node.js - react native Node 依赖项安装破坏了项目

Question

我正在尝试使用 react-native 开发我的第一个 Android 应用程序和 expo用于测试，在 Windows 8.1 上。

根据教程，我有一个使用 react-native 的工作项目组件，但当我安装依赖项时一切都崩溃了

`npm install --save react-navigation`:  

npm-start 返回

Error: React native is not installed. Please run 'npm install' in your project directory.

所以我按照建议再次运行npm-install。
这导致 npm-start 询问我是否要安装 expo-cli在全局范围内，无论我回答"is"还是“否”，我都会收到以下错误:

Installing the package [expo-cli][1]...
events.js:167
      throw er; // Unhandled 'error' event
      ^

Error: spawn npm ENOENT
    at Process.ChildProcess._handle.onexit (internal/child_process.js:232:19)
    at onErrorNT (internal/child_process.js:407:16)
    at process._tickCallback (internal/process/next_tick.js:63:19)
Emitted 'error' event at:
    at Process.ChildProcess._handle.onexit (internal/child_process.js:238:12)
    at onErrorNT (internal/child_process.js:407:16)
    at process._tickCallback (internal/process/next_tick.js:63:19)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! empty-project-template@ start: `expo start`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the empty-project-template@ start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\me\AppData\Roaming\npm-cache\_logs\2018-09-25T21_27_21_053Z-debug.log

该消息中提到的日志如下:

0 info it worked if it ends with ok
1 verbose cli [ 'C:\\Program Files\\nodejs\\node.exe',
1 verbose cli   'C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli   'start' ]
2 info using npm@6.4.1
3 info using node@v10.11.0
4 verbose run-script [ 'prestart', 'start', 'poststart' ]
5 info lifecycle empty-project-template@~prestart: empty-project-template@
6 info lifecycle empty-project-template@~start: empty-project-template@
7 verbose lifecycle empty-project-template@~start: unsafe-perm in lifecycle true
8 verbose lifecycle empty-project-template@~start: PATH: C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\node-gyp-bin;D:\androidProjects\MoviesAndMe\node_modules\.bin;C:\Python27\;C:\Python27\Scripts;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\bin;C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\libnvvp;C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v9.1\bin;C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v9.1\libnvvp;C:\ProgramData\Anaconda3;C:\ProgramData\Anaconda3\Library\mingw-w64\bin;C:\ProgramData\Anaconda3\Library\usr\bin;C:\ProgramData\Anaconda3\Library\bin;C:\ProgramData\Anaconda3\Scripts;C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Java\jre7\bin;C:\Program Files (x86)\QuickTime\QTSystem\;C:\Program Files (x86)\Skype\Phone\;C:\Android;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files (x86)\GtkSharp\2.12\bin;C:\ProgramData\chocolatey\bin;C:\Program Files\nodejs\;C:\Users\me\Documents\Latex\miktex\bin\;C:\Users\me\AppData\Local\atom\bin;C:\Users\me\AppData\Local\hyper\app-2.0.0\resources\bin;C:\Program Files\Java\jdk1.8.0_181\bin;C:\Users\me\AppData\Roaming\npm
9 verbose lifecycle empty-project-template@~start: CWD: D:\androidProjects\MoviesAndMe
10 silly lifecycle empty-project-template@~start: Args: [ '/d /s /c', 'expo start' ]
11 silly lifecycle empty-project-template@~start: Returned: code: 1  signal: null
12 info lifecycle empty-project-template@~start: Failed to exec start script
13 verbose stack Error: empty-project-template@ start: `expo start`
13 verbose stack Exit status 1
13 verbose stack     at EventEmitter.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\index.js:301:16)
13 verbose stack     at EventEmitter.emit (events.js:182:13)
13 verbose stack     at ChildProcess.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\lib\spawn.js:55:14)
13 verbose stack     at ChildProcess.emit (events.js:182:13)
13 verbose stack     at maybeClose (internal/child_process.js:962:16)
13 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:251:5)
14 verbose pkgid empty-project-template@
15 verbose cwd D:\androidProjects\MoviesAndMe
16 verbose Windows_NT 6.3.9600
17 verbose argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "start"
18 verbose node v10.11.0
19 verbose npm  v6.4.1
20 error code ELIFECYCLE
21 error errno 1
22 error empty-project-template@ start: `expo start`
22 error Exit status 1
23 error Failed at the empty-project-template@ start script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]

我在 StackOverflow 上进行了搜索，并按照建议处理 this answer 中发现的 ELIFECYCLE 错误。 。运行 npm cache clean 然后删除 node_modules 目录和 package-lock.json 但错误是相同的。
我什至尝试执行这些步骤，并在再次运行 npm-install 之前从 package.json 文件和代码中的依赖项中删除 react-navigation，但它没有改变任何内容。

值得注意的是，当单独运行 expo start 时，它会设法在浏览器中启动 bundler 和开发工具，只是没有使用正确的 IP 地址。

我也不知道这是否重要，但在运行 npm-install 时，我遇到了 2 个漏洞，当我运行 npm-audit 时，它表明 lodash 包中存在低“原型(prototype)污染”漏洞，而 ws 包中存在高“拒绝服务”漏洞。但即使运行npmauditfix后也没有任何变化

无论如何，我希望你能帮助我，谢谢!

Answer 1

我也遇到了同样的问题。

如果你运行:

npm i expo-cli

然后

npm start

它会起作用