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

只是为了记录,因为我有类似的问题,也许这个答案会帮助别人:在我的情况下,我使用的是使用.js文件的库,我没有这样的扩展在webpack解析扩展。添加适当的扩展固定问题:

module.exports = {
(...)
  resolve: {
    extensions: ['.ts', '.js'],
  }
}

其他回答

我的情况相当尴尬:我为一个JS库添加了typescript绑定,却没有添加库本身。

所以如果你这样做:

npm install --save @types/lucene

别忘了:

npm install --save lucene

很明显,但我完全忘记了,这花了我不少时间。

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。

我得到了同样的错误,我不想要绝对导入。我的正常相对导入没有工作与相同的错误和“模块未找到”。

我在webpack配置中没有这个。

resolve: {
  extensions: ['.tsx', '.ts', '.js'],
}

我在一个TypeScript项目中遇到了这个错误。在我的webpack.config.js文件中,我只解析TypeScript文件。

resolve: {
    extensions: [".ts"],
}

然而,我注意到导致错误的node_module:

字段“browser”不包含有效的别名配置

没有”。ts”文件(这是可以理解的,因为模块已经转换为香草JS。哎!)。

所以为了解决这个问题,我更新了resolve声明:

resolve: {
    extensions: [".ts", ".js"],
}

在Windows PowerShell上,以下命令引发此错误:

npx webpack .\src\js\main.js --output-filename output.js

正确的命令是:

npx webpack ./src/js/main.js --output-filename output.js

注意,在使用npx时,即使在Windows上,我们也必须使用Linux路径分隔符(/)。