的WebPack：模块未找到：错误：无法解析（使用相对路径）

Question

我有一个应用程序的这种结构（从这个列表中排除node_modules DIR）：

├── 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的配置是这样的：

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

NPM配置：

{ 
    "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，我得到这个错误：

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components/App.js内容是这样的：

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

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

export default App 

而且例如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 

似乎不明白相对路径用双点，像../something？

我需要配置webpack以某种方式来理解这些路径吗？

Answer 1

您的文件结构显示文件夹名称为Container，大写字母为C.但您试图用小写字母c将其导入container。由于路径区分大小写，因此您需要更改一个或另一个。