mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Alex Hunt
39a41fa2a0
Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/38961 Changelog: [Internal] Reviewed By: motiz88 Differential Revision: D48066180 fbshipit-source-id: 72b8b25a70062a71ab13aa1d62f3418582e99013
45 lines
1.4 KiB
JavaScript
45 lines
1.4 KiB
JavaScript
/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @flow strict-local
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* @format
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* @oncall react_native
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*/
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import type {CustomResolver} from 'metro-resolver';
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/**
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* This is an implementation of a metro resolveRequest option which will remap react-native imports
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* to different npm packages based on the platform requested. This allows a single metro instance/config
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* to produce bundles for multiple out of tree platforms at a time.
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*
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* @param platformImplementations
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* A map of platform to npm package that implements that platform
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*
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* Ex:
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* {
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* windows: 'react-native-windows'
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* macos: 'react-native-macos'
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* }
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*/
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export function reactNativePlatformResolver(platformImplementations: {
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[platform: string]: string,
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}): CustomResolver {
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return (context, moduleName, platform) => {
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let modifiedModuleName = moduleName;
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if (platform != null && platformImplementations[platform]) {
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if (moduleName === 'react-native') {
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modifiedModuleName = platformImplementations[platform];
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} else if (moduleName.startsWith('react-native/')) {
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modifiedModuleName = `${
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platformImplementations[platform]
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}/${modifiedModuleName.slice('react-native/'.length)}`;
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}
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}
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return context.resolveRequest(context, modifiedModuleName, platform);
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};
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}
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