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Electron App Extractor

Unpacks an installed Electron app's app.asar, restoring original sources from .js.map files or Prettier-formatting minified code.

Dev & CodingIntermediate★ 26,102⑂ 2,884AI score 9/10Last updated: Sep 10, 2026

What it does

Locates an installed Electron desktop app (a macOS .app, a Windows install directory, or an explicit .asar path) and unpacks its app.asar bundle.

  • Rebuilds the original project tree into restored/ when .js.map files embed sourcesContent
  • Prettier-formats minified JS/CSS in place when no usable source map exists
  • Always skips node_modules and bundler runtime noise
  • Writes extract-report.json with counts, warnings, and resolved paths
  • Supports --dry-run, --force, --json, --output, --asar, and skip flags

Who it's for

  • Developers curious about how a desktop Electron app is built
  • Release engineers auditing whether shipped builds leak source maps
  • Engineers studying competitor UI implementations for learning purposes

Examples

  1. "Get the source code of Codex" → original tree restored under ~/Downloads/Codex-electron-extract/restored/
  2. "Look inside /Applications/Visual Studio Code.app" → asar extracted and unmapped bundles formatted with Prettier
  3. "Check if our release build still ships source maps" → run with --dry-run to confirm discovery, then extract and read the report's warnings

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/JimLiu/baoyu-skills/HEAD/skills/baoyu-electron-extract/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the skills/baoyu-electron-extract folder from the GitHub repo JimLiu/baoyu-skills into my ~/.claude/skills/baoyu-electron-extract/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/JimLiu/baoyu-skills.git /tmp/baoyu-skills && mkdir -p ~/.claude/skills && cp -r /tmp/baoyu-skills/skills/baoyu-electron-extract ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal and verify you have bun --version or npx --version; install Node.js (which provides npx) or bun if neither exists.
  2. Clone the repository: git clone https://github.com/JimLiu/baoyu-skills.git /tmp/baoyu-skills
  3. Create the skills folder: mkdir -p ~/.claude/skills
  4. Copy the skill: cp -r /tmp/baoyu-skills/skills/baoyu-electron-extract ~/.claude/skills/
  5. Restart Claude Code and try a prompt like "extract this Electron app's app.asar".
  6. The first run is slower because npx downloads @electron/asar and prettier; network access is required.
View source on GitHub ↗License: MIT