Frontend Frameworks

Metro Config

Metro config for React Native projects with Expo

What it is

A Metro configuration package specifically tailored to run React Native projects using the Metro bundler, optimized for use with Expo.

Provides a specialized Metro bundler configuration that simplifies setup and enhances performance for React Native projects using Expo.

When it fits — and when it doesn’t

A good fit for

React Native developers who are using Expo and need a streamlined setup with Metro bundler
Projects that require specific configurations for the Metro bundler to optimize build times and performance

Look elsewhere if

Projects not utilizing React Native or Expo, as this tool is specifically tailored for these ecosystems
Developers looking for a cloud-based service rather than a local configuration tool

Each one links to the public issue, changelog or docs page it came from, where we have one.

01
Limited flexibility outside Expo environment
@expo/metro-config is tightly integrated with Expo, making it less suitable for React Native projects not using Expo.
02
Documentation lacks depth and examples
The official documentation provides basic usage instructions but lacks comprehensive guides or advanced use cases.
03
Performance issues with large codebases
Metro bundler can become slow and resource-intensive when handling very large projects, impacting development efficiency.
04
Dependency on Expo's ecosystem
Using @expo/metro-config means a significant reliance on Expo’s ecosystem which could lead to vendor lock-in and limited flexibility for future changes or migrations.

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

Setup steps, common gotchas and what to check after 30 days.