Webpack-错误:无法在加载器列表中定义“查询"和多个加载器 [英] Webpack - Error: Cannot define 'query' and multiple loaders in loaders list

问题描述

在我按照本教程在数组中添加了react-hot加载器后，出现了此错误: https://thoughtbot.com/blog/setting-up-webpack-for-react-and-hot-module-replacement

This error appeared after I added the react-hot loader in an array following this tutorial: https://thoughtbot.com/blog/setting-up-webpack-for-react-and-hot-module-replacement

我正在获取Error: Cannot define 'query' and multiple loaders in loaders list.

var WebpackDevServer = require("webpack-dev-server");
var webpack = require('webpack');
var path = require('path');
require("babel-polyfill");

var BUILD_DIR = path.resolve(__dirname, 'build');
var APP_DIR = path.resolve(__dirname, 'src');

module.exports = {
  entry: [
    'babel-polyfill',
    'bootstrap-loader',
    'webpack/hot/dev-server',
    APP_DIR + '/import.js',
  ],
  output: {
    path: BUILD_DIR,
    filename: 'bundle.js'
  },
  module: {
    loaders: [{
      test: /\.jsx?$/,
      loaders: ['react-hot', 'babel'],
      exclude: /node_modules/,
      query: {
        plugins: ['transform-runtime'],
        presets: ['es2015', 'stage-0', 'react']
      }
    }, {
      test: /\.css$/,
      loader: "style-loader!css-loader"
    }, {
      test: /\.scss$/,
      loaders: ["style", "css", "sass"]
    }, {
      test: /\.(png|woff|woff2|eot|ttf|svg|jpg|gif)$/,
      loader: 'url-loader?limit=100000'
    }]
  },
  plugins: [
    new webpack.ProvidePlugin({
      $: "jquery",
      jQuery: "jquery"
    }),
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoErrorsPlugin()
  ]
};

推荐答案

查询似乎是自定义单个加载程序行为的另一种方式，比内联指定这些参数更干净(见下文).如果存在多个加载程序，则Webpack不知道query配置适用于哪个.

It seems that the query is an alternative way of customizing the behaviour of a single loader, that is cleaner than specifying those parameters inline (see below). If multiple loaders are present, Webpack does not know to which the query configuration applies.

以下方法可以解决您的问题:

The following should solve your problem:

module: {
    loaders: [{
        test: /\.jsx?$/,
        exclude: /node_modules/,
        loaders: ['react-hot', 'babel?presets[]=es2015,presets[]=stage-0,presets[]=react,plugins[]=transform-runtime']
    }

---

编辑:尽管此解决方案适用于Webpack 1，但请参见其他答案，以获取在较新版本中工作的更清洁的解决方案.

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While this solution works for Webpack 1, see the other answers for cleaner solutions that work in more recent versions.

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