123 lines
4.8 KiB
Markdown
123 lines
4.8 KiB
Markdown
# Contributing to Cozy Games
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Thanks for your interest in contributing! This guide covers what you need to
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develop, test, and submit changes.
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> Working as an AI coding agent? See [AGENTS.md](AGENTS.md) for machine-oriented
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> guidance. This document is for human contributors.
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## Prerequisites
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- **Node.js** — the version pinned in [`.nvmrc`](.nvmrc) (`lts/*`). With
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[nvm](https://github.com/nvm-sh/nvm): `nvm use`.
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- **pnpm** — this is a [pnpm](https://pnpm.io) workspace; **pnpm is required**
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(npm/yarn will not work). The repo pins its pnpm version via the
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`packageManager` field, so the simplest way to get the right one is Corepack:
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`corepack enable`.
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- **Java (JDK 11+, 21 recommended)** — only needed to run the local Firestore
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emulator (used by the mnswpr app's leaderboard in development). `pnpm install`
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tries to install a user-local Temurin JRE automatically; if that is skipped (CI
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or an unsupported platform) install a JDK yourself. You can avoid Java entirely
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with the `dev:no-db` script below.
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## Project Structure
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- `apps/` - Playable games (each deploys independently)
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- `packages/` - Shared, publishable libraries
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- `sites/` - Docs (Astro Starlight) and UI demos — placeholders for now
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```
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Each app owns its own backend config (e.g. mnswpr's Firestore rules live in
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`apps/mnswpr/`); the shared packages stay backend-agnostic.
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## Setup
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```bash
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pnpm i # install all workspace dependencies
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```
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## Workspace commands (run from the repo root)
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```bash
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pnpm test # run the whole test suite once (Vitest, jsdom)
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pnpm test:watch # tests in watch mode
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pnpm lint # eslint (JS + CSS)
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pnpm lint:fix # eslint --fix
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pnpm build:lib # build the publishable engine -> packages/mnswpr/dist
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```
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## Running a game locally
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Apps aren't run from the root — target one by name with pnpm's `-F` filter. Apps
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are named `<name>` (e.g. `mnswpr`), so every app runs the same way
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(`pnpm -F <name> run <script>`):
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```bash
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pnpm -F mnswpr run dev # Vite dev server + Firestore emulator (auto-seeded) — needs Java
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pnpm -F mnswpr run dev:no-db # Vite only, no emulator (UI work, or no Java)
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pnpm -F mnswpr run build # build the app -> apps/mnswpr/dist
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pnpm -F mnswpr run preview # preview the production build
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```
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## Tests
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Tests run under **Vitest** with a **jsdom** environment and live next to the code
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they exercise (`packages/*/test/`). They drive real behavior — e.g. mounting the
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game and dispatching DOM events — not just isolated unit calls. Run `pnpm test`
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(or `pnpm test:watch`) before opening a PR, and add tests for new behavior.
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## Code style
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Style is enforced by **ESLint (Stylistic)**, not Prettier:
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- 2-space indent, single quotes, **no semicolons**, no trailing commas
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- spaces inside `{ braces }` but not `[brackets]`
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- both `**/*.js` and `**/*.css` are linted
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Run `pnpm lint:fix` before committing. The codebase is **plain JavaScript with
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JSDoc + `// @ts-check`** — no TypeScript. Match the style and patterns of the file
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you're editing (the game engine uses plain functions and closures; `packages/utils`
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and the app modules use ES classes).
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A **pre-commit hook** runs the linter and a secret scan automatically — commits
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fail if either does. Keep credentials and any `.env.production` out of commits.
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## Infra & local backend (optional)
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Only relevant if you're working on backend-touching features. Every app **owns its
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own backend config** (declarative, committed in-repo) and its tooling (CLIs as
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devDependencies) — no web dashboards. For mnswpr (Firestore + Netlify), the local
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DB emulator is all a contributor needs:
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```bash
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pnpm -F mnswpr run db:start # start the local Firestore emulator (standalone) — needs Java
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pnpm -F mnswpr run db:seed # seed the running emulator with sample data
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pnpm -F mnswpr run db:stop # stop a stray emulator holding :8080
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```
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Deploy scripts (`deploy:db`, `deploy:site`) also exist but require project
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credentials, so they're for maintainers. See
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[apps/mnswpr/README.md](apps/mnswpr/README.md) and that app's `docs/` for the full
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backend reference.
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## Project structure & decisions
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The repo layout is in the [README](README.md#layout). Significant architecture
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choices are recorded in [`docs/decisions/`](docs/decisions/) — worth a read before
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a large change. Shared packages stay backend-agnostic; each app owns its own
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backend config.
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## Submitting changes
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1. Create a branch off `main`.
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2. Make a focused change.
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3. Run `pnpm lint` and `pnpm test` — both must pass.
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4. Write clear, conventional commit messages (`feat:`, `fix:`, `chore:`, …).
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5. Open a pull request describing **what** changed and **why**; link any related issue.
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For anything large, open an issue to discuss the approach first.
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## License
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By contributing, you agree that your contributions are licensed under the
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project's [BSD-2-Clause license](LICENSE).
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