Question

我有一个app（node_modules dir的结构从这个列表中排除）：

├── actions.js
├── bundle.js
├── components
│   ├── App.js
│   ├── Footer.js
│   ├── Link.js
│   ├── Todo.js
│   └── TodoList.js
├── Containers
│   ├── AddTodo.js
│   ├── FilterLink.js
│   └── VisibleTodoList.js
├── index.html
├── index.js
├── main.js
├── package.json
├── package-lock.json
├── reducers.js
└── webpack.config.js

我的webpack配置如下所示：

module.exports = {
    entry: "./main.js",
    output: {
        path: __dirname,
        filename: "bundle.js"
    },
    module: {
        loaders: [
          {
            test: /\.js$/,
            loader: 'babel-loader',
            query: {
              presets: ['es2015', 'react']
            }
          }
        ]
    }
};

npm config：

{
  "name": "webpack-redux",
  "version": "1.0.0",
  "description": "",
  "main": "main.js",
  "scripts": {
    "test": "nothing"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "babel": "^6.23.0",
    "babel-core": "^6.26.0",
    "babel-loader": "^7.1.2",
    "babel-preset-env": "^1.6.0",
    "babel-preset-es2015": "^6.24.1",
    "webpack": "^3.5.5"
  },
  "dependencies": {
    "react": "^15.6.1",
    "babel-preset-react": "^6.24.1",
    "react-dom": "^15.6.1",
    "react-redux": "^5.0.6",
    "redux": "^3.7.2"
  }
}

当我运行webpack命令时，我收到此错误：

ERROR in ./components/App.js
Module not found: Error: Can't resolve '../containers/AddTodo' in '/home/oerp/js-programs/redux-test/components'
 @ ./components/App.js 11:15-47
 @ ./index.js
 @ ./main.js

ERROR in ./components/Footer.js
Module not found: Error: Can't resolve '../containers/FilterLink' in '/home/oerp/js-programs/redux-test/components'
 @ ./components/Footer.js 11:18-53
 @ ./components/App.js
 @ ./index.js
 @ ./main.js

ERROR in ./components/App.js
Module not found: Error: Can't resolve '../containers/VisibleTodoList' in '/home/oerp/js-programs/redux-test/components'
 @ ./components/App.js 15:23-63
 @ ./index.js
 @ ./main.js

我的components/App.js内容是：

import Footer from './Footer'
import AddTodo from '../containers/AddTodo'
import VisibleTodoList from '../containers/VisibleTodoList'

const App = () => (
  <div>
    <AddTodo />
    <VisibleTodoList />
    <Footer />
  </div>
)

export default App

例如containers/AddTodo.js：

import { connect } from 'react-redux'
import { addTodo } from '../actions'

let AddTodo = ({ dispatch }) => {
  let input

  return (
    <div>
      <form
        onSubmit={e => {
          e.preventDefault()
          if (!input.value.trim()) {
            return
          }
          dispatch(addTodo(input.value))
          input.value = ''
        }}
      >
        <input
          ref={node => {
            input = node
          }}
        />
        <button type="submit">
          Add Todo
        </button>
      </form>
    </div>
  )
}
AddTodo = connect()(AddTodo)

export default AddTodo

似乎它不理解双点的相对路径，如../something？

我是否需要以某种方式配置webpack才能理解这些路径？

Answer 1

您的文件结构表明文件夹名称为Container，大写为C.但您尝试使用小写c container导入它。您需要更改其中一个，因为路径区分大小写。

Answer 2

我在使用 typescript 时遇到了这个问题，但忘记在 ts 条目中添加 tsx 和 resolve 后缀。

module.exports = {
  ...
  resolve: {
    extensions: ['.js', '.jsx', '.ts', '.tsx'],
  },
};

这对我有用

Answer 3

只需将其添加到您的配置中即可。来源：https://www.jumoel.com/2017/zero-to-webpack.html

externals: [ nodeExternals() ]

Answer 4

如果你有一个打字稿文件，你必须通过在 webpack.config.js 中使用下面的代码来指示 webpack 解析它们

module.exports={
   ...
   resolve:{
      extensions:['.ts','.tsx';]
   }
}

Answer 5

找不到模块的相同问题。事实证明我有一个组件 import Picture from './Picture/Picture';位于所有进口的最底层。当我将它移到import React, { Component } from 'react';以下时，它就有效了。

Answer 6

例如，在导入库时使用文件的确切路径：

import Footer from './Footer/index.jsx'
import AddTodo from '../containers/AddTodo/index.jsx'
import VisibleTodoList from '../containers/VisibleTodoList/index.jsx'

希望这会有所帮助

Answer 7

查看路径，例如此导入不正确 从“ @ / components / Navbar.vue”导入导航栏 应该看起来像这样 **从'./components/Navbar.vue'导入Navbar **

Answer 8

就遇到了这个问题...我有一个在多个转译产品之间共享的公共库。我使用带有早午餐的符号链接来处理项目之间的共享。移至webpack时，此操作停止工作。

使用webpack配置关闭符号链接解析确实可以使工作正常进行。

即在webpack.config.js中添加它：

module.exports = {
  //...
  resolve: {
    symlinks: false
  }
};

如此处所述：

https://webpack.js.org/configuration/resolve/#resolvesymlinks

Answer 9

我有一个不同的问题。我的一些包含项设置为“ app / src / xxx / yyy”，而不是“ ../ xxx / yyy”

Answer 10

如果您使用多个node_modules（纱线工作区等），请告诉webpack它们在哪里：

  externals: [nodeExternals({
    modulesDir: path.resolve(__dirname, '../node_modules'),
  }),  nodeExternals()],

Answer 11

将 private static int findFreePort() { int port = 0; // For ServerSocket port number 0 means that the port number is automatically allocated. try (ServerSocket socket = new ServerSocket(0)) { // Disable timeout and reuse address after closing the socket. socket.setReuseAddress(true); port = socket.getLocalPort(); } catch (IOException ignored) {} if (port > 0) { return port; } throw new RuntimeException("Could not find a free port"); } 更改为 templateUrl: '' 已修复

webpack：找不到模块：错误：无法解析（使用相对路径）

11 个答案: