# lahmatiy/react-render-tracker

React render tracker – a tool to discover performance issues related to unintentional re-renders and unmounts

Repository: https://github.com/lahmatiy/react-render-tracker
Canonical: https://ross.abutalabs.com/products/react-render-tracker
Homepage: https://lahmatiy.github.io/react-render-tracker/
Language: TypeScript
License: MIT
License Family: permissive
Topics: react, devtools, performance, rerender
Last push: 2025-03-31T23:51:08+00:00

## Health v2 (maintenance only)
Score: 36/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 14, release rhythm 28, longevity 100
- inputs: {"age_days": 1864, "days_push": 520, "days_rel": 520, "gap_med": 46, "n_releases_24m": 2}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2403, forks 36 (observed 2026-08-28T04:06:43.953078+00:00)

## What it is
React Render Tracker is a devtool library that visualizes a React app's component tree state over time to uncover performance issues from unintended re-renders and unmounts. It complements React DevTools with an event log, props/context update matrices, and rendering timings per fiber.

## Use cases
- find why a React component re-renders too often
- track component mounts and unmounts over time
- investigate which component causes another's update
- debug useMemo and useCallback recomputations
- analyze context usage and provider consumers
- profile React rendering performance in development

## When to choose
- you need to diagnose unintentional re-renders in a React 16.9+ app
- React DevTools isn't enough to trace update causes
- you want a component tree timeline including unmounted components

## When to avoid
- you need full component state inspection rather than state diffs
- you're profiling production builds, where some data isn't captured
- your app doesn't use React

## Facets
- artifact type: library
- maturity: active
- function: monitoring, developer-tools
- domain: frontend, web-development, performance, developer-tools
- platform: browser
- tags: react, devtools, performance-profiling, re-renders, fiber-tree, debugging, nodejs, web-server

## Member repositories
- lahmatiy/react-render-tracker (main) score 36

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:43.953078+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:34:11.523376+00:00, confidence not recorded.
  - readme: https://github.com/lahmatiy/react-render-tracker (fetched 2026-08-28T04:06:43.953078+00:00, sha 3ec1c9759741)
  - homepage: https://lahmatiy.github.io/react-render-tracker/ (fetched 2026-08-29T10:14:48.861705+00:00, sha 2ba93f8a2e6b)
  - registry_npm: https://registry.npmjs.org/react-render-tracker (fetched 2026-08-29T10:14:48.864684+00:00, sha be075ed32bf0)
- Data as of 2026-08-30T08:39:29.467469+00:00.