Claude Code — Compiled & Fixed

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A working, buildable version of the Claude Code CLI, reconstructed from the leaked source (2026-03-31) with all missing files, broken imports, and runtime errors fixed.

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What This Is

On March 31, 2026, the full source code of Anthropic's Claude Code CLI was leaked via a .map file in their npm registry. The original leak is not buildable — it's missing 22+ source files, has broken internal imports, uses Anthropic-internal packages, and relies on unreleased Bun features (bun:bundle).

This repo fixes all of that. The result: a single bun build command that produces a working ~23MB bundle.

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Changes From the Original Leak

Missing Source Files Added (22 stubs)

The leaked source references files that don't exist in the package. These have been created as functional stubs:

File	Purpose
src/global.d.ts	TypeScript global declarations
src/utils/protectedNamespace.ts	Namespace protection
src/utils/useEffectEvent.ts	React useEffectEvent polyfill
src/entrypoints/sdk/coreTypes.generated.ts	SDK generated types
src/entrypoints/sdk/runtimeTypes.ts	SDK runtime types
src/entrypoints/sdk/toolTypes.ts	SDK tool types
src/tools/REPLTool/REPLTool.ts	REPL tool stub
src/tools/SuggestBackgroundPRTool/	PR suggestion stub
src/tools/VerifyPlanExecutionTool/	Plan verification stub
src/tools/WorkflowTool/	Workflow tool stub
src/tools/TungstenTool/TungstenLiveMonitor.tsx	Tungsten monitor stub
src/commands/agents-platform/	Agent platform command stub
src/commands/assistant/	Assistant command stub
src/components/agents/SnapshotUpdateDialog.tsx	Snapshot dialog stub
src/assistant/AssistantSessionChooser.tsx	Session chooser stub
src/services/compact/snipCompact.ts	Snip compact stub
src/services/compact/cachedMicrocompact.ts	Microcompact stub
src/services/contextCollapse/	Context collapse stub
src/ink/devtools.ts	Devtools stub
src/skills/bundled/verify/	Verify skill stub
src/utils/filePersistence/types.ts	File persistence types stub

Source Code Fixes

Fix	File(s)	Description
useEffectEvent import	src/components/tasks/BackgroundTasksDialog.tsx, src/state/AppState.tsx	React 19 experimental hook not available in react-reconciler@0.31 — moved to local polyfill
Version check skip	src/utils/autoUpdater.ts	assertMinVersion() calls Anthropic servers — bypassed
Org validation skip	src/main.tsx	validateForceLoginOrg() requires Anthropic auth — commented out
Auth check skip	src/main.tsx	Login flow requires Anthropic OAuth — auto-execute enabled
SandboxManager stub	node_modules/@anthropic-ai/sandbox-runtime/	Replaced minimal 14-method stub with real implementation from anthropic-experimental/sandbox-runtime

Shim Files (Bun compatibility)

File	Purpose
shims/macro.ts	Provides MACRO global (VERSION, BUILD_TIME, etc.) — normally injected by Anthropic's Bun build
shims/bun-bundle.ts	Provides feature() function stub — replaces bun:bundle which is Anthropic-internal

Missing Dependencies (28 packages added)

The original package.json was incomplete. 28 missing dependencies have been added, including @anthropic-ai/ SDKs, OpenTelemetry packages, and other required modules.

Internal Package Stubs

Two Anthropic-internal packages that can't be installed from npm:

• @anthropic-ai/sandbox-runtime — replaced with real open-source implementation
• @ant/claude-for-chrome-mcp — stubbed in node_modules/

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Quick Start

Prerequisites

• Bun 1.3+ — curl -fsSL https://bun.sh/install | bash
• Node.js 18+ (optional, Bun includes npm)

Build

git clone https://github.com/roger2ai/Claude-Code-Compiled.git
cd Claude-Code-Compiled

# Install dependencies (postinstall auto-creates stubs + patches Commander.js)
bun install

# Build
bun build shims/macro.ts src/main.tsx --target=bun --outdir=./dist

# Bundle into single file
cat dist/shims/macro.js dist/src/main.js > dist/bundle.js
echo 'if (typeof main === "function") main().catch(e => { console.error(e); process.exit(1); });' >> dist/bundle.js

Output: dist/bundle.js (~23 MB, ~5,750 modules, ~300ms build time)

Run

# Help (no API key needed)
bun dist/bundle.js --help

# Interactive REPL (requires real terminal + API key)
export ANTHROPIC_API_KEY=your-key
bun dist/bundle.js

# One-shot mode
bun dist/bundle.js -p "say hello"

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Project Structure

claude-code/
├── src/                  # Source (~1,900 TypeScript files, 512K+ lines)
│   ├── main.tsx          # CLI entrypoint
│   ├── QueryEngine.ts    # LLM query engine
│   ├── Tool.ts           # Tool type definitions
│   ├── tools/            # 43 tool implementations
│   ├── commands/         # 80+ slash commands
│   ├── components/       # 346 React/Ink UI components
│   ├── services/         # 21 service modules
│   ├── screens/          # Full-screen UIs (REPL, Doctor, etc.)
│   └── utils/            # 290+ utility files
├── shims/                # Bun compatibility shims
├── docs/                 # Architecture & build documentation
├── dist/                 # Build output (gitignored)
└── package.json          # Dependencies (574 packages)

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Documentation

Document	Content
docs/ARCHITECTURE.md	Full architecture overview
docs/ARCHITECTURE-TOOLS.md	43 tool implementations
docs/ARCHITECTURE-SERVICES.md	21 service modules
docs/ARCHITECTURE-COMPONENTS.md	346 UI components
docs/ARCHITECTURE-COMMANDS.md	Commands, skills, plugins
docs/ARCHITECTURE-UTILS.md	Utility layer
docs/ARCHITECTURE-BRIDGE-REMOTE.md	IDE bridge & remote sessions
docs/API-CONFIG.md	API configuration (env vars, auth, proxies)
docs/BUILD.md	Detailed build guide & all patches
docs/REFACTORING-ASSESSMENT.md	Refactoring feasibility analysis

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Feature Completeness

Core Tools — All Working ✅

Tool	Description
BashTool	Shell command execution
FileReadTool	File reading (images, PDFs, notebooks)
FileWriteTool	File creation / overwrite
FileEditTool	Partial file modification
GlobTool	File pattern matching
GrepTool	ripgrep-based content search
WebFetchTool	Fetch URL content
WebSearchTool	Web search
AgentTool	Sub-agent spawning
SkillTool	Skill execution
NotebookEditTool	Jupyter notebook editing
AskUserQuestionTool	Interactive prompts
MCPTool	MCP server tool invocation
ListMcpResourcesTool / ReadMcpResourceTool	MCP resource access

Conditionally Enabled Tools

Tool	Condition	Status
LSPTool	Set ENABLE_LSP_TOOL=true	Works
PowerShellTool	Windows environment	Works
EnterWorktreeTool / ExitWorktreeTool	Config enabled	Works
TaskCreateTool / TaskGetTool / TaskUpdateTool / TaskListTool	Config enabled	Works
TeamCreateTool / TeamDeleteTool	Agent Swarms config	Works
ToolSearchTool	Config enabled	Works

Disabled Internal Features (80+ feature flags off)

These Anthropic-internal experimental features are disabled via feature() flags and do not affect core CLI usage:

Feature	Impact
Voice Mode (VOICE_MODE)	Voice input unavailable
Proactive Mode (PROACTIVE)	SleepTool, proactive alerts unavailable
Agent Swarms (TEAMMEM, BG_SESSIONS)	Multi-agent coordination unavailable
Cron Scheduling (AGENT_TRIGGERS)	Scheduled triggers unavailable
Computer Use (CHICAGO_MCP)	Desktop automation unavailable — requires Anthropic internal native modules
Claude in Chrome (CHICAGO_MCP)	Browser integration unavailable
KAIROS (KAIROS)	Anthropic internal assistant mode unavailable
Transcript Classifier (TRANSCRIPT_CLASSIFIER)	Auto permission classification unavailable

Stub Tools (auto-filtered, zero runtime impact)

Tool	Reason
REPLTool	Gated behind USER_TYPE=ant
SuggestBackgroundPRTool	Gated behind USER_TYPE=ant
VerifyPlanExecutionTool	Gated behind CLAUDE_CODE_VERIFY_PLAN
WorkflowTool	Gated behind feature('WORKFLOW_SCRIPTS')
TungstenTool	Gated behind USER_TYPE=ant

Missing Internal Packages (auto-created by postinstall)

All @ant/* package references are behind feature() guards and tree-shaken at build time. Stubs are auto-created by scripts/postinstall.sh after bun install:

Package	Purpose	How It's Handled
@ant/claude-for-chrome-mcp	Chrome browser MCP	Stub in postinstall — dead code
@ant/computer-use-mcp	Computer Use MCP	Stub in postinstall — dead code
@ant/computer-use-input	Mouse/keyboard control	Stub in postinstall — dead code
@ant/computer-use-swift	macOS native screenshots	Stub in postinstall — dead code

Summary: All core CLI functionality (file ops, commands, search, API calls, MCP) works. Missing features are Anthropic-internal experiments not available in the official release either.

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Known Limitations

1. TUI requires a real terminal — silent exit in pipes or non-TTY environments
2. API key required — ANTHROPIC_API_KEY must be set for actual queries
3. macOS Keychain — falls back to plaintext file on Linux
4. Sandbox on WSL2 — requires apt install bubblewrap socat for sandbox features