mourner/flamebearer
A JavaScript CPU trace analysis tool for agents and humans observed · 2026-08-28
Health v2 · maintenance only
92/100
- Activity 89
- Release rhythm 90
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: 0
- age_days: 3079
- days_rel: 69
- days_push: 67
- n_releases_24m: 2
Adoption not part of the score
1661 stars · 29 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
A command-line tool that analyzes JavaScript CPU profiles from Chrome DevTools Performance recordings and Node .cpuprofile files, printing compact text summaries of top CPU offenders, hot source lines, and long tasks. It is designed for performance optimization loops and works for both humans and AI agents, with no GUI required.
Use cases
- summarize a node --cpu-prof cpuprofile from the terminal
- analyze a Chrome DevTools Performance trace as text
- find the hottest functions and source lines in a JS CPU profile
- profile a Node script and see top CPU offenders
- drill into a specific function's stacks in a CPU trace
- feed CPU profile analysis to an AI agent for optimization
- identify long tasks in a performance recording
When to choose
- you want fast, text-based CPU profile analysis without a GUI
- you are optimizing Node.js or browser JavaScript performance in a terminal or automated loop
- you need machine-readable-ish summaries of .cpuprofile or DevTools traces for agents
When to avoid
- you want visual flame graph exploration in a browser — use Speedscope or Chrome DevTools instead
- you need to profile languages other than JavaScript/V8
- you need heap/memory profiling rather than CPU analysis
Facets
cli-tool · maturity active
benchmarking developer-tools cli monitoring developer-tools performance cli cross-platform cpu-profiling flame-graphs v8 chrome-devtools cpuprofile performance-analysis terminal command-line javascript nodejs
1 source
- readme: https://github.com/mourner/flamebearer · fetched 2026-08-28 · c214a4746b31
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| mourner/flamebearer | main | 92 |
For agents
markdown · JSON · MCP: product_card(name="mourner/flamebearer")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem