CONTRIBUTING.md

Want to contribute? Great! First, read this page (including the small print at the end).

Before you contribute

Before we can use your code, you must sign the Google Individual Contributor License Agreement (CLA), which you can do online. The CLA is necessary mainly because you own the copyright to your changes, even after your contribution becomes part of our codebase, so we need your permission to use and distribute your code. We also need to be sure of various other things—for instance that you'll tell us if you know that your code infringes on other people's patents. You don't have to sign the CLA until after you've submitted your code for review and a member has approved it, but you must do it before we can put your code into our codebase. Before you start working on a larger contribution, you should get in touch with us first through the issue tracker with your idea so that we can help out and possibly guide you. Coordinating up front makes it much easier to avoid frustration later on.

Code reviews

All submissions, including submissions by project members, require review.

Coding Style

For consistency, please ensure that all TypeScript/JavaScript files are linted with Biome and formatted by prettier.

You can check for lint/format issues with:

npm run lint:check
npm run format:check

To reformat run:

npm run format:fix

To automatically apply safe lint fixes, run:

npm run lint:fix

Python code is linted and formatted using ruff and typechecked using mypy. To verify, run:

pip install nox
nox -s lint format mypy

The small print

Contributions made by corporations are covered by a different agreement than the one above, the Software Grant and Corporate Contributor License Agreement.