React Native 在 build iOS 的时候如果出现关于 metro 的错误, 例如:

Command PhaseScriptExecution failed with a nonzero exit code

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/xxxxxxxxxxxxxxxxx/node_modules/metro/src/node-haste/DependencyGraph/ModuleResolution.js:139

        throw new UnableToResolveError(

              ^

解决方案, 修改 metro.config.js 如下:

const {getDefaultConfig, mergeConfig} = require('@react-native/metro-config');

const defaultConfig = getDefaultConfig(__dirname);

const {
  resolver: {sourceExts, assetExts},
} = getDefaultConfig(__dirname);

const config = {
  transformer: {
    getTransformOptions: async () => ({
      transform: {
        experimentalImportSupport: false,
        inlineRequires: true,
      },
    }),
    babelTransformerPath: require.resolve('react-native-svg-transformer'),
  },
  resolver: {
    assetExts: assetExts.filter(ext => ext !== 'svg'),
    sourceExts: [...sourceExts, 'svg'],
  },
};

module.exports = mergeConfig(defaultConfig, config);