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ESLint for Ember CLI apps and addons


ESLint 4 (for Node 4 and above):

ember install ember-cli-eslint@4

ESLint 3 (for Node 4 and above):

ember install ember-cli-eslint@3

ESLint 2 (for Node 0.10 and above):

ember install ember-cli-eslint@2

After installation, an .eslintrc.js file will be placed in both the root of your project and the /tests directory.

Furthermore, a .eslintignore file can be used to exclude files from linting while the linter is running. Its syntax is identical to .gitignore files.

Disabling JSHint

Congratulations! You've made the leap into the next generation of JavaScript linting. At the moment, however, ember-cli defaults to generating applications and addons with a jshint configuration.

If you notice the two awkwardly running side by side, click here!

ember-cli >= 2.5.0

As of ember-cli v.2.5.0, jshint is provided through its own ember-cli-jshint addon. Running npm uninstall --save-dev ember-cli-jshint, in addition to removing any .jshintrc files from your project should guarantee that its behavior is disabled.

ember-cli < 2.5.0

Controlling linting is a bit trickier on versions of ember-cli prior to 2.5.0. Within your ember-cli-build.js file, ember-cli-qunit or ember-cli-mocha can be configured to have their default linting process disabled during:

module.exports = function(defaults) {
  const app = new EmberApp(defaults, {
    'ember-cli-qunit': {
      useLintTree: false


module.exports = function(defaults) {
  const app = new EmberApp(defaults, {
    'ember-cli-mocha': {
      useLintTree: false

Alongside this setting, the hinting property can then be used to enable/disable globally:

const isTesting = process.env.EMBER_ENV === 'test';
module.exports = function(defaults) {
  const app = new EmberApp(defaults, {
    hinting: !isTesting,


ESLint will be run by ember-cli-qunit or ember-cli-mocha automatically when you run ember test. If ESLint is not being run automatically, try updating your ember-cli and/or ember-cli-qunit/ember-cli-mocha dependencies.


ember-cli-eslint can be configured through the eslint key in your ember-cli-build.js file:

let app = new EmberApp(defaults, {
  eslint: {
    testGenerator: 'qunit',
    group: true,
    rulesDir: 'eslint-rules',
    extensions: ['js'],
  • testGenerator is automatically detected if ember-cli-qunit or ember-cli-mocha are used, but can also be set to qunit and mocha manually.

  • group can be set to false to go back to the previous behavior where every generated test was contained in its own separate module.

  • rulesDir is the name of the directory for your custom eslint rules. It defaults to eslint-rules.

  • extensions is an array containing the file extensions to lint. If you want to lint JavaScript and TypeScript files for example it should be set to ['js', 'ts']. NOTE: If you add Typescript files typescript-eslint-parser has to be installed and specified as the parser. For more information take a look at the typescript-eslint-parser

On Build Files

Please note that if you are using this to lint files which are part of the build process (ie. index.js, ember-cli-build.js, config/), whether in an application or as part of an addon, they will not be linted. It is recommended that eslint is setup separately to lint these files and can be setup as an npm script and run as part of a CI process.



  • git clone this repository
  • npm install
  • bower install


Running Tests

  • npm test (Runs ember try:testall to test your addon against multiple Ember versions)
  • ember test
  • ember test --server


  • ember build

For more information on using ember-cli, visit


This project is licensed under the MIT License.