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chromestatus-frontend

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Guidance for working on the Lit-based frontend, Shoelace widgets, and client-side routing in chromium-dashboard.

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How to use this skill

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  2. Copy the prompt below and paste it into your agent.
  3. Review the proposed files and risks before you approve installation.
Prompt to paste
I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/GoogleChrome/chromium-dashboard/blob/HEAD/.agents/skills/chromestatus-frontend/SKILL.md

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First, summarize what it does, its dependencies, license status if identifiable, and any risks. Show the exact files you propose to add under .agents/skills/chromestatus-frontend/. Do not write files or run scripts until I approve.

After I approve, install the complete skill folder, including required referenced files, into that project location. Verify it is discoverable, then tell me its actual invocation name and how to use it. Do not claim it is installed until you have verified it.

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

Frontend Development Skill

This skill provides context and guidelines for developing the frontend of the chromium-dashboard project.

Core Technologies

  • Lit: The primary library for building web components.
  • Shoelace: A collection of high-quality UI widgets used throughout the application.
  • page.js: A micro client-side router for SPA navigation.
  • Rollup: Used for bundling and code-splitting JavaScript.

Key Directories

  • client-src/elements/: Contains Lit web components.
  • client-src/js-src/: General JavaScript source files, including cs-client.js.
  • client-src/css/: CSS files and Lit style modules.
  • static/dist/: Output directory for bundled assets.
  • templates/: Jinja2 templates for the initial page load skeleton.

Guidelines

  • Component Development: Create new components in client-src/elements/. Follow the naming convention chromedash-*.js.
  • Icons: Prefer Material Icons. If using Bootstrap icons via Shoelace, ensure they are copied to static/shoelace/assets/icons.
  • API Interaction: Use the client wrapper in cs-client.js or the OpenAPI context consumer for making server requests.
  • Styling: Use Lit's css tagged templates for component styles. Leverage variables from the design system where possible.
  • Legacy Code: Do not add new code or components to the legacy pages/ directory on the backend, even if it contains old templates. All newer frontend logic should reside in client-src/.

Common Tasks

  • Adding a New Page: Register the route in chromedash-app.js (within setUpRoutes) and create the corresponding Lit component.
  • Building assets: Use make watch during development for live-reloading or make build for a final build.