错误：找不到模块“react-native”/找不到模块：错误：无法解析模块“react-native-web”

Question

好的，我正在拼命地尝试安装一个 react-native-web 分支，该分支具有功能正常的 ListView 组件。 This branch，具体来说。

我将它安装到项目目录中，如下所示：npm install --save react@0.14 react-dom@0.14 https://github.com/IjzerenHein/react-native-web/tarball/feaure-listview2

直接从react-native-web安装好像没有这个问题。

这就是 index.web.js 的样子：

import React from 'react'

import {
AppRegistry,
Component,
...
} from 'react-native';

class App extends Component {
...
}

// App registration and rendering
AppRegistry.registerComponent('App', () => App);
AppRegistry.runApplication('App', { rootTag:     document.getElementById('react-root') });

这是控制台告诉我的（其中一部分，里面的文字太多了！）：

[Error] ./index.web.js
Module not found: Error: Cannot resolve module 'react-native-web' in /Users/michael/Code/spectrum-react-native
resolve module react-native-web in /Users/michael/Code/spectrum-react-native
  looking for modules in /Users/michael/Code/spectrum-react-native/node_modules
  resolve 'file' react-native-web in /Users/michael/Code/spectrum-react-native/node_modules
  resolve file
    /Users/michael/Code/spectrum-react-native/node_modules/react-native-web is not a file
    /Users/michael/Code/spectrum-react-native/node_modules/react-native-web.webpack.js doesn't exist
    /Users/michael/Code/spectrum-react-native/node_modules/react-native-web.web.js doesn't exist
    /Users/michael/Code/spectrum-react-native/node_modules/react-native-web.js doesn't exist
    /Users/michael/Code/spectrum-react-native/node_modules/react-native-web.json doesn't exist
resolve 'file' or 'directory' /Users/michael/Code/spectrum-react-native/node_modules/react-native-web
  resolve file
    /Users/michael/Code/spectrum-react-native/node_modules/react-native-web is not a file
    /Users/michael/Code/spectrum-react-native/node_modules/react-native-web.webpack.js doesn't exist
    /Users/michael/Code/spectrum-react-native/node_modules/react-native-web.web.js doesn't exist
    /Users/michael/Code/spectrum-react-native/node_modules/react-native-web.js doesn't exist
    /Users/michael/Code/spectrum-react-native/node_modules/react-native-web.json doesn't exist
  resolve directory
    directory default file index
      resolve file index in /Users/michael/Code/spectrum-react-native/node_modules/react-native-web
        /Users/michael/Code/spectrum-react-native/node_modules/react-native-web/index doesn't exist
        /Users/michael/Code/spectrum-react-native/node_modules/react-native-web/index.webpack.js doesn't exist
        /Users/michael/Code/spectrum-react-native/node_modules/react-native-web/index.web.js doesn't exist
        /Users/michael/Code/spectrum-react-native/node_modules/react-native-web/index.js doesn't exist
        /Users/michael/Code/spectrum-react-native/node_modules/react-native-web/index.json doesn't exist
    use dist/index.js from package.json
      resolve 'file' or 'directory' dist/index.js in /Users/michael/Code/spectrum-react-native/node_modules/react-native-web
        resolve file
          /Users/michael/Code/spectrum-react-native/node_modules/react-native-web/dist/index.js doesn't exist
          /Users/michael/Code/spectrum-react-native/node_modules/react-native-web/dist/index.js.webpack.js doesn't exist
          /Users/michael/Code/spectrum-react-native/node_modules/react-native-web/dist/index.js.web.js doesn't exist
          /Users/michael/Code/spectrum-react-native/node_modules/react-native-web/dist/index.js.js doesn't exist
          /Users/michael/Code/spectrum-react-native/node_modules/react-native-web/dist/index.js.json doesn't exist
        resolve directory
          /Users/michael/Code/spectrum-react-native/node_modules/react-native-web/dist/index.js doesn't exist (directory default file)
          /Users/michael/Code/spectrum-react-native/node_modules/react-native-web/dist/index.js/package.json doesn't exist (directory description file)
  ...

 @ ./index.web.js 9:19-42
errors (bundle.js:7934)
onmessage (bundle.js:7969)
dispatchEvent (bundle.js:2874)
(anonymous function) (bundle.js:4908)
forEach
_transportMessage (bundle.js:4906)
(anonymous function)
emit (bundle.js:847)
onmessage (bundle.js:6261)

Answer 1

问题是，他们有一个构建过程。这样，在 git 中会忽略已使用/预期的文件，但在 npm 导出中。

解决这个问题的最简单方法是克隆存储库，检查给定的分支，运行构建，并根据您是否有一个大型团队使用 npm link 链接本地存储库或从.gitignore 并将构建文件推送到分支。