[GitHub Trending] GoogleChrome/modern-web-guidance-src

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Google's web best practices guidance for coding agents, useful for keeping AI tools current.

AI/ML github.com

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Why It Matters

For a platform engineer building with AI agents, this directly addresses the critical problem of LLMs generating bloated, legacy-dependent code by providing a structured, browser-vendor-validated knowledge layer that keeps agents current with modern web APIs and performance best practices.

Key Takeaways

Integrate `npx modern-web-guidance@latest legacy-scan` into your CI pipeline to automatically detect and modernize legacy patterns in your codebase, reducing technical debt and improving performance.

Keep your coding agent up to date with the latest web best practices - GoogleChrome/modern-web-guidance-src

Summary

Google Chrome, Microsoft Edge, Mozilla Firefox, and MDN teams have open-sourced Modern Web Guidance, a CLI tool that injects token-efficient, expert-curated web platform best practices into coding agents. The tool covers 250 modern web features across CSS layout, performance, accessibility, and built-in AI APIs, steering agents away from legacy patterns common in LLM training data. It includes a `legacy-scan` command to identify outdated patterns in codebases and provides guides for APIs like View Transitions, Container Queries, and the Popover API.