“您可能需要一个合适的加载程序来处理这种文件类型"使用 Webpack 和 Babel [英] "You may need an appropriate loader to handle this file type" with Webpack and Babel

问题描述

我正在尝试使用 Webpack 和 Babel 来编译 ES6 资产，但收到以下错误消息:

I am trying to use Webpack with Babel to compile ES6 assets, but I am getting the following error message:

You may need an appropriate loader to handle this file type.
| import React from 'react';
| /*
| import { render } from 'react-dom'

这是我的 Webpack 配置的样子:

Here is what my Webpack config looks like:

var path = require('path');
var webpack = require('webpack');

module.exports = {
  entry: './index',
  output: {
    path: path.join(__dirname, 'dist'),
    filename: 'bundle.js',
    publicPath: '/dist/'
  },
  module: {
    loaders: [
      {
        test: /.jsx?$/,
        loader: 'babel-loader',
        exclude: /node_modules/
      }
    ]
  }
}

这是使用 Webpack 的中间件步骤:

Here is the middleware step that makes use of Webpack:

var webpack = require('webpack');
var webpackDevMiddleware = require('webpack-dev-middleware');
var config = require('./webpack.config');

var express = require('express');
var app = express();
var port = 3000;

var compiler = webpack(config);
app.use(webpackDevMiddleware(compiler, {
  noInfo: true,
  publicPath: config.output.publicPath
}));

app.get('/', function(req, res) {
  res.sendFile(__dirname + '/index.html');
});

app.listen(port, function(err) {
  console.log('Server started on http://localhost:%s', port);
});

我的 index.js 文件所做的只是导入 react，但似乎 'babel-loader' 不起作用.

All my index.js file is doing is importing react, but it seems like the 'babel-loader' is not working.

我使用的是 'babel-loader' 6.0.0.

I am using 'babel-loader' 6.0.0.

推荐答案

您需要安装es2015预设:

npm install babel-preset-es2015

然后配置babel-loader:

{
    test: /.jsx?$/,
    loader: 'babel-loader',
    exclude: /node_modules/,
    query: {
        presets: ['es2015']
    }
}

这篇关于“您可能需要一个合适的加载程序来处理这种文件类型"使用 Webpack 和 Babel的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！