重复的模块名称：react-native。此错误是由hasteImpl为不同文件返回相同名称引起的。
我无法自行解决，需要帮助。
at setModule (C:\Users\abc\loginapp\node_modules\metro\node_modules\jest-haste-map\build\index.js:569:17)
at workerReply (C:\Users\abc\loginapp\node_modules\metro\node_modules\jest-haste-map\build\index.js:641:9)
at process._tickCallback (internal/process/next_tick.js:68:7)
(node:17804) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 3)