skills.rest
caraya
carayaCOMMUNITY
Explore all skills by this author →
Website𝕏@elrond25GitHub

javascript-performance

Analyze JavaScript performance with profiling, memory analysis, and event loop diagnostics.

1|Updated Mar 22, 2026
Search Tags:#performance#javascript#memory#profiling#nodejs#event-loop
One-click install
npx skills add https://github.com/caraya/agent-skills --skill javascript-performance
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: javascript-performance
Source: https://github.com/caraya/agent-skills/tree/main/skills/javascript-performance
Command: npx skills add https://github.com/caraya/agent-skills --skill javascript-performance

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

JavaScript performance analysis identifies bottlenecks in Node.js and browser runtimes, helping teams reduce latency, boost throughput, and stabilize memory usage.

Core Features & Use Cases

  • Profiling workflows for event loop, CPU, and memory across server and client environments.
  • Tooling integration with node --prof, heap snapshots, Clinic.js, 0x, and Chrome DevTools.
  • Use Case: optimize a high‑traffic API by eliminating event loop stalls and memory leaks.

Quick Start

Run a profiling session on a Node.js application to locate CPU hotspots and memory allocations, then apply targeted fixes.

Frequently Asked Questions about javascript-performance

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I find memory leaks and CPU hotspots in a Node.js application?▼

You can find memory leaks and CPU hotspots in a Node.js application by running profiling sessions with tools like node --prof, heap snapshots, and Clinic.js to locate memory allocations and apply targeted fixes.

What is the best way to diagnose event loop stalls in high-traffic APIs?▼

Diagnosing event loop stalls in high-traffic APIs involves applying event loop diagnostics and profiling workflows across server environments, using flame graphs to identify and eliminate blocking operations for measurable improvements.

Does this profiling workflow support both Node.js and browser environments?▼

Yes, the profiling workflow supports both Node.js and browser environments, applying event loop, CPU, and memory analysis across server and client runtimes using integrated tooling like Chrome DevTools, Clinic.js, and 0x.

How do I use Chrome DevTools and 0x for JavaScript memory analysis?▼

You use Chrome DevTools and 0x for JavaScript memory analysis by capturing heap snapshots and generating flame graphs, allowing you to visualize CPU usage and memory allocations to provide actionable recommendations.

Why should I use Clinic.js for profiling instead of standard node --prof?▼

Using Clinic.js alongside standard node --prof provides deeper event loop diagnostics and visualizes CPU hotspots, ensuring measurable throughput improvements and stabilized memory usage for real-world applications.

Related Skills

Explore More Software Engineering Skills→
JuanTaco4YouJuanTaco4You

performance-benchmark-profile

Run repeatable benchmarks measuring latency, throughput, CPU, and memory.

Community
Intermediate
majunbaomajunbao

openclaw-test-heap-leaks

Analyze OpenClaw test heap snapshots to identify memory leaks and RSS spikes.

Community
Intermediate
johnlindquistjohnlindquist
24

perf

Identify and reduce performance bottlenecks in Node.js, browser, and Lighthouse workflows.

Community
Advanced
4lerman4lerman

performance-profiler

Profile Node.js, Python, and Go applications for CPU, memory, and I/O bottlenecks.

Community
Advanced