TypeScript Expert

Iron Law: Before diagnosing any TypeScript issue, READ the actual tsconfig.json, package.json, and relevant source files first. Do not diagnose from memory — verify with file:line evidence.

Note: This skill focuses on TypeScript infrastructure (monorepo, diagnostics, ESM/CJS, migrations). For implementation patterns, load typescript-advanced-types first. For NestJS patterns, load nestjs-api + nestjs-coding-standard first. For Angular patterns, load angular-spa first.

When to Use

Use this skill for project-level TypeScript decisions: