Replace JSHint with ESLint (#33)

* Replace JSHint with ESLint

* ESLint: Enable more rules

.eslintrc.js

@@ -0,0 +1,42 @@
+module.exports = {
+  root: true,
+  env: {
+    node: true
+  },
+  extends: 'eslint:recommended',
+  rules: {
+    // --- Possible Errors ---
+
+    'no-template-curly-in-string': 'error',
+    'no-unsafe-negation': 'error',
+
+    // --- Best Practices ---
+
+    'curly': 'error',
+    'eqeqeq': 'error',
+    'no-eval': 'error',
+    'no-extra-bind': 'error',
+    'no-implicit-coercion': 'error',
+    'no-implied-eval': 'error',
+    'no-multi-spaces': 'error',
+    'no-new-func': 'error',
+    'no-new-wrappers': 'error',
+    'no-new': 'error',
+    'no-return-assign': 'error',
+    'no-return-await': 'error',
+    'no-sequences': 'error',
+    'no-throw-literal': 'error',
+    'no-unused-expressions': 'error',
+    'no-useless-call': 'error',
+    'no-useless-concat': 'error',
+    'no-useless-escape': 'error',
+    'no-void': 'error',
+    'no-with': 'error',
+    'require-await': 'error',
+    'yoda': 'error',
+
+    // --- Variables ---
+
+    'no-use-before-define': ['error', 'nofunc']
+  }
+};

package.json

@@ -8,7 +8,7 @@
   },
   "scripts": {
     "build": "ember build",
-    "lint": "jshint config test-support tests *.js",
+    "lint": "eslint config test-support tests *.js",
     "start": "ember server",
     "test": "ember try:each"
   },
@@ -37,7 +37,7 @@
     "ember-export-application-global": "^1.0.5",
     "ember-load-initializers": "^0.5.1",
     "ember-resolver": "^2.0.3",
-    "jshint": "^2.9.4",
+    "eslint": "^3.12.2",
     "loader.js": "^4.0.10"
   },
   "keywords": [

test-support/.eslintrc.js

@@ -0,0 +1,11 @@
+module.exports = {
+  parserOptions: {
+    ecmaVersion: 6,
+    sourceType: 'module'
+  },
+  env: {
+    node: null,
+    browser: true,
+    embertest: true,
+  },
+};

tests/.eslintrc.js

@@ -0,0 +1,11 @@
+module.exports = {
+  parserOptions: {
+    ecmaVersion: 6,
+    sourceType: 'module'
+  },
+  env: {
+    node: null,
+    browser: true,
+    embertest: true,
+  },
+};

tests/dummy/config/environment.js

@@ -1,4 +1,4 @@
-/* jshint node: true */
+/* eslint-env node */
 
 module.exports = function(environment) {
   var ENV = {
@@ -43,7 +43,7 @@ module.exports = function(environment) {
   }
 
   if (environment === 'production') {
-
+    // nothing yet...
   }
 
   return ENV;