TWBG_Materials/文档润色流和知识库构建流/claude-scholar/skills/bug-detective/references/javascript-errors.md

JavaScript / TypeScript Error Guide

Frequent failure classes

• TypeError from undefined/null access
• async error swallowing in Promise chains
• this binding mismatches
• stale closure bugs in hooks or event handlers
• ESM / CJS import mismatches

Minimum debugging flow

1. copy the full stack trace,
2. identify whether the failure is runtime, bundler, or type-level,
3. confirm the failing object/value before changing logic,
4. reproduce with the smallest possible input.