Drop node < 4 support, don't transpile code

Closes #24

Author: shvaikalesh

.babelrc

@@ -1,3 +1,2 @@
 node_modules/**
-dist/**
 test/*/**/*.js

.eslintignore

@@ -5,5 +5,11 @@
 
     "env": {
         "node": true
+    },
+
+    "rules": {
+    	"prefer-reflect": 0,
+    	"prefer-rest-params": 0,
+    	"prefer-spread": 0
     }
 }

.eslintrc.json

@@ -1,5 +1,4 @@
 /node_modules/
-/dist/
 *.log
 /test/*/*-copy
 /test/*-fixtures/generated/

.gitignore

@@ -1,7 +1,6 @@
 language: node_js
 sudo: false
 node_js:
-  - '0.12'
   - '4'
   - '6'
 env:

.travis.yml

@@ -1,84 +1,22 @@
 'use strict';
 
-// Disable options that don't work in Node.js 0.12.
-// Gruntfile.js & tasks/*.js are the only non-transpiled files.
-/* eslint-disable no-var, object-shorthand, prefer-arrow-callback, prefer-const,
- prefer-spread, prefer-reflect, prefer-rest-params, prefer-template */
-
-var assert = require('assert');
-
-var newNode;
-try {
-    assert.strictEqual(eval('(r => [...r])([2])[0]'), 2); // eslint-disable-line no-eval
-    newNode = true;
-} catch (e) {
-    newNode = false;
-}
-
-var tooOldNodeForTheTask = /^v0\./.test(process.version);
-
-// Support: Node.js <4
-// Skip running tasks that dropped support for Node.js 0.10 & 0.12
-// in those Node versions.
-var runIfNewNode = function (task) {
-    return tooOldNodeForTheTask ? 'print_old_node_message:' + task : task;
-};
-
 module.exports = function (grunt) {
     require('time-grunt')(grunt);
 
     grunt.initConfig({
         clean: {
             all: {
                 src: [
-                    'dist',
                     '*.log',
                     'test/*/*-copy',
                     'test/*-fixtures/generated',
                 ],
             },
         },
 
-        copy: {
-            all: {
-                files: [
-                    {
-                        expand: true,
-                        dot: true,
-                        src: [
-                            'test/**/*',
-                            '!test/**/*.js',
-                        ],
-                        dest: 'dist',
-                    },
-                ],
-            },
-        },
-
-        babel: {
-            options: {
-                sourceMap: true,
-                retainLines: true,
-            },
-            all: {
-                files: [
-                    {
-                        expand: true,
-                        src: [
-                            'bin/**/*.js',
-                            'lib/**/*.js',
-                            'test/**/*.js',
-                        ],
-                        dest: 'dist',
-                    },
-                ],
-            },
-        },
-
         eslint: {
             all: {
                 src: [
-                    '*.js',
                     'bin',
                     'lib',
                     'test',
@@ -91,41 +29,20 @@ module.exports = function (grunt) {
                 options: {
                     reporter: 'spec',
                 },
-                src: [newNode ? 'test/spec.js' : 'dist/test/spec.js'],
+                src: 'test/spec.js',
             },
         },
     });
 
     // Load grunt tasks from NPM packages
-    // Support: Node.js <4
-    // Don't load the eslint task in old Node.js, it won't parse.
-    require('load-grunt-tasks')(grunt, {
-        pattern: tooOldNodeForTheTask ? ['grunt-*', '!grunt-eslint'] : ['grunt-*'],
-    });
-
-    // Supports: Node.js <4
-    grunt.registerTask('print_old_node_message', function () {
-        var task = [].slice.call(arguments).join(':');
-        grunt.log.writeln('Old Node.js detected, running the task "' + task + '" skipped...');
-    });
-
-    grunt.registerTask('lint', [
-        runIfNewNode('eslint'),
-    ]);
-
-    // In modern Node.js we just use the non-transpiled source as it makes it easier to debug;
-    // in older version we transpile (but keep the lines).
-    grunt.registerTask('build', [
-        'copy',
-        'babel',
-    ]);
+    require('load-grunt-tasks')(grunt);
 
+    grunt.registerTask('lint', ['eslint']);
     grunt.registerTask('test', ['mochaTest']);
 
     grunt.registerTask('default', [
         'clean',
         'lint',
-        'build',
         'test',
     ]);
 };

Gruntfile.js

@@ -9,7 +9,7 @@ init:
 # Test against these versions of Node.js.
 environment:
   matrix:
-    - nodejs_version: "0.12"
+    - nodejs_version: "4"
     - nodejs_version: "6"
 
 # Install scripts. (runs after repo cloning)
@@ -37,7 +37,7 @@ build: off
 matrix:
 #  fast_finish: true
   allow_failures:
-    - nodejs_version: "6"
+    - nodejs_version: "4"
 
 # Set up cache, clear it on package.json changes.
 # NOTE: Cache disabled for now.

appveyor.yml

@@ -3,16 +3,16 @@
 'use strict';
 
 const minimist = require('minimist');
-const _ = require('lodash');
+const camelCase = require('lodash.camelcase');
 const checkDependencies = require('../lib/check-dependencies');
 
 const argv = minimist(process.argv.slice(2));
 
 // camelCase the options
-for (const key in argv) {
+for (const key of Object.keys(argv)) {
     const value = argv[key];
     delete argv[key];
-    argv[_.camelCase(key)] = value;
+    argv[camelCase(key)] = value;
 }
 
 // Options of type array should always have array values