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🚇 The JavaScript bundler for React Native.

• 🚅 Fast: We aim for sub-second reload cycles, fast startup and quick bundling speeds.
• ⚖️ Scalable: Works with thousands of modules in a single application.
• ⚛️ Integrated: Supports every React Native project out of the box.

Metro is included with React Native — see theReact Native docs to quickly get started ⏱️.

To add Metro to an existing project, see ourGetting Started guide.

All available documentation, including onconfiguring Metro, can be found on theMetro website.

Source code for documentation is located in this repository underdocs/.

Metro was previously part of thereact-native repository. In this standalone repository it is easier for the team working on Metro to respond to issues and pull requests. Seereact-native#13976 for the initial announcement.

Meta has adopted a Code of Conduct that we expect project participants to adhere to. Please readthe full text so that you can understand what actions will and will not be tolerated.

Read ourcontributing guide to learn about our development process, how to propose bug fixes and improvements, and how to build and test your changes to Metro.

Larger discussions and proposals concerning React Native and Metro are discussed in@react-native-community/discussions-and-proposals.

Metro is MIT licensed, as found in the LICENSE file.