resolve:{...,alias: {// Support React Native Web// https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/// 'react-native': 'react-native-web',// Allows for better profiling with ReactDevTools// ...(isEnvProductionProfile && {//   'react-dom$': 'react-dom/profiling',//   'scheduler/tracing': 'scheduler/tracing-profiling',// }),// ...(modules.webpackAliases || {}),'react': path.resolve(__dirname, '../src/react/packages/react'),'react-dom': path.resolve(__dirname, '../src/react/packages/react-dom'),'legacy-events': path.resolve(__dirname, '../src/react/packages/legacy-events'),'shared': path.resolve(__dirname, '../src/react/packages/shared'),'react-reconciler': path.resolve(__dirname, '../src/react/packages/react-reconciler'),},}

npm install @babel/plugin-transform-flow-strip-types -D

   //在webpack.config.js的babel-loader中添加配置{test: /.(js|mjs|jsx|ts|tsx)$/,include: paths.appSrc,loader: require.resolve('babel-loader'),options: {customize: require.resolve('babel-preset-react-app/webpack-overrides'),plugins: [...,[require.resolve('@babel/plugin-transform-flow-strip-types')]// 配置忽略flow类型检测],...}

//添加以下代码
export * from './forks/ReactFiberHostConfig.dom';

  const stringified = {'process.env': Object.keys(raw).reduce((env, key) => {env[key] = JSON.stringify(raw[key]);return env;}, {}),"__DEV__": true,"__PROFILE__": true,"__UMD__": true};

// react此时未export内容，直接从ReactSharedInternals拿值
// import React from 'react';
// 此时React为undefined
// const ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;
​
import ReactSharedInternals from '../react/src/ReactSharedInternals';

export default function invariant(condition, format, a, b, c, d, e, f) {if(condition) return ;throw new Error('Internal React error: invariant() is meant to be replaced at compile ' +'time. There is no runtime version.',);
}
​

'use strict';
​
const React = require('./src/React');
console.log('源码测试',React)
// TODO: decide on the top-level export form.
// This is hacky but makes it work with both Rollup and Jest.
module.exports = React.default || React;