字段“browser”不包含有效的别名配置

我已经开始使用webpack2(准确地说，v2.3.2)，在重新创建我的配置后，我一直遇到一个问题，我似乎无法解决我得到(提前为丑陋的转储道歉):

ERROR in ./src/main.js
Module not found: Error: Can't resolve 'components/DoISuportIt' in '[absolute path to my repo]/src'
resolve 'components/DoISuportIt' in '[absolute path to my repo]/src'
  Parsed request is a module
  using description file: [absolute path to my repo]/package.json (relative path: ./src)
    Field 'browser' doesn't contain a valid alias configuration
    aliased with mapping 'components': '[absolute path to my repo]/src/components' to '[absolute path to my repo]/src/components/DoISuportIt'
      using description file: [absolute path to my repo]/package.json (relative path: ./src)
        Field 'browser' doesn't contain a valid alias configuration
      after using description file: [absolute path to my repo]/package.json (relative path: ./src)
        using description file: [absolute path to my repo]/package.json (relative path: ./src/components/DoISuportIt)
          as directory
            [absolute path to my repo]/src/components/DoISuportIt doesn't exist
          no extension
            Field 'browser' doesn't contain a valid alias configuration
            [absolute path to my repo]/src/components/DoISuportIt doesn't exist
          .js
            Field 'browser' doesn't contain a valid alias configuration
            [absolute path to my repo]/src/components/DoISuportIt.js doesn't exist
          .jsx
            Field 'browser' doesn't contain a valid alias configuration
            [absolute path to my repo]/src/components/DoISuportIt.jsx doesn't exist
[[absolute path to my repo]/src/components/DoISuportIt]
[[absolute path to my repo]/src/components/DoISuportIt]
[[absolute path to my repo]/src/components/DoISuportIt.js]
[[absolute path to my repo]/src/components/DoISuportIt.jsx]

package.json

{
  "version": "1.0.0",
  "main": "./src/main.js",
  "scripts": {
    "build": "webpack --progress --display-error-details"
  },
  "devDependencies": {
    ...
  },
  "dependencies": {
    ...
  }
}

关于它所抱怨的浏览器字段，我能够找到的文档是:package-browser-field-spec。也有webpack文档，但它似乎默认开启:aliasFields: ["browser"]。我尝试在我的包中添加一个浏览器字段。Json，但这似乎没有任何好处。

webpack.config.js

import path from 'path';
const source = path.resolve(__dirname, 'src');

export default {
  context: __dirname,
  entry: './src/main.js',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: '[name].js',
  },
  resolve: {
    alias: {
      components: path.resolve(__dirname, 'src/components'),
    },
    extensions: ['.js', '.jsx'],
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        include: source,
        use: {
          loader: 'babel-loader',
          query: {
            cacheDirectory: true,
          },
        },
      },
      {
        test: /\.css$/,
        include: source,
        use: [
          { loader: 'style-loader' },
          {
            loader: 'css-loader',
            query: {
              importLoader: 1,
              localIdentName: '[path]___[name]__[local]___[hash:base64:5]',
              modules: true,
            },
          },
        ],
      },
    ],
  },
};

src / main.js

import DoISuportIt from 'components/DoISuportIt';

src /组件/ DoISuportIt / index.jsx

export default function() { ... }

为完整起见，.babelrc

{
  "presets": [
    "latest",
    "react"
  ],
  "plugins": [
    "react-css-modules"
  ],
  "env": {
    "production": {
      "compact": true,
      "comments": false,
      "minified": true
    }
  },
  "sourceMaps": true
}

我做错了什么/遗漏了什么?

当前回答

在我的情况下，我得到这个错误: (我使用webpack 5与React v18和React Router v6)

ERROR in ./src/components/App/App.jsx 5:0-42
Module not found: Error: Can't resolve '../../Pages/Profile' in 'C:\Users\nicho\Desktop\projects\webpack-starter-with-react\src\components\App'  
resolve '../../Pages/Profile' in 'C:\Users\nicho\Desktop\projects\webpack-starter-with-react\src\components\App'
  using description file: C:\Users\nicho\Desktop\projects\webpack-starter-with-react\package.json (relative path: ./src/components/App)
    Field 'browser' doesn't contain a valid alias configuration
    using description file: C:\Users\nicho\Desktop\projects\webpack-starter-with-react\package.json (relative path: ./src/Pages/Profile)
      no extension
        Field 'browser' doesn't contain a valid alias configuration
        C:\Users\nicho\Desktop\projects\webpack-starter-with-react\src\Pages\Profile doesn't exist
      .js
        Field 'browser' doesn't contain a valid alias configuration
        C:\Users\nicho\Desktop\projects\webpack-starter-with-react\src\Pages\Profile.js doesn't exist
      .json
        Field 'browser' doesn't contain a valid alias configuration
        C:\Users\nicho\Desktop\projects\webpack-starter-with-react\src\Pages\Profile.json doesn't exist
      .wasm
        Field 'browser' doesn't contain a valid alias configuration
        C:\Users\nicho\Desktop\projects\webpack-starter-with-react\src\Pages\Profile.wasm doesn't exist
      as directory
        C:\Users\nicho\Desktop\projects\webpack-starter-with-react\src\Pages\Profile doesn't exist
 @ ./src/index.js 3:0-43 5:46-49

webpack 5.72.1 compiled with 3 errors in 1872 ms

将文件扩展名添加到模块导入中，为我修复了这个问题:

从这个:

import Home from '../../Pages/Home'

import Home from '../../Pages/Home.jsx'

2022-05-18 20:28:37

其他回答

在我的情况下，到webpack.config.js的最后，在我应该导出配置的地方，有一个打字错误:export(应该是exports)，这导致加载webpack.config.js失败。

const path = require('path');

const config = {
    mode: 'development',
    entry: "./lib/components/Index.js",
    output: {
        path: path.resolve(__dirname, 'public'),
        filename: 'bundle.js'
    },
    module: {
        rules: [
            {
                test: /\.js$/,
                loader: 'babel-loader',
                exclude: path.resolve(__dirname, "node_modules")
            }
        ]
    }
}

// pay attention to "export!s!" here
module.exports = config;

2018-04-21 20:30:59

我正在使用single-spa，遇到了这个错误问题

Module not found: Error: Can't resolve '/builds/**/**/src\main.single-spa.ts' in /builds/**/**'

我最终在角上找到了答案。Json构建选项“main”被设置为src\\main.single- spats。改为src/main.single-spa。它修好了。

2021-05-26 17:45:57

在我的情况下，我得到这个错误: (我使用webpack 5与React v18和React Router v6)

ERROR in ./src/components/App/App.jsx 5:0-42
Module not found: Error: Can't resolve '../../Pages/Profile' in 'C:\Users\nicho\Desktop\projects\webpack-starter-with-react\src\components\App'  
resolve '../../Pages/Profile' in 'C:\Users\nicho\Desktop\projects\webpack-starter-with-react\src\components\App'
  using description file: C:\Users\nicho\Desktop\projects\webpack-starter-with-react\package.json (relative path: ./src/components/App)
    Field 'browser' doesn't contain a valid alias configuration
    using description file: C:\Users\nicho\Desktop\projects\webpack-starter-with-react\package.json (relative path: ./src/Pages/Profile)
      no extension
        Field 'browser' doesn't contain a valid alias configuration
        C:\Users\nicho\Desktop\projects\webpack-starter-with-react\src\Pages\Profile doesn't exist
      .js
        Field 'browser' doesn't contain a valid alias configuration
        C:\Users\nicho\Desktop\projects\webpack-starter-with-react\src\Pages\Profile.js doesn't exist
      .json
        Field 'browser' doesn't contain a valid alias configuration
        C:\Users\nicho\Desktop\projects\webpack-starter-with-react\src\Pages\Profile.json doesn't exist
      .wasm
        Field 'browser' doesn't contain a valid alias configuration
        C:\Users\nicho\Desktop\projects\webpack-starter-with-react\src\Pages\Profile.wasm doesn't exist
      as directory
        C:\Users\nicho\Desktop\projects\webpack-starter-with-react\src\Pages\Profile doesn't exist
 @ ./src/index.js 3:0-43 5:46-49

webpack 5.72.1 compiled with 3 errors in 1872 ms

将文件扩展名添加到模块导入中，为我修复了这个问题:

从这个:

import Home from '../../Pages/Home'

import Home from '../../Pages/Home.jsx'

2022-05-18 20:28:37

将我的条目更改为

entry: path.resolve(__dirname, './src/js/index.js'),

这招奏效了。

2018-04-04 19:40:20

我在运行一个GitHub动作时得到这个错误。这个问题是因为我将包列为对等依赖项而不是依赖项。

由于我正在使用Rollup，解决方案是将包同时作为对等依赖项和开发依赖项安装，并使用Rollup -plugin-peer- dps -external从最终构建中删除开发依赖项。

2021-10-21 13:47:01

字段“browser”不包含有效的别名配置

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