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metro-react-native-babel-preset

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metro-react-native-babel-preset

Babel preset for React Native applications


Version published
Weekly downloads
1.9M
increased by3.52%
Maintainers
2
Weekly downloads
 
Created

What is metro-react-native-babel-preset?

The metro-react-native-babel-preset package is a Babel preset for React Native applications. It includes the Babel plugins and configurations necessary to compile JavaScript code in a way that is compatible with the React Native platform. This preset helps developers by abstracting the complex Babel configurations required for React Native development.

What are metro-react-native-babel-preset's main functionalities?

Transform JSX

This code sample demonstrates how JSX is transformed into JavaScript that React Native can understand. The metro-react-native-babel-preset handles the necessary transformations behind the scenes.

import React from 'react';
import { View, Text } from 'react-native';

function MyComponent() {
  return (
    <View>
      <Text>Hello, world!</Text>
    </View>
  );
}

ESNext Features

This code sample shows the use of class properties, an ESNext feature. The preset allows developers to write modern JavaScript by transpiling features that are not natively supported by the React Native JavaScript engine.

class MyComponent extends React.Component {
  state = { greeting: 'Hello' };

  render() {
    return <Text>{this.state.greeting}, world!</Text>;
  }
}

Module Resolution

This code sample illustrates module resolution. The preset configures Babel to resolve modules in a way that is compatible with the Metro bundler used by React Native.

import myModule from 'my-module';

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Package last updated on 06 Jul 2023

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