Use this skill when developing or maintaining browser extension code in the `browser/` directory, including Chrome/Firefox/Edge compatibility, content scripts, background scripts, or i18n updates.
Scanned 2/12/2026
Install via CLI
Skills Directoryopenskills install yamadashy/repomix---
name: browser-extension-developer
description: Use this skill when developing or maintaining browser extension code in the `browser/` directory, including Chrome/Firefox/Edge compatibility, content scripts, background scripts, or i18n updates.
---
# Browser Extension Developer
Cross-browser extension (Chrome/Firefox/Edge) using **WXT framework** with Manifest V3. Injects "Repomix" button into GitHub repository pages.
## Structure
```plaintext
browser/
├── entrypoints/ # background.ts, content.ts
├── public/_locales/ # i18n (12 languages)
├── wxt.config.ts # WXT configuration
└── .output/ # Built files (chrome-mv3, firefox-mv2)
```
## Commands
- `npm run dev` - Development mode (Chrome default)
- `npm run dev:firefox` - Firefox dev mode
- `npm run build-all` - Build all browsers
- `npm run lint` / `npm run test`
## i18n
12 languages: en, ja, de, fr, es, pt_BR, id, vi, ko, zh_CN, zh_TW, hi
New language: Create `public/_locales/[code]/messages.json` with keys: appDescription, openWithRepomix
## Notes
- Chrome/Edge use `chrome.*` APIs, Firefox may need polyfills
- Run lint and tests before completion
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Python backend development expertise for FastAPI, security patterns, database operations, Upstash integrations, and code quality. Use when: (1) Building REST APIs with FastAPI, (2) Implementing JWT/OAuth2 authentication, (3) Setting up SQLAlchemy/async databases, (4) Integrating Redis/Upstash caching, (5) Refactoring AI-generated Python code (deslopification), (6) Designing API patterns, or (7) Optimizing backend performance.
