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Contributing

Contributions are always welcome, no matter how large or small!

We want this community to be friendly and respectful to each other. Please follow it in all your interactions with the project. Before contributing, please read the code of conduct.

Development workflow

This project contains the following packages:

  • The library package in the ./src directory.
  • An example app in the example/ directory.

To get started with the project, run yarn in the root directory to install the required dependencies for each package:

yarn

The example app demonstrates usage of the library. You need to run it to test any changes you make.

It is configured to use the local version of the library, so any changes you make to the library's source code will be reflected in the example app. Changes to the library's JavaScript code will be reflected in the example app without a rebuild, but native code changes will require a rebuild of the example app.

You can use various commands from the root directory to work with the project.

To start the packager:

yarn build

To run the example app on Android:

yarn android

To run the example app on iOS:

yarn ios

To confirm that the app is running with the new architecture, you can check the Metro logs for a message like this:

Running "MobileUiKitExample" with {"fabric":true,"initialProps":{"concurrentRoot":true},"rootTag":1}

Note the "fabric":true and "concurrentRoot":true properties.

Make sure your code passes TypeScript and ESLint. Run the following to verify:

yarn typecheck
yarn lint

To fix formatting errors, run the following:

yarn lint --fix

Remember to add tests for your change if possible. Run the unit tests by:

yarn test

Commit message convention

We follow the conventional commits specification for our commit messages:

  • fix: bug fixes, e.g. fix crash due to deprecated method.
  • feat: new features, e.g. add new method to the module.
  • refactor: code refactor, e.g. migrate from class components to hooks.
  • docs: changes into documentation, e.g. add usage example for the module..
  • test: adding or updating tests, e.g. add integration tests using detox.
  • chore: tooling changes, e.g. change CI config.

Our pre-commit hooks verify that your commit message matches this format when committing.

Linting and tests

ESLint, Prettier, TypeScript

We use TypeScript for type checking, ESLint with Prettier for linting and formatting the code, and Jest for testing.

Our pre-commit hooks verify that the linter and tests pass when committing.

Publishing to npm

To publish new versions, run the following:

yarn release

Scripts

The package.json file contains various scripts for common tasks:

  • yarn: setup project by installing dependencies.
  • yarn build: build project and watch for changes.
  • yarn typecheck: type-check files with TypeScript.
  • yarn lint: lint files with ESLint.
  • yarn test: run unit tests with Jest.
  • yarn android: run the example app on Android.
  • yarn ios: run the example app on iOS.

Sending a pull request

Working on your first pull request? You can learn how from this free series: How to Contribute to an Open Source Project on GitHub.

When you're sending a pull request:

  • Prefer small pull requests focused on one change.
  • Verify that linters and tests are passing.
  • Review the documentation to make sure it looks good.
  • Follow the pull request template when opening a pull request.
  • For pull requests that change the API or implementation, discuss with maintainers first by opening an issue.