metro.config.js

/**
 * Metro configuration for React Native
 * https://github.com/facebook/react-native
 *
 * @format
 */
const path = require('path')
const blacklist = require('metro-config/src/defaults/exclusionList')
const escape = require('escape-string-regexp')
const pak = require('../package.json')

const root = path.resolve(__dirname, '..')

const modules = Object.keys({
  ...pak.peerDependencies,
})

module.exports = {
  projectRoot: __dirname,
  watchFolders: [root],

  resolver: {
    blockList: blacklist([
      // This stops "react-native run-windows" from causing the metro server to crash if its already running
      new RegExp(`${path.resolve(__dirname, 'windows').replace(/[/\\]/g, '/')}.*`),
      // This prevents "react-native run-windows" from hitting: EBUSY: resource busy or locked, open msbuild.ProjectImports.zip
      /.*\.ProjectImports\.zip/,
    ]),
    blacklistRE: blacklist(
      modules.map((m) => new RegExp(`^${escape(path.join(root, 'node_modules', m))}\\/.*$`)),
    ),
    extraNodeModules: modules.reduce((acc, name) => {
      acc[name] = path.join(__dirname, 'node_modules', name)
      return acc
    }, {}),
  },
  transformer: {
    getTransformOptions: async () => ({
      transform: {
        experimentalImportSupport: false,
        inlineRequires: true,
      },
    }),
  },
}