feat: babel upgrade

Fixes #54
Fixes #62

.eslintignore

@@ -0,0 +1,19 @@
+# unconventional js
+/blueprints/*/files/
+/vendor/
+
+# compiled output
+/dist/
+/tmp/
+
+# dependencies
+/bower_components/
+
+# misc
+/coverage/
+!.*
+
+# ember-try
+/.node_modules.ember-try/
+/bower.json.ember-try
+/package.json.ember-try

.eslintrc.js

@@ -1,36 +1,29 @@
+/* eslint-env node */
 module.exports = {
   root: true,
   parserOptions: {
     ecmaVersion: 2017,
     sourceType: 'module'
   },
-  plugins: [
-    'ember'
-  ],
-  extends: [
-    'eslint:recommended',
-    'plugin:ember/recommended'
-  ],
+  plugins: ['ember'],
+  extends: ['eslint:recommended', 'plugin:ember/recommended'],
   env: {
     browser: true
   },
-  rules: {
-  },
+  rules: {},
   overrides: [
     // node files
     {
       files: [
+        '.template-lintrc.js',
+        'ember-cli-build.js',
         'index.js',
         'testem.js',
-        'ember-cli-build.js',
+        'blueprints/*/index.js',
         'config/**/*.js',
         'tests/dummy/config/**/*.js'
       ],
-      excludedFiles: [
-        'app/**',
-        'addon/**',
-        'tests/dummy/app/**'
-      ],
+      excludedFiles: ['addon/**', 'addon-test-support/**', 'app/**', 'tests/dummy/app/**'],
       parserOptions: {
         sourceType: 'script',
         ecmaVersion: 2015
@@ -43,15 +36,6 @@ module.exports = {
       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
-      }
     }
   ]
-};
+}

.gitignore

@@ -1,25 +1,23 @@
 # See https://help.github.com/ignore-files/ for more about ignoring files.
 
 # compiled output
-/dist
-/tmp
+/dist/
+/tmp/
 
 # dependencies
-/node_modules
-/bower_components
+/bower_components/
+/node_modules/
 
 # misc
 /.sass-cache
 /connect.lock
-/coverage/*
+/coverage/
 /libpeerconnection.log
-npm-debug.log*
-yarn-error.log
-testem.log
+/npm-debug.log*
+/testem.log
+/yarn-error.log
 
 # ember-try
-.node_modules.ember-try/
-bower.json.ember-try
-package.json.ember-try
-
-.DS_Store
+/.node_modules.ember-try/
+/bower.json.ember-try
+/package.json.ember-try

.npmignore

@@ -1,21 +1,29 @@
-/bower_components
+# compiled output
+/dist/
+/tmp/
+
+# dependencies
+/bower_components/
+
+# misc
+/.bowerrc
+/.editorconfig
+/.ember-cli
+/.eslintignore
+/.eslintrc.js
+/.gitignore
+/.template-lintrc.js
+/.travis.yml
+/.watchmanconfig
+/bower.json
 /config/ember-try.js
-/dist
-/tests
-/tmp
-**/.gitkeep
-.bowerrc
-.editorconfig
-.ember-cli
-.eslintrc.js
-.gitignore
-.watchmanconfig
-.travis.yml
-bower.json
-ember-cli-build.js
-testem.js
+/ember-cli-build.js
+/testem.js
+/tests/
+/yarn.lock
+.gitkeep
 
 # ember-try
-.node_modules.ember-try/
-bower.json.ember-try
-package.json.ember-try
+/.node_modules.ember-try/
+/bower.json.ember-try
+/package.json.ember-try

.template-lintrc.js

@@ -0,0 +1,5 @@
+'use strict';
+
+module.exports = {
+  extends: 'recommended'
+};

.travis.yml

@@ -1,9 +1,8 @@
----
 language: node_js
 node_js:
   # we recommend testing addons with the same minimum supported node version as Ember CLI
   # so that your addon works for all apps
-  - "9"
+  - '10'
 
 sudo: false
 dist: trusty
@@ -14,21 +13,41 @@ addons:
 cache:
   yarn: true
 
-env:
-  global:
-    # See https://git.io/vdao3 for details.
-    - JOBS=2
-  matrix:
+jobs:
+  fail_fast: true
+  allow_failures:
+    - env: EMBER_TRY_SCENARIO=ember-canary
+
+  include:
+    # runs linting and tests with current locked deps
+
+    - stage: 'Tests'
+      name: 'Tests'
+      install:
+        - yarn install --non-interactive
+      script:
+        - yarn lint:js
+        - yarn test
+
+    - name: 'Floating Dependencies'
+      script:
+        - yarn test
     # we recommend new addons test the current and previous LTS
     # as well as latest stable release (bonus points to beta/canary)
-    - EMBER_TRY_SCENARIO=ember-lts-2.16
-    - EMBER_TRY_SCENARIO=ember-2.18-d3-4.1
-    - EMBER_TRY_SCENARIO=ember-2.18-d3-4.7
-    - EMBER_TRY_SCENARIO=ember-2.18-d3-4.4.13
-    - EMBER_TRY_SCENARIO=ember-3.0-d3-5.0.0
-    - EMBER_TRY_SCENARIO=ember-3.0-d3-4.1
-    - EMBER_TRY_SCENARIO=ember-default
-
+    - stage: 'Additional Tests'
+      env: EMBER_TRY_SCENARIO=ember-lts-2.16
+    - env: EMBER_TRY_SCENARIO=ember-2.18-d3-4.1
+    - env: EMBER_TRY_SCENARIO=ember-2.18-d3-4.7
+    - env: EMBER_TRY_SCENARIO=ember-2.18-d3-4.4.13
+    - env: EMBER_TRY_SCENARIO=ember-3.0-d3-5.0.0
+    - env: EMBER_TRY_SCENARIO=ember-3.0-d3-4.1
+    - env: EMBER_TRY_SCENARIO=ember-default
+    - env: EMBER_TRY_SCENARIO=ember-release
+    - env: EMBER_TRY_SCENARIO=ember-beta
+    - stage: 'Canary Tests'
+      script:
+        - node_modules/.bin/ember try:one $EMBER_TRY_SCENARIO
+      env: EMBER_TRY_SCENARIO=ember-canary
 matrix:
   fast_finish: true
 
@@ -41,6 +60,4 @@ install:
 
 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
+  - node_modules/.bin/ember try:one $EMBER_TRY_SCENARIO