我试图创建新的项目，但这种情况发生，我更新的核心，因为他们在这里说How to update core-js to core-js@3 dependency?，但也没有什么帮助我，我使用windows 10，我该怎么办？
c:\Users\alothman\Desktop>npx react-native init travelApp
This will walk you through creating a new React Native project in c:\Users\alothman\Desktop\travelApp
Using yarn v1.21.1
Installing react-native...
yarn add v1.21.1
info No lockfile found.
[1/4] Resolving packages...
warning react-native > fbjs > core-js@2.6.11: core-js@<3 is no longer maintained and not recommended for usage due to the number of issues. Please, upgrade your dependencies to the actual version of core-js@3.
warning react-native > create-react-class > fbjs > core-js@1.2.7: core-js@<3 is no longer maintained and not recommended for usage due to the number of issues. Please, upgrade your dependencies to the actual version of core-js@3.
warning react-native > fbjs-scripts > core-js@2.6.11: core-js@<3 is no longer maintained and not recommended for usage due to the number of issues. Please, upgrade your dependencies to the actual version of core-js@3.
warning react-native > metro-babel-register > core-js@2.6.11: core-js@<3 is no longer maintained and not recommended for usage due to the number of issues. Please, upgrade your dependencies to the actual version of core-js@3.
[2/4] Fetching packages...
error An unexpected error occurred: "C:\\Users\\alothman\\AppData\\Local\\Yarn\\Cache\\v6\\npm-@babel-runtime-7.7.7-194769ca8d6d7790ec23605af9ee3e42a0aa79cf-integrity\\node_modules\\@babel\\runtime\\.yarn-metadata.json: Unexpected token \u0000 in JSON at position 0".
info If you think this is a bug, please open a bug report with the information provided in "c:\\Users\\alothman\\Desktop\\travelApp\\yarn-error.log".
info Visit https://yarnpkg.com/en/docs/cli/add for documentation about this command.
{ Error: Command failed: yarn add react-native --exact
at checkExecSyncError (child_process.js:629:11)
at execSync (child_process.js:666:13)
at run (C:\Users\alothman\AppData\Roaming\npm\node_modules\react-native-cli\index.js:294:5)
at createProject (C:\Users\alothman\AppData\Roaming\npm\node_modules\react-native-cli\index.js:249:3)
at init (C:\Users\alothman\AppData\Roaming\npm\node_modules\react-native-cli\index.js:200:5)
at Object.<anonymous> (C:\Users\alothman\AppData\Roaming\npm\node_modules\react-native-cli\index.js:153:7)
at Module._compile (internal/modules/cjs/loader.js:778:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
at Module.load (internal/modules/cjs/loader.js:653:32)
at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
status: 1,
signal: null,
output: [ null, null, null ],
pid: 5380,
stdout: null,
stderr: null }
Command `yarn add react-native --exact` failed.
8条答案
按热度按时间n3h0vuf21#
我认为您收到此错误的原因可能是您之前已全局安装了react-native-cli。因此，首先使用以下命令删除react-native-cli：
现在尝试创建项目：
e4eetjau2#
这对我很有效！
m0rkklqb3#
检查您使用的节点版本是否正确（〉= 12.13.0）：
node --version如果您使用的版本不正确，请使用nvm安装最新版本，然后切换到该版本。
https://heynode.com/tutorial/install-nodejs-locally-nvm/
dvtswwa34#
对我来说，问题是使用了旧版本的Node。我升级到Node V12，然后再次尝试安装，结果成功了。
nvm install 12nvm use 12然后
react-native init Projectzwghvu4y5#
您需要升级节点版本。
您可以安装〉10.0节点。
mm9b1k5b6#
如果您已在系统上安装了Node，请确保它是Node 14或更新版本。
vfh0ocws7#
您可以使用此命令解决此问题
mklgxw1f8#
尝试将节点版本升级到最新版本。