配置为:

对于.babelrc

{
 "presets": ["react", "es2015", "stage-0"],
 "env": {
 "development": {
  "presets": ["react-hmre"]
  }
 }
}


对于Web pack.config.dev.js:

// Dependencies
import webpack from 'webpack';
import path from 'path';

// Paths
const PATHS = {
 index: path.join(__dirname, 'src/index'),
 build: path.join(__dirname, '/dist'),
 base: path.join(__dirname, 'src')
};

export default {
 devtool: 'cheap-module-eval-source-map',
 entry: [
  'webpack-hot-middleware/client?reload=true',
  PATHS.index
 ],
 output: {
  path: PATHS.build,
  publicPath: '/',
  filename: 'bundle.js'
},
plugins: [
 new webpack.HotModuleReplacementPlugin(),
 new webpack.NoEmitOnErrorsPlugin()
],
module: {
 loaders: [{
   test: /\.js?$/,
   loaders: ['babel-loader'],
   include: PATHS.base
  },
  {
   test: /(\.css)$/,
   loaders: ['style-loader', 'css-loader']
  },
  {
   test: /\.svg(\?v=\d+\.\d+\.\d+)?$/,
   loader: 'url-loader?limit=10000&mimetype=image/svg+xml'
  }]
 }
};


这是针对服务器文件的:

// Dependencies
import express from 'express';
import webpack from 'webpack';
import path from 'path';
import webpackDevMiddleware from 'webpack-dev-middleware';
import webpackHotMiddleware from 'webpack-hot-middleware';
import open from 'open';

// Webpack Configuration
import webpackConfig from '../../webpack.config.dev';

// Server Port
const port = 3000;

// Express app
const app = express();

// Webpack Compiler
const webpackCompiler = webpack(webpackConfig);

app.use(webpackDevMiddleware(webpackCompiler));
app.use(webpackHotMiddleware(webpackCompiler));

// Sending all the traffic to React
app.get('*', (req, res) => {
 res.sendFile(path.join(__dirname, '../public/index.html'));
});

// Listen port 3000
app.listen(port, err => {
 if (!err) {
  open(`http://localhost:${port}`);
 }
});


这是我得到的错误:

抛出新的WebpackOptionsValidationError(webpackOptionsValidationErrors);
        ^

WebpackOptionsValidationError:无效的配置对象。已使用与API模式不匹配的配置对象初始化Webpack。
 -configuration.module具有未知的属性“ loaders”。这些属性有效:
   对象{exprContextCritical?,exprContextRecursive?,exprContextRegExp?,exprContextRequest?,noParse ?、规则?,defaultRules?,unknownContextCritical?,unknownContextRecursive?,unknownContextRegExp?,unknownContextRequest?,unsafeCache?,wrappedContextContextCritical?,wrappedContextRecursive?,wrappedContextRegExps?,strictExport strictThisContextOnImports? }
   ->影响普通模块(NormalModuleFactory)的选项。
    在webpack上(/ Users / yaelyanez / Google Drive / Proyectos / React / hello-world / node_modules / webpack / lib / webpack.js:24:9)
    在对象。 (/ Users / yaelyanez / Google Drive / Proyectos / React / hello-world / src / server / index.js:19:25)
    在Module._compile(内部/模块/cjs/loader.js:654:30)
    在加载程序上(/ Users / yaelyanez / Google Drive / Proyectos / React / hello-world / node_modules / babel-register / lib / node.js:144:5)
    在Object.require.extensions。(匿名函数)[作为.js](/ Users / yaelyanez / Google Drive / Proyectos / React / hello-world / node_modules / babel-register / lib / node.js:154:7)
    在Module.load(internal / modules / cjs / loader.js:566:32)
    在tryModuleLoad(内部/模块/cjs/loader.js:506:12)
    在Function.Module._load(内部/模块/cjs/loader.js:498:3)
    在Function.Module.runMain(内部/模块/cjs/loader.js:695:10)
    在对象。 (/ Users / yaelyanez / Google Drive / Proyectos / React / hello-world / node_modules / babel-cli / lib / _babel-node.js:154:22)
npm ERR!代码ELIFECYCLE
npm ERR! errno 1
npm ERR! hello-world@0.1.0开始:babel-node src/server
npm ERR!退出状态1
npm ERR!
npm ERR!在hello-world@0.1.0启动脚本处失败。
npm ERR! npm可能不是问题。上面可能还有其他日志记录输出。

npm ERR!可以在以下位置找到此运行的完整日志:
npm ERR! /Users/yaelyanez/.npm/_logs/2018-04-23T20_57_21_731Z-debug.log

最佳答案

您的配置文件的webpack模块配置不正确。
您应该编写规则而不是加载程序。
配置示例应如下所示:

module: {
 rules: [{
   test: /\.js?$/,
   loaders: ['babel-loader'],
   include: PATHS.base
  },
  {
   test: /(\.css)$/,
   loaders: ['style-loader', 'css-loader']
  },
  {
   test: /\.svg(\?v=\d+\.\d+\.\d+)?$/,
   loader: 'url-loader?limit=10000&mimetype=image/svg+xml'
  }]
 }


还要在CommonJS中编写您的webpack配置文件。有关更多配置详细信息,请参阅webpack文档。 https://webpack.js.org/concepts/configuration/

关于javascript - 无法正确配置Webpack 2.2.1,请继续抛出WebpackOptionsValidationError,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/49989855/

10-12 00:08
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