# QUALITY_GATES.md — executable frontend gates

The single command that runs **every** gate, locally and in CI:

```bash
npm run verify
```

`verify` chains: `format:check` → `lint` → `build` (`tsc -b && vite build`) →
`test` (`vitest run`) → `governance`. A task is not done until this is green.

## Gate matrix

| Gate                                | Command / rule source                                                                                       | Enforced by            | Scope                                |
| ----------------------------------- | ----------------------------------------------------------------------------------------------------------- | ---------------------- | ------------------------------------ |
| Formatting                          | `npm run format:check` (Prettier)                                                                           | `verify` + lint-staged | Whole repo                           |
| Lint, zero warnings                 | `npm run lint` → `eslint . --max-warnings=0`                                                                | `verify` + CI          | Governed TS/TSX (`eslint.config.js`) |
| Type-check + production build       | `npm run build` → `tsc -b && vite build`                                                                    | `verify` + CI          | Whole app                            |
| Unit tests                          | `npm test` → `vitest run`                                                                                   | `verify` + CI          | `src/test/**`, `config/**/*.test.ts` |
| Conditional rendering (no `: null`) | `no-restricted-syntax` in `eslint.config.js`                                                                | lint                   | Governed TSX                         |
| Boolean-only JSX `&&`               | `seahaven/no-non-boolean-jsx-and` (type-aware) in `eslint-rules/`                                           | lint                   | Governed TSX                         |
| Shared `Text` typography            | `no-restricted-syntax` (raw `p`/`h1`–`h6`) + `seahaven/no-vp-error-outside-text`                            | lint                   | Governed TSX                         |
| Hooks correctness                   | `eslint-plugin-react-hooks` recommended (incl. `exhaustive-deps`) under zero-warnings                       | lint                   | Governed TS/TSX                      |
| Godfile ratchet (file length)       | `scripts/governance-check.mjs` + `scripts/governance-baseline.json`                                         | `governance`           | `src/**`, `config/**` (non-test)     |
| Changed-file maintainability        | `scripts/governance-check.mjs` → ESLint (`complexity`, `max-lines-per-function`, `max-params`, `max-depth`) | `governance`           | Changed TS/TSX vs base ref           |

## No-false-pass guarantees

- **`--max-warnings=0`** — a warning is a failure. There is no "warning-only"
  backlog; rules ship green (see AGENTS.md → How to add a convention).
- **Type-aware rules fail closed** — `seahaven/no-non-boolean-jsx-and` reports
  when type services are unavailable rather than silently claiming safety.
- **Godfile ratchet is monotonic** — any new file over the cap, new baseline
  entry, global cap increase, per-file cap increase, or growth beyond a frozen
  legacy cap fails. Only cap reductions and entry removals are allowed.
- **Changed-file maintainability fails closed without a valid base** — in CI the
  base ref is derived from `GITHUB_BASE_REF` (PR) or `github.event.before`
  (push). An absent or unresolvable base is a failure, not a pass.

## Where the gates run

- **Locally:** `npm run verify`. `lint-staged` (via Husky) re-runs ESLint +
  Prettier on staged files at commit; commitlint enforces Conventional Commits.
- **CI ([`.github/workflows/ci.yaml`](.github/workflows/ci.yaml)):** the org
  reusable workflow (`ci-typescript-frontend.yaml`, Node 24) runs
  format/lint/build/tests, **and** a repo-owned `governance` job runs
  `npm run verify` so the maintainability ratchets are guaranteed from this
  repository regardless of the reusable workflow.

## Toolchain pin

Node ≥ 22.22.1 (CI uses Node 24); npm 11.16.0 via `packageManager` (use
`corepack npm …` if your default `npm` is older). The lockfile is
`package-lock.json` v3; install with `npm ci`.