Playwright Dev

microsoft/playwrightOfficial

If you're contributing to Playwright itself or need to understand its internals, this walks you through the architecture and development workflow. It covers adding new APIs with proper client/server implementation, creating MCP tools and CLI commands, and managing vendored dependencies across the different bundles (utils, core, babel). The guides explain the dispatcher protocol layer, DEPS rules for dependency management, and practical tasks like updating the WebKit Safari version string or bisecting regressions across published npm versions. Most useful when you're extending Playwright's functionality or debugging issues that require understanding how the library's protocol and bundling actually work under the hood.

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3.7K

GitHub stars

98.6K

last updated

Aug 21, 2026

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