Update grunt tasks to lint and transpile es6 code using babel

Summary: - Linter uses predefined rules for ES6 and React from airbnb

Test Plan: - Manuel

Reviewers: evan, bengotow

Reviewed By: bengotow

Differential Revision: https://phab.nylas.com/D2242

.eslintrc

@@ -0,0 +1,3 @@
+{
+  "extends": "./build/config/eslint.json"
+}

build/Gruntfile.coffee

@@ -52,10 +52,12 @@ _.extend(global, require('harmony-collections')) unless global.WeakMap?
 module.exports = (grunt) ->
   grunt.loadNpmTasks('grunt-coffeelint-cjsx')
   grunt.loadNpmTasks('grunt-lesslint')
+  grunt.loadNpmTasks('grunt-babel')
   grunt.loadNpmTasks('grunt-cson')
   grunt.loadNpmTasks('grunt-contrib-csslint')
   grunt.loadNpmTasks('grunt-coffee-react')
   grunt.loadNpmTasks('grunt-contrib-coffee')
+  grunt.loadNpmTasks('grunt-eslint')
   grunt.loadNpmTasks('grunt-contrib-less')
   grunt.loadNpmTasks('grunt-shell')
   grunt.loadNpmTasks('grunt-markdown')
@@ -124,6 +126,25 @@ module.exports = (grunt) ->
       dest: appDir
       ext: '.js'
 
+  babelConfig =
+    options: require './config/babel.json'
+    dist:
+      files: [{
+        expand: true
+        src: [
+          'src/**/*.es6'
+          'src/**/*.es'
+          'src/**/*.jsx'
+          'internal_packages/**/*.es6'
+          'internal_packages/**/*.es'
+          'internal_packages/**/*.jsx'
+          'static/**/*.es6'
+          'static/**/*.es'
+        ]
+        dest: appDir
+        ext: '.js'
+      }]
+
   lessConfig =
     options:
       paths: [
@@ -189,6 +210,8 @@ module.exports = (grunt) ->
 
     coffee: coffeeConfig
 
+    babel: babelConfig
+
     cjsx: cjsxConfig
 
     less: lessConfig
@@ -235,6 +258,20 @@ module.exports = (grunt) ->
       target:
         grunt.option("target")?.split(" ") or []
 
+    eslint:
+      options:
+        configFile: 'build/config/eslint.json'
+      target: [
+        'internal_packages/**/*.jsx'
+        'internal_packages/**/*.es6'
+        'internal_packages/**/*.es'
+        'dot-nylas/**/*.es6'
+        'dot-nylas/**/*.es'
+        'src/**/*.es6'
+        'src/**/*.es'
+        'src/**/*.jsx'
+      ]
+
     csslint:
       options:
         'adjoining-classes': false
@@ -319,8 +356,8 @@ module.exports = (grunt) ->
           stderr: false
           failOnError: false
 
-  grunt.registerTask('compile', ['coffee', 'cjsx', 'prebuild-less', 'cson', 'peg'])
-  grunt.registerTask('lint', ['coffeelint', 'csslint', 'lesslint', 'nylaslint'])
+  grunt.registerTask('compile', ['coffee', 'cjsx', 'babel', 'prebuild-less', 'cson', 'peg'])
+  grunt.registerTask('lint', ['coffeelint', 'csslint', 'lesslint', 'nylaslint', 'eslint'])
   grunt.registerTask('test', ['shell:kill-atom', 'run-edgehill-specs'])
   grunt.registerTask('docs', ['build-docs', 'render-docs'])
 

build/config/babel.json

@@ -0,0 +1,3 @@
+{
+  "presets": ["es2015", "react", "stage-0"]
+}

build/config/eslint.json

@@ -0,0 +1,17 @@
+{
+  "extends": "airbnb",
+  "globals": {
+    "atom": false
+  },
+  "env": {
+    "browser": true,
+    "node": true,
+    "jasmine": true
+  },
+  "rules": {
+    "react/prop-types": [2, {"ignore": ["children"]}],
+    "eqeqeq": [2, "smart"],
+    "id-length": [0],
+    "no-loop-func": [0]
+  }
+}

build/package.json

@@ -7,13 +7,18 @@
   },
   "dependencies": {
     "async": "~0.2.9",
+    "babel-eslint": "^4.1.3",
     "bluebird": "^2.3",
     "coffee-react-transform": "^3.1.0",
     "coffeelint-cjsx": "^2.0",
     "donna": "1.0.10",
+    "eslint": "^1.5.1",
+    "eslint-config-airbnb": "^0.1.0",
+    "eslint-plugin-react": "^3.4.2",
     "fs-plus": "2.x",
     "github-releases": "~0.3.0",
     "grunt": "~0.4.1",
+    "grunt-babel": "^6.0.0",
     "grunt-cli": "~0.1.9",
     "grunt-coffee-react": "^2.1.0",
     "grunt-coffeelint": "git+https://github.com/atom/grunt-coffeelint.git#cfb99aa99811d52687969532bd5a98011ed95bfe",
@@ -24,6 +29,7 @@
     "grunt-cson": "0.14.0",
     "grunt-download-electron": "^2.1",
     "grunt-electron-installer": "^1.0",
+    "grunt-eslint": "^17.3.1",
     "grunt-lesslint": "0.13.0",
     "grunt-markdown": "^0.7.0",
     "grunt-peg": "~1.1.0",

package.json

@@ -77,6 +77,10 @@
     "vm-compatibility-layer": "0.1.0"
   },
   "devDependencies": {
+    "babel-eslint": "^4.1.3",
+    "eslint": "^1.5.1",
+    "eslint-config-airbnb": "^0.1.0",
+    "eslint-plugin-react": "^3.4.2",
     "nock": "^2",
     "grunt": "^0.4.5",
     "grunt-serve": "^0.1.6",