Contributing

⚠ The default branch has just been switched to main from master (as of May 15th, 2024). Follow the following instructions to update your local fork.

git branch -m master main   # rename local branch
git fetch origin   # fetch from remote
git branch -u origin/main main   # set upstream
git remote set-head origin -a   # update remote

When it comes to open source, there are different ways you can contribute, all of which are valuable. Here's few guidelines that should help you as you prepare your contribution.

Initial steps

Before you start working on a contribution, create an issue describing what you want to build. It's possible someone else is already working on something similar, or perhaps there is a reason that feature isn't implemented. The maintainers will point you in the right direction.

Development

The following steps will get you setup to contribute changes to this repo:

1. Fork this repo.

2. Clone your forked repo: git clone git@github.com:{your_username}/zod.git

3. Run yarn to install dependencies.

4. Start playing with the code! You can do some simple experimentation in playground.ts (see yarn play below) or start implementing a feature right away.

Alternative: VSCode Dev Container setup

For an officially supported isolated dev environment that automatically installs dependencies for you:

1. F1 in VSCode and start typing Dev Containers: Clone Repository in Named Container Volume to run the command.
2. For the repo, paste git@github.com:{your_username}/zod.git if you're using ssh.
3. Click Create a new volume... and name it zod and the folder name as zod.

Note: if you can't see Dev Containers in the F1 menu, follow this guide to install the needed extension. In the OSS version of VSCode the extension may be not available.

Commands

yarn build

• deletes lib and re-compiles src to lib

yarn test

• runs all Jest tests and generates coverage badge

yarn test enum

• runs a single test file (e.g. enum.test.ts)

yarn play

• executes playground.ts, watches for changes. useful for experimentation

Tests

Zod uses Jest for testing. After implementing your contribution, write tests for it. Just create a new file under src/__tests__ or add additional tests to the appropriate existing file.

Before submitting your PR, run yarn test to make sure there are no (unintended) breaking changes.

Documentation

The Zod documentation lives in the README.md. Be sure to document any API changes you implement.

License

By contributing your code to the zod GitHub repository, you agree to license your contribution under the MIT license.