Thanks for that you are interested in contributing to Modern.js. Before starting your contribution, please take a moment to read the following guidelines.
We recommend using Node.js 18. You can check your currently used Node.js version with the following command:
Here is an example of how to install the Node.js 18 LTS version via nvm:
# Install the LTS version of Node.js 18 nvm install 18 --lts # Make the newly installed Node.js 18 as the default version nvm alias default 18 # Switch to the newly installed Node.js 18 nvm use 18
# Enable pnpm with corepack, only available on Node.js >= `v14.19.0` corepack enable
What this will do:
preparescript to build all packages (this will take some time, but is necessary to make ensure all packages are built)
A full rebuild of all packages is generally not required after this. If a new feature you are developing requires an updated version of another package, it is usually sufficient to build the changed dependencies.
Please make sure you have your email set up in
<https://github.com/settings/emails>. This will be needed later when you want to submit a pull request.
Check that your git client is already configured the email:
git config --list | grep email
Set the email to global config:
git config --global user.email "SOME_EMAIL@example.com"
Set the email for local repo:
git config user.email "SOME_EMAIL@example.com"
Once you have set up the local development environment in your forked repo, we can start development.
It is recommended to develop on a new branch, as it will make things easier later when you submit a pull request:
git checkout -b MY_BRANCH_NAME
To build the package you want to change, first open the package directory, then run the
# Replace some-path with the path of the package you want to work on cd ./packages/some-path pnpm run build
Alternatively, you can build the package from the root directory of the repository using the
pnpm run --filter @modern-js/some-package build
Build all packages:
pnpm run prepare
If you need to clean all
node_modules/* in the project, run the
pnpm run reset
If you've fixed a bug or added code that should be tested, then add some tests.
Before submitting a pull request, it's important to make sure that the changes haven't introduced any regressions or bugs. You can run the unit tests for the project by executing the following command:
pnpm run test
Alternatively, you can run the unit tests of single package using the
pnpm run --filter @modern-js/some-package test
In addition to the unit tests, the Modern.js also includes end-to-end (E2E) tests, which checks the functionality of the application as a whole.
You can run the
test:e2e command to run the E2E tests:
pnpm run test:e2e
If you need to run a specified test, you can add keywords to filter:
# Only run test cases with the copy-assets keyword npx jest copy-assets
To help maintain consistency and readability of the codebase, we use a ESLint to lint the codes.
You can run the Linter by executing the following command:
pnpm run lint
You can input
!bench-module in the comment area of the PR to do benchmarking on
@modern-js/module-tools respectively (you need to have Collaborator and above permissions).
You can focus on metrics related to build time and bundle size based on the comparison table output by comments to assist you in making relevant performance judgments and decisions.
Dependencies installation-related metrics base on publishing process, so the data is relatively lagging and is for reference only.
Currently Modern.js provides documentation in English and Chinese. If you can use Chinese, please update both documents at the same time. Otherwise, just update the English documentation.
You can find all the documentation in the
root └─ packages └─ document ├─ builder-doc # Documentation for Modern.js Builder ├─ main-doc # Documentation for Modern.js Framework └─ module-doc # Documentation for Modern.js Module
This website is built with Rspress, the document content can be written using markdown or mdx syntax. You can refer to the Rspress Website for detailed usage.
The source code of Rspress can be found in this repo.
Modern.js is using Changesets to manage the versioning and changelogs.
If you've changed some packages, you need add a new changeset for the changes. Please run
change command to select the changed packages and add the changeset info.
pnpm run change
Commit your changes to your forked repo, and create a pull request.
The format of PR titles follow Conventional Commits.
feat(plugin-swc): Add `xxx` config ^ ^ ^ | | |__ Subject | |_______ Scope |____________ Type
We use Modern.js Monorepo Solution to manage version and changelog.
Repository maintainers can publish a new version of all packages to npm.
Here are the steps to publish (we generally use CI for releases and avoid publishing npm packages locally):
pnpm run prepare
pnpm run bump
git add . git commit -m "Release va.b.c"