chromestatus-ci-verification

name	chromestatus-ci-verification
description	Guidance for local verification of changes to ensure they pass CI checks (linting, type checking, testing, and building).

CI Verification Skill

This skill provides the necessary commands and context to verify your changes locally, matching the checks performed by the GitHub Actions CI pipeline in .github/workflows/ci.yml.

Verification Pipeline

Before submitting a pull request, ensure all the following checks pass.

1. Setup Environment

Ensure your local environment is correctly set up.

make setup

2. Linting

Runs Prettier, ESLint, and Lit-analyzer to check code style and common issues.

make lint

3. Type Checking (Python)

Runs mypy for static type analysis of Python code.

make mypy

4. Backend Tests (Python)

Runs Python unit tests using the Datastore emulator.

npm test

5. Frontend Tests (Lit/Playwright)

Runs web component tests using Playwright.

make webtest

6. Build Assets

Verifies that all assets (JS, CSS, etc.) build correctly.

make build

Summary Command

To run the most critical local checks (test, webtest, lint, mypy) in one go:

make presubmit

Reference

• Build Targets: @Makefile
• Task Scripts: Defined in @package.json.