为什么create-react-app创建项目和yarn start有错误“无法读取未定义的属性'indexOf'”？

Question

我正在使用create-react-app创建项目，并在弹出纱线后，更改webpack.config.js的“ entry”属性，并更改路径“ module.exports = {}”，当我开始纱线时，我得到了错误“无法读取未定义的属性'indexOf'”。我不知道哪里是错误。

env：macos 14 节点：v10.13.0 npm：v6.11.3 纱：1.15.2 反应：v16.9.0

webpack.config.js：

entry: {
      index: [
        paths.appIndexJs, 
        isEnvDevelopment && require.resolve('react-dev-utils/webpackHotDevClient')
      ].filter(Boolean),
      query: [
        paths.appQueryJs, 
        isEnvDevelopment && require.resolve('react-dev-utils/webpackHotDevClient')
      ].filter(Boolean),
      order: [
        paths.appOrderJs, 
        isEnvDevelopment && require.resolve('react-dev-utils/webpackHotDevClient')
      ].filter(Boolean),
      ticketPage: [
        paths.appTicketPageJs, 
        isEnvDevelopment && require.resolve('react-dev-utils/webpackHotDevClient')
      ].filter(Boolean)
    },

paths.js

module.exports = {
  dotenv: resolveApp('.env'),
  appPath: resolveApp('.'),
  appBuild: resolveApp('build'),
  appPublic: resolveApp('public'),
  appHtml: resolveApp('public/index.html'),

  // this is new
  appQueryHtml: resolveApp('public/query.html'),  
  appOrderHtml: resolveApp('public/order.html'),  
  appticketPageHtml: resolveApp('public/ticketPage.html'),
  appIndexJs: resolveModule(resolveApp, 'src/index/index'),
  appQueryJs: resolveModule(resolveApp, 'src/query/index'),
  appTicketPageJs: resolveModule(resolveApp, 'src/ticketPage/index'),
  appOrderJs: resolveModule(resolveApp, 'src/order/index'),
  // new over

  appPackageJson: resolveApp('package.json'),
  appSrc: resolveApp('src'),
  appTsConfig: resolveApp('tsconfig.json'),
  appJsConfig: resolveApp('jsconfig.json'),
  yarnLockFile: resolveApp('yarn.lock'),
  testsSetup: resolveModule(resolveApp, 'src/setupTests'),
  proxySetup: resolveApp('src/setupProxy.js'),
  appNodeModules: resolveApp('node_modules'),
  publicUrl: getPublicUrl(resolveApp('package.json')),
  servedPath: getServedPath(resolveApp('package.json')),
};

我希望运行“ yarn start”，反应项目正常！

项目文件夹：

_{（来源：labike.xyz）}

错误：

_{（来源：labike.xyz）}

Answer 1

我在path.js中发现了错误：

module.exports = {
    ...
    appTicketPage: ...
}

我写错了！