运行 expo start 命令后出现无效的正则表达式错误

Question

我是 React 原生开发的新手。在运行之后：

expo start

或

npm start

或

yarn start

它returns以下错误信息：

Invalid regular expression error

我该如何调试？

PS C:\Users\Admin\Desktop\React Course\New folder (2)\newproject> expo start
Starting project at C:\Users\Admin\Desktop\React Course\New folder (2)\newproject
Expo DevTools is running at http://localhost:19002
Opening DevTools in the browser... (press shift-d to disable)
error Invalid regular expression: /(.*\__fixtures__\.*|node_modules[\\]react[\\]dist[\\].*|website\node_modules\.*|heapCapture\bundle\.js|.*\__tests__\.*)$/: Unterminated character class. Run CLI with --verbose flag for more details.

SyntaxError: Invalid regular expression: /(.*\__fixtures__\.*|node_modules[\\]react[\\]dist[\\].*|website\node_modules\.*|heapCapture\bundle\.js|.*\__tests__\.*)$/: Unterminated character class
    at new RegExp ()
    at blacklist (C:\Users\Admin\Desktop\React Course\New folder (2)\newproject\node_modules\metro-config\src\defaults\blacklist.js:34:10)
    at getBlacklistRE (C:\Users\Admin\Desktop\React Course\New folder (2)\newproject\node_modules\@react-native-community\cli\build\tools\loadMetroConfig.js:66:59)
    at getDefaultConfig (C:\Users\Admin\Desktop\React Course\New folder (2)\newproject\node_modules\@react-native-community\cli\build\tools\loadMetroConfig.js:82:20)
    at load (C:\Users\Admin\Desktop\React Course\New folder (2)\newproject\node_modules\@react-native-community\cli\build\tools\loadMetroConfig.js:118:25)
    at Object.runServer [as func] (C:\Users\Admin\Desktop\React Course\New folder (2)\newproject\node_modules\@react-native-community\cli\build\commands\server\runServer.js:82:58)
    at Command.handleAction (C:\Users\Admin\Desktop\React Course\New folder (2)\newproject\node_modules\@react-native-community\cli\build\index.js:164:23)
    at Command.listener (C:\Users\Admin\Desktop\React Course\New folder (2)\newproject\node_modules\commander\index.js:315:8)
    at Command.emit (events.js:210:5)
    at Command.parseArgs (C:\Users\Admin\Desktop\React Course\New folder (2)\newproject\node_modules\commander\index.js:651:12)
Metro Bundler process exited with code 1
Set EXPO_DEBUG=true in your env to view the stack trace.

Answer 1

要解决此问题，请转至

\node_modules\metro-config\src\defaults\blacklist.js

改变

var sharedBlacklist = [
  /node_modules[/\]react[/\]dist[/\].*/,
  /website\/node_modules\/.*/,
  /heapCapture\/bundle\.js/,
  /.*\/__tests__\/.*/
];

到

var sharedBlacklist = [
  /node_modules[\/\]react[\/\]dist[\/\].*/,
  /website\/node_modules\/.*/,
  /heapCapture\/bundle\.js/,
  /.*\/__tests__\/.*/
];

Check this了解更多信息。

Answer 2

对于找不到 \metro-config 的任何人，我在

下找到了文件

node_modules\metro\src\blacklist.js

并进行了与上面所列相同的更改：

/node_modules[/\]react[/\]dist[/\].*/,

至

/node_modules[\/\]react[\/\]dist[\/\].*/,

运行 expo start 命令后出现无效的正则表达式错误

Invalid Regular Expression error after running expo start command

npm

react-native

yarnpkg

expo