babel-multi-env

babel CLI replacement with multiple node version support by babel-preset-env and babel-plugin-transform-runtime. Useful for node.js libraries/modules

Usage

Transforms:

example/src/index.js

import fs from "fs";
import promisify from "util.promisify";

export async function demoBumpVersion(nextVersion = "1.0.0") {
  const content = await promisify(fs.readFile)("package.json", "utf8");
  const json = JSON.parse(content);
  json.version = nextVersion;
  await promisify(fs.writeFile)(
    "package.json",
    JSON.stringify(json, null, 4),
    "utf8"
  );
  return () => console.log(`Successfully bumped version to: ${nextVersion}`);
}

with the command:

cd example
yarn babel-multi-env --multi-versions 8.0.0 6.0.0 4.0.0 0.12.0 0.10.0 --given src/index.js --out-dir lib

and output these files:

example/lib/index.js
example/lib/index__0.10.0__.js
example/lib/index__0.12.0__.js
example/lib/index__4.0.0__.js
example/lib/index__6.0.0__.js
example/lib/index__8.0.0__.js

where

example/lib/index.js

var gte = require("semver").gte;

var version = process.version;

if (gte(version, "8.0.0")) {
  module.exports = require("./index__8.0.0__.js");
} else if (gte(version, "6.0.0")) {
  module.exports = require("./index__6.0.0__.js");
} else if (gte(version, "4.0.0")) {
  module.exports = require("./index__4.0.0__.js");
} else if (gte(version, "0.12.0")) {
  module.exports = require("./index__0.12.0__.js");
} else {
  module.exports = require("./index__0.10.0__.js");
}

example/lib/index8.0.0.js

"use strict";
var _interopRequireDefault = require("babel-runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.demoBumpVersion = demoBumpVersion;
var _stringify = _interopRequireDefault(
  require("babel-runtime/core-js/json/stringify")
);
var _fs = _interopRequireDefault(require("fs"));
var _util = _interopRequireDefault(require("util.promisify"));
async function demoBumpVersion(nextVersion = "1.0.0") {
  const content = await (0, _util.default)(_fs.default.readFile)(
    "package.json",
    "utf8"
  );
  const json = JSON.parse(content);
  json.version = nextVersion;
  await (0, _util.default)(_fs.default.writeFile)(
    "package.json",
    (0, _stringify.default)(json, null, 4),
    "utf8"
  );
  return () => console.log(`Successfully bumped version to: ${nextVersion}`);
}

example/lib/index6.0.0.js

"use strict";
var _interopRequireDefault = require("babel-runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.demoBumpVersion = void 0;
var _stringify = _interopRequireDefault(
  require("babel-runtime/core-js/json/stringify")
);
var _asyncToGenerator2 = _interopRequireDefault(
  require("babel-runtime/helpers/asyncToGenerator")
);
var _fs = _interopRequireDefault(require("fs"));
var _util = _interopRequireDefault(require("util.promisify"));
let demoBumpVersion = (() => {
  var _ref = (0, _asyncToGenerator2.default)(function*(nextVersion = "1.0.0") {
    const content = yield (0, _util.default)(_fs.default.readFile)(
      "package.json",
      "utf8"
    );
    const json = JSON.parse(content);
    json.version = nextVersion;
    yield (0,
    _util.default)(_fs.default.writeFile)("package.json", (0, _stringify.default)(json, null, 4), "utf8");
    return () => console.log(`Successfully bumped version to: ${nextVersion}`);
  });
  return function demoBumpVersion() {
    return _ref.apply(this, arguments);
  };
})();
exports.demoBumpVersion = demoBumpVersion;

……and you get the idea.

More sample code for node@4, node@0.12 and node@0.10

/* lib/index__4.0.0__.js */
"use strict";
var _interopRequireDefault = require("babel-runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.demoBumpVersion = void 0;
var _regenerator = _interopRequireDefault(require("babel-runtime/regenerator"));
var _stringify = _interopRequireDefault(require("babel-runtime/core-js/json/stringify"));
var _asyncToGenerator2 = _interopRequireDefault(require("babel-runtime/helpers/asyncToGenerator"));
var _fs = _interopRequireDefault(require("fs"));
var _util = _interopRequireDefault(require("util.promisify"));

var demoBumpVersion = function () {
  var _ref = (0, _asyncToGenerator2.default)(
  /*#__PURE__*/
  _regenerator.default.mark(function _callee() {
    var nextVersion,
        content,
        json,
        _args = arguments;
    return _regenerator.default.wrap(function _callee$(_context) {
      while (1) {
        switch (_context.prev = _context.next) {
          case 0:
            nextVersion = _args.length > 0 && _args[0] !== undefined ? _args[0] : "1.0.0";
            _context.next = 3;
            return (0, _util.default)(_fs.default.readFile)("package.json", "utf8");

          case 3:
            content = _context.sent;
            json = JSON.parse(content);
            json.version = nextVersion;
            _context.next = 8;
            return (0, _util.default)(_fs.default.writeFile)("package.json", (0, _stringify.default)(json, null, 4), "utf8");

          case 8:
            return _context.abrupt("return", function () {
              return console.log(`Successfully bumped version to: ${nextVersion}`);
            });

          case 9:
          case "end":
            return _context.stop();
        }
      }
    }, _callee, this);
  }));

  return function demoBumpVersion() {
    return _ref.apply(this, arguments);
  };
}();
exports.demoBumpVersion = demoBumpVersion;

/* lib/index__0.12.0__.js */
"use strict";
var _interopRequireDefault = require("babel-runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.demoBumpVersion = void 0;
var _regenerator = _interopRequireDefault(require("babel-runtime/regenerator"));
var _stringify = _interopRequireDefault(require("babel-runtime/core-js/json/stringify"));
var _asyncToGenerator2 = _interopRequireDefault(require("babel-runtime/helpers/asyncToGenerator"));
var _fs = _interopRequireDefault(require("fs"));
var _util = _interopRequireDefault(require("util.promisify"));
var demoBumpVersion = function () {
  var _ref = (0, _asyncToGenerator2.default)(
  /*#__PURE__*/
  _regenerator.default.mark(function _callee() {
    var nextVersion,
        content,
        json,
        _args = arguments;
    return _regenerator.default.wrap(function _callee$(_context) {
      while (1) {
        switch (_context.prev = _context.next) {
          case 0:
            nextVersion = _args.length > 0 && _args[0] !== undefined ? _args[0] : "1.0.0";
            _context.next = 3;
            return (0, _util.default)(_fs.default.readFile)("package.json", "utf8");

          case 3:
            content = _context.sent;
            json = JSON.parse(content);
            json.version = nextVersion;
            _context.next = 8;
            return (0, _util.default)(_fs.default.writeFile)("package.json", (0, _stringify.default)(json, null, 4), "utf8");

          case 8:
            return _context.abrupt("return", function () {
              return console.log("Successfully bumped version to: ".concat(nextVersion));
            });

          case 9:
          case "end":
            return _context.stop();
        }
      }
    }, _callee, this);
  }));

  return function demoBumpVersion() {
    return _ref.apply(this, arguments);
  };
}();
exports.demoBumpVersion = demoBumpVersion;

/* lib/index__0.10.0__.js */
"use strict";
var _interopRequireDefault = require("babel-runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.demoBumpVersion = void 0;
var _regenerator = _interopRequireDefault(require("babel-runtime/regenerator"));
var _stringify = _interopRequireDefault(require("babel-runtime/core-js/json/stringify"));
var _asyncToGenerator2 = _interopRequireDefault(require("babel-runtime/helpers/asyncToGenerator"));
var _fs = _interopRequireDefault(require("fs"));
var _util = _interopRequireDefault(require("util.promisify"));
var demoBumpVersion = function () {
  var _ref = (0, _asyncToGenerator2.default)(
  /*#__PURE__*/
  _regenerator.default.mark(function _callee() {
    var nextVersion,
        content,
        json,
        _args = arguments;
    return _regenerator.default.wrap(function _callee$(_context) {
      while (1) {
        switch (_context.prev = _context.next) {
          case 0:
            nextVersion = _args.length > 0 && _args[0] !== undefined ? _args[0] : "1.0.0";
            _context.next = 3;
            return (0, _util.default)(_fs.default.readFile)("package.json", "utf8");

          case 3:
            content = _context.sent;
            json = JSON.parse(content);
            json.version = nextVersion;
            _context.next = 8;
            return (0, _util.default)(_fs.default.writeFile)("package.json", (0, _stringify.default)(json, null, 4), "utf8");

          case 8:
            return _context.abrupt("return", function () {
              return console.log("Successfully bumped version to: ".concat(nextVersion));
            });

          case 9:
          case "end":
            return _context.stop();
        }
      }
    }, _callee, this);
  }));

  return function demoBumpVersion() {
    return _ref.apply(this, arguments);
  };
}();
exports.demoBumpVersion = demoBumpVersion;

Installation

npm i --save-dev babel-multi-env
# or
yarn add --dev babel-multi-env

Note on the `peerDependencies`

There are currently five peerDependencies listed under the package.json for babel-multi-env. Be sure not to screw up their versions sicne babel@^7 are currently in beta and can be found under the next dist-tags on npm.

`dependencies`

Your should add these to your dependencies:

"babel-runtime": "^7.0.0-beta.3"
"semver": "^5.4.1"

since they'll be used in the runtime.

`devDependencies`

And, these three for the code generation only:

"babel-core": "^7.0.0-beta.3",
"babel-plugin-transform-runtime": "^7.0.0-beta.3",
"babel-preset-env": "^7.0.0-beta.3",

Options

[babel-multi-env]
  --multi-versions  list of supported semver versions. Example: 8.0.0 6.0.0
                    4.0.0                                     [array] [required]
  --given           source glob patterns                      [array] [required]
  --out-dir         compile into an output directory         [string] [required]

[babel-preset-env]
  --use-built-ins  apply babel-preset-env for polyfills with "useBuiltIns":
                   "usage" (via babel-polyfill)      [string] [choices: "usage"]

[babel-plugin-transform-runtime]
  --helpers      Enables inlined Babel helpers (classCallCheck, extends, etc.)
                 are replaced with calls to moduleName [boolean] [default: true]
  --polyfill     Enables new built-ins (Promise, Set, Map, etc.) are transformed
                 to use a non-global polluting polyfill[boolean] [default: true]
  --regenerator  Enables generator functions are transformed to use a
                 regenerator runtime that does not pollute the global scope
                                                       [boolean] [default: true]
  --module-name  sets the name/path of the module used when importing helpers
                                               [string] [default: babel-runtime]

[babel-core]
  --presets  list of preset names                                        [array]
  --plugins  list of plugins names                                       [array]

Options:
  --help, -h     Show help                                             [boolean]
  --version, -v  Show version number                                   [boolean]

Name		Name	Last commit message	Last commit date
Latest commit History 52 Commits
bin		bin
example		example
lib		lib
src		src
.codeclimate.yml		.codeclimate.yml
.editorconfig		.editorconfig
.gitignore		.gitignore
.travis.yml		.travis.yml
CHANGELOG.md		CHANGELOG.md
README.md		README.md
package.json		package.json
yarn.lock		yarn.lock

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babel-multi-env

Usage

example/src/index.js

example/lib/index.js

example/lib/index8.0.0.js

example/lib/index6.0.0.js

Installation

Note on the `peerDependencies`

`dependencies`

`devDependencies`

Options

Examples

About

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Contributors 2

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tomchentw/babel-multi-env

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babel-multi-env

Usage

example/src/index.js

example/lib/index.js

example/lib/index__8.0.0__.js

example/lib/index__6.0.0__.js

Installation

Note on the peerDependencies

dependencies

devDependencies

Options

Examples

About

Topics

Resources

Stars

Watchers

Forks

Releases

Packages 0

Contributors 2

Languages

example/lib/index8.0.0.js

example/lib/index6.0.0.js

Note on the `peerDependencies`

`dependencies`

`devDependencies`

Packages