How do I install the TS Performance skill?

Run npx skillmds@latest add tomjiu/ts-performance in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the TS Performance skill do?

Use when optimizing TypeScript/Node or frontend performance — profiling, bundle size, async bottlenecks, React render costs. Measure with real tooling before rewriting. It is listed under Web & Frontend on SkillMD.

Is TS Performance safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with TS Performance?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is TS Performance free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published TS Performance?

tomjiu (@tomjiu) published this skill. Their other Agent Skills are listed on their SkillMD profile.

TS Performance by tomjiu — Agent Skill

Name: TS Performance
Author: tomjiu

File contents

TypeScript / JS Performance

Sources

Node diagnostics: https://nodejs.org/en/learn/diagnostics
TypeScript: https://github.com/microsoft/TypeScript
Web Vitals / browser: use DevTools Performance panel or Chrome DevTools MCP when UI-bound
Local: performance-optimization skill (Addy) for broader checklist

Rules

Separate Node server vs browser bottlenecks.
Prefer profiler evidence over “switch library” guesses.
Keep TypeScript strict gains; don’t disable checks for speed myths.

Node

node --cpu-prof app.js
node --heap-prof app.js
# clinic / 0x / chrome://inspect as available
npm run build   # compare bundle analyzer if frontend

Browser / frontend

Performance panel: long tasks, layout thrash, LCP/CLS/INP
React: unnecessary re-renders, list virtualization, memo only when measured
Network: waterfalls, cache, compression

Checklist

Repro scenario fixed
Profile captured (CPU or Performance trace)
Top cost named with evidence
Patch + before/after metric

performance-optimization
browser-testing-with-devtools / playwright MCP when UI
source-driven-development for framework docs

Frequently asked questions

TS Performance