安装 react native 的问题

Question

我正在尝试在 Windows 10 上安装 React Native。我的节点版本是：12.9.1

问题是当我执行这个命令时：

npm install -g expo-cli

它开始安装该应用程序，但在即将完成时，它会引发此错误：

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: @expo/traveling-fastlane-darwin@1.11.0 (node_modules\expo-cli\node_modules\@expo\traveling-fastlane-darwin):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for @expo/traveling-fastlane-darwin@1.11.0: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.9 (node_modules\expo-cli\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.9: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: @expo/ngrok-bin-win32-ia32@2.2.8-beta.1 (node_modules\expo-cli\node_modules\@expo\ngrok-bin-win32-ia32):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for @expo/ngrok-bin-win32-ia32@2.2.8-beta.1: wanted {"os":"win32","arch":"ia32"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: @expo/ngrok-bin-sunos-x64@2.2.8 (node_modules\expo-cli\node_modules\@expo\ngrok-bin-sunos-x64):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for @expo/ngrok-bin-sunos-x64@2.2.8: wanted {"os":"sunos","arch":"x64"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: @expo/ngrok-bin-linux-x64@2.2.8 (node_modules\expo-cli\node_modules\@expo\ngrok-bin-linux-x64):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for @expo/ngrok-bin-linux-x64@2.2.8: wanted {"os":"linux","arch":"x64"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: @expo/ngrok-bin-linux-ia32@2.2.8 (node_modules\expo-cli\node_modules\@expo\ngrok-bin-linux-ia32):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for @expo/ngrok-bin-linux-ia32@2.2.8: wanted {"os":"linux","arch":"ia32"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: @expo/ngrok-bin-linux-arm64@2.2.8 (node_modules\expo-cli\node_modules\@expo\ngrok-bin-linux-arm64):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for @expo/ngrok-bin-linux-arm64@2.2.8: wanted {"os":"linux","arch":"arm64"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: @expo/ngrok-bin-linux-arm@2.2.8 (node_modules\expo-cli\node_modules\@expo\ngrok-bin-linux-arm):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for @expo/ngrok-bin-linux-arm@2.2.8: wanted {"os":"linux","arch":"arm"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: @expo/ngrok-bin-freebsd-x64@2.2.8 (node_modules\expo-cli\node_modules\@expo\ngrok-bin-freebsd-x64):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for @expo/ngrok-bin-freebsd-x64@2.2.8: wanted {"os":"freebsd","arch":"x64"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: @expo/ngrok-bin-freebsd-ia32@2.2.8 (node_modules\expo-cli\node_modules\@expo\ngrok-bin-freebsd-ia32):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for @expo/ngrok-bin-freebsd-ia32@2.2.8: wanted {"os":"freebsd","arch":"ia32"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: @expo/ngrok-bin-darwin-x64@2.2.8 (node_modules\expo-cli\node_modules\@expo\ngrok-bin-darwin-x64):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for @expo/ngrok-bin-darwin-x64@2.2.8: wanted {"os":"darwin","arch":"x64"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: @expo/ngrok-bin-darwin-ia32@2.2.8 (node_modules\expo-cli\node_modules\@expo\ngrok-bin-darwin-ia32):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for @expo/ngrok-bin-darwin-ia32@2.2.8: wanted {"os":"darwin","arch":"ia32"} (current: {"os":"win32","arch":"x64"})

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! envsub@3.1.0 postinstall: `test -d .git && cp gitHookPrePush.sh .git/hooks/pre-push || true`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the envsub@3.1.0 postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

为什么会发生？

谢谢！

Answer 1

_uninstall 你已经安装的所有 expo react-native 和 node

_安装节点@V10.xx

_install react-native 或 expo 并享受

在大多数情况下，版本 12 上的 nodejs 会导致 react-native 出现很多错误，最稳定的版本是 10.xx

试试这个，让我明白你的问题已经解决了。

Answer 2

最新版本的 expo-cli 中存在一个错误。 postinstall 脚本使用 Windows powershell / cmd 不支持的命令。 您可以回滚到早期版本，或者现在您可以从支持命令的 Git Bash 安装它。 见： https : //github.com/expo/expo-cli/issues/1284

Answer 3

如果您将运行命令npm install -g expo-cli它将尝试安装最新版本的 expo CLI。 世博团队内部有很多错误。 一世

尝试安装 expo CLI 3.7.1 版，我认为这是 expo CLI 的最新稳定版本。

npm install --global expo-cli@3.7.1

持续检查稳定的 expo CLI 版本更新并继续尝试稳定版本。

我希望它有帮助。