react-native 项目开发找不到模块 、重新安装某一模块后要清除缓存

Unable to resolve module ReactDefaultPerf from /Users/Eric/Projects/HRONE/node_modules/react-native/Libraries/react-native/react-native.js: Unable to find this module in its module map or any of the node_modules directories under /Users/node_modules/ReactDefaultPerf and its parent directories

This might be related to https://github.com/facebook/react-native/issues/4968

To resolve try the following:

  1. Clear watchman watches: `watchman watch-del-all`.

  2. Delete the `node_modules` folder: `rm -rf node_modules && npm install`.

  3. Reset packager cache: `rm -fr $TMPDIR/react-*` or `npm start -- --reset-cache`.