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astro/CONTRIBUTING.md
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Contributor Manual

We welcome contributions of any size and skill level. As an open source project, we believe in giving back to our contributors and are happy to help with guidance on PRs, technical writing, and turning any feature idea into a reality.

Prerequisite

node: "^12.20.0 || ^14.13.1 || >=16.0.0"
yarn: "^1.22.10"
# otherwise, your build will fail

Setting up your local repo

Astro uses yarn workspaces, so you should always run yarn install from the top-level project directory. running yarn install in the top-level project root will install dependencies for astro, www, docs, and every package in the repo.

git clone && cd ...
yarn install
yarn build:all

Development

# starts a file-watching, live-reloading dev script for active development
yarn dev
# build the entire project, one time.
yarn build

Running tests

# run this in the top-level project root to run all tests
yarn test
# run only a few tests, great for working on a single feature
# (example - `yarn test -g "RSS"` runs `astro-rss.test.js`)
yarn test -g "$STRING_MATCH"

Other useful commands

# auto-format the entire project
# (optional - a GitHub Action formats every commit after a PR is merged)
yarn format

# lint the project
# (optional - our linter creates helpful warnings, but not errors.)
yarn lint

Making a Pull Request

When making a pull request, be sure to add a changeset when something has changed with Astro. Non-packages (examples/*, docs/*, and www/*) do not need changesets.

yarn changeset

Dependencies

Astro uses esbuild to pre-bundle most dependencies before publishing! Therefore most dependencies, even used in src/ code, should be added under devDependencies by default.

Running benchmarks

We have benchmarks to keep performance under control. You can run these by running (from the project root):

yarn workspace astro run benchmark

Which will fail if the performance has regressed by 10% or more.

To update the times cd into the packages/astro folder and run the following:

node test/benchmark/build.bench.js --save
node test/benchmark/dev.bench.js --save

Which will update the build and dev benchmarks.

Releasing Astro

Note: Only priviledged contributors (L3+) can release new versions of Astro.

The repo is set up with automatic releases, using the changeset GitHub action & bot.

To release a new version of Astro, find the Version Packages PR, read it over, and merge it.

Releasing PR preview snapshots

Our release tool changeset has a feature for releasing "snapshot" releases from a PR or custom branch. These are npm package publishes that live temporarily, so that you can give users a way to test a PR before merging. This can be a great way to get early user feedback while still in the PR review process.

To release a snapshot, run the following locally:

# Note: XXX should be a keyword to identify this release. Ex: `--snapshot routing` & `--tag next--routing`

# 1:
yarn changeset version --snapshot XXX
# 2: (Manual) review the diff, and make sure that you're not releasing more than you need to.
git checkout -- examples/ docs/ www/
# 3:
yarn release --tag next--XXX
# 4: (Manual) review the publish, and if you're happy then you can throw out all local changes
git reset --hard

Full documentation: https://github.com/atlassian/changesets/blob/main/docs/snapshot-releases.md

Releasing astro@next (aka "prerelease mode")

Sometimes, the repo will enter into "prerelease mode". In prerelease mode, our normal release process will publish npm versions under the next dist-tag, instead of the default latest tag. We do this from time-to-time to test large features before sharing them with the larger Astro audience.

While in prerelease mode, follow the normal release process to release astro@next instead of astro@latest. To release astro@latest instead, see Releasing astro@latest while in prerelease mode.

Full documentation: https://github.com/atlassian/changesets/blob/main/docs/prereleases.md

Entering prerelease mode

If you have gotten permission from the core contributors, you can enter into prerelease mode by following the following steps:

  • Run: yarn changeset pre enter next in the project root
  • Create a new PR from the changes created by this command
  • Review, approve, and more the PR to enter prerelease mode.
  • If successful, The "Version Packages" PR (if one exists) will now say "Version Packages (next)".

Exiting prerelease mode

Exiting prerelease mode should happen once an experimental release is ready to go from npm install astro@next to npm install astro. Only a core contributor run these steps. These steps should be run before

  • Run: yarn changeset pre exit in the project root
  • Create a new PR from the changes created by this command.
  • Review, approve, and more the PR to enter prerelease mode.
  • If successful, The "Version Packages (next)" PR (if one exists) will now say "Version Packages".

Releasing astro@latest while in prerelease mode

When in prerelease mode, the automatic PR release process will no longer release astro@latest, and will instead release astro@next. That means that releasing to latest becomes a manual process. To release latest manually while in prerelease mode:

  1. In the code snippets below, replace 0.X with your version (ex: 0.18, release/0.18, etc.).
  2. Create a new release/0.X branch, if none exists.
  3. Point release/0.X to the latest commit for the v0.X version.
  4. git cherry-pick commits from main, as needed.
  5. Make sure that all changesets for the new release are included. You can create some manually (via yarn changeset) if needed.
  6. Run yarn changeset version to create your new release.
  7. Run yarn release to publish your new release.
  8. Run git push && git push --tags to push your new release to GitHub.
  9. Run git push release/0.X:latest to push your release branch to latest. This will trigger an update to the docs site, the www site, etc.
  10. Go to https://github.com/snowpackjs/astro/releases/new and create a new release. Copy the new changelog entry from https://github.com/snowpackjs/astro/blob/latest/packages/astro/CHANGELOG.md.
  11. Post in Discord #announcements channel, if needed!

Translations

Help us translate docs.astro.build into as many languages as possible! This can be a great way to get involved with open source development without having to code.

Our translation process is loosely based off of MDN.

Important: Beta Status

Astro is changing quickly, and so are the docs. We cannot translate too many pages until Astro is closer to a v1.0.0 release candidate. To start, do not translate more than the "getting started" page. Once we are closer to a v1.0.0 release candidate, we will begin translating all pages.

Tier 1: Priority Languages

Tier 1 languages are considered a top priority for Astro documentation. The docs site should be fully translated into these languages, and reasonably kept up-to-date:

  • Simplified Chinese (zh-CN)
  • Traditional Chinese (zh-TW)
  • French (fr)
  • Japanese (ja)

We are always looking for people to help us with these translations. If you are interested in getting involved, please reach out to us on Discord in the i18n channel.

Tier 2 Languages

All other languages are considered Tier 2. Tier 2 language translations are driven by the community, with support from core maintainers. If you want to see the Astro docs site translated into a new language, then we need your help to kick off the project!

If you are interested in getting involved, please reach out to us on Discord in the i18n channel.