Upgrade dependencies and enforce node 4 support

Author: dfreeman

.eslintrc.js

@@ -4,11 +4,54 @@ module.exports = {
     ecmaVersion: 2017,
     sourceType: 'module',
   },
-  extends: 'eslint:recommended',
+  plugins: ['ember'],
+  extends: ['eslint:recommended', 'plugin:ember/recommended'],
   env: {
     browser: true,
-    node: true,
-    mocha: true,
   },
   rules: {},
+  overrides: [
+    // node files
+    {
+      files: [
+        'index.js',
+        'testem.js',
+        'ember-cli-build.js',
+        'config/**/*.js',
+        'tests/dummy/config/**/*.js',
+        'lib/**/*.js',
+        'node-tests/**/*.js',
+      ],
+      excludedFiles: ['app/**', 'addon/**', 'tests/dummy/app/**'],
+      parserOptions: {
+        sourceType: 'script',
+        ecmaVersion: 2015,
+      },
+      env: {
+        browser: false,
+        node: true,
+      },
+      plugins: ['node'],
+      rules: Object.assign({}, require('eslint-plugin-node').configs.recommended.rules, {
+        // add your custom rules and overrides for node files here
+      }),
+    },
+
+    // test files
+    {
+      files: ['tests/**/*.js'],
+      excludedFiles: ['tests/dummy/**/*.js'],
+      env: {
+        embertest: true,
+      },
+    },
+
+    // node test files
+    {
+      files: ['node-tests/**/*.js'],
+      env: {
+        mocha: true,
+      },
+    },
+  ],
 };

.travis.yml

@@ -34,6 +34,7 @@ install:
   - yarn install --no-lockfile
 
 script:
+  - yarn lint:js
   # Usually, it's ok to finish the test scenario without reverting
   #  to the addon's original dependency state, skipping "cleanup".
   - node_modules/.bin/ember try:one $EMBER_TRY_SCENARIO --skip-cleanup

blueprints/adapter/index.js

@@ -1,6 +1,6 @@
-/* eslint-env node */
+'use strict';
 
-var extendFromApplicationEntity = require('../../lib/utilities/extend-from-application-entity');
+const extendFromApplicationEntity = require('../../lib/utilities/extend-from-application-entity');
 
 module.exports = {
   description: 'Generates an ember-data adapter.',

blueprints/ember-cli-typescript/index.js

@@ -1,6 +1,5 @@
-/* eslint-env node */
+'use strict';
 
-const { existsSync } = require('fs');
 const path = require('path');
 
 module.exports = {

blueprints/model/index.js

@@ -1,8 +1,8 @@
-/* eslint-env node */
+'use strict';
 
-var inflection  = require('inflection');
-var stringUtils = require('ember-cli-string-utils');
-var EOL         = require('os').EOL;
+const inflection  = require('inflection');
+const stringUtils = require('ember-cli-string-utils');
+const EOL         = require('os').EOL;
 
 module.exports = {
   description: 'Generates an ember-data model.',

blueprints/serializer/index.js

@@ -1,6 +1,6 @@
-/* eslint-env node */
+'use strict';
 
-var extendFromApplicationEntity = require('../../lib/utilities/extend-from-application-entity');
+const extendFromApplicationEntity = require('../../lib/utilities/extend-from-application-entity');
 
 module.exports = {
   description: 'Generates an ember-data serializer.',

config/ember-try.js

@@ -1,4 +1,3 @@
-/* eslint-env node */
 module.exports = {
   useYarn: true,
   scenarios: [

config/environment.js

@@ -1,4 +1,3 @@
-/* eslint-env node */
 'use strict';
 
 module.exports = function(/* environment, appConfig */) {

ember-cli-build.js

@@ -1,4 +1,3 @@
-/* eslint-env node */
 'use strict';
 
 const EmberAddon = require('ember-cli/lib/broccoli/ember-addon');

index.js

@@ -1,5 +1,5 @@
 // @ts-check
-/* eslint-env node */
+'use strict';
 
 const IncrementalTypescriptCompiler = require('./lib/incremental-typescript-compiler');