---
title: Code Styleguide — JavaScript
last_modified: 2026-02-22
---

1. Use `const` for everything. If you need to reassign, use `let`. Never use
   `var`.

1. Use yarn for package management, avoid using npm.

1. Use LTS node versions.

1. Use `prettier` for code formatting, with four spaces for indentation.

1. At a minimum, both `yarn run test`/`yarn run build` and
   `npm run test`/`npm run build` should work (complete the appropriate scripts
   in `package.json`). However, prefer `make test` and `make build` instead —
   the Makefile is authoritative on how to interact with the repo. See
   [Repository Policies](https://git.eeqj.de/sneak/prompts/raw/branch/main/prompts/REPO_POLICIES.md)
   for details.

# Author

[@sneak](https://sneak.berlin)
<[sneak@sneak.berlin](mailto:sneak@sneak.berlin)>

# License

MIT. See [LICENSE](../LICENSE).