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    Ember CLI Dotenv


    ember install ember-cli-dotenv

    Upgrading to 2.0.0

    • ember install ember-cli-dotenv@^2.0.0
    • open config/dotenv.js and ember-cli-build.js
    • Move/convert the dotEnv application options from ember-cli-build.js to the function declared within config/dotenv.js

    What is Ember CLI Dotenv?

    This addon allows you to write environment variables in a .env file and expose them to your Ember app through the built-in config/environment.js that you can import in your app. For example, you might be building an app with Dropbox and don’t want to check your key into the repo. Put a .env file in the root of your repository:


    Next, configure config/dotenv.js.

    // config/dotenv.js
    module.exports = function(env) {
      return {
        clientAllowedKeys: ['DROPBOX_KEY'],
        // Fail build when there is missing any of clientAllowedKeys environment variables.
        // By default false.
        failOnMissingKey: false

    All keys in .env are currently injected into node’s process.env. These will be available in your config/environment.js file:

    // config/environment.js
    module.exports = function(environment) {
      return {
        MY_OTHER_KEY: process.env.MY_OTHER_KEY

    You can then use the node process environment variables in other ember-cli-addons, such as express middleware or other servers/tasks.

    Security: environment variables in config/environment.js are never filtered unlike using .env and clientAllowedKeys. Remember to use the environment variable passed into your config function to filter out secrets for production usage. Never include sensitive variables in clientAllowedKeys, as these will be exposed publicly via Ember's <meta name="app/config/environment"> tag.

    Then, you can access the environment variables anywhere in your app like you usually would.

    import ENV from "my-app/config/environment";
    console.log(ENV.DROPBOX_KEY); // logs YOURKEYGOESHERE

    You can read more about dotenv files on their dotenv repository.

    All the work is done by ember-cli and dotenv. Thanks ember-cli team and dotenv authors and maintainers! Thanks Brandon Keepers for the original dotenv ruby implementation.

    FastBoot support

    This addon supports FastBoot via fastbootConfigTree build hook (requires ember-cli-fastboot 1.1.0 or higher). Use fastbootAllowedKeys configuration option to make variables available in FastBoot mode when Ember application is rendered server-side.

    // ember-cli-build.js
    module.exports = function(defaults) {
      let app = new EmberApp(defaults, {
        dotEnv: {
          clientAllowedKeys: ['DROPBOX_KEY'],
          fastbootAllowedKeys: ['MY_API_SECRET', 'MY_OTHER_API_SECRET']
      return app.toTree();

    Note: keys listed in fastbootAllowedKeys are not added to Ember's <meta name="app/config/environment"> tag and are not available to Ember application when it runs in browser.

    Multiple Environments

    Sometimes people may want to use different .env file than the one in project root. This can be configured as below:

    // config/dotenv.js
    module.exports = function(env) {
      return {
        clientAllowedKeys: ['DROPBOX_KEY'],
        path: './path/to/.env'

    In addition, you may also customize for different environments:

    // config/dotenv.js
    module.exports = function(env) {
      return {
        clientAllowedKeys: ['DROPBOX_KEY'],
        path: `./path/to/.env-${env}`

    With the above, if you run ember build --environment production, the file ./path/to/.env-production will be used instead.

    Environment Specific Use

    Sometimes people may want to only initiate the dotenv file in one or more environments (e.g. not in production) This can be configured as below:

    // config/dotenv.js
    module.exports = function(env) {
      return {
        enabled: env !== 'production' // default is TRUE for any environment

    When enabled is set to false, the dotenv protocol will not be used at all. This is great for quieting errors and side issues when deploying with a service like Heroku, where you can use environment variables set within the service and avoid storing a .env file in your repo.


    This addon supports the Ember 2.x series, but it is also backwards-compatible down to Ember-CLI 0.1.2 and Ember 1.7.0.

    For FastBoot support you need Ember 2.3 or higher (2.12.0 and higher is prefereable by ember-cli-fastboot) and ember-cli-fastboot 1.1.1 or higher.

    Other Resources



    • git clone
    • cd ember-cli-dotenv
    • npm install


    • npm run lint:js
    • npm run lint:js -- --fix

    Running tests

    • ember test – Runs the test suite on the current Ember version
    • ember test --server – Runs the test suite in "watch mode"
    • npm test:ember – Runs the test suite against multiple Ember versions
    • npm test:node - Runs the test suite in test folder created with ember-cli-addon-tests

    Running the dummy application

    For more information on using ember-cli, visit



    This project is licensed under the MIT License.


    npm i ember-cli-dotenv

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