TypeError: Cannot read properties of undefined (reading 'prototype') when running happy

[bmpimentel9]

Title: TypeError: Cannot read properties of undefined (reading 'prototype') when running happy

Description:

After installing happy-coder globally via npm, the CLI fails to start with a TypeError related to the bundled Claude Code version.

Steps to Reproduce:

1. Install Node.js v25.2.1 via Homebrew
2. Install happy-coder: npm install -g happy-coder
3. Install Claude Code separately: curl -fsSL https://claude.ai/install.sh | bash (version 2.0.60)
4. Run happy --version or just happy

Expected Behavior:

Happy should start normally and display the authentication options (Mobile App or Web Browser).

Actual Behavior:

The command crashes with the following error:

happy version: 0.11.2

TypeError: Cannot read properties of undefined (reading 'prototype')
at file:///opt/homebrew/lib/node_modules/happy-coder/node_modules/@anthropic-ai/claude-code/cli.js:707:25327
at file:///opt/homebrew/lib/node_modules/happy-coder/node_modules/@anthropic-ai/claude-code/cli.js:8:402
at file:///opt/homebrew/lib/node_modules/happy-coder/node_modules/@anthropic-ai/claude-code/cli.js:707:25447
at file:///opt/homebrew/lib/node_modules/happy-coder/node_modules/@anthropic-ai/claude-code/cli.js:8:402
at file:///opt/homebrew/lib/node_modules/happy-coder/node_modules/@anthropic-ai/claude-code/cli.js:709:3204
at file:///opt/homebrew/lib/node_modules/happy-coder/node_modules/@anthropic-ai/claude-code/cli.js:8:402
at file:///opt/homebrew/lib/node_modules/happy-coder/node_modules/@anthropic-ai/claude-code/cli.js:709:6226
at file:///opt/homebrew/lib/node_modules/happy-coder/node_modules/@anthropic-ai/claude-code/cli.js:8:402
at file:///opt/homebrew/lib/node_modules/happy-coder/node_modules/@anthropic-ai/claude-code/cli.js:709:7408
at file:///opt/homebrew/lib/node_modules/happy-coder/node_modules/@anthropic-ai/claude-code/cli.js:8:402

Node.js v25.2.1

Environment:

• OS: macOS (Apple Silicon)
• Node.js: v25.2.1
• npm: Latest version from Homebrew
• happy-coder: v0.11.2 (latest from npm)
• Claude Code (standalone): v2.0.60 (installed separately, works fine)

Additional Context:

The error appears to be in the bundled version of @anthropic-ai/claude-code that ships with happy-coder. The standalone Claude Code CLI (v2.0.60) works perfectly when run directly with the claude command.

The issue seems to be that happy-coder is trying to use its bundled/vendored version of Claude Code which has a compatibility issue, possibly with the newer Node.js version or missing dependencies.

Workaround:

Installing Claude Code separately and using it directly works fine. However, this defeats the purpose of using happy-coder for mobile access.

Suggested Fix:

Consider either:

1. Updating the bundled Claude Code version in happy-coder
2. Making happy-coder use the system-installed Claude Code CLI instead of bundling it
3. Adding better error handling for version compatibility issues

[tiann]

Please try: #77 (comment)