ember-template-lint is a library that will lint your handlebars template and return error results.

For example, if the rule no-bare-strings is enabled, this template would be in violation:

{{! app/components/my-thing/template.hbs  }}
<div>A bare string</div>

When the ember-template-lint executable is run, we would have a single result indicating that the no-bare-strings rule found an error.

• Node.js ^18.18.0 || ^20.9.0 || >=21.1.0

npm install --save-dev ember-template-lint

yarn add --dev ember-template-lint

Note: this library is installed by default with new Ember apps.

While ember-template-lint does have a Node API, the main way to use it is through its executable, which is intended to be installed locally within a project.

Basic usage is as straightforward as

ember-template-lint .

See documentation on workflow examples.

See documentation on the todo functionality.

You can turn on specific rules by toggling them in a .template-lintrc.js file at the base of your project, or at a custom relative path which may be identified using the CLI:

module.exports = {
  extends: 'recommended',

  rules: {
    'no-bare-strings': true,
  },
};

For more detailed information see configuration.

Each rule has emojis denoting:

• what configuration it belongs to
• 🔧 if some problems reported by the rule are automatically fixable by the --fix command line option

You can add a fixer to a rule. See fixer documentation for more details.

It is possible to share a config (extends) or plugin (custom rules) across projects. See ember-template-lint-plugin-peopleconnect for an example.

You can define and use your own custom rules using the plugin system. See plugin documentation for more details.

The semver policy for this addon can be read here: semver policy.

See the Contributing Guidelines for information on how to help out.

This project is licensed under the MIT License.