Claude Code Working

claude-code-working

A working reverse-engineered Claude Code CLI codebase rebuilt from source analysis to reproduce the original terminal workflow, architecture, and engineering behavior.

[Start with the architecture docs](./docs/introduction/what-is-claude-code.mdx)

Current focus:

• The codebase runs and passes baseline type checks.
• The monorepo and engineering scaffolding are in place.
  • Biome formatting is intentionally conservative to avoid massive diff churn.
  • The build pipeline produces runnable Node and Bun output.
• The documentation set is available in English.
• More tests can still be added to improve confidence and stability.

Quick start

Environmental requirements

You must have the latest version of bun, otherwise there will be a bunch of weird bugs!!! bun upgrade!!!

• Bun >= 1.3.11
• Conventional way to configure CC, each major provider has its own configuration method

Installation

bun install

Run

# Development mode, if you see the version number 888, it means it is correct
bun run dev

# Build
bun run build

The build uses code splitting multi-file packaging (`build.ts`), and the product is output to the `dist/` directory (entry `dist/cli.js` + about 450 chunk files).

The built version can be started by both bun and node. You can start it directly by publishing it to a private source.

If you encounter a bug, please raise an issue directly and we will resolve it first.

Related documentation

• Architecture overview
• Conversation model
• Tools and execution
• Safety and permissions
• Extensibility

Capability list

✅ = implemented ⚠️ = partially implemented / conditionally enabled ❌ = stub / removed / feature flag closed

Core System

| Cap