react/metro
Some data may be outdated — see provenance labels.
🚇 The JavaScript bundler for React Native observed · 2026-09-26
Health v2 · maintenance only
96/100
- Activity 96
- Release rhythm 95
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.
- gap_med: 10.5
- age_days: 3597
- days_rel: 37
- days_push: 25
- n_releases_24m: 31
Adoption not part of the score
5641 stars · 698 forks observed · 2026-09-26
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Metro is the JavaScript bundler for React Native, providing fast bundling, a transformer pipeline, and a development server with hot reloading. It ships with React Native by default and can also be used standalone via its CLI or programmatic API.
Use cases
- bundle javascript for react native apps
- run a dev server with fast refresh for react native
- build a production js bundle with source maps
- integrate a bundler middleware into an express server
- customize module resolution and transformation for react native
- serve bundles for thousands of modules in a large app
When to choose
- you are building or tooling a React Native application
- you need fast incremental bundling and hot reload for mobile JS
- you want a programmable bundler with resolver/transformer/serializer hooks
When to avoid
- you are bundling a plain web app where webpack, esbuild, or Vite fit better
- you need a general-purpose bundler outside the React Native ecosystem
- your project does not use Node.js-based tooling
Facets
cli-tool · maturity active
build-tool http-server middleware cli developer-tools mobile-development frontend developer-tools web-development cli cross-platform bundler react-native javascript-bundler module-bundler hot-reload dev-server source-maps transformer-pipeline javascript nodejs
5 sources
- readme: https://github.com/react/metro · fetched 2026-09-26 · 07310f74e2d5
- homepage: https://metrobundler.dev · fetched 2026-08-29 · b4b82262f455
- site_page: https://metrobundler.dev/docs/getting-started · fetched 2026-08-29 · ee890284b776
- site_page: https://metrobundler.dev/docs/api · fetched 2026-08-29 · cfa994b7a934
- site_page: https://metrobundler.dev/docs/configuration · fetched 2026-08-29 · 114e72e6849b
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| react/metro | main | 96 |
For agents
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem