react-native - 我在运行npm start时收到无效的正则表达式错误

Question

我最近安装了这个博览会。我已经使用expo init创建了一个项目。
创建后，当我运行npm start时，我遇到以下错误，请解决我的问题

> @ start C:\Users\ujwal\Desktop\Java\my-new-project
> expo start

Starting project at C:\Users\ujwal\Desktop\Java\my-new-project
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.

Metro Bundler process exited with code 1
Set EXPO_DEBUG=true in your env to view the stack trace.
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! @ start: `expo start`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the @ start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\ujwal\AppData\Roaming\npm-cache\_logs\2019-10-07T11_19_27_567Z-debug.log

Answer 1

您必须对此文件{project_root}\node_modules\metro-config\src\defaults\blacklist.js进行更改

有一个无效的正则表达式需要更改。我将sharedBlacklist下的第一个表达式更改为:

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

至

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

希望对您有帮助...