ember-native-class-codemod

A codemod for transforming your ember app code to native JavaScript class syntax with decorators!

Usage

First, install the dependencies that the codemod relies on. These are addons that the codemod will add imports from:

ember install ember-classic-decorator
ember install ember-decorators

Then, boot up your application. Then, the codemod can be run using the following command:

npx ember-native-class-codemod https://localhost:4200/path/to/server [OPTIONS] path/of/files/ or/some**/*glob.js

Options

The codemod accepts the following options, passed as CLI arguments, set in a .codemods.{json,js,cjs,yml} file, or set in a "codemods" object in package.json.

Gathering Runtime Data

The first argument that you must pass to the codemod is the URL of a running instance of your application. The codemod opens up your application and analyzes the classes directly, so it can transform them, which is why it needs this URL. Any classes that were not analyzed will not be transformed. This includes classes that are private to a module and never exported.

If you have any lazily loaded modules, such as modules from Ember Engines, you'll need to make sure that the URL you provide loads these modules as well. Otherwise, the codemod will not be able to detect them or analyze them.

To disable this feature, run with NO_TELEMETRY=true and omit the path to your local server:

NO_TELEMETRY=true npx ember-native-class-codemod [OPTIONS] path/of/files/ or/some**/*glob.js

DANGER: Disabling the telemetry may result in incorrect behavior. Carefully vet the results.

Types

The type option can be used to further narrow down transforms to a particular type of ember object within the application or addon. The types can be any of the following:

The path of the file being transformed is matched against the glob pattern of the type to determine whether to run the specific transforms.

If a type is not provided, the codemods will run against all the types in the path provided.

Debugging

The codemods log execution information in the codemods.log file in the current directory where the codemods are being executed. Specifically, details such as failures and reasons for failures, are logged. This would be the recommended starting point for debugging issues related to these codemods.

Unsupported Types

While the codemods transforms many types of ember objects, it does not support transformation of

• ember-data classes such as DS.Model, DS.Adapter etc
• Ember Objects with objects or arrays as direct properties (actions and queryParams are the exception). See eslint-plugin-ember/avoid-leaking-state-in-ember-objects for more details.
• Ember objects with computed properties that use the meta or property modifiers.

More Transform Examples

• ember-object
• helpers

Contributing

Installation

• clone the repo
• change into the repo directory
• pnpm

Running Tests

• pnpm test

Update Documentation

• pnpm update-docs