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Puppeteer Verification

Testing & Quality
puppeteer-verification

Puppeteer Verification is an Agent Skill for testing & quality published in the puppeteer/puppeteer repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.

MANDATORY: Activate this skill ANY TIME you need to build the project, run tests, or verify code health in Puppeteer. You MUST use this skill before executing commands like npm test, npm run build, or linters, as it contains critical, repository-specific instructions on how to correctly format these commands, filter test runs, and interpret failures.

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How to use this skill

Bring this guide into your coding agent with a prompt tailored to the tool you use.

  1. Open your project in Codex.
  2. Copy and paste the prompt below.
  3. Review files and risks before approving any action.
Prompt to paste
Inspect the Agent Skill at https://github.com/puppeteer/puppeteer/blob/HEAD/.agents/skills/puppeteer-verification/SKILL.md and all supporting files. Report provenance, permissions, scripts, dependencies, and security risks. Propose an exact installation into .agents/skills/puppeteer-verification, but wait for my approval before writing files or running scripts.

Copying this prompt does not install or run the skill. Review third-party files before use.

Instructions on how to verify your changes

Testing

  • To test a specific test ALWAYS add .only to the relevant test block, then run npm run test:chrome:headless for Chrome or npm run test:firefox:headless for Firefox.
  • To run unit tests, use npm run unit.

Building & compiling

  • Check for build issues by running npm run build.

Linting

  • npm run format will execute linters and formatters. It will report any violations and automatically fix them where possible.

Best practices

  • Run tests often to verify your changes.
  • Periodically build to check for errors.