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[英]React-Native error: cannot find module 'metro-react-native-babel-preset'
[英]error: bundling failed: Error: Couldn't find preset “module:metro-react-native-babel-preset” relative to directory “C:\\Users\\…”
我是本机反应的新手。 我跑步时一直收到此错误
react-native run-android
这是我的最后一个package.json,在我上次推送更改时可以正常使用,但是现在好像坏了。
我的package.json
{
"name": "taxiapp",
"version": "0.0.1",
"private": true,
"scripts": {
"start": "node node_modules/react-native/local-cli/cli.js start",
"test": "jest"
},
"dependencies": {
"@babel/runtime": "^7.0.0",
"native-base": "^2.8.0",
"react": "16.5.0",
"react-addons-update": "^15.6.2",
"react-native": "^0.54.1",
"react-native-maps": "^0.21.0",
"react-native-router-flux": "^4.0.5",
"react-redux": "^5.0.7",
"redux": "^4.0.0",
"redux-thunk": "^2.3.0"
},
"devDependencies": {
"babel-jest": "23.6.0",
"jest": "23.6.0",
"metro-react-native-babel-preset": "^0.48.1",
"react-test-renderer": "16.5.0",
"redux-logger": "^3.0.6"
},
"jest": {
"preset": "react-native"
}
}
尝试运行:
del %appdata%\\Temp\\react-* & del %appdata%\\Temp\\metro-* & del %appdata%\\Temp\\haste-* & watchman watch-del-all & npm start -- --reset-cache
如果仍然无法使用,您可以在此处尝试2种解决方案:
将本机升级到0.57.2
或降级babel,据我所知RN 0.54使用babel 6而不是7。
这是适用于RN 0.57的配置:
请尝试将以下转换规则添加到package.json中:
"jest": {
"preset": "react-native",
"transform": {
"^.+\\.js$": "<rootDir>/node_modules/react-native/jest/preprocessor.js"
},
"transformIgnorePatterns": [
"node_modules/(?!(jest-)?react-native)"
]
},
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