case 3:return process.nextTick(function afterTickTwo(){fn.call(null,arg1,arg2)});case 4:return process.nextTick(function afterTickThree(){fn.call(null,arg1,arg2,arg3)});default:args=new Array(len-1);i=0;while(i1){for(var i=1;i0){if(typeof chunk!=="string"&&!state.objectMode&&Object.getPrototypeOf(chunk)!==Buffer.prototype){chunk=_uint8ArrayToBuffer(chunk)}if(addToFront){if(state.endEmitted)stream.emit("error",new Error("stream.unshift() after end event"));else addChunk(stream,state,chunk,true)}else if(state.ended){stream.emit("error",new Error("stream.push() after EOF"))}else{state.reading=false;if(state.decoder&&!encoding){chunk=state.decoder.write(chunk);if(state.objectMode||chunk.length!==0)addChunk(stream,state,chunk,false);else maybeReadMore(stream,state)}else{addChunk(stream,state,chunk,false)}}}else if(!addToFront){state.reading=false}}return needMoreData(state)}function addChunk(stream,state,chunk,addToFront){if(state.flowing&&state.length===0&&!state.sync){stream.emit("data",chunk);stream.read(0)}else{state.length+=state.objectMode?1:chunk.length;if(addToFront)state.buffer.unshift(chunk);else state.buffer.push(chunk);if(state.needReadable)emitReadable(stream)}maybeReadMore(stream,state)}function chunkInvalid(state,chunk){var er;if(!_isUint8Array(chunk)&&typeof chunk!=="string"&&chunk!==undefined&&!state.objectMode){er=new TypeError("Invalid non-string/buffer chunk")}return er}function needMoreData(state){return!state.ended&&(state.needReadable||state.length=MAX_HWM){n=MAX_HWM}else{n--;n|=n>>>1;n|=n>>>2;n|=n>>>4;n|=n>>>8;n|=n>>>16;n++}return n}function howMuchToRead(n,state){if(n<=0||state.length===0&&state.ended)return 0;if(state.objectMode)return 1;if(n!==n){if(state.flowing&&state.length)return state.buffer.head.data.length;else return state.length}if(n>state.highWaterMark)state.highWaterMark=computeNewHighWaterMark(n);if(n<=state.length)return n;if(!state.ended){state.needReadable=true;return 0}return state.length}Readable.prototype.read=function(n){debug("read",n);n=parseInt(n,10);var state=this._readableState;var nOrig=n;if(n!==0)state.emittedReadable=false;if(n===0&&state.needReadable&&(state.length>=state.highWaterMark||state.ended)){debug("read: emitReadable",state.length,state.ended);if(state.length===0&&state.ended)endReadable(this);else emitReadable(this);return null}n=howMuchToRead(n,state);if(n===0&&state.ended){if(state.length===0)endReadable(this);return null}var doRead=state.needReadable;debug("need readable",doRead);if(state.length===0||state.length-n0)ret=fromList(n,state);else ret=null;if(ret===null){state.needReadable=true;n=0}else{state.length-=n}if(state.length===0){if(!state.ended)state.needReadable=true;if(nOrig!==n&&state.ended)endReadable(this)}if(ret!==null)this.emit("data",ret);return ret};function onEofChunk(stream,state){if(state.ended)return;if(state.decoder){var chunk=state.decoder.end();if(chunk&&chunk.length){state.buffer.push(chunk);state.length+=state.objectMode?1:chunk.length}}state.ended=true;emitReadable(stream)}function emitReadable(stream){var state=stream._readableState;state.needReadable=false;if(!state.emittedReadable){debug("emitReadable",state.flowing);state.emittedReadable=true;if(state.sync)processNextTick(emitReadable_,stream);else emitReadable_(stream)}}function emitReadable_(stream){debug("emit readable");stream.emit("readable");flow(stream)}function maybeReadMore(stream,state){if(!state.readingMore){state.readingMore=true;processNextTick(maybeReadMore_,stream,state)}}function maybeReadMore_(stream,state){var len=state.length;while(!state.reading&&!state.flowing&&!state.ended&&state.length1&&indexOf(state.pipes,dest)!==-1)&&!cleanedUp){debug("false write response, pause",src._readableState.awaitDrain);src._readableState.awaitDrain++;increasedAwaitDrain=true}src.pause()}}function onerror(er){debug("onerror",er);unpipe();dest.removeListener("error",onerror);if(EElistenerCount(dest,"error")===0)dest.emit("error",er)}prependListener(dest,"error",onerror);function onclose(){dest.removeListener("finish",onfinish);unpipe()}dest.once("close",onclose);function onfinish(){debug("onfinish");dest.removeListener("close",onclose);unpipe()}dest.once("finish",onfinish);function unpipe(){debug("unpipe");src.unpipe(dest)}dest.emit("pipe",src);if(!state.flowing){debug("pipe resume");src.resume()}return dest};function pipeOnDrain(src){return function(){var state=src._readableState;debug("pipeOnDrain",state.awaitDrain);if(state.awaitDrain)state.awaitDrain--;if(state.awaitDrain===0&&EElistenerCount(src,"data")){state.flowing=true;flow(src)}}}Readable.prototype.unpipe=function(dest){var state=this._readableState;var unpipeInfo={hasUnpiped:false};if(state.pipesCount===0)return this;if(state.pipesCount===1){if(dest&&dest!==state.pipes)return this;if(!dest)dest=state.pipes;state.pipes=null;state.pipesCount=0;state.flowing=false;if(dest)dest.emit("unpipe",this,unpipeInfo);return this}if(!dest){var dests=state.pipes;var len=state.pipesCount;state.pipes=null;state.pipesCount=0;state.flowing=false;for(var i=0;i=state.length){if(state.decoder)ret=state.buffer.join("");else if(state.buffer.length===1)ret=state.buffer.head.data;else ret=state.buffer.concat(state.length);state.buffer.clear()}else{ret=fromListPartial(n,state.buffer,state.decoder)}return ret}function fromListPartial(n,list,hasStrings){var ret;if(nstr.length?str.length:n;if(nb===str.length)ret+=str;else ret+=str.slice(0,n);n-=nb;if(n===0){if(nb===str.length){++c;if(p.next)list.head=p.next;else list.head=list.tail=null}else{list.head=p;p.data=str.slice(nb)}break}++c}list.length-=c;return ret}function copyFromBuffer(n,list){var ret=Buffer.allocUnsafe(n);var p=list.head;var c=1;p.data.copy(ret);n-=p.data.length;while(p=p.next){var buf=p.data;var nb=n>buf.length?buf.length:n;buf.copy(ret,ret.length-n,0,nb);n-=nb;if(n===0){if(nb===buf.length){++c;if(p.next)list.head=p.next;else list.head=list.tail=null}else{list.head=p;p.data=buf.slice(nb)}break}++c}list.length-=c;return ret}function endReadable(stream){var state=stream._readableState;if(state.length>0)throw new Error('"endReadable()" called on non-empty stream');if(!state.endEmitted){state.ended=true;processNextTick(endReadableNT,state,stream)}}function endReadableNT(state,stream){if(!state.endEmitted&&state.length===0){state.endEmitted=true;stream.readable=false;stream.emit("end")}}function forEach(xs,f){for(var i=0,l=xs.length;i-1?setImmediate:processNextTick;var Duplex;Writable.WritableState=WritableState;var util=require("core-util-is");util.inherits=require("inherits");var internalUtil={deprecate:require("util-deprecate")};var Stream=require("./internal/streams/stream");var Buffer=require("safe-buffer").Buffer;var OurUint8Array=global.Uint8Array||function(){};function _uint8ArrayToBuffer(chunk){return Buffer.from(chunk)}function _isUint8Array(obj){return Buffer.isBuffer(obj)||obj instanceof OurUint8Array}var destroyImpl=require("./internal/streams/destroy");util.inherits(Writable,Stream);function nop(){}function WritableState(options,stream){Duplex=Duplex||require("./_stream_duplex");options=options||{};this.objectMode=!!options.objectMode;if(stream instanceof Duplex)this.objectMode=this.objectMode||!!options.writableObjectMode;var hwm=options.highWaterMark;var defaultHwm=this.objectMode?16:16*1024;this.highWaterMark=hwm||hwm===0?hwm:defaultHwm;this.highWaterMark=Math.floor(this.highWaterMark);this.finalCalled=false;this.needDrain=false;this.ending=false;this.ended=false;this.finished=false;this.destroyed=false;var noDecode=options.decodeStrings===false;this.decodeStrings=!noDecode;this.defaultEncoding=options.defaultEncoding||"utf8";this.length=0;this.writing=false;this.corked=0;this.sync=true;this.bufferProcessing=false;this.onwrite=function(er){onwrite(stream,er)};this.writecb=null;this.writelen=0;this.bufferedRequest=null;this.lastBufferedRequest=null;this.pendingcb=0;this.prefinished=false;this.errorEmitted=false;this.bufferedRequestCount=0;this.corkedRequestsFree=new CorkedRequest(this)}WritableState.prototype.getBuffer=function getBuffer(){var current=this.bufferedRequest;var out=[];while(current){out.push(current);current=current.next}return out};(function(){try{Object.defineProperty(WritableState.prototype,"buffer",{get:internalUtil.deprecate(function(){return this.getBuffer()},"_writableState.buffer is deprecated. Use _writableState.getBuffer "+"instead.","DEP0003")})}catch(_){}})();var realHasInstance;if(typeof Symbol==="function"&&Symbol.hasInstance&&typeof Function.prototype[Symbol.hasInstance]==="function"){realHasInstance=Function.prototype[Symbol.hasInstance];Object.defineProperty(Writable,Symbol.hasInstance,{value:function(object){if(realHasInstance.call(this,object))return true;return object&&object._writableState instanceof WritableState}})}else{realHasInstance=function(object){return object instanceof this}}function Writable(options){Duplex=Duplex||require("./_stream_duplex");if(!realHasInstance.call(Writable,this)&&!(this instanceof Duplex)){return new Writable(options)}this._writableState=new WritableState(options,this);this.writable=true;if(options){if(typeof options.write==="function")this._write=options.write;if(typeof options.writev==="function")this._writev=options.writev;if(typeof options.destroy==="function")this._destroy=options.destroy;if(typeof options.final==="function")this._final=options.final}Stream.call(this)}Writable.prototype.pipe=function(){this.emit("error",new Error("Cannot pipe, not readable"))};function writeAfterEnd(stream,cb){var er=new Error("write after end");stream.emit("error",er);processNextTick(cb,er)}function validChunk(stream,state,chunk,cb){var valid=true;var er=false;if(chunk===null){er=new TypeError("May not write null values to stream")}else if(typeof chunk!=="string"&&chunk!==undefined&&!state.objectMode){er=new TypeError("Invalid non-string/buffer chunk")}if(er){stream.emit("error",er);processNextTick(cb,er);valid=false}return valid}Writable.prototype.write=function(chunk,encoding,cb){var state=this._writableState;var ret=false;var isBuf=_isUint8Array(chunk)&&!state.objectMode;if(isBuf&&!Buffer.isBuffer(chunk)){chunk=_uint8ArrayToBuffer(chunk)}if(typeof encoding==="function"){cb=encoding;encoding=null}if(isBuf)encoding="buffer";else if(!encoding)encoding=state.defaultEncoding;if(typeof cb!=="function")cb=nop;if(state.ended)writeAfterEnd(this,cb);else if(isBuf||validChunk(this,state,chunk,cb)){state.pendingcb++;ret=writeOrBuffer(this,state,isBuf,chunk,encoding,cb)}return ret};Writable.prototype.cork=function(){var state=this._writableState;state.corked++};Writable.prototype.uncork=function(){var state=this._writableState;if(state.corked){state.corked--;if(!state.writing&&!state.corked&&!state.finished&&!state.bufferProcessing&&state.bufferedRequest)clearBuffer(this,state)}};Writable.prototype.setDefaultEncoding=function setDefaultEncoding(encoding){if(typeof encoding==="string")encoding=encoding.toLowerCase();if(!(["hex","utf8","utf-8","ascii","binary","base64","ucs2","ucs-2","utf16le","utf-16le","raw"].indexOf((encoding+"").toLowerCase())>-1))throw new TypeError("Unknown encoding: "+encoding);this._writableState.defaultEncoding=encoding;return this};function decodeChunk(state,chunk,encoding){if(!state.objectMode&&state.decodeStrings!==false&&typeof chunk==="string"){chunk=Buffer.from(chunk,encoding)}return chunk}function writeOrBuffer(stream,state,isBuf,chunk,encoding,cb){if(!isBuf){var newChunk=decodeChunk(state,chunk,encoding);if(chunk!==newChunk){isBuf=true;encoding="buffer";chunk=newChunk}}var len=state.objectMode?1:chunk.length;state.length+=len;var ret=state.length0)this.tail.next=entry;else this.head=entry;this.tail=entry;++this.length};BufferList.prototype.unshift=function unshift(v){var entry={data:v,next:this.head};if(this.length===0)this.tail=entry;this.head=entry;++this.length};BufferList.prototype.shift=function shift(){if(this.length===0)return;var ret=this.head.data;if(this.length===1)this.head=this.tail=null;else this.head=this.head.next;--this.length;return ret};BufferList.prototype.clear=function clear(){this.head=this.tail=null;this.length=0};BufferList.prototype.join=function join(s){if(this.length===0)return"";var p=this.head;var ret=""+p.data;while(p=p.next){ret+=s+p.data}return ret};BufferList.prototype.concat=function concat(n){if(this.length===0)return Buffer.alloc(0);if(this.length===1)return this.head.data;var ret=Buffer.allocUnsafe(n>>>0);var p=this.head;var i=0;while(p){copyBuffer(p.data,ret,i);i+=p.data.length;p=p.next}return ret};return BufferList}()},{"safe-buffer":28}],25:[function(require,module,exports){"use strict";var processNextTick=require("process-nextick-args");function destroy(err,cb){var _this=this;var readableDestroyed=this._readableState&&this._readableState.destroyed;var writableDestroyed=this._writableState&&this._writableState.destroyed;if(readableDestroyed||writableDestroyed){if(cb){cb(err)}else if(err&&(!this._writableState||!this._writableState.errorEmitted)){processNextTick(emitErrorNT,this,err)}return}if(this._readableState){this._readableState.destroyed=true}if(this._writableState){this._writableState.destroyed=true}this._destroy(err||null,function(err){if(!cb&&err){processNextTick(emitErrorNT,_this,err);if(_this._writableState){_this._writableState.errorEmitted=true}}else if(cb){cb(err)}})}function undestroy(){if(this._readableState){this._readableState.destroyed=false;this._readableState.reading=false;this._readableState.ended=false;this._readableState.endEmitted=false}if(this._writableState){this._writableState.destroyed=false;this._writableState.ended=false;this._writableState.ending=false;this._writableState.finished=false;this._writableState.errorEmitted=false}}function emitErrorNT(self,err){self.emit("error",err)}module.exports={destroy:destroy,undestroy:undestroy}},{"process-nextick-args":16}],26:[function(require,module,exports){module.exports=require("events").EventEmitter},{events:11}],27:[function(require,module,exports){exports=module.exports=require("./lib/_stream_readable.js");exports.Stream=exports;exports.Readable=exports;exports.Writable=require("./lib/_stream_writable.js");exports.Duplex=require("./lib/_stream_duplex.js");exports.Transform=require("./lib/_stream_transform.js");exports.PassThrough=require("./lib/_stream_passthrough.js")},{"./lib/_stream_duplex.js":19,"./lib/_stream_passthrough.js":20,"./lib/_stream_readable.js":21,"./lib/_stream_transform.js":22,"./lib/_stream_writable.js":23}],28:[function(require,module,exports){var buffer=require("buffer");var Buffer=buffer.Buffer;function copyProps(src,dst){for(var key in src){dst[key]=src[key]}}if(Buffer.from&&Buffer.alloc&&Buffer.allocUnsafe&&Buffer.allocUnsafeSlow){module.exports=buffer}else{copyProps(buffer,exports);exports.Buffer=SafeBuffer}function SafeBuffer(arg,encodingOrOffset,length){return Buffer(arg,encodingOrOffset,length)}copyProps(Buffer,SafeBuffer);SafeBuffer.from=function(arg,encodingOrOffset,length){if(typeof arg==="number"){throw new TypeError("Argument must not be a number")}return Buffer(arg,encodingOrOffset,length)};SafeBuffer.alloc=function(size,fill,encoding){if(typeof size!=="number"){throw new TypeError("Argument must be a number")}var buf=Buffer(size);if(fill!==undefined){if(typeof encoding==="string"){buf.fill(fill,encoding)}else{buf.fill(fill)}}else{buf.fill(0)}return buf};SafeBuffer.allocUnsafe=function(size){if(typeof size!=="number"){throw new TypeError("Argument must be a number")}return Buffer(size)};SafeBuffer.allocUnsafeSlow=function(size){if(typeof size!=="number"){throw new TypeError("Argument must be a number")}return buffer.SlowBuffer(size)}},{buffer:9}],29:[function(require,module,exports){"use strict";var Buffer=require("safe-buffer").Buffer;var isEncoding=Buffer.isEncoding||function(encoding){encoding=""+encoding;switch(encoding&&encoding.toLowerCase()){case"hex":case"utf8":case"utf-8":case"ascii":case"binary":case"base64":case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":case"raw":return true;default:return false}};function _normalizeEncoding(enc){if(!enc)return"utf8";var retried;while(true){switch(enc){case"utf8":case"utf-8":return"utf8";case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return"utf16le";case"latin1":case"binary":return"latin1";case"base64":case"ascii":case"hex":return enc;default:if(retried)return;enc=(""+enc).toLowerCase();retried=true}}}function normalizeEncoding(enc){var nenc=_normalizeEncoding(enc);if(typeof nenc!=="string"&&(Buffer.isEncoding===isEncoding||!isEncoding(enc)))throw new Error("Unknown encoding: "+enc);return nenc||enc}exports.StringDecoder=StringDecoder;function StringDecoder(encoding){this.encoding=normalizeEncoding(encoding);var nb;switch(this.encoding){case"utf16le":this.text=utf16Text;this.end=utf16End;nb=4;break;case"utf8":this.fillLast=utf8FillLast;nb=4;break;case"base64":this.text=base64Text;this.end=base64End;nb=3;break;default:this.write=simpleWrite;this.end=simpleEnd;return}this.lastNeed=0;this.lastTotal=0;this.lastChar=Buffer.allocUnsafe(nb)}StringDecoder.prototype.write=function(buf){if(buf.length===0)return"";var r;var i;if(this.lastNeed){r=this.fillLast(buf);if(r===undefined)return"";i=this.lastNeed;this.lastNeed=0}else{i=0}if(i>5===6)return 2;else if(byte>>4===14)return 3;else if(byte>>3===30)return 4;return-1}function utf8CheckIncomplete(self,buf,i){var j=buf.length-1;if(j=0){if(nb>0)self.lastNeed=nb-1;return nb}if(--j=0){if(nb>0)self.lastNeed=nb-2;return nb}if(--j=0){if(nb>0){if(nb===2)nb=0;else self.lastNeed=nb-3}return nb}return 0}function utf8CheckExtraBytes(self,buf,p){if((buf[0]&192)!==128){self.lastNeed=0;return"�".repeat(p)}if(self.lastNeed>1&&buf.length>1){if((buf[1]&192)!==128){self.lastNeed=1;return"�".repeat(p+1)}if(self.lastNeed>2&&buf.length>2){if((buf[2]&192)!==128){self.lastNeed=2;return"�".repeat(p+2)}}}}function utf8FillLast(buf){var p=this.lastTotal-this.lastNeed;var r=utf8CheckExtraBytes(this,buf,p);if(r!==undefined)return r;if(this.lastNeed<=buf.length){buf.copy(this.lastChar,p,0,this.lastNeed);return this.lastChar.toString(this.encoding,0,this.lastTotal)}buf.copy(this.lastChar,p,0,buf.length);this.lastNeed-=buf.length}function utf8Text(buf,i){var total=utf8CheckIncomplete(this,buf,i);if(!this.lastNeed)return buf.toString("utf8",i);this.lastTotal=total;var end=buf.length-(total-this.lastNeed);buf.copy(this.lastChar,0,end);return buf.toString("utf8",i,end)}function utf8End(buf){var r=buf&&buf.length?this.write(buf):"";if(this.lastNeed)return r+"�".repeat(this.lastTotal-this.lastNeed);return r}function utf16Text(buf,i){if((buf.length-i)%2===0){var r=buf.toString("utf16le",i);if(r){var c=r.charCodeAt(r.length-1);if(c>=55296&&c<=56319){this.lastNeed=2;this.lastTotal=4;this.lastChar[0]=buf[buf.length-2];this.lastChar[1]=buf[buf.length-1];return r.slice(0,-1)}}return r}this.lastNeed=1;this.lastTotal=2;this.lastChar[0]=buf[buf.length-1];return buf.toString("utf16le",i,buf.length-1)}function utf16End(buf){var r=buf&&buf.length?this.write(buf):"";if(this.lastNeed){var end=this.lastTotal-this.lastNeed;return r+this.lastChar.toString("utf16le",0,end)}return r}function base64Text(buf,i){var n=(buf.length-i)%3;if(n===0)return buf.toString("base64",i);this.lastNeed=3-n;this.lastTotal=3;if(n===1){this.lastChar[0]=buf[buf.length-1]}else{this.lastChar[0]=buf[buf.length-2];this.lastChar[1]=buf[buf.length-1]}return buf.toString("base64",i,buf.length-n)}function base64End(buf){var r=buf&&buf.length?this.write(buf):"";if(this.lastNeed)return r+this.lastChar.toString("base64",0,3-this.lastNeed);return r}function simpleWrite(buf){return buf.toString(this.encoding)}function simpleEnd(buf){return buf&&buf.length?this.write(buf):""}},{"safe-buffer":28}],30:[function(require,module,exports){(function(global){module.exports=deprecate;function deprecate(fn,msg){if(config("noDeprecation")){return fn}var warned=false;function deprecated(){if(!warned){if(config("throwDeprecation")){throw new Error(msg)}else if(config("traceDeprecation")){console.trace(msg)}else{console.warn(msg)}warned=true}return fn.apply(this,arguments)}return deprecated}function config(name){try{if(!global.localStorage)return false}catch(_){return false}var val=global.localStorage[name];if(null==val)return false;return String(val).toLowerCase()==="true"}}).call(this,typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{}],31:[function(require,module,exports){arguments[4][13][0].apply(exports,arguments)},{dup:13}],32:[function(require,module,exports){module.exports=function isBuffer(arg){return arg&&typeof arg==="object"&&typeof arg.copy==="function"&&typeof arg.fill==="function"&&typeof arg.readUInt8==="function"}},{}],33:[function(require,module,exports){(function(process,global){var formatRegExp=/%[sdj%]/g;exports.format=function(f){if(!isString(f)){var objects=[];for(var i=0;i=len)return x;switch(x){case"%s":return String(args[i++]);case"%d":return Number(args[i++]);case"%j":try{return JSON.stringify(args[i++])}catch(_){return"[Circular]"}default:return x}});for(var x=args[i];i=3)ctx.depth=arguments[2];if(arguments.length>=4)ctx.colors=arguments[3];if(isBoolean(opts)){ctx.showHidden=opts}else if(opts){exports._extend(ctx,opts)}if(isUndefined(ctx.showHidden))ctx.showHidden=false;if(isUndefined(ctx.depth))ctx.depth=2;if(isUndefined(ctx.colors))ctx.colors=false;if(isUndefined(ctx.customInspect))ctx.customInspect=true;if(ctx.colors)ctx.stylize=stylizeWithColor;return formatValue(ctx,obj,ctx.depth)}exports.inspect=inspect;inspect.colors={bold:[1,22],italic:[3,23],underline:[4,24],inverse:[7,27],white:[37,39],grey:[90,39],black:[30,39],blue:[34,39],cyan:[36,39],green:[32,39],magenta:[35,39],red:[31,39],yellow:[33,39]};inspect.styles={special:"cyan",number:"yellow",boolean:"yellow",undefined:"grey",null:"bold",string:"green",date:"magenta",regexp:"red"};function stylizeWithColor(str,styleType){var style=inspect.styles[styleType];if(style){return"["+inspect.colors[style][0]+"m"+str+"["+inspect.colors[style][1]+"m"}else{return str}}function stylizeNoColor(str,styleType){return str}function arrayToHash(array){var hash={};array.forEach(function(val,idx){hash[val]=true});return hash}function formatValue(ctx,value,recurseTimes){if(ctx.customInspect&&value&&isFunction(value.inspect)&&value.inspect!==exports.inspect&&!(value.constructor&&value.constructor.prototype===value)){var ret=value.inspect(recurseTimes,ctx);if(!isString(ret)){ret=formatValue(ctx,ret,recurseTimes)}return ret}var primitive=formatPrimitive(ctx,value);if(primitive){return primitive}var keys=Object.keys(value);var visibleKeys=arrayToHash(keys);if(ctx.showHidden){keys=Object.getOwnPropertyNames(value)}if(isError(value)&&(keys.indexOf("message")>=0||keys.indexOf("description")>=0)){return formatError(value)}if(keys.length===0){if(isFunction(value)){var name=value.name?": "+value.name:"";return ctx.stylize("[Function"+name+"]","special")}if(isRegExp(value)){return ctx.stylize(RegExp.prototype.toString.call(value),"regexp")}if(isDate(value)){return ctx.stylize(Date.prototype.toString.call(value),"date")}if(isError(value)){return formatError(value)}}var base="",array=false,braces=["{","}"];if(isArray(value)){array=true;braces=["[","]"]}if(isFunction(value)){var n=value.name?": "+value.name:"";base=" [Function"+n+"]"}if(isRegExp(value)){base=" "+RegExp.prototype.toString.call(value)}if(isDate(value)){base=" "+Date.prototype.toUTCString.call(value)}if(isError(value)){base=" "+formatError(value)}if(keys.length===0&&(!array||value.length==0)){return braces[0]+base+braces[1]}if(recurseTimes<0){if(isRegExp(value)){return ctx.stylize(RegExp.prototype.toString.call(value),"regexp")}else{return ctx.stylize("[Object]","special")}}ctx.seen.push(value);var output;if(array){output=formatArray(ctx,value,recurseTimes,visibleKeys,keys)}else{output=keys.map(function(key){return formatProperty(ctx,value,recurseTimes,visibleKeys,key,array)})}ctx.seen.pop();return reduceToSingleString(output,base,braces)}function formatPrimitive(ctx,value){if(isUndefined(value))return ctx.stylize("undefined","undefined");if(isString(value)){var simple="'"+JSON.stringify(value).replace(/^"|"$/g,"").replace(/'/g,"\\'").replace(/\\"/g,'"')+"'";return ctx.stylize(simple,"string")}if(isNumber(value))return ctx.stylize(""+value,"number");if(isBoolean(value))return ctx.stylize(""+value,"boolean");if(isNull(value))return ctx.stylize("null","null")}function formatError(value){return"["+Error.prototype.toString.call(value)+"]"}function formatArray(ctx,value,recurseTimes,visibleKeys,keys){var output=[];for(var i=0,l=value.length;i-1){if(array){str=str.split("\n").map(function(line){return" "+line}).join("\n").substr(2)}else{str="\n"+str.split("\n").map(function(line){return" "+line}).join("\n")}}}else{str=ctx.stylize("[Circular]","special")}}if(isUndefined(name)){if(array&&key.match(/^\d+$/)){return str}name=JSON.stringify(""+key);if(name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)){name=name.substr(1,name.length-2);name=ctx.stylize(name,"name")}else{name=name.replace(/'/g,"\\'").replace(/\\"/g,'"').replace(/(^"|"$)/g,"'");name=ctx.stylize(name,"string")}}return name+": "+str}function reduceToSingleString(output,base,braces){var numLinesEst=0;var length=output.reduce(function(prev,cur){numLinesEst++;if(cur.indexOf("\n")>=0)numLinesEst++;return prev+cur.replace(/\u001b\[\d\d?m/g,"").length+1},0);if(length>60){return braces[0]+(base===""?"":base+"\n ")+" "+output.join(",\n ")+" "+braces[1]}return braces[0]+base+" "+output.join(", ")+" "+braces[1]}function isArray(ar){return Array.isArray(ar)}exports.isArray=isArray;function isBoolean(arg){return typeof arg==="boolean"}exports.isBoolean=isBoolean;function isNull(arg){return arg===null}exports.isNull=isNull;function isNullOrUndefined(arg){return arg==null}exports.isNullOrUndefined=isNullOrUndefined;function isNumber(arg){return typeof arg==="number"}exports.isNumber=isNumber;function isString(arg){return typeof arg==="string"}exports.isString=isString;function isSymbol(arg){return typeof arg==="symbol"}exports.isSymbol=isSymbol;function isUndefined(arg){return arg===void 0}exports.isUndefined=isUndefined;function isRegExp(re){return isObject(re)&&objectToString(re)==="[object RegExp]"}exports.isRegExp=isRegExp;function isObject(arg){return typeof arg==="object"&&arg!==null}exports.isObject=isObject;function isDate(d){return isObject(d)&&objectToString(d)==="[object Date]"}exports.isDate=isDate;function isError(e){return isObject(e)&&(objectToString(e)==="[object Error]"||e instanceof Error)}exports.isError=isError;function isFunction(arg){return typeof arg==="function"}exports.isFunction=isFunction;function isPrimitive(arg){return arg===null||typeof arg==="boolean"||typeof arg==="number"||typeof arg==="string"||typeof arg==="symbol"||typeof arg==="undefined"}exports.isPrimitive=isPrimitive;exports.isBuffer=require("./support/isBuffer");function objectToString(o){return Object.prototype.toString.call(o)}function pad(n){return n<10?"0"+n.toString(10):n.toString(10)}var months=["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];function timestamp(){var d=new Date;var time=[pad(d.getHours()),pad(d.getMinutes()),pad(d.getSeconds())].join(":");return[d.getDate(),months[d.getMonth()],time].join(" ")}exports.log=function(){console.log("%s - %s",timestamp(),exports.format.apply(exports,arguments))};exports.inherits=require("inherits");exports._extend=function(origin,add){if(!add||!isObject(add))return origin;var keys=Object.keys(add);var i=keys.length;while(i--){origin[keys[i]]=add[keys[i]]}return origin};function hasOwnProperty(obj,prop){return Object.prototype.hasOwnProperty.call(obj,prop)}}).call(this,require("_process"),typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{"./support/isBuffer":32,_process:17,inherits:31}]},{},[1])(1)}); \ No newline at end of file +(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.msgpack5=f()}})(function(){var define,module,exports;return function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i=0,"must have a non-negative type");assert(decode,"must have a decode function");decodingTypes.set(type,decode);return this}function register(type,constructor,encode,decode){assert(constructor,"must have a constructor");assert(encode,"must have an encode function");assert(type>=0,"must have a non-negative type");assert(decode,"must have a decode function");function check(obj){return obj instanceof constructor}function reEncode(obj){var buf=bl();var header=Buffer.allocUnsafe(1);header.writeInt8(type,0);buf.append(header);buf.append(encode(obj));return buf}this.registerEncoder(check,reEncode);this.registerDecoder(type,decode);return this}return{encode:buildEncode(encodingTypes,options),decode:buildDecode(decodingTypes,options),register:register,registerEncoder:registerEncoder,registerDecoder:registerDecoder,encoder:streams.encoder,decoder:streams.decoder,buffer:true,type:"msgpack5",IncompleteBufferError:IncompleteBufferError}}module.exports=msgpack},{"./lib/codecs/DateCodec":2,"./lib/decoder":3,"./lib/encoder":4,"./lib/helpers.js":5,"./lib/streams":6,assert:7,bl:12,"safe-buffer":35}],2:[function(require,module,exports){(function(Buffer){(function(){const type=-1;function encode(dt){if(dt===null){return}var millis=dt*1;var seconds=Math.floor(millis/1e3);var nanos=(millis-seconds*1e3)*1e6;if(seconds<0||seconds>17179869184){const encoded=Buffer.allocUnsafe(13);encoded[0]=-1;encoded.writeUInt32BE(nanos,1);var hex="";if(seconds>=0){const padhex="0000000000000000";hex=seconds.toString(16);hex=padhex.slice(0,hex.length*-1)+hex}else{var bin=(seconds*-1).toString(2);var i=bin.length-1;while(bin[i]==="0"){i--}bin=bin.slice(0,i).split("").map(function(bit){return bit==="1"?0:1}).join("")+bin.slice(i,bin.length);const pad64="1111111111111111111111111111111111111111111111111111111111111111";bin=pad64.slice(0,bin.length*-1)+bin;bin.match(/.{1,8}/g).forEach(function(byte){byte=parseInt(byte,2).toString(16);if(byte.length===1){byte="0"+byte}hex+=byte})}encoded.write(hex,5,"hex");return encoded}else if(nanos||seconds>4294967295){const encoded=Buffer.allocUnsafe(9);encoded[0]=-1;var upperNanos=nanos*4;var upperSeconds=seconds/Math.pow(2,32);var upper=upperNanos+upperSeconds&4294967295;var lower=seconds&4294967295;encoded.writeInt32BE(upper,1);encoded.writeInt32BE(lower,5);return encoded}else{const encoded=Buffer.allocUnsafe(5);encoded[0]=-1;encoded.writeUInt32BE(Math.floor(millis/1e3),1);return encoded}}function check(obj){return typeof obj.getDate==="function"}function decode(buf){var seconds;var nanoseconds=0;switch(buf.length){case 4:seconds=buf.readUInt32BE(0);break;case 8:var upper=buf.readUInt32BE(0);var lower=buf.readUInt32BE(4);nanoseconds=upper/4;seconds=(upper&3)*Math.pow(2,32)+lower;break;case 12:var hex=buf.toString("hex",4,12);if(parseInt(buf.toString("hex",4,6),16)&128){var bin="";const pad8="00000000";hex.match(/.{1,2}/g).forEach(function(byte){byte=parseInt(byte,16).toString(2);byte=pad8.slice(0,byte.length*-1)+byte;bin+=byte});seconds=-1*parseInt(bin.split("").map(function(bit){return bit==="1"?0:1}).join(""),2)-1}else{seconds=parseInt(hex,16)}nanoseconds=buf.readUInt32BE(0)}var millis=seconds*1e3+Math.round(nanoseconds/1e6);return new Date(millis)}module.exports={check:check,type:type,encode:encode,decode:decode}}).call(this)}).call(this,require("buffer").Buffer)},{buffer:14}],3:[function(require,module,exports){"use strict";var bl=require("bl");var IncompleteBufferError=require("./helpers.js").IncompleteBufferError;const SIZES={196:2,197:3,198:5,199:3,200:4,201:6,202:5,203:9,204:2,205:3,206:5,207:9,208:2,209:3,210:5,211:9,212:3,213:4,214:6,215:10,216:18,217:2,218:3,219:5,222:3,220:3,221:5};function isValidDataSize(dataLength,bufLength,headerLength){return bufLength>=headerLength+dataLength}module.exports=function buildDecode(decodingTypes,options){return decode;function decode(buf){if(!(buf instanceof bl)){buf=bl().append(buf)}var result=tryDecode(buf,0);if(!result)throw new IncompleteBufferError;buf.consume(result[1]);return result[0]}function tryDecode(buf,initialOffset){if(buf.length<=initialOffset)return null;const bufLength=buf.length-initialOffset;var offset=initialOffset;const first=buf.readUInt8(offset);offset+=1;const size=SIZES[first]||-1;if(bufLengthfirst>=start&&first<=end;if(first<128)return[first,1];if((first&240)===128){const length=first&15;const headerSize=offset-initialOffset;return decodeMap(buf,offset,length,headerSize,options)}if((first&240)===144){const length=first&15;const headerSize=offset-initialOffset;return decodeArray(buf,offset,length,headerSize)}if((first&224)===160){const length=first&31;if(!isValidDataSize(length,bufLength,1))return null;const result=buf.toString("utf8",offset,offset+length);return[result,length+1]}if(inRange(192,195))return decodeConstants(first);if(inRange(196,198)){const length=buf.readUIntBE(offset,size-1);offset+=size-1;if(!isValidDataSize(length,bufLength,size))return null;const result=buf.slice(offset,offset+length);return[result,size+length]}if(inRange(199,201)){const length=buf.readUIntBE(offset,size-2);offset+=size-2;const type=buf.readInt8(offset);offset+=1;if(!isValidDataSize(length,bufLength,size))return null;return decodeExt(buf,offset,type,length,size)}if(inRange(202,203))return decodeFloat(buf,offset,size-1);if(inRange(204,207))return decodeUnsignedInt(buf,offset,size-1);if(inRange(208,211))return decodeSigned(buf,offset,size-1);if(inRange(212,216)){var type=buf.readInt8(offset);offset+=1;return decodeExt(buf,offset,type,size-2,2)}if(inRange(217,219)){const length=buf.readUIntBE(offset,size-1);offset+=size-1;if(!isValidDataSize(length,bufLength,size))return null;const result=buf.toString("utf8",offset,offset+length);return[result,size+length]}if(inRange(220,221)){const length=buf.readUIntBE(offset,size-1);offset+=size-1;return decodeArray(buf,offset,length,size)}if(inRange(222,223)){let length;switch(first){case 222:length=buf.readUInt16BE(offset);offset+=2;return decodeMap(buf,offset,length,3,options);case 223:length=buf.readUInt32BE(offset);offset+=4;return decodeMap(buf,offset,length,5,options)}}if(first>=224)return[first-256,1];throw new Error("not implemented yet")}function decodeArray(buf,initialOffset,length,headerLength){var offset=initialOffset;const result=[];var i=0;while(i++=offset;i--){var v=(buf[i]^255)+carry;buf[i]=v&255;carry=v>>8}}var hi=buf.readUInt32BE(offset+0);var lo=buf.readUInt32BE(offset+4);return(hi*4294967296+lo)*(negate?-1:+1)}function decodeUnsignedInt(buf,offset,size){const maxOffset=offset+size;var result=0;while(offset{acc.push(encode(item))});if(acc.length!==array.length+1){throw new Error("Sparse arrays are not encodable in msgpack")}return bl(acc)}function encodeMap(map,options,encode){const acc=[getHeader(map.size,128,222)];const keys=[...map.keys()];if(!options.preferMap){if(keys.every(item=>typeof item==="string")){console.warn("Map with string only keys will be deserialized as an object!")}}keys.forEach(key=>{acc.push(encode(key),encode(map.get(key)))});return bl(acc)}function encodeObject(obj,options,encode){var keys=[];for(let key in obj){if(obj.hasOwnProperty(key)&&obj[key]!==undefined&&typeof obj[key]!=="function"){keys.push(key)}}const acc=[getHeader(keys.length,128,222)];if(options.sortKeys)keys.sort();keys.forEach(key=>{acc.push(encode(key),encode(obj[key]))});return bl(acc)}function write64BitUint(buf,offset,num){var lo=num%4294967296;var hi=Math.floor(num/4294967296);buf.writeUInt32BE(hi,offset+0);buf.writeUInt32BE(lo,offset+4)}function write64BitInt(buf,offset,num){var negate=num<0;num=Math.abs(num);write64BitUint(buf,offset,num);if(negate)negate64BitInt(buf,offset)}function negate64BitInt(buf,offset){var i=offset+8;while(i-- >offset){if(buf[i]===0)continue;buf[i]=(buf[i]^255)+1;break}while(i-- >offset){buf[i]=buf[i]^255}}const fround=Math.fround;function encodeFloat(obj,forceFloat64){var buf;if(forceFloat64||!fround||!Object.is(fround(obj),obj)){buf=Buffer.allocUnsafe(9);buf[0]=203;buf.writeDoubleBE(obj,1)}else{buf=Buffer.allocUnsafe(5);buf[0]=202;buf.writeFloatBE(obj,1)}return buf}function encodeExt(obj,encodingTypes){const codec=encodingTypes.find(codec=>codec.check(obj));if(!codec)return null;const encoded=codec.encode(obj);if(!encoded)return null;return bl([getExtHeader(encoded.length-1),encoded])}function getExtHeader(length){if(length===1)return Buffer.from([212]);if(length===2)return Buffer.from([213]);if(length===4)return Buffer.from([214]);if(length===8)return Buffer.from([215]);if(length===16)return Buffer.from([216]);if(length<256)return Buffer.from([199,length]);if(length<65536)return Buffer.from([200,length>>8,length&255]);return Buffer.from([201,length>>24,length>>16&255,length>>8&255,length&255])}function getHeader(length,tag1,tag2){if(length<16)return Buffer.from([tag1|length]);const size=length<65536?2:4;var buf=Buffer.allocUnsafe(1+size);buf[0]=length<65536?tag2:tag2+1;buf.writeUIntBE(length,1,size);return buf}function encodeString(obj,options){const len=Buffer.byteLength(obj);var buf;if(len<32){buf=Buffer.allocUnsafe(1+len);buf[0]=160|len;if(len>0){buf.write(obj,1)}}else if(len<=255&&!options.compatibilityMode){buf=Buffer.allocUnsafe(2+len);buf[0]=217;buf[1]=len;buf.write(obj,2)}else if(len<=65535){buf=Buffer.allocUnsafe(3+len);buf[0]=218;buf.writeUInt16BE(len,1);buf.write(obj,3)}else{buf=Buffer.allocUnsafe(5+len);buf[0]=219;buf.writeUInt32BE(len,1);buf.write(obj,5)}return buf}function getBufferHeader(length){var header;if(length<=255){header=Buffer.allocUnsafe(2);header[0]=196;header[1]=length}else if(length<=65535){header=Buffer.allocUnsafe(3);header[0]=197;header.writeUInt16BE(length,1)}else{header=Buffer.allocUnsafe(5);header[0]=198;header.writeUInt32BE(length,1)}return header}function encodeNumber(obj,options){var buf;if(isFloat(obj))return encodeFloat(obj,options.forceFloat64);if(Math.abs(obj)>9007199254740991){return encodeFloat(obj,true)}if(obj>=0){if(obj<128){return Buffer.from([obj])}else if(obj<256){return Buffer.from([204,obj])}else if(obj<65536){return Buffer.from([205,255&obj>>8,255&obj])}else if(obj<=4294967295){return Buffer.from([206,255&obj>>24,255&obj>>16,255&obj>>8,255&obj])}else if(obj<=9007199254740991){buf=Buffer.allocUnsafe(9);buf[0]=207;write64BitUint(buf,1,obj)}}else{if(obj>=-32){buf=Buffer.allocUnsafe(1);buf[0]=256+obj}else if(obj>=-128){buf=Buffer.allocUnsafe(2);buf[0]=208;buf.writeInt8(obj,1)}else if(obj>=-32768){buf=Buffer.allocUnsafe(3);buf[0]=209;buf.writeInt16BE(obj,1)}else if(obj>-214748365){buf=Buffer.allocUnsafe(5);buf[0]=210;buf.writeInt32BE(obj,1)}else if(obj>=-9007199254740991){buf=Buffer.allocUnsafe(9);buf[0]=211;write64BitInt(buf,1,obj)}}return buf}},{"./helpers.js":5,bl:12,"safe-buffer":35}],5:[function(require,module,exports){"use strict";var util=require("util");exports.IncompleteBufferError=IncompleteBufferError;function IncompleteBufferError(message){Error.call(this);if(Error.captureStackTrace){Error.captureStackTrace(this,this.constructor)}this.name=this.constructor.name;this.message=message||"unable to decode"}util.inherits(IncompleteBufferError,Error);exports.isFloat=function isFloat(n){return n%1!==0}},{util:40}],6:[function(require,module,exports){"use strict";var Transform=require("readable-stream").Transform;var inherits=require("inherits");var bl=require("bl");function Base(opts){opts=opts||{};opts.objectMode=true;opts.highWaterMark=16;Transform.call(this,opts);this._msgpack=opts.msgpack}inherits(Base,Transform);function Encoder(opts){if(!(this instanceof Encoder)){opts=opts||{};opts.msgpack=this;return new Encoder(opts)}Base.call(this,opts);this._wrap="wrap"in opts&&opts.wrap}inherits(Encoder,Base);Encoder.prototype._transform=function(obj,enc,done){var buf=null;try{buf=this._msgpack.encode(this._wrap?obj.value:obj).slice(0)}catch(err){this.emit("error",err);return done()}this.push(buf);done()};function Decoder(opts){if(!(this instanceof Decoder)){opts=opts||{};opts.msgpack=this;return new Decoder(opts)}Base.call(this,opts);this._chunks=bl();this._wrap="wrap"in opts&&opts.wrap}inherits(Decoder,Base);Decoder.prototype._transform=function(buf,enc,done){if(buf){this._chunks.append(buf)}try{var result=this._msgpack.decode(this._chunks);if(this._wrap){result={value:result}}this.push(result)}catch(err){if(err instanceof this._msgpack.IncompleteBufferError){done()}else{this.emit("error",err)}return}if(this._chunks.length>0){this._transform(null,enc,done)}else{done()}};module.exports.decoder=Decoder;module.exports.encoder=Encoder},{bl:12,inherits:18,"readable-stream":34}],7:[function(require,module,exports){(function(global){(function(){"use strict";var objectAssign=require("object-assign");function compare(a,b){if(a===b){return 0}var x=a.length;var y=b.length;for(var i=0,len=Math.min(x,y);i=0){var next_line=out.indexOf("\n",idx+1);out=out.substring(next_line+1)}this.stack=out}}};util.inherits(assert.AssertionError,Error);function truncate(s,n){if(typeof s==="string"){return s.length=0;i--){if(ka[i]!==kb[i])return false}for(i=ka.length-1;i>=0;i--){key=ka[i];if(!_deepEqual(a[key],b[key],strict,actualVisitedObjects))return false}return true}assert.notDeepEqual=function notDeepEqual(actual,expected,message){if(_deepEqual(actual,expected,false)){fail(actual,expected,message,"notDeepEqual",assert.notDeepEqual)}};assert.notDeepStrictEqual=notDeepStrictEqual;function notDeepStrictEqual(actual,expected,message){if(_deepEqual(actual,expected,true)){fail(actual,expected,message,"notDeepStrictEqual",notDeepStrictEqual)}}assert.strictEqual=function strictEqual(actual,expected,message){if(actual!==expected){fail(actual,expected,message,"===",assert.strictEqual)}};assert.notStrictEqual=function notStrictEqual(actual,expected,message){if(actual===expected){fail(actual,expected,message,"!==",assert.notStrictEqual)}};function expectedException(actual,expected){if(!actual||!expected){return false}if(Object.prototype.toString.call(expected)=="[object RegExp]"){return expected.test(actual)}try{if(actual instanceof expected){return true}}catch(e){}if(Error.isPrototypeOf(expected)){return false}return expected.call({},actual)===true}function _tryBlock(block){var error;try{block()}catch(e){error=e}return error}function _throws(shouldThrow,block,expected,message){var actual;if(typeof block!=="function"){throw new TypeError('"block" argument must be a function')}if(typeof expected==="string"){message=expected;expected=null}actual=_tryBlock(block);message=(expected&&expected.name?" ("+expected.name+").":".")+(message?" "+message:".");if(shouldThrow&&!actual){fail(actual,expected,"Missing expected exception"+message)}var userProvidedMessage=typeof message==="string";var isUnwantedException=!shouldThrow&&util.isError(actual);var isUnexpectedException=!shouldThrow&&actual&&!expected;if(isUnwantedException&&userProvidedMessage&&expectedException(actual,expected)||isUnexpectedException){fail(actual,expected,"Got unwanted exception"+message)}if(shouldThrow&&actual&&expected&&!expectedException(actual,expected)||!shouldThrow&&actual){throw actual}}assert.throws=function(block,error,message){_throws(true,block,error,message)};assert.doesNotThrow=function(block,error,message){_throws(false,block,error,message)};assert.ifError=function(err){if(err)throw err};function strict(value,message){if(!value)fail(value,true,message,"==",strict)}assert.strict=objectAssign(strict,assert,{equal:assert.strictEqual,deepEqual:assert.deepStrictEqual,notEqual:assert.notStrictEqual,notDeepEqual:assert.notDeepStrictEqual});assert.strict.strict=assert.strict;var objectKeys=Object.keys||function(obj){var keys=[];for(var key in obj){if(hasOwn.call(obj,key))keys.push(key)}return keys}}).call(this)}).call(this,typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{"object-assign":21,"util/":10}],8:[function(require,module,exports){if(typeof Object.create==="function"){module.exports=function inherits(ctor,superCtor){ctor.super_=superCtor;ctor.prototype=Object.create(superCtor.prototype,{constructor:{value:ctor,enumerable:false,writable:true,configurable:true}})}}else{module.exports=function inherits(ctor,superCtor){ctor.super_=superCtor;var TempCtor=function(){};TempCtor.prototype=superCtor.prototype;ctor.prototype=new TempCtor;ctor.prototype.constructor=ctor}}},{}],9:[function(require,module,exports){module.exports=function isBuffer(arg){return arg&&typeof arg==="object"&&typeof arg.copy==="function"&&typeof arg.fill==="function"&&typeof arg.readUInt8==="function"}},{}],10:[function(require,module,exports){(function(process,global){(function(){var formatRegExp=/%[sdj%]/g;exports.format=function(f){if(!isString(f)){var objects=[];for(var i=0;i=len)return x;switch(x){case"%s":return String(args[i++]);case"%d":return Number(args[i++]);case"%j":try{return JSON.stringify(args[i++])}catch(_){return"[Circular]"}default:return x}});for(var x=args[i];i=3)ctx.depth=arguments[2];if(arguments.length>=4)ctx.colors=arguments[3];if(isBoolean(opts)){ctx.showHidden=opts}else if(opts){exports._extend(ctx,opts)}if(isUndefined(ctx.showHidden))ctx.showHidden=false;if(isUndefined(ctx.depth))ctx.depth=2;if(isUndefined(ctx.colors))ctx.colors=false;if(isUndefined(ctx.customInspect))ctx.customInspect=true;if(ctx.colors)ctx.stylize=stylizeWithColor;return formatValue(ctx,obj,ctx.depth)}exports.inspect=inspect;inspect.colors={bold:[1,22],italic:[3,23],underline:[4,24],inverse:[7,27],white:[37,39],grey:[90,39],black:[30,39],blue:[34,39],cyan:[36,39],green:[32,39],magenta:[35,39],red:[31,39],yellow:[33,39]};inspect.styles={special:"cyan",number:"yellow",boolean:"yellow",undefined:"grey",null:"bold",string:"green",date:"magenta",regexp:"red"};function stylizeWithColor(str,styleType){var style=inspect.styles[styleType];if(style){return"["+inspect.colors[style][0]+"m"+str+"["+inspect.colors[style][1]+"m"}else{return str}}function stylizeNoColor(str,styleType){return str}function arrayToHash(array){var hash={};array.forEach(function(val,idx){hash[val]=true});return hash}function formatValue(ctx,value,recurseTimes){if(ctx.customInspect&&value&&isFunction(value.inspect)&&value.inspect!==exports.inspect&&!(value.constructor&&value.constructor.prototype===value)){var ret=value.inspect(recurseTimes,ctx);if(!isString(ret)){ret=formatValue(ctx,ret,recurseTimes)}return ret}var primitive=formatPrimitive(ctx,value);if(primitive){return primitive}var keys=Object.keys(value);var visibleKeys=arrayToHash(keys);if(ctx.showHidden){keys=Object.getOwnPropertyNames(value)}if(isError(value)&&(keys.indexOf("message")>=0||keys.indexOf("description")>=0)){return formatError(value)}if(keys.length===0){if(isFunction(value)){var name=value.name?": "+value.name:"";return ctx.stylize("[Function"+name+"]","special")}if(isRegExp(value)){return ctx.stylize(RegExp.prototype.toString.call(value),"regexp")}if(isDate(value)){return ctx.stylize(Date.prototype.toString.call(value),"date")}if(isError(value)){return formatError(value)}}var base="",array=false,braces=["{","}"];if(isArray(value)){array=true;braces=["[","]"]}if(isFunction(value)){var n=value.name?": "+value.name:"";base=" [Function"+n+"]"}if(isRegExp(value)){base=" "+RegExp.prototype.toString.call(value)}if(isDate(value)){base=" "+Date.prototype.toUTCString.call(value)}if(isError(value)){base=" "+formatError(value)}if(keys.length===0&&(!array||value.length==0)){return braces[0]+base+braces[1]}if(recurseTimes<0){if(isRegExp(value)){return ctx.stylize(RegExp.prototype.toString.call(value),"regexp")}else{return ctx.stylize("[Object]","special")}}ctx.seen.push(value);var output;if(array){output=formatArray(ctx,value,recurseTimes,visibleKeys,keys)}else{output=keys.map(function(key){return formatProperty(ctx,value,recurseTimes,visibleKeys,key,array)})}ctx.seen.pop();return reduceToSingleString(output,base,braces)}function formatPrimitive(ctx,value){if(isUndefined(value))return ctx.stylize("undefined","undefined");if(isString(value)){var simple="'"+JSON.stringify(value).replace(/^"|"$/g,"").replace(/'/g,"\\'").replace(/\\"/g,'"')+"'";return ctx.stylize(simple,"string")}if(isNumber(value))return ctx.stylize(""+value,"number");if(isBoolean(value))return ctx.stylize(""+value,"boolean");if(isNull(value))return ctx.stylize("null","null")}function formatError(value){return"["+Error.prototype.toString.call(value)+"]"}function formatArray(ctx,value,recurseTimes,visibleKeys,keys){var output=[];for(var i=0,l=value.length;i-1){if(array){str=str.split("\n").map(function(line){return" "+line}).join("\n").substr(2)}else{str="\n"+str.split("\n").map(function(line){return" "+line}).join("\n")}}}else{str=ctx.stylize("[Circular]","special")}}if(isUndefined(name)){if(array&&key.match(/^\d+$/)){return str}name=JSON.stringify(""+key);if(name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)){name=name.substr(1,name.length-2);name=ctx.stylize(name,"name")}else{name=name.replace(/'/g,"\\'").replace(/\\"/g,'"').replace(/(^"|"$)/g,"'");name=ctx.stylize(name,"string")}}return name+": "+str}function reduceToSingleString(output,base,braces){var numLinesEst=0;var length=output.reduce(function(prev,cur){numLinesEst++;if(cur.indexOf("\n")>=0)numLinesEst++;return prev+cur.replace(/\u001b\[\d\d?m/g,"").length+1},0);if(length>60){return braces[0]+(base===""?"":base+"\n ")+" "+output.join(",\n ")+" "+braces[1]}return braces[0]+base+" "+output.join(", ")+" "+braces[1]}function isArray(ar){return Array.isArray(ar)}exports.isArray=isArray;function isBoolean(arg){return typeof arg==="boolean"}exports.isBoolean=isBoolean;function isNull(arg){return arg===null}exports.isNull=isNull;function isNullOrUndefined(arg){return arg==null}exports.isNullOrUndefined=isNullOrUndefined;function isNumber(arg){return typeof arg==="number"}exports.isNumber=isNumber;function isString(arg){return typeof arg==="string"}exports.isString=isString;function isSymbol(arg){return typeof arg==="symbol"}exports.isSymbol=isSymbol;function isUndefined(arg){return arg===void 0}exports.isUndefined=isUndefined;function isRegExp(re){return isObject(re)&&objectToString(re)==="[object RegExp]"}exports.isRegExp=isRegExp;function isObject(arg){return typeof arg==="object"&&arg!==null}exports.isObject=isObject;function isDate(d){return isObject(d)&&objectToString(d)==="[object Date]"}exports.isDate=isDate;function isError(e){return isObject(e)&&(objectToString(e)==="[object Error]"||e instanceof Error)}exports.isError=isError;function isFunction(arg){return typeof arg==="function"}exports.isFunction=isFunction;function isPrimitive(arg){return arg===null||typeof arg==="boolean"||typeof arg==="number"||typeof arg==="string"||typeof arg==="symbol"||typeof arg==="undefined"}exports.isPrimitive=isPrimitive;exports.isBuffer=require("./support/isBuffer");function objectToString(o){return Object.prototype.toString.call(o)}function pad(n){return n<10?"0"+n.toString(10):n.toString(10)}var months=["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];function timestamp(){var d=new Date;var time=[pad(d.getHours()),pad(d.getMinutes()),pad(d.getSeconds())].join(":");return[d.getDate(),months[d.getMonth()],time].join(" ")}exports.log=function(){console.log("%s - %s",timestamp(),exports.format.apply(exports,arguments))};exports.inherits=require("inherits");exports._extend=function(origin,add){if(!add||!isObject(add))return origin;var keys=Object.keys(add);var i=keys.length;while(i--){origin[keys[i]]=add[keys[i]]}return origin};function hasOwnProperty(obj,prop){return Object.prototype.hasOwnProperty.call(obj,prop)}}).call(this)}).call(this,require("_process"),typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{"./support/isBuffer":9,_process:23,inherits:8}],11:[function(require,module,exports){"use strict";exports.byteLength=byteLength;exports.toByteArray=toByteArray;exports.fromByteArray=fromByteArray;var lookup=[];var revLookup=[];var Arr=typeof Uint8Array!=="undefined"?Uint8Array:Array;var code="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";for(var i=0,len=code.length;i0){throw new Error("Invalid string. Length must be a multiple of 4")}var validLen=b64.indexOf("=");if(validLen===-1)validLen=len;var placeHoldersLen=validLen===len?0:4-validLen%4;return[validLen,placeHoldersLen]}function byteLength(b64){var lens=getLens(b64);var validLen=lens[0];var placeHoldersLen=lens[1];return(validLen+placeHoldersLen)*3/4-placeHoldersLen}function _byteLength(b64,validLen,placeHoldersLen){return(validLen+placeHoldersLen)*3/4-placeHoldersLen}function toByteArray(b64){var tmp;var lens=getLens(b64);var validLen=lens[0];var placeHoldersLen=lens[1];var arr=new Arr(_byteLength(b64,validLen,placeHoldersLen));var curByte=0;var len=placeHoldersLen>0?validLen-4:validLen;var i;for(i=0;i>16&255;arr[curByte++]=tmp>>8&255;arr[curByte++]=tmp&255}if(placeHoldersLen===2){tmp=revLookup[b64.charCodeAt(i)]<<2|revLookup[b64.charCodeAt(i+1)]>>4;arr[curByte++]=tmp&255}if(placeHoldersLen===1){tmp=revLookup[b64.charCodeAt(i)]<<10|revLookup[b64.charCodeAt(i+1)]<<4|revLookup[b64.charCodeAt(i+2)]>>2;arr[curByte++]=tmp>>8&255;arr[curByte++]=tmp&255}return arr}function tripletToBase64(num){return lookup[num>>18&63]+lookup[num>>12&63]+lookup[num>>6&63]+lookup[num&63]}function encodeChunk(uint8,start,end){var tmp;var output=[];for(var i=start;ilen2?len2:i+maxChunkLength))}if(extraBytes===1){tmp=uint8[len-1];parts.push(lookup[tmp>>2]+lookup[tmp<<4&63]+"==")}else if(extraBytes===2){tmp=(uint8[len-2]<<8)+uint8[len-1];parts.push(lookup[tmp>>10]+lookup[tmp>>4&63]+lookup[tmp<<2&63]+"=")}return parts.join("")}},{}],12:[function(require,module,exports){"use strict";var DuplexStream=require("readable-stream").Duplex,util=require("util"),Buffer=require("safe-buffer").Buffer;function BufferList(callback){if(!(this instanceof BufferList))return new BufferList(callback);this._bufs=[];this.length=0;if(typeof callback=="function"){this._callback=callback;var piper=function piper(err){if(this._callback){this._callback(err);this._callback=null}}.bind(this);this.on("pipe",function onPipe(src){src.on("error",piper)});this.on("unpipe",function onUnpipe(src){src.removeListener("error",piper)})}else{this.append(callback)}DuplexStream.call(this)}util.inherits(BufferList,DuplexStream);BufferList.prototype._offset=function _offset(offset){var tot=0,i=0,_t;if(offset===0)return[0,0];for(;ithis.length||index<0){return undefined}var offset=this._offset(index);return this._bufs[offset[0]][offset[1]]};BufferList.prototype.slice=function slice(start,end){if(typeof start=="number"&&start<0)start+=this.length;if(typeof end=="number"&&end<0)end+=this.length;return this.copy(null,0,start,end)};BufferList.prototype.copy=function copy(dst,dstStart,srcStart,srcEnd){if(typeof srcStart!="number"||srcStart<0)srcStart=0;if(typeof srcEnd!="number"||srcEnd>this.length)srcEnd=this.length;if(srcStart>=this.length)return dst||Buffer.alloc(0);if(srcEnd<=0)return dst||Buffer.alloc(0);var copy=!!dst,off=this._offset(srcStart),len=srcEnd-srcStart,bytes=len,bufoff=copy&&dstStart||0,start=off[1],l,i;if(srcStart===0&&srcEnd==this.length){if(!copy){return this._bufs.length===1?this._bufs[0]:Buffer.concat(this._bufs,this.length)}for(i=0;il){this._bufs[i].copy(dst,bufoff,start);bufoff+=l}else{this._bufs[i].copy(dst,bufoff,start,start+bytes);bufoff+=l;break}bytes-=l;if(start)start=0}if(dst.length>bufoff)return dst.slice(0,bufoff);return dst};BufferList.prototype.shallowSlice=function shallowSlice(start,end){start=start||0;end=typeof end!=="number"?this.length:end;if(start<0)start+=this.length;if(end<0)end+=this.length;if(start===end){return new BufferList}var startOffset=this._offset(start),endOffset=this._offset(end),buffers=this._bufs.slice(startOffset[0],endOffset[0]+1);if(endOffset[1]==0)buffers.pop();else buffers[buffers.length-1]=buffers[buffers.length-1].slice(0,endOffset[1]);if(startOffset[1]!=0)buffers[0]=buffers[0].slice(startOffset[1]);return new BufferList(buffers)};BufferList.prototype.toString=function toString(encoding,start,end){return this.slice(start,end).toString(encoding)};BufferList.prototype.consume=function consume(bytes){bytes=Math.trunc(bytes);if(Number.isNaN(bytes)||bytes<=0)return this;while(this._bufs.length){if(bytes>=this._bufs[0].length){bytes-=this._bufs[0].length;this.length-=this._bufs[0].length;this._bufs.shift()}else{this._bufs[0]=this._bufs[0].slice(bytes);this.length-=bytes;break}}return this};BufferList.prototype.duplicate=function duplicate(){var i=0,copy=new BufferList;for(;ithis.length?this.length:offset}var blOffset=this._offset(offset);var blIndex=blOffset[0];var buffOffset=blOffset[1];for(blIndex;blIndex=search.length){var nativeSearchResult=buff.indexOf(search,buffOffset);if(nativeSearchResult!==-1){return this._reverseOffset([blIndex,nativeSearchResult])}buffOffset=buff.length-search.length+1}else{var revOffset=this._reverseOffset([blIndex,buffOffset]);if(this._match(revOffset,search)){return revOffset}buffOffset++}}buffOffset=0}return-1};BufferList.prototype._match=function(offset,search){if(this.length-offsetK_MAX_LENGTH){throw new RangeError('The value "'+length+'" is invalid for option "size"')}var buf=new Uint8Array(length);buf.__proto__=Buffer.prototype;return buf}function Buffer(arg,encodingOrOffset,length){if(typeof arg==="number"){if(typeof encodingOrOffset==="string"){throw new TypeError('The "string" argument must be of type string. Received type number')}return allocUnsafe(arg)}return from(arg,encodingOrOffset,length)}if(typeof Symbol!=="undefined"&&Symbol.species!=null&&Buffer[Symbol.species]===Buffer){Object.defineProperty(Buffer,Symbol.species,{value:null,configurable:true,enumerable:false,writable:false})}Buffer.poolSize=8192;function from(value,encodingOrOffset,length){if(typeof value==="string"){return fromString(value,encodingOrOffset)}if(ArrayBuffer.isView(value)){return fromArrayLike(value)}if(value==null){throw TypeError("The first argument must be one of type string, Buffer, ArrayBuffer, Array, "+"or Array-like Object. Received type "+typeof value)}if(isInstance(value,ArrayBuffer)||value&&isInstance(value.buffer,ArrayBuffer)){return fromArrayBuffer(value,encodingOrOffset,length)}if(typeof value==="number"){throw new TypeError('The "value" argument must not be of type number. Received type number')}var valueOf=value.valueOf&&value.valueOf();if(valueOf!=null&&valueOf!==value){return Buffer.from(valueOf,encodingOrOffset,length)}var b=fromObject(value);if(b)return b;if(typeof Symbol!=="undefined"&&Symbol.toPrimitive!=null&&typeof value[Symbol.toPrimitive]==="function"){return Buffer.from(value[Symbol.toPrimitive]("string"),encodingOrOffset,length)}throw new TypeError("The first argument must be one of type string, Buffer, ArrayBuffer, Array, "+"or Array-like Object. Received type "+typeof value)}Buffer.from=function(value,encodingOrOffset,length){return from(value,encodingOrOffset,length)};Buffer.prototype.__proto__=Uint8Array.prototype;Buffer.__proto__=Uint8Array;function assertSize(size){if(typeof size!=="number"){throw new TypeError('"size" argument must be of type number')}else if(size<0){throw new RangeError('The value "'+size+'" is invalid for option "size"')}}function alloc(size,fill,encoding){assertSize(size);if(size<=0){return createBuffer(size)}if(fill!==undefined){return typeof encoding==="string"?createBuffer(size).fill(fill,encoding):createBuffer(size).fill(fill)}return createBuffer(size)}Buffer.alloc=function(size,fill,encoding){return alloc(size,fill,encoding)};function allocUnsafe(size){assertSize(size);return createBuffer(size<0?0:checked(size)|0)}Buffer.allocUnsafe=function(size){return allocUnsafe(size)};Buffer.allocUnsafeSlow=function(size){return allocUnsafe(size)};function fromString(string,encoding){if(typeof encoding!=="string"||encoding===""){encoding="utf8"}if(!Buffer.isEncoding(encoding)){throw new TypeError("Unknown encoding: "+encoding)}var length=byteLength(string,encoding)|0;var buf=createBuffer(length);var actual=buf.write(string,encoding);if(actual!==length){buf=buf.slice(0,actual)}return buf}function fromArrayLike(array){var length=array.length<0?0:checked(array.length)|0;var buf=createBuffer(length);for(var i=0;i=K_MAX_LENGTH){throw new RangeError("Attempt to allocate Buffer larger than maximum "+"size: 0x"+K_MAX_LENGTH.toString(16)+" bytes")}return length|0}function SlowBuffer(length){if(+length!=length){length=0}return Buffer.alloc(+length)}Buffer.isBuffer=function isBuffer(b){return b!=null&&b._isBuffer===true&&b!==Buffer.prototype};Buffer.compare=function compare(a,b){if(isInstance(a,Uint8Array))a=Buffer.from(a,a.offset,a.byteLength);if(isInstance(b,Uint8Array))b=Buffer.from(b,b.offset,b.byteLength);if(!Buffer.isBuffer(a)||!Buffer.isBuffer(b)){throw new TypeError('The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array')}if(a===b)return 0;var x=a.length;var y=b.length;for(var i=0,len=Math.min(x,y);i2&&arguments[2]===true;if(!mustMatch&&len===0)return 0;var loweredCase=false;for(;;){switch(encoding){case"ascii":case"latin1":case"binary":return len;case"utf8":case"utf-8":return utf8ToBytes(string).length;case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return len*2;case"hex":return len>>>1;case"base64":return base64ToBytes(string).length;default:if(loweredCase){return mustMatch?-1:utf8ToBytes(string).length}encoding=(""+encoding).toLowerCase();loweredCase=true}}}Buffer.byteLength=byteLength;function slowToString(encoding,start,end){var loweredCase=false;if(start===undefined||start<0){start=0}if(start>this.length){return""}if(end===undefined||end>this.length){end=this.length}if(end<=0){return""}end>>>=0;start>>>=0;if(end<=start){return""}if(!encoding)encoding="utf8";while(true){switch(encoding){case"hex":return hexSlice(this,start,end);case"utf8":case"utf-8":return utf8Slice(this,start,end);case"ascii":return asciiSlice(this,start,end);case"latin1":case"binary":return latin1Slice(this,start,end);case"base64":return base64Slice(this,start,end);case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return utf16leSlice(this,start,end);default:if(loweredCase)throw new TypeError("Unknown encoding: "+encoding);encoding=(encoding+"").toLowerCase();loweredCase=true}}}Buffer.prototype._isBuffer=true;function swap(b,n,m){var i=b[n];b[n]=b[m];b[m]=i}Buffer.prototype.swap16=function swap16(){var len=this.length;if(len%2!==0){throw new RangeError("Buffer size must be a multiple of 16-bits")}for(var i=0;imax)str+=" ... ";return""};Buffer.prototype.compare=function compare(target,start,end,thisStart,thisEnd){if(isInstance(target,Uint8Array)){target=Buffer.from(target,target.offset,target.byteLength)}if(!Buffer.isBuffer(target)){throw new TypeError('The "target" argument must be one of type Buffer or Uint8Array. '+"Received type "+typeof target)}if(start===undefined){start=0}if(end===undefined){end=target?target.length:0}if(thisStart===undefined){thisStart=0}if(thisEnd===undefined){thisEnd=this.length}if(start<0||end>target.length||thisStart<0||thisEnd>this.length){throw new RangeError("out of range index")}if(thisStart>=thisEnd&&start>=end){return 0}if(thisStart>=thisEnd){return-1}if(start>=end){return 1}start>>>=0;end>>>=0;thisStart>>>=0;thisEnd>>>=0;if(this===target)return 0;var x=thisEnd-thisStart;var y=end-start;var len=Math.min(x,y);var thisCopy=this.slice(thisStart,thisEnd);var targetCopy=target.slice(start,end);for(var i=0;i2147483647){byteOffset=2147483647}else if(byteOffset<-2147483648){byteOffset=-2147483648}byteOffset=+byteOffset;if(numberIsNaN(byteOffset)){byteOffset=dir?0:buffer.length-1}if(byteOffset<0)byteOffset=buffer.length+byteOffset;if(byteOffset>=buffer.length){if(dir)return-1;else byteOffset=buffer.length-1}else if(byteOffset<0){if(dir)byteOffset=0;else return-1}if(typeof val==="string"){val=Buffer.from(val,encoding)}if(Buffer.isBuffer(val)){if(val.length===0){return-1}return arrayIndexOf(buffer,val,byteOffset,encoding,dir)}else if(typeof val==="number"){val=val&255;if(typeof Uint8Array.prototype.indexOf==="function"){if(dir){return Uint8Array.prototype.indexOf.call(buffer,val,byteOffset)}else{return Uint8Array.prototype.lastIndexOf.call(buffer,val,byteOffset)}}return arrayIndexOf(buffer,[val],byteOffset,encoding,dir)}throw new TypeError("val must be string, number or Buffer")}function arrayIndexOf(arr,val,byteOffset,encoding,dir){var indexSize=1;var arrLength=arr.length;var valLength=val.length;if(encoding!==undefined){encoding=String(encoding).toLowerCase();if(encoding==="ucs2"||encoding==="ucs-2"||encoding==="utf16le"||encoding==="utf-16le"){if(arr.length<2||val.length<2){return-1}indexSize=2;arrLength/=2;valLength/=2;byteOffset/=2}}function read(buf,i){if(indexSize===1){return buf[i]}else{return buf.readUInt16BE(i*indexSize)}}var i;if(dir){var foundIndex=-1;for(i=byteOffset;iarrLength)byteOffset=arrLength-valLength;for(i=byteOffset;i>=0;i--){var found=true;for(var j=0;jremaining){length=remaining}}var strLen=string.length;if(length>strLen/2){length=strLen/2}for(var i=0;i>>0;if(isFinite(length)){length=length>>>0;if(encoding===undefined)encoding="utf8"}else{encoding=length;length=undefined}}else{throw new Error("Buffer.write(string, encoding, offset[, length]) is no longer supported")}var remaining=this.length-offset;if(length===undefined||length>remaining)length=remaining;if(string.length>0&&(length<0||offset<0)||offset>this.length){throw new RangeError("Attempt to write outside buffer bounds")}if(!encoding)encoding="utf8";var loweredCase=false;for(;;){switch(encoding){case"hex":return hexWrite(this,string,offset,length);case"utf8":case"utf-8":return utf8Write(this,string,offset,length);case"ascii":return asciiWrite(this,string,offset,length);case"latin1":case"binary":return latin1Write(this,string,offset,length);case"base64":return base64Write(this,string,offset,length);case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return ucs2Write(this,string,offset,length);default:if(loweredCase)throw new TypeError("Unknown encoding: "+encoding);encoding=(""+encoding).toLowerCase();loweredCase=true}}};Buffer.prototype.toJSON=function toJSON(){return{type:"Buffer",data:Array.prototype.slice.call(this._arr||this,0)}};function base64Slice(buf,start,end){if(start===0&&end===buf.length){return base64.fromByteArray(buf)}else{return base64.fromByteArray(buf.slice(start,end))}}function utf8Slice(buf,start,end){end=Math.min(buf.length,end);var res=[];var i=start;while(i239?4:firstByte>223?3:firstByte>191?2:1;if(i+bytesPerSequence<=end){var secondByte,thirdByte,fourthByte,tempCodePoint;switch(bytesPerSequence){case 1:if(firstByte<128){codePoint=firstByte}break;case 2:secondByte=buf[i+1];if((secondByte&192)===128){tempCodePoint=(firstByte&31)<<6|secondByte&63;if(tempCodePoint>127){codePoint=tempCodePoint}}break;case 3:secondByte=buf[i+1];thirdByte=buf[i+2];if((secondByte&192)===128&&(thirdByte&192)===128){tempCodePoint=(firstByte&15)<<12|(secondByte&63)<<6|thirdByte&63;if(tempCodePoint>2047&&(tempCodePoint<55296||tempCodePoint>57343)){codePoint=tempCodePoint}}break;case 4:secondByte=buf[i+1];thirdByte=buf[i+2];fourthByte=buf[i+3];if((secondByte&192)===128&&(thirdByte&192)===128&&(fourthByte&192)===128){tempCodePoint=(firstByte&15)<<18|(secondByte&63)<<12|(thirdByte&63)<<6|fourthByte&63;if(tempCodePoint>65535&&tempCodePoint<1114112){codePoint=tempCodePoint}}}}if(codePoint===null){codePoint=65533;bytesPerSequence=1}else if(codePoint>65535){codePoint-=65536;res.push(codePoint>>>10&1023|55296);codePoint=56320|codePoint&1023}res.push(codePoint);i+=bytesPerSequence}return decodeCodePointsArray(res)}var MAX_ARGUMENTS_LENGTH=4096;function decodeCodePointsArray(codePoints){var len=codePoints.length;if(len<=MAX_ARGUMENTS_LENGTH){return String.fromCharCode.apply(String,codePoints)}var res="";var i=0;while(ilen)end=len;var out="";for(var i=start;ilen){start=len}if(end<0){end+=len;if(end<0)end=0}else if(end>len){end=len}if(endlength)throw new RangeError("Trying to access beyond buffer length")}Buffer.prototype.readUIntLE=function readUIntLE(offset,byteLength,noAssert){offset=offset>>>0;byteLength=byteLength>>>0;if(!noAssert)checkOffset(offset,byteLength,this.length);var val=this[offset];var mul=1;var i=0;while(++i>>0;byteLength=byteLength>>>0;if(!noAssert){checkOffset(offset,byteLength,this.length)}var val=this[offset+--byteLength];var mul=1;while(byteLength>0&&(mul*=256)){val+=this[offset+--byteLength]*mul}return val};Buffer.prototype.readUInt8=function readUInt8(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,1,this.length);return this[offset]};Buffer.prototype.readUInt16LE=function readUInt16LE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,2,this.length);return this[offset]|this[offset+1]<<8};Buffer.prototype.readUInt16BE=function readUInt16BE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,2,this.length);return this[offset]<<8|this[offset+1]};Buffer.prototype.readUInt32LE=function readUInt32LE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return(this[offset]|this[offset+1]<<8|this[offset+2]<<16)+this[offset+3]*16777216};Buffer.prototype.readUInt32BE=function readUInt32BE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return this[offset]*16777216+(this[offset+1]<<16|this[offset+2]<<8|this[offset+3])};Buffer.prototype.readIntLE=function readIntLE(offset,byteLength,noAssert){offset=offset>>>0;byteLength=byteLength>>>0;if(!noAssert)checkOffset(offset,byteLength,this.length);var val=this[offset];var mul=1;var i=0;while(++i=mul)val-=Math.pow(2,8*byteLength);return val};Buffer.prototype.readIntBE=function readIntBE(offset,byteLength,noAssert){offset=offset>>>0;byteLength=byteLength>>>0;if(!noAssert)checkOffset(offset,byteLength,this.length);var i=byteLength;var mul=1;var val=this[offset+--i];while(i>0&&(mul*=256)){val+=this[offset+--i]*mul}mul*=128;if(val>=mul)val-=Math.pow(2,8*byteLength);return val};Buffer.prototype.readInt8=function readInt8(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,1,this.length);if(!(this[offset]&128))return this[offset];return(255-this[offset]+1)*-1};Buffer.prototype.readInt16LE=function readInt16LE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,2,this.length);var val=this[offset]|this[offset+1]<<8;return val&32768?val|4294901760:val};Buffer.prototype.readInt16BE=function readInt16BE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,2,this.length);var val=this[offset+1]|this[offset]<<8;return val&32768?val|4294901760:val};Buffer.prototype.readInt32LE=function readInt32LE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return this[offset]|this[offset+1]<<8|this[offset+2]<<16|this[offset+3]<<24};Buffer.prototype.readInt32BE=function readInt32BE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return this[offset]<<24|this[offset+1]<<16|this[offset+2]<<8|this[offset+3]};Buffer.prototype.readFloatLE=function readFloatLE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return ieee754.read(this,offset,true,23,4)};Buffer.prototype.readFloatBE=function readFloatBE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,4,this.length);return ieee754.read(this,offset,false,23,4)};Buffer.prototype.readDoubleLE=function readDoubleLE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,8,this.length);return ieee754.read(this,offset,true,52,8)};Buffer.prototype.readDoubleBE=function readDoubleBE(offset,noAssert){offset=offset>>>0;if(!noAssert)checkOffset(offset,8,this.length);return ieee754.read(this,offset,false,52,8)};function checkInt(buf,value,offset,ext,max,min){if(!Buffer.isBuffer(buf))throw new TypeError('"buffer" argument must be a Buffer instance');if(value>max||valuebuf.length)throw new RangeError("Index out of range")}Buffer.prototype.writeUIntLE=function writeUIntLE(value,offset,byteLength,noAssert){value=+value;offset=offset>>>0;byteLength=byteLength>>>0;if(!noAssert){var maxBytes=Math.pow(2,8*byteLength)-1;checkInt(this,value,offset,byteLength,maxBytes,0)}var mul=1;var i=0;this[offset]=value&255;while(++i>>0;byteLength=byteLength>>>0;if(!noAssert){var maxBytes=Math.pow(2,8*byteLength)-1;checkInt(this,value,offset,byteLength,maxBytes,0)}var i=byteLength-1;var mul=1;this[offset+i]=value&255;while(--i>=0&&(mul*=256)){this[offset+i]=value/mul&255}return offset+byteLength};Buffer.prototype.writeUInt8=function writeUInt8(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,1,255,0);this[offset]=value&255;return offset+1};Buffer.prototype.writeUInt16LE=function writeUInt16LE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,2,65535,0);this[offset]=value&255;this[offset+1]=value>>>8;return offset+2};Buffer.prototype.writeUInt16BE=function writeUInt16BE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,2,65535,0);this[offset]=value>>>8;this[offset+1]=value&255;return offset+2};Buffer.prototype.writeUInt32LE=function writeUInt32LE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,4,4294967295,0);this[offset+3]=value>>>24;this[offset+2]=value>>>16;this[offset+1]=value>>>8;this[offset]=value&255;return offset+4};Buffer.prototype.writeUInt32BE=function writeUInt32BE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,4,4294967295,0);this[offset]=value>>>24;this[offset+1]=value>>>16;this[offset+2]=value>>>8;this[offset+3]=value&255;return offset+4};Buffer.prototype.writeIntLE=function writeIntLE(value,offset,byteLength,noAssert){value=+value;offset=offset>>>0;if(!noAssert){var limit=Math.pow(2,8*byteLength-1);checkInt(this,value,offset,byteLength,limit-1,-limit)}var i=0;var mul=1;var sub=0;this[offset]=value&255;while(++i>0)-sub&255}return offset+byteLength};Buffer.prototype.writeIntBE=function writeIntBE(value,offset,byteLength,noAssert){value=+value;offset=offset>>>0;if(!noAssert){var limit=Math.pow(2,8*byteLength-1);checkInt(this,value,offset,byteLength,limit-1,-limit)}var i=byteLength-1;var mul=1;var sub=0;this[offset+i]=value&255;while(--i>=0&&(mul*=256)){if(value<0&&sub===0&&this[offset+i+1]!==0){sub=1}this[offset+i]=(value/mul>>0)-sub&255}return offset+byteLength};Buffer.prototype.writeInt8=function writeInt8(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,1,127,-128);if(value<0)value=255+value+1;this[offset]=value&255;return offset+1};Buffer.prototype.writeInt16LE=function writeInt16LE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,2,32767,-32768);this[offset]=value&255;this[offset+1]=value>>>8;return offset+2};Buffer.prototype.writeInt16BE=function writeInt16BE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,2,32767,-32768);this[offset]=value>>>8;this[offset+1]=value&255;return offset+2};Buffer.prototype.writeInt32LE=function writeInt32LE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,4,2147483647,-2147483648);this[offset]=value&255;this[offset+1]=value>>>8;this[offset+2]=value>>>16;this[offset+3]=value>>>24;return offset+4};Buffer.prototype.writeInt32BE=function writeInt32BE(value,offset,noAssert){value=+value;offset=offset>>>0;if(!noAssert)checkInt(this,value,offset,4,2147483647,-2147483648);if(value<0)value=4294967295+value+1;this[offset]=value>>>24;this[offset+1]=value>>>16;this[offset+2]=value>>>8;this[offset+3]=value&255;return offset+4};function checkIEEE754(buf,value,offset,ext,max,min){if(offset+ext>buf.length)throw new RangeError("Index out of range");if(offset<0)throw new RangeError("Index out of range")}function writeFloat(buf,value,offset,littleEndian,noAssert){value=+value;offset=offset>>>0;if(!noAssert){checkIEEE754(buf,value,offset,4,34028234663852886e22,-34028234663852886e22)}ieee754.write(buf,value,offset,littleEndian,23,4);return offset+4}Buffer.prototype.writeFloatLE=function writeFloatLE(value,offset,noAssert){return writeFloat(this,value,offset,true,noAssert)};Buffer.prototype.writeFloatBE=function writeFloatBE(value,offset,noAssert){return writeFloat(this,value,offset,false,noAssert)};function writeDouble(buf,value,offset,littleEndian,noAssert){value=+value;offset=offset>>>0;if(!noAssert){checkIEEE754(buf,value,offset,8,17976931348623157e292,-17976931348623157e292)}ieee754.write(buf,value,offset,littleEndian,52,8);return offset+8}Buffer.prototype.writeDoubleLE=function writeDoubleLE(value,offset,noAssert){return writeDouble(this,value,offset,true,noAssert)};Buffer.prototype.writeDoubleBE=function writeDoubleBE(value,offset,noAssert){return writeDouble(this,value,offset,false,noAssert)};Buffer.prototype.copy=function copy(target,targetStart,start,end){if(!Buffer.isBuffer(target))throw new TypeError("argument should be a Buffer");if(!start)start=0;if(!end&&end!==0)end=this.length;if(targetStart>=target.length)targetStart=target.length;if(!targetStart)targetStart=0;if(end>0&&end=this.length)throw new RangeError("Index out of range");if(end<0)throw new RangeError("sourceEnd out of bounds");if(end>this.length)end=this.length;if(target.length-targetStart=0;--i){target[i+targetStart]=this[i+start]}}else{Uint8Array.prototype.set.call(target,this.subarray(start,end),targetStart)}return len};Buffer.prototype.fill=function fill(val,start,end,encoding){if(typeof val==="string"){if(typeof start==="string"){encoding=start;start=0;end=this.length}else if(typeof end==="string"){encoding=end;end=this.length}if(encoding!==undefined&&typeof encoding!=="string"){throw new TypeError("encoding must be a string")}if(typeof encoding==="string"&&!Buffer.isEncoding(encoding)){throw new TypeError("Unknown encoding: "+encoding)}if(val.length===1){var code=val.charCodeAt(0);if(encoding==="utf8"&&code<128||encoding==="latin1"){val=code}}}else if(typeof val==="number"){val=val&255}if(start<0||this.length>>0;end=end===undefined?this.length:end>>>0;if(!val)val=0;var i;if(typeof val==="number"){for(i=start;i55295&&codePoint<57344){if(!leadSurrogate){if(codePoint>56319){if((units-=3)>-1)bytes.push(239,191,189);continue}else if(i+1===length){if((units-=3)>-1)bytes.push(239,191,189);continue}leadSurrogate=codePoint;continue}if(codePoint<56320){if((units-=3)>-1)bytes.push(239,191,189);leadSurrogate=codePoint;continue}codePoint=(leadSurrogate-55296<<10|codePoint-56320)+65536}else if(leadSurrogate){if((units-=3)>-1)bytes.push(239,191,189)}leadSurrogate=null;if(codePoint<128){if((units-=1)<0)break;bytes.push(codePoint)}else if(codePoint<2048){if((units-=2)<0)break;bytes.push(codePoint>>6|192,codePoint&63|128)}else if(codePoint<65536){if((units-=3)<0)break;bytes.push(codePoint>>12|224,codePoint>>6&63|128,codePoint&63|128)}else if(codePoint<1114112){if((units-=4)<0)break;bytes.push(codePoint>>18|240,codePoint>>12&63|128,codePoint>>6&63|128,codePoint&63|128)}else{throw new Error("Invalid code point")}}return bytes}function asciiToBytes(str){var byteArray=[];for(var i=0;i>8;lo=c%256;byteArray.push(lo);byteArray.push(hi)}return byteArray}function base64ToBytes(str){return base64.toByteArray(base64clean(str))}function blitBuffer(src,dst,offset,length){for(var i=0;i=dst.length||i>=src.length)break;dst[i+offset]=src[i]}return i}function isInstance(obj,type){return obj instanceof type||obj!=null&&obj.constructor!=null&&obj.constructor.name!=null&&obj.constructor.name===type.name}function numberIsNaN(obj){return obj!==obj}}).call(this)}).call(this,require("buffer").Buffer)},{"base64-js":11,buffer:14,ieee754:17}],15:[function(require,module,exports){(function(Buffer){(function(){function isArray(arg){if(Array.isArray){return Array.isArray(arg)}return objectToString(arg)==="[object Array]"}exports.isArray=isArray;function isBoolean(arg){return typeof arg==="boolean"}exports.isBoolean=isBoolean;function isNull(arg){return arg===null}exports.isNull=isNull;function isNullOrUndefined(arg){return arg==null}exports.isNullOrUndefined=isNullOrUndefined;function isNumber(arg){return typeof arg==="number"}exports.isNumber=isNumber;function isString(arg){return typeof arg==="string"}exports.isString=isString;function isSymbol(arg){return typeof arg==="symbol"}exports.isSymbol=isSymbol;function isUndefined(arg){return arg===void 0}exports.isUndefined=isUndefined;function isRegExp(re){return objectToString(re)==="[object RegExp]"}exports.isRegExp=isRegExp;function isObject(arg){return typeof arg==="object"&&arg!==null}exports.isObject=isObject;function isDate(d){return objectToString(d)==="[object Date]"}exports.isDate=isDate;function isError(e){return objectToString(e)==="[object Error]"||e instanceof Error}exports.isError=isError;function isFunction(arg){return typeof arg==="function"}exports.isFunction=isFunction;function isPrimitive(arg){return arg===null||typeof arg==="boolean"||typeof arg==="number"||typeof arg==="string"||typeof arg==="symbol"||typeof arg==="undefined"}exports.isPrimitive=isPrimitive;exports.isBuffer=Buffer.isBuffer;function objectToString(o){return Object.prototype.toString.call(o)}}).call(this)}).call(this,{isBuffer:require("../../is-buffer/index.js")})},{"../../is-buffer/index.js":19}],16:[function(require,module,exports){var objectCreate=Object.create||objectCreatePolyfill;var objectKeys=Object.keys||objectKeysPolyfill;var bind=Function.prototype.bind||functionBindPolyfill;function EventEmitter(){if(!this._events||!Object.prototype.hasOwnProperty.call(this,"_events")){this._events=objectCreate(null);this._eventsCount=0}this._maxListeners=this._maxListeners||undefined}module.exports=EventEmitter;EventEmitter.EventEmitter=EventEmitter;EventEmitter.prototype._events=undefined;EventEmitter.prototype._maxListeners=undefined;var defaultMaxListeners=10;var hasDefineProperty;try{var o={};if(Object.defineProperty)Object.defineProperty(o,"x",{value:0});hasDefineProperty=o.x===0}catch(err){hasDefineProperty=false}if(hasDefineProperty){Object.defineProperty(EventEmitter,"defaultMaxListeners",{enumerable:true,get:function(){return defaultMaxListeners},set:function(arg){if(typeof arg!=="number"||arg<0||arg!==arg)throw new TypeError('"defaultMaxListeners" must be a positive number');defaultMaxListeners=arg}})}else{EventEmitter.defaultMaxListeners=defaultMaxListeners}EventEmitter.prototype.setMaxListeners=function setMaxListeners(n){if(typeof n!=="number"||n<0||isNaN(n))throw new TypeError('"n" argument must be a positive number');this._maxListeners=n;return this};function $getMaxListeners(that){if(that._maxListeners===undefined)return EventEmitter.defaultMaxListeners;return that._maxListeners}EventEmitter.prototype.getMaxListeners=function getMaxListeners(){return $getMaxListeners(this)};function emitNone(handler,isFn,self){if(isFn)handler.call(self);else{var len=handler.length;var listeners=arrayClone(handler,len);for(var i=0;i1)er=arguments[1];if(er instanceof Error){throw er}else{var err=new Error('Unhandled "error" event. ('+er+")");err.context=er;throw err}return false}handler=events[type];if(!handler)return false;var isFn=typeof handler==="function";len=arguments.length;switch(len){case 1:emitNone(handler,isFn,this);break;case 2:emitOne(handler,isFn,this,arguments[1]);break;case 3:emitTwo(handler,isFn,this,arguments[1],arguments[2]);break;case 4:emitThree(handler,isFn,this,arguments[1],arguments[2],arguments[3]);break;default:args=new Array(len-1);for(i=1;i0&&existing.length>m){existing.warned=true;var w=new Error("Possible EventEmitter memory leak detected. "+existing.length+' "'+String(type)+'" listeners '+"added. Use emitter.setMaxListeners() to "+"increase limit.");w.name="MaxListenersExceededWarning";w.emitter=target;w.type=type;w.count=existing.length;if(typeof console==="object"&&console.warn){console.warn("%s: %s",w.name,w.message)}}}}return target}EventEmitter.prototype.addListener=function addListener(type,listener){return _addListener(this,type,listener,false)};EventEmitter.prototype.on=EventEmitter.prototype.addListener;EventEmitter.prototype.prependListener=function prependListener(type,listener){return _addListener(this,type,listener,true)};function onceWrapper(){if(!this.fired){this.target.removeListener(this.type,this.wrapFn);this.fired=true;switch(arguments.length){case 0:return this.listener.call(this.target);case 1:return this.listener.call(this.target,arguments[0]);case 2:return this.listener.call(this.target,arguments[0],arguments[1]);case 3:return this.listener.call(this.target,arguments[0],arguments[1],arguments[2]);default:var args=new Array(arguments.length);for(var i=0;i=0;i--){if(list[i]===listener||list[i].listener===listener){originalListener=list[i].listener;position=i;break}}if(position<0)return this;if(position===0)list.shift();else spliceOne(list,position);if(list.length===1)events[type]=list[0];if(events.removeListener)this.emit("removeListener",type,originalListener||listener)}return this};EventEmitter.prototype.removeAllListeners=function removeAllListeners(type){var listeners,events,i;events=this._events;if(!events)return this;if(!events.removeListener){if(arguments.length===0){this._events=objectCreate(null);this._eventsCount=0}else if(events[type]){if(--this._eventsCount===0)this._events=objectCreate(null);else delete events[type]}return this}if(arguments.length===0){var keys=objectKeys(events);var key;for(i=0;i=0;i--){this.removeListener(type,listeners[i])}}return this};function _listeners(target,type,unwrap){var events=target._events;if(!events)return[];var evlistener=events[type];if(!evlistener)return[];if(typeof evlistener==="function")return unwrap?[evlistener.listener||evlistener]:[evlistener];return unwrap?unwrapListeners(evlistener):arrayClone(evlistener,evlistener.length)}EventEmitter.prototype.listeners=function listeners(type){return _listeners(this,type,true)};EventEmitter.prototype.rawListeners=function rawListeners(type){return _listeners(this,type,false)};EventEmitter.listenerCount=function(emitter,type){if(typeof emitter.listenerCount==="function"){return emitter.listenerCount(type)}else{return listenerCount.call(emitter,type)}};EventEmitter.prototype.listenerCount=listenerCount;function listenerCount(type){var events=this._events;if(events){var evlistener=events[type];if(typeof evlistener==="function"){return 1}else if(evlistener){return evlistener.length}}return 0}EventEmitter.prototype.eventNames=function eventNames(){return this._eventsCount>0?Reflect.ownKeys(this._events):[]};function spliceOne(list,index){for(var i=index,k=i+1,n=list.length;k>1;var nBits=-7;var i=isLE?nBytes-1:0;var d=isLE?-1:1;var s=buffer[offset+i];i+=d;e=s&(1<<-nBits)-1;s>>=-nBits;nBits+=eLen;for(;nBits>0;e=e*256+buffer[offset+i],i+=d,nBits-=8){}m=e&(1<<-nBits)-1;e>>=-nBits;nBits+=mLen;for(;nBits>0;m=m*256+buffer[offset+i],i+=d,nBits-=8){}if(e===0){e=1-eBias}else if(e===eMax){return m?NaN:(s?-1:1)*Infinity}else{m=m+Math.pow(2,mLen);e=e-eBias}return(s?-1:1)*m*Math.pow(2,e-mLen)};exports.write=function(buffer,value,offset,isLE,mLen,nBytes){var e,m,c;var eLen=nBytes*8-mLen-1;var eMax=(1<>1;var rt=mLen===23?Math.pow(2,-24)-Math.pow(2,-77):0;var i=isLE?0:nBytes-1;var d=isLE?1:-1;var s=value<0||value===0&&1/value<0?1:0;value=Math.abs(value);if(isNaN(value)||value===Infinity){m=isNaN(value)?1:0;e=eMax}else{e=Math.floor(Math.log(value)/Math.LN2);if(value*(c=Math.pow(2,-e))<1){e--;c*=2}if(e+eBias>=1){value+=rt/c}else{value+=rt*Math.pow(2,1-eBias)}if(value*c>=2){e++;c/=2}if(e+eBias>=eMax){m=0;e=eMax}else if(e+eBias>=1){m=(value*c-1)*Math.pow(2,mLen);e=e+eBias}else{m=value*Math.pow(2,eBias-1)*Math.pow(2,mLen);e=0}}for(;mLen>=8;buffer[offset+i]=m&255,i+=d,m/=256,mLen-=8){}e=e<0;buffer[offset+i]=e&255,i+=d,e/=256,eLen-=8){}buffer[offset+i-d]|=s*128}},{}],18:[function(require,module,exports){if(typeof Object.create==="function"){module.exports=function inherits(ctor,superCtor){if(superCtor){ctor.super_=superCtor;ctor.prototype=Object.create(superCtor.prototype,{constructor:{value:ctor,enumerable:false,writable:true,configurable:true}})}}}else{module.exports=function inherits(ctor,superCtor){if(superCtor){ctor.super_=superCtor;var TempCtor=function(){};TempCtor.prototype=superCtor.prototype;ctor.prototype=new TempCtor;ctor.prototype.constructor=ctor}}}},{}],19:[function(require,module,exports){module.exports=function(obj){return obj!=null&&(isBuffer(obj)||isSlowBuffer(obj)||!!obj._isBuffer)};function isBuffer(obj){return!!obj.constructor&&typeof obj.constructor.isBuffer==="function"&&obj.constructor.isBuffer(obj)}function isSlowBuffer(obj){return typeof obj.readFloatLE==="function"&&typeof obj.slice==="function"&&isBuffer(obj.slice(0,0))}},{}],20:[function(require,module,exports){var toString={}.toString;module.exports=Array.isArray||function(arr){return toString.call(arr)=="[object Array]"}},{}],21:[function(require,module,exports){"use strict";var getOwnPropertySymbols=Object.getOwnPropertySymbols;var hasOwnProperty=Object.prototype.hasOwnProperty;var propIsEnumerable=Object.prototype.propertyIsEnumerable;function toObject(val){if(val===null||val===undefined){throw new TypeError("Object.assign cannot be called with null or undefined")}return Object(val)}function shouldUseNative(){try{if(!Object.assign){return false}var test1=new String("abc");test1[5]="de";if(Object.getOwnPropertyNames(test1)[0]==="5"){return false}var test2={};for(var i=0;i<10;i++){test2["_"+String.fromCharCode(i)]=i}var order2=Object.getOwnPropertyNames(test2).map(function(n){return test2[n]});if(order2.join("")!=="0123456789"){return false}var test3={};"abcdefghijklmnopqrst".split("").forEach(function(letter){test3[letter]=letter});if(Object.keys(Object.assign({},test3)).join("")!=="abcdefghijklmnopqrst"){return false}return true}catch(err){return false}}module.exports=shouldUseNative()?Object.assign:function(target,source){var from;var to=toObject(target);var symbols;for(var s=1;s1){for(var i=1;i0){if(typeof chunk!=="string"&&!state.objectMode&&Object.getPrototypeOf(chunk)!==Buffer.prototype){chunk=_uint8ArrayToBuffer(chunk)}if(addToFront){if(state.endEmitted)stream.emit("error",new Error("stream.unshift() after end event"));else addChunk(stream,state,chunk,true)}else if(state.ended){stream.emit("error",new Error("stream.push() after EOF"))}else{state.reading=false;if(state.decoder&&!encoding){chunk=state.decoder.write(chunk);if(state.objectMode||chunk.length!==0)addChunk(stream,state,chunk,false);else maybeReadMore(stream,state)}else{addChunk(stream,state,chunk,false)}}}else if(!addToFront){state.reading=false}}return needMoreData(state)}function addChunk(stream,state,chunk,addToFront){if(state.flowing&&state.length===0&&!state.sync){stream.emit("data",chunk);stream.read(0)}else{state.length+=state.objectMode?1:chunk.length;if(addToFront)state.buffer.unshift(chunk);else state.buffer.push(chunk);if(state.needReadable)emitReadable(stream)}maybeReadMore(stream,state)}function chunkInvalid(state,chunk){var er;if(!_isUint8Array(chunk)&&typeof chunk!=="string"&&chunk!==undefined&&!state.objectMode){er=new TypeError("Invalid non-string/buffer chunk")}return er}function needMoreData(state){return!state.ended&&(state.needReadable||state.length=MAX_HWM){n=MAX_HWM}else{n--;n|=n>>>1;n|=n>>>2;n|=n>>>4;n|=n>>>8;n|=n>>>16;n++}return n}function howMuchToRead(n,state){if(n<=0||state.length===0&&state.ended)return 0;if(state.objectMode)return 1;if(n!==n){if(state.flowing&&state.length)return state.buffer.head.data.length;else return state.length}if(n>state.highWaterMark)state.highWaterMark=computeNewHighWaterMark(n);if(n<=state.length)return n;if(!state.ended){state.needReadable=true;return 0}return state.length}Readable.prototype.read=function(n){debug("read",n);n=parseInt(n,10);var state=this._readableState;var nOrig=n;if(n!==0)state.emittedReadable=false;if(n===0&&state.needReadable&&(state.length>=state.highWaterMark||state.ended)){debug("read: emitReadable",state.length,state.ended);if(state.length===0&&state.ended)endReadable(this);else emitReadable(this);return null}n=howMuchToRead(n,state);if(n===0&&state.ended){if(state.length===0)endReadable(this);return null}var doRead=state.needReadable;debug("need readable",doRead);if(state.length===0||state.length-n0)ret=fromList(n,state);else ret=null;if(ret===null){state.needReadable=true;n=0}else{state.length-=n}if(state.length===0){if(!state.ended)state.needReadable=true;if(nOrig!==n&&state.ended)endReadable(this)}if(ret!==null)this.emit("data",ret);return ret};function onEofChunk(stream,state){if(state.ended)return;if(state.decoder){var chunk=state.decoder.end();if(chunk&&chunk.length){state.buffer.push(chunk);state.length+=state.objectMode?1:chunk.length}}state.ended=true;emitReadable(stream)}function emitReadable(stream){var state=stream._readableState;state.needReadable=false;if(!state.emittedReadable){debug("emitReadable",state.flowing);state.emittedReadable=true;if(state.sync)pna.nextTick(emitReadable_,stream);else emitReadable_(stream)}}function emitReadable_(stream){debug("emit readable");stream.emit("readable");flow(stream)}function maybeReadMore(stream,state){if(!state.readingMore){state.readingMore=true;pna.nextTick(maybeReadMore_,stream,state)}}function maybeReadMore_(stream,state){var len=state.length;while(!state.reading&&!state.flowing&&!state.ended&&state.length1&&indexOf(state.pipes,dest)!==-1)&&!cleanedUp){debug("false write response, pause",src._readableState.awaitDrain);src._readableState.awaitDrain++;increasedAwaitDrain=true}src.pause()}}function onerror(er){debug("onerror",er);unpipe();dest.removeListener("error",onerror);if(EElistenerCount(dest,"error")===0)dest.emit("error",er)}prependListener(dest,"error",onerror);function onclose(){dest.removeListener("finish",onfinish);unpipe()}dest.once("close",onclose);function onfinish(){debug("onfinish");dest.removeListener("close",onclose);unpipe()}dest.once("finish",onfinish);function unpipe(){debug("unpipe");src.unpipe(dest)}dest.emit("pipe",src);if(!state.flowing){debug("pipe resume");src.resume()}return dest};function pipeOnDrain(src){return function(){var state=src._readableState;debug("pipeOnDrain",state.awaitDrain);if(state.awaitDrain)state.awaitDrain--;if(state.awaitDrain===0&&EElistenerCount(src,"data")){state.flowing=true;flow(src)}}}Readable.prototype.unpipe=function(dest){var state=this._readableState;var unpipeInfo={hasUnpiped:false};if(state.pipesCount===0)return this;if(state.pipesCount===1){if(dest&&dest!==state.pipes)return this;if(!dest)dest=state.pipes;state.pipes=null;state.pipesCount=0;state.flowing=false;if(dest)dest.emit("unpipe",this,unpipeInfo);return this}if(!dest){var dests=state.pipes;var len=state.pipesCount;state.pipes=null;state.pipesCount=0;state.flowing=false;for(var i=0;i=state.length){if(state.decoder)ret=state.buffer.join("");else if(state.buffer.length===1)ret=state.buffer.head.data;else ret=state.buffer.concat(state.length);state.buffer.clear()}else{ret=fromListPartial(n,state.buffer,state.decoder)}return ret}function fromListPartial(n,list,hasStrings){var ret;if(nstr.length?str.length:n;if(nb===str.length)ret+=str;else ret+=str.slice(0,n);n-=nb;if(n===0){if(nb===str.length){++c;if(p.next)list.head=p.next;else list.head=list.tail=null}else{list.head=p;p.data=str.slice(nb)}break}++c}list.length-=c;return ret}function copyFromBuffer(n,list){var ret=Buffer.allocUnsafe(n);var p=list.head;var c=1;p.data.copy(ret);n-=p.data.length;while(p=p.next){var buf=p.data;var nb=n>buf.length?buf.length:n;buf.copy(ret,ret.length-n,0,nb);n-=nb;if(n===0){if(nb===buf.length){++c;if(p.next)list.head=p.next;else list.head=list.tail=null}else{list.head=p;p.data=buf.slice(nb)}break}++c}list.length-=c;return ret}function endReadable(stream){var state=stream._readableState;if(state.length>0)throw new Error('"endReadable()" called on non-empty stream');if(!state.endEmitted){state.ended=true;pna.nextTick(endReadableNT,state,stream)}}function endReadableNT(state,stream){if(!state.endEmitted&&state.length===0){state.endEmitted=true;stream.readable=false;stream.emit("end")}}function indexOf(xs,x){for(var i=0,l=xs.length;i-1?setImmediate:pna.nextTick;var Duplex;Writable.WritableState=WritableState;var util=Object.create(require("core-util-is"));util.inherits=require("inherits");var internalUtil={deprecate:require("util-deprecate")};var Stream=require("./internal/streams/stream");var Buffer=require("safe-buffer").Buffer;var OurUint8Array=global.Uint8Array||function(){};function _uint8ArrayToBuffer(chunk){return Buffer.from(chunk)}function _isUint8Array(obj){return Buffer.isBuffer(obj)||obj instanceof OurUint8Array}var destroyImpl=require("./internal/streams/destroy");util.inherits(Writable,Stream);function nop(){}function WritableState(options,stream){Duplex=Duplex||require("./_stream_duplex");options=options||{};var isDuplex=stream instanceof Duplex;this.objectMode=!!options.objectMode;if(isDuplex)this.objectMode=this.objectMode||!!options.writableObjectMode;var hwm=options.highWaterMark;var writableHwm=options.writableHighWaterMark;var defaultHwm=this.objectMode?16:16*1024;if(hwm||hwm===0)this.highWaterMark=hwm;else if(isDuplex&&(writableHwm||writableHwm===0))this.highWaterMark=writableHwm;else this.highWaterMark=defaultHwm;this.highWaterMark=Math.floor(this.highWaterMark);this.finalCalled=false;this.needDrain=false;this.ending=false;this.ended=false;this.finished=false;this.destroyed=false;var noDecode=options.decodeStrings===false;this.decodeStrings=!noDecode;this.defaultEncoding=options.defaultEncoding||"utf8";this.length=0;this.writing=false;this.corked=0;this.sync=true;this.bufferProcessing=false;this.onwrite=function(er){onwrite(stream,er)};this.writecb=null;this.writelen=0;this.bufferedRequest=null;this.lastBufferedRequest=null;this.pendingcb=0;this.prefinished=false;this.errorEmitted=false;this.bufferedRequestCount=0;this.corkedRequestsFree=new CorkedRequest(this)}WritableState.prototype.getBuffer=function getBuffer(){var current=this.bufferedRequest;var out=[];while(current){out.push(current);current=current.next}return out};(function(){try{Object.defineProperty(WritableState.prototype,"buffer",{get:internalUtil.deprecate(function(){return this.getBuffer()},"_writableState.buffer is deprecated. Use _writableState.getBuffer "+"instead.","DEP0003")})}catch(_){}})();var realHasInstance;if(typeof Symbol==="function"&&Symbol.hasInstance&&typeof Function.prototype[Symbol.hasInstance]==="function"){realHasInstance=Function.prototype[Symbol.hasInstance];Object.defineProperty(Writable,Symbol.hasInstance,{value:function(object){if(realHasInstance.call(this,object))return true;if(this!==Writable)return false;return object&&object._writableState instanceof WritableState}})}else{realHasInstance=function(object){return object instanceof this}}function Writable(options){Duplex=Duplex||require("./_stream_duplex");if(!realHasInstance.call(Writable,this)&&!(this instanceof Duplex)){return new Writable(options)}this._writableState=new WritableState(options,this);this.writable=true;if(options){if(typeof options.write==="function")this._write=options.write;if(typeof options.writev==="function")this._writev=options.writev;if(typeof options.destroy==="function")this._destroy=options.destroy;if(typeof options.final==="function")this._final=options.final}Stream.call(this)}Writable.prototype.pipe=function(){this.emit("error",new Error("Cannot pipe, not readable"))};function writeAfterEnd(stream,cb){var er=new Error("write after end");stream.emit("error",er);pna.nextTick(cb,er)}function validChunk(stream,state,chunk,cb){var valid=true;var er=false;if(chunk===null){er=new TypeError("May not write null values to stream")}else if(typeof chunk!=="string"&&chunk!==undefined&&!state.objectMode){er=new TypeError("Invalid non-string/buffer chunk")}if(er){stream.emit("error",er);pna.nextTick(cb,er);valid=false}return valid}Writable.prototype.write=function(chunk,encoding,cb){var state=this._writableState;var ret=false;var isBuf=!state.objectMode&&_isUint8Array(chunk);if(isBuf&&!Buffer.isBuffer(chunk)){chunk=_uint8ArrayToBuffer(chunk)}if(typeof encoding==="function"){cb=encoding;encoding=null}if(isBuf)encoding="buffer";else if(!encoding)encoding=state.defaultEncoding;if(typeof cb!=="function")cb=nop;if(state.ended)writeAfterEnd(this,cb);else if(isBuf||validChunk(this,state,chunk,cb)){state.pendingcb++;ret=writeOrBuffer(this,state,isBuf,chunk,encoding,cb)}return ret};Writable.prototype.cork=function(){var state=this._writableState;state.corked++};Writable.prototype.uncork=function(){var state=this._writableState;if(state.corked){state.corked--;if(!state.writing&&!state.corked&&!state.finished&&!state.bufferProcessing&&state.bufferedRequest)clearBuffer(this,state)}};Writable.prototype.setDefaultEncoding=function setDefaultEncoding(encoding){if(typeof encoding==="string")encoding=encoding.toLowerCase();if(!(["hex","utf8","utf-8","ascii","binary","base64","ucs2","ucs-2","utf16le","utf-16le","raw"].indexOf((encoding+"").toLowerCase())>-1))throw new TypeError("Unknown encoding: "+encoding);this._writableState.defaultEncoding=encoding;return this};function decodeChunk(state,chunk,encoding){if(!state.objectMode&&state.decodeStrings!==false&&typeof chunk==="string"){chunk=Buffer.from(chunk,encoding)}return chunk}Object.defineProperty(Writable.prototype,"writableHighWaterMark",{enumerable:false,get:function(){return this._writableState.highWaterMark}});function writeOrBuffer(stream,state,isBuf,chunk,encoding,cb){if(!isBuf){var newChunk=decodeChunk(state,chunk,encoding);if(chunk!==newChunk){isBuf=true;encoding="buffer";chunk=newChunk}}var len=state.objectMode?1:chunk.length;state.length+=len;var ret=state.length0)this.tail.next=entry;else this.head=entry;this.tail=entry;++this.length};BufferList.prototype.unshift=function unshift(v){var entry={data:v,next:this.head};if(this.length===0)this.tail=entry;this.head=entry;++this.length};BufferList.prototype.shift=function shift(){if(this.length===0)return;var ret=this.head.data;if(this.length===1)this.head=this.tail=null;else this.head=this.head.next;--this.length;return ret};BufferList.prototype.clear=function clear(){this.head=this.tail=null;this.length=0};BufferList.prototype.join=function join(s){if(this.length===0)return"";var p=this.head;var ret=""+p.data;while(p=p.next){ret+=s+p.data}return ret};BufferList.prototype.concat=function concat(n){if(this.length===0)return Buffer.alloc(0);if(this.length===1)return this.head.data;var ret=Buffer.allocUnsafe(n>>>0);var p=this.head;var i=0;while(p){copyBuffer(p.data,ret,i);i+=p.data.length;p=p.next}return ret};return BufferList}();if(util&&util.inspect&&util.inspect.custom){module.exports.prototype[util.inspect.custom]=function(){var obj=util.inspect({length:this.length});return this.constructor.name+" "+obj}}},{"safe-buffer":32,util:13}],30:[function(require,module,exports){"use strict";var pna=require("process-nextick-args");function destroy(err,cb){var _this=this;var readableDestroyed=this._readableState&&this._readableState.destroyed;var writableDestroyed=this._writableState&&this._writableState.destroyed;if(readableDestroyed||writableDestroyed){if(cb){cb(err)}else if(err&&(!this._writableState||!this._writableState.errorEmitted)){pna.nextTick(emitErrorNT,this,err)}return this}if(this._readableState){this._readableState.destroyed=true}if(this._writableState){this._writableState.destroyed=true}this._destroy(err||null,function(err){if(!cb&&err){pna.nextTick(emitErrorNT,_this,err);if(_this._writableState){_this._writableState.errorEmitted=true}}else if(cb){cb(err)}});return this}function undestroy(){if(this._readableState){this._readableState.destroyed=false;this._readableState.reading=false;this._readableState.ended=false;this._readableState.endEmitted=false}if(this._writableState){this._writableState.destroyed=false;this._writableState.ended=false;this._writableState.ending=false;this._writableState.finished=false;this._writableState.errorEmitted=false}}function emitErrorNT(self,err){self.emit("error",err)}module.exports={destroy:destroy,undestroy:undestroy}},{"process-nextick-args":22}],31:[function(require,module,exports){module.exports=require("events").EventEmitter},{events:16}],32:[function(require,module,exports){var buffer=require("buffer");var Buffer=buffer.Buffer;function copyProps(src,dst){for(var key in src){dst[key]=src[key]}}if(Buffer.from&&Buffer.alloc&&Buffer.allocUnsafe&&Buffer.allocUnsafeSlow){module.exports=buffer}else{copyProps(buffer,exports);exports.Buffer=SafeBuffer}function SafeBuffer(arg,encodingOrOffset,length){return Buffer(arg,encodingOrOffset,length)}copyProps(Buffer,SafeBuffer);SafeBuffer.from=function(arg,encodingOrOffset,length){if(typeof arg==="number"){throw new TypeError("Argument must not be a number")}return Buffer(arg,encodingOrOffset,length)};SafeBuffer.alloc=function(size,fill,encoding){if(typeof size!=="number"){throw new TypeError("Argument must be a number")}var buf=Buffer(size);if(fill!==undefined){if(typeof encoding==="string"){buf.fill(fill,encoding)}else{buf.fill(fill)}}else{buf.fill(0)}return buf};SafeBuffer.allocUnsafe=function(size){if(typeof size!=="number"){throw new TypeError("Argument must be a number")}return Buffer(size)};SafeBuffer.allocUnsafeSlow=function(size){if(typeof size!=="number"){throw new TypeError("Argument must be a number")}return buffer.SlowBuffer(size)}},{buffer:14}],33:[function(require,module,exports){"use strict";var Buffer=require("safe-buffer").Buffer;var isEncoding=Buffer.isEncoding||function(encoding){encoding=""+encoding;switch(encoding&&encoding.toLowerCase()){case"hex":case"utf8":case"utf-8":case"ascii":case"binary":case"base64":case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":case"raw":return true;default:return false}};function _normalizeEncoding(enc){if(!enc)return"utf8";var retried;while(true){switch(enc){case"utf8":case"utf-8":return"utf8";case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return"utf16le";case"latin1":case"binary":return"latin1";case"base64":case"ascii":case"hex":return enc;default:if(retried)return;enc=(""+enc).toLowerCase();retried=true}}}function normalizeEncoding(enc){var nenc=_normalizeEncoding(enc);if(typeof nenc!=="string"&&(Buffer.isEncoding===isEncoding||!isEncoding(enc)))throw new Error("Unknown encoding: "+enc);return nenc||enc}exports.StringDecoder=StringDecoder;function StringDecoder(encoding){this.encoding=normalizeEncoding(encoding);var nb;switch(this.encoding){case"utf16le":this.text=utf16Text;this.end=utf16End;nb=4;break;case"utf8":this.fillLast=utf8FillLast;nb=4;break;case"base64":this.text=base64Text;this.end=base64End;nb=3;break;default:this.write=simpleWrite;this.end=simpleEnd;return}this.lastNeed=0;this.lastTotal=0;this.lastChar=Buffer.allocUnsafe(nb)}StringDecoder.prototype.write=function(buf){if(buf.length===0)return"";var r;var i;if(this.lastNeed){r=this.fillLast(buf);if(r===undefined)return"";i=this.lastNeed;this.lastNeed=0}else{i=0}if(i>5===6)return 2;else if(byte>>4===14)return 3;else if(byte>>3===30)return 4;return byte>>6===2?-1:-2}function utf8CheckIncomplete(self,buf,i){var j=buf.length-1;if(j=0){if(nb>0)self.lastNeed=nb-1;return nb}if(--j=0){if(nb>0)self.lastNeed=nb-2;return nb}if(--j=0){if(nb>0){if(nb===2)nb=0;else self.lastNeed=nb-3}return nb}return 0}function utf8CheckExtraBytes(self,buf,p){if((buf[0]&192)!==128){self.lastNeed=0;return"�"}if(self.lastNeed>1&&buf.length>1){if((buf[1]&192)!==128){self.lastNeed=1;return"�"}if(self.lastNeed>2&&buf.length>2){if((buf[2]&192)!==128){self.lastNeed=2;return"�"}}}}function utf8FillLast(buf){var p=this.lastTotal-this.lastNeed;var r=utf8CheckExtraBytes(this,buf,p);if(r!==undefined)return r;if(this.lastNeed<=buf.length){buf.copy(this.lastChar,p,0,this.lastNeed);return this.lastChar.toString(this.encoding,0,this.lastTotal)}buf.copy(this.lastChar,p,0,buf.length);this.lastNeed-=buf.length}function utf8Text(buf,i){var total=utf8CheckIncomplete(this,buf,i);if(!this.lastNeed)return buf.toString("utf8",i);this.lastTotal=total;var end=buf.length-(total-this.lastNeed);buf.copy(this.lastChar,0,end);return buf.toString("utf8",i,end)}function utf8End(buf){var r=buf&&buf.length?this.write(buf):"";if(this.lastNeed)return r+"�";return r}function utf16Text(buf,i){if((buf.length-i)%2===0){var r=buf.toString("utf16le",i);if(r){var c=r.charCodeAt(r.length-1);if(c>=55296&&c<=56319){this.lastNeed=2;this.lastTotal=4;this.lastChar[0]=buf[buf.length-2];this.lastChar[1]=buf[buf.length-1];return r.slice(0,-1)}}return r}this.lastNeed=1;this.lastTotal=2;this.lastChar[0]=buf[buf.length-1];return buf.toString("utf16le",i,buf.length-1)}function utf16End(buf){var r=buf&&buf.length?this.write(buf):"";if(this.lastNeed){var end=this.lastTotal-this.lastNeed;return r+this.lastChar.toString("utf16le",0,end)}return r}function base64Text(buf,i){var n=(buf.length-i)%3;if(n===0)return buf.toString("base64",i);this.lastNeed=3-n;this.lastTotal=3;if(n===1){this.lastChar[0]=buf[buf.length-1]}else{this.lastChar[0]=buf[buf.length-2];this.lastChar[1]=buf[buf.length-1]}return buf.toString("base64",i,buf.length-n)}function base64End(buf){var r=buf&&buf.length?this.write(buf):"";if(this.lastNeed)return r+this.lastChar.toString("base64",0,3-this.lastNeed);return r}function simpleWrite(buf){return buf.toString(this.encoding)}function simpleEnd(buf){return buf&&buf.length?this.write(buf):""}},{"safe-buffer":32}],34:[function(require,module,exports){exports=module.exports=require("./lib/_stream_readable.js");exports.Stream=exports;exports.Readable=exports;exports.Writable=require("./lib/_stream_writable.js");exports.Duplex=require("./lib/_stream_duplex.js");exports.Transform=require("./lib/_stream_transform.js");exports.PassThrough=require("./lib/_stream_passthrough.js")},{"./lib/_stream_duplex.js":24,"./lib/_stream_passthrough.js":25,"./lib/_stream_readable.js":26,"./lib/_stream_transform.js":27,"./lib/_stream_writable.js":28}],35:[function(require,module,exports){var buffer=require("buffer");var Buffer=buffer.Buffer;function copyProps(src,dst){for(var key in src){dst[key]=src[key]}}if(Buffer.from&&Buffer.alloc&&Buffer.allocUnsafe&&Buffer.allocUnsafeSlow){module.exports=buffer}else{copyProps(buffer,exports);exports.Buffer=SafeBuffer}function SafeBuffer(arg,encodingOrOffset,length){return Buffer(arg,encodingOrOffset,length)}SafeBuffer.prototype=Object.create(Buffer.prototype);copyProps(Buffer,SafeBuffer);SafeBuffer.from=function(arg,encodingOrOffset,length){if(typeof arg==="number"){throw new TypeError("Argument must not be a number")}return Buffer(arg,encodingOrOffset,length)};SafeBuffer.alloc=function(size,fill,encoding){if(typeof size!=="number"){throw new TypeError("Argument must be a number")}var buf=Buffer(size);if(fill!==undefined){if(typeof encoding==="string"){buf.fill(fill,encoding)}else{buf.fill(fill)}}else{buf.fill(0)}return buf};SafeBuffer.allocUnsafe=function(size){if(typeof size!=="number"){throw new TypeError("Argument must be a number")}return Buffer(size)};SafeBuffer.allocUnsafeSlow=function(size){if(typeof size!=="number"){throw new TypeError("Argument must be a number")}return buffer.SlowBuffer(size)}},{buffer:14}],36:[function(require,module,exports){(function(setImmediate,clearImmediate){(function(){var nextTick=require("process/browser.js").nextTick;var apply=Function.prototype.apply;var slice=Array.prototype.slice;var immediateIds={};var nextImmediateId=0;exports.setTimeout=function(){return new Timeout(apply.call(setTimeout,window,arguments),clearTimeout)};exports.setInterval=function(){return new Timeout(apply.call(setInterval,window,arguments),clearInterval)};exports.clearTimeout=exports.clearInterval=function(timeout){timeout.close()};function Timeout(id,clearFn){this._id=id;this._clearFn=clearFn}Timeout.prototype.unref=Timeout.prototype.ref=function(){};Timeout.prototype.close=function(){this._clearFn.call(window,this._id)};exports.enroll=function(item,msecs){clearTimeout(item._idleTimeoutId);item._idleTimeout=msecs};exports.unenroll=function(item){clearTimeout(item._idleTimeoutId);item._idleTimeout=-1};exports._unrefActive=exports.active=function(item){clearTimeout(item._idleTimeoutId);var msecs=item._idleTimeout;if(msecs>=0){item._idleTimeoutId=setTimeout(function onTimeout(){if(item._onTimeout)item._onTimeout()},msecs)}};exports.setImmediate=typeof setImmediate==="function"?setImmediate:function(fn){var id=nextImmediateId++;var args=arguments.length<2?false:slice.call(arguments,1);immediateIds[id]=true;nextTick(function onNextTick(){if(immediateIds[id]){if(args){fn.apply(null,args)}else{fn.call(null)}exports.clearImmediate(id)}});return id};exports.clearImmediate=typeof clearImmediate==="function"?clearImmediate:function(id){delete immediateIds[id]}}).call(this)}).call(this,require("timers").setImmediate,require("timers").clearImmediate)},{"process/browser.js":23,timers:36}],37:[function(require,module,exports){(function(global){(function(){module.exports=deprecate;function deprecate(fn,msg){if(config("noDeprecation")){return fn}var warned=false;function deprecated(){if(!warned){if(config("throwDeprecation")){throw new Error(msg)}else if(config("traceDeprecation")){console.trace(msg)}else{console.warn(msg)}warned=true}return fn.apply(this,arguments)}return deprecated}function config(name){try{if(!global.localStorage)return false}catch(_){return false}var val=global.localStorage[name];if(null==val)return false;return String(val).toLowerCase()==="true"}}).call(this)}).call(this,typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{}],38:[function(require,module,exports){arguments[4][8][0].apply(exports,arguments)},{dup:8}],39:[function(require,module,exports){arguments[4][9][0].apply(exports,arguments)},{dup:9}],40:[function(require,module,exports){arguments[4][10][0].apply(exports,arguments)},{"./support/isBuffer":39,_process:23,dup:10,inherits:38}]},{},[1])(1)}); \ No newline at end of file