playwright-devpar microsoft
Guide for extending Playwright with new APIs, MCP tools, CLI commands, and vendored dependencies. Covers monorepo structure, build/test/lint workflows, and coding conventions via CLAUDE.md reference Includes detailed walkthroughs for implementing client/server APIs, writing tests, and modifying protocol layers Explains how to add MCP tools, CLI commands, and configuration options within the Playwright ecosystem Documents the vendoring process for bundling third-party npm packages into...
npx skills add https://github.com/microsoft/playwright --skill playwright-devPlaywright Development Guide
See CLAUDE.md for monorepo structure, build/test/lint commands, and coding conventions.
Detailed Guides
- Library Architecture — client/server/dispatcher structure, protocol layer, DEPS rules
- Adding and Modifying APIs — define API docs, implement client/server, add tests
- MCP Tools and CLI Commands — add MCP tools, CLI commands, config options
- Vendor Dependencies & Bundling — utilsBundle, coreBundle, babelBundle; adding vendored npm packages; DEPS.list;
check_deps - Updating WebKit Safari Version — update the Safari version string in the WebKit user-agent
- Bisecting Across Published Versions — reproduce regressions side-by-side from npm and diff
node_modules/playwright/lib/between versions - Dashboard - the UI powering the "playwright cli show" command, and how to work on it
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