Improve console output

README.md

@@ -1,6 +1,6 @@
 ![Lyo](https://i.imgur.com/nt5bYNJ.png)
 
-> Node.js to browser. The easy way
+> Node.js to browser - The easy way
 
 [![Npm version](https://runkit.io/bokub/npm-version/branches/master/lyo)](https://npmjs.com/package/lyo)
 [![Build status](https://badgen.net/travis/bokub/lyo)](https://travis-ci.org/bokub/lyo)
@@ -34,9 +34,9 @@ $ lyo --help
       $ lyo usage [options]  Show how to use the output file 
 
     Options
-      --input    -i  Entry file
-      --output   -o  Output file / folder
-      --name     -n  Module name in browser
+      --input   -i  Entry file
+      --output  -o  Output file / folder
+      --name    -n  Module name in browser
 
     Examples
       $ lyo

bin/cli.js

@@ -12,9 +12,9 @@ const cli = meow(`
       $ lyo usage [options]  Show how to use the output file 
  
     Options
-      --input    -i  Entry file
-      --output   -o  Output file / folder
-      --name     -n  Module name in browser
+      --input   -i  Entry file
+      --output  -o  Output file / folder
+      --name    -n  Module name in browser
 
     Examples
       $ lyo

lib/init.js

@@ -4,36 +4,65 @@
 const fs = require('fs');
 const editJsonFile = require('edit-json-file');
 const detectIndent = require('detect-indent');
+const ora = require('ora');
 
 function init(flags) {
 	const pkg = fs.readFileSync('package.json', 'utf8');
 	const indent = detectIndent(pkg).indent || '  ';
 	const file = editJsonFile('package.json', {stringify_width: indent});	// eslint-disable-line camelcase
+	const done = {script: false, dependency: false, config: false};
 
 	if (Object.keys(file.get('')).length === 0) {
-		throw new Error('error reading package.json');
+		ora().fail('Error reading package.json');
+		process.exit(1);
 	}
 
 	// Set prePublish script
 	const prePub = file.get('scripts.prepublishOnly');
 	if (!prePub) {
 		file.set('scripts.prepublishOnly', 'lyo');
+		done.script = 'Created';
 	} else if (prePub.indexOf('lyo') === -1) {
 		file.set('scripts.prepublishOnly', `lyo && ${prePub}`);
+		done.script = 'Edited';
 	}
 
 	// Set dependencies
 	if (!file.get('devDependencies.lyo') && !file.get('dependencies.lyo')) {
 		file.set('devDependencies.lyo', 'latest');
+		done.dependency = true;
 	}
 
 	// Set config
+	const previousConf = JSON.stringify(file.get('lyo'));
 	file.unset('lyo');
 	for (const f in flags) {
 		if (f.length > 1 && flags[f]) {
 			file.set(`lyo.${f}`, flags[f]);
 		}
 	}
+	if (JSON.stringify(file.get('lyo')) !== previousConf) {
+		done.config = true;
+	}
+
+	const successMessages = {
+		dependency: 'Added lyo to the dev dependencies',
+		script: done.script + ' "prepublishOnly" script',
+		config: 'Edited default lyo config'
+	};
+
+	let hasDifferences = false;
+	for (const key in successMessages) {
+		if (done[key]) {
+			hasDifferences = true;
+			ora().succeed(successMessages[key]);
+		}
+	}
+
+	if (!hasDifferences) {
+		ora().warn('Lyo is already configured, nothing has changed');
+		return;
+	}
 
 	file.save();
 }

lib/task.js

@@ -1,53 +1,61 @@
 #! /usr/bin/env node
 'use strict';
 
+const chalk = require('chalk');
 const getStream = require('get-stream');
 const ora = require('ora');
+const prettyMs = require('pretty-ms');
 
 const browserify = require('browserify');
 const babel = require('@babel/core');
 const babelEnvPreset = require('@babel/preset-env');
 const uglifyJS = require('uglify-js');
 
-const runBrowserify = opts => new Promise((resolve, reject) => {
-	const spinner = ora('Browserify').start();
+const durationSince = startTime => chalk.blue(prettyMs(new Date().getTime() - startTime));
+
+const runTask = (name, task) => new Promise((resolve, reject) => {
+	const startTime = new Date().getTime();
+	const spinner = ora(name).start();
+	const succeed = result => {
+		spinner.succeed(`${name} ${durationSince(startTime)}`);
+		resolve(result);
+	};
+	const fail = err => {
+		spinner.fail();
+		reject(err);
+	};
+	task(succeed, fail);
+});
+
+const runBrowserify = opts => runTask('Browserify', (resolve, reject) => {
 	const bundle = browserify([opts.input], {
 		standalone: opts.name
 	}).bundle();
 
 	getStream(bundle).then(result => {
-		spinner.succeed();
 		resolve(result);
 	}).catch(err => {
-		spinner.fail();
 		reject(err.message);
 	});
 });
 
-const runBabel = (code, opts) => new Promise((resolve, reject) => {
-	const spinner = ora('Babel').start();
+const runBabel = (code, opts) => runTask('Babel', (resolve, reject) => {
 	const configItem = babel.createConfigItem(babelEnvPreset);
 	opts = {presets: [configItem]};
 
 	babel.transformAsync(code, opts).then(result => {
-		spinner.succeed();
 		resolve(result.code);
 	}).catch(err => {
-		spinner.fail();
 		reject(err);
 	});
 });
 
-const runUglify = code => new Promise((resolve, reject) => {
-	const spinner = ora('Uglify').start();
+const runUglify = code => runTask('Uglify', (resolve, reject) => {
 	const result = uglifyJS.minify(code, {});
 	if (result.error) {
-		spinner.fail();
 		reject(result.error);
 		return;
 	}
-
-	spinner.succeed();
 	resolve(result.code);
 });
 

package.json

@@ -1,7 +1,7 @@
 {
   "name": "lyo",
-  "description": "Node.js to browser. The easy way",
-  "version": "0.4.1",
+  "description": "Node.js to browser - The easy way",
+  "version": "0.4.2",
   "author": "Boris K",
   "bin": {
     "lyo": "bin/cli.js"
@@ -20,6 +20,7 @@
     "meow": "^5.0.0",
     "mkdirp": "^0.5.1",
     "ora": "^3.0.0",
+    "pretty-ms": "^3.2.0",
     "uglify-js": "^3.4.8"
   },
   "devDependencies": {