JS / TS Ops

Debugging and automation specialist for JavaScript / TypeScript / Node.js (Node 20+, TS 5.x) — the operational complement to design-focused skills. Use this skill whenever you need to DIAGNOSE a Node/TS failure or AUTOMATE a JS/TS workflow: reading sync and async stack traces, attaching `node --inspect` / Chrome DevTools / VS Code debuggers, hunting unhandled promise rejections, finding event-loop blocking with `--prof` / clinic.js, capturing and reading heap snapshots for memory leaks, untangling ESM ↔ CommonJS interop errors, decoding TypeScript compiler errors and tsconfig module/moduleResolution mistakes, fixing source maps that don't map, resolving EADDRINUSE / ECONN…