refactor(es2015+): refactoring in es2015+ syntax

.eslintrc

@@ -7,7 +7,9 @@
   "extends": ["eslint:recommended", "prettier"],
   "rules": {
     "prettier/prettier": "error",
-    "no-console": 0
+    "no-console": 0,
+    "no-var": "error",
+    "strict": [2, "never"]
   },
   "parserOptions": {
     "sourceType": "module"

.gitignore

@@ -5,3 +5,5 @@
 node_modules
 coverage
 .history
+dist
+lib

.npmignore

@@ -1,23 +1,2 @@
-.DS_Store
-.idea
-.vscode
-._*
-.history
-node_modules
-coverage
-examples
-__tests__
-.circleci
-.editorconfig
-.eslintrc
-.gitignore
-.npmignore
-.npmrc
-.prettierignore
-.travis.yml
-.yarnrc
-appveyor.yml
-codecov.yml
-static/cli.png
-static/node-minify.svg
-yarn.lock
+*
+!lib/*

__tests__/cli-test.js

@@ -1,65 +1,63 @@
-'use strict';
+/*!
+ * node-minify
+ * Copyright(c) 2011-2018 Rodolphe Stoclin
+ * MIT Licensed
+ */
 
 jasmine.DEFAULT_TIMEOUT_INTERVAL = 30000;
 
-var childProcess = require('child_process');
-var nodeMinify = require('../lib/node-minify');
-var cli = require('../lib/cli');
-var utils = require('../lib/utils');
+import childProcess from 'child_process';
+import { minify } from '../src/node-minify';
+import * as cli from '../src/cli';
+import { utils } from '../src/utils';
 
-describe('cli', function() {
-  test('should minify to have been called', function() {
-    var spy = jest.spyOn(nodeMinify, 'minify');
-    cli({
+describe('cli', () => {
+  test('should minify to have been called', () => {
+    const spy = jest.spyOn(cli, 'run');
+    cli.run({
       compressor: 'gcc',
       input: 'examples/public/js/sample.js',
       output: 'examples/public/js-dist/babili-es6.js'
     });
     expect(spy).toHaveBeenCalled();
   });
-  test('should minify to have been called with all compressors', function() {
-    var spy = jest.spyOn(nodeMinify, 'minify');
-    return cli({
-      compressor: 'all',
-      input: 'examples/public/js/sample.js',
-      output: 'examples/public/js-dist/babili-es6.js'
-    }).then(function() {
-      expect(spy).toHaveBeenCalled();
-    });
+  test('should minify to have been called with all compressors', () => {
+    const spy = jest.spyOn(cli, 'run');
+    return cli
+      .run({
+        compressor: 'all',
+        input: 'examples/public/js/sample.js',
+        output: 'examples/public/js-dist/babili-es6.js'
+      })
+      .then(() => expect(spy).toHaveBeenCalled());
   });
 });
 
-describe('cli error', function() {
-  beforeEach(function() {
-    spyOn(childProcess, 'spawn').and.throwError('UnsupportedClassVersionError');
-  });
-  test('should minify to throw with all compressors', function() {
-    var spy = jest.spyOn(nodeMinify, 'minify');
-    return cli({
-      compressor: 'all',
-      input: 'examples/public/js/sample.js',
-      output: 'examples/public/js-dist/babili-es6.js'
-    }).catch(function(err) {
-      expect(spy).toHaveBeenCalled();
-      return expect(err.message).toMatch(
-        /(UnsupportedClassVersionError)|(Latest Google Closure Compiler requires Java >= 1.7, please update Java or use gcc-legacy)/
-      );
-    });
+describe('cli error', () => {
+  beforeEach(() => spyOn(childProcess, 'spawn').and.throwError('UnsupportedClassVersionError'));
+  test('should minify to throw with all compressors', () => {
+    const spy = jest.spyOn(cli, 'run');
+    return cli
+      .run({
+        compressor: 'all',
+        input: 'examples/public/js/sample.js',
+        output: 'examples/public/js-dist/babili-es6.js'
+      })
+      .catch(err => {
+        expect(spy).toHaveBeenCalled();
+        return expect(err.message).toMatch(
+          /(UnsupportedClassVersionError)|(Latest Google Closure Compiler requires Java >= 1.7, please update Java or use gcc-legacy)/
+        );
+      });
   });
 });
 
-describe('pretty bytes', function() {
-  test('should throw when not a number', function() {
-    expect(function() {
-      utils.prettyBytes('a');
-    }).toThrow();
+describe('pretty bytes', () => {
+  test('should throw when not a number', () => {
+    expect(() => utils.prettyBytes('a')).toThrow();
   });
 
-  test('should return a negative number', function() {
-    expect(utils.prettyBytes(-1)).toBe('-1 B');
-  });
+  test('should return a negative number', () => expect(utils.prettyBytes(-1)).toBe('-1 B'));
 
-  test('should return 0', function() {
-    expect(utils.prettyBytes(0)).toBe('0 B');
-  });
+  test('should return 0', () => expect(utils.prettyBytes(0)).toBe('0 B'));
 });