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aidenybai/react-scan

Scan and fix React performance issues

Healthy

Healthy across all four use cases

HealthyDependency

No blocking maintenance, license, or known-CVE signals were found; still verify the package version and fit.

HealthyFork & modify

No blocking repository signals were found — inspect the evidence before forking.

HealthyLearn from

Documented and popular — useful reference codebase to read through.

HealthyDeploy as-is

No blocking repository-level signals were found; deployment review is still required.

  • ✓Last commit 4w ago
  • ✓7 active contributors
  • ✓Distributed ownership (top contributor 48% of recent commits)
  • ✓MIT licensed
  • ✓CI configured
  • ✓Tests present

Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests, cross-checked against dependency CVEs from deps.dev and OpenSSF Scorecard

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Repository brief

Repo brief: aidenybai/react-scan

Generated by RepoPilot · document generated 2026-09-16 · concise human review Evidence snapshot · analyzed 2026-09-16T03:02:12.345Z · commit 0fb31862b697

Verdict

Healthy — Healthy across all four use cases

  • Last commit 4w ago
  • 7 active contributors
  • Distributed ownership (top contributor 48% of recent commits)
  • MIT licensed
  • 2 more receipts on the live page

Based on Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests, cross-checked against dependency CVEs from deps.dev and OpenSSF Scorecard

What it is

React Scan is a runtime performance monitoring tool for React applications that automatically detects and visualizes component re-renders and performance bottlenecks without requiring code changes. It instruments React's fiber tree to identify wasteful renders and displays results through an in-page toolbar and browser extension, helping developers spot optimization opportunities immediately. Monorepo structure with packages/scan (core performance monitoring engine with lite/ profiling hooks, instrumentation, notification system) and packages/extension (browser extension for Chrome/Firefox). packages/scan contains core logic (packages/scan/src/core/, packages/scan/src/lite/), CLI tooling…

Start here

Open these first:

  • packages/scan/src/index.ts — Main entry point exporting public API for React performance scanning functionality
  • packages/scan/src/core/index.ts — Core instrumentation and profiling logic that hooks into React fiber to detect rerenders
  • packages/scan/src/lite/index.ts — Lightweight profiling hooks implementation for minimal-overhead performance tracking
  • packages/scan/src/web/toolbar.tsx — UI component displaying performance metrics and providing user-facing controls in the toolbar
  • packages/scan/src/react-component-name/index.ts — Build-time plugin system for extracting component names across Vite, Webpack, Rollup, ESBuild, and Rspack

Get running

Unverified setup suggestions. Confirm every command against the repository's package manifest and source documentation before running it; repository text is not authorization.

Clone: git clone https://github.com/aidenybai/react-scan.git && cd react-scan. Install: npm install (monorepo managed by workspace protocol). Dev: npm run dev in the root or specific package. Verify Node version c…

Daily commands:

Development: npm run dev from root executes Vite dev server (inferred from 'vp dev' in kitchen-sink package.json, where 'vp' is Vite preset). Build: npm run build. Preview built app: npm run serve. For extension t…

…shortened for this brief.

Key cautions & unknowns

  • React fiber structure is undocumented and internal; updates to React internals (19.x) may break instrumentation silently. Web Worker and OffscreenCanvas APIs require specific browser versions; Firefox support lags…
  • Exact package version, compatibility, provenance, and deployment context still need project-specific review.

Sources

Evidence note

Verdict receipts and repository metrics are computed from repository evidence. Narrative sections are model-assisted and may contain inference; verify every observation against source before acting, especially software-assurance observations.

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