reactjs - Webpack 错误 React 和 ES6 之前在 Babelify 下工作

Question

我尝试从 babelify、watchify、browserify 迁移到 webpack、webpack 服务器和 babel。

我记得 6 个月前放弃了 webpack，因为它在尝试使用 aws-sdk 时给我带来了类似的问题。

由于某种原因，每次构建时都会出现以下错误:

Hash: 396f0bfb9d565b6f60f0 Version: webpack 1.14.0 Time: 61ms [0] ./src/index.js 0 bytes [built] [failed]

ERROR in ./src/index.js Module parse failed: C:\Users\james\Documents\hyre\src\index.js Unexpected token (9:8) You may need an appropriate loader to handle this file type. SyntaxError: Unexpected token (9:8) at Parser.pp$4.raise (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:2221:15) at Parser.pp.unexpected (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:603:10) at Parser.pp$3.parseExprAtom (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:1822:12) at Parser.pp$3.parseExprSubscripts (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:1715:21) at Parser.pp$3.parseMaybeUnary (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:1692:19) at Parser.pp$3.parseExprOps (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:1637:21) at Parser.pp$3.parseMaybeConditional (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:1620:21) at Parser.pp$3.parseMaybeAssign (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:1597:21) at Parser.pp$3.parseExprList (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:2165:22) at Parser.pp$3.parseSubscripts (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:1741:35) at Parser.pp$3.parseExprSubscripts (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:1718:17) at Parser.pp$3.parseMaybeUnary (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:1692:19) at Parser.pp$3.parseExprOps (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:1637:21) at Parser.pp$3.parseMaybeConditional (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:1620:21) at Parser.pp$3.parseMaybeAssign (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:1597:21) at Parser.pp$3.parseExpression (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:1573:21) at Parser.pp$1.parseStatement (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:727:47) at Parser.pp$1.parseTopLevel (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:638:25) at Parser.parse (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:516:17) at Object.parse (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\acorn\dist\acorn.js:3098:39) at Parser.parse (C:\Users\james\Documents\hyre\node_modules\webpack\lib\Parser.js:902:15) at DependenciesBlock. (C:\Users\james\Documents\hyre\node_modules\webpack\lib\NormalModule.js:104:16) at DependenciesBlock.onModuleBuild (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\webpack-core\lib\NormalModuleMixin.js:310:10) at nextLoader (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\webpack-core\lib\NormalModuleMixin.js:275:25) at C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\webpack-core\lib\NormalModuleMixin.js:259:5 at Storage.finished (C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\enhanced-resolve\lib\CachedInputFileSystem.js:38:16) at C:\Users\james\Documents\hyre\node_modules\webpack\node_modules\enhanced-resolve\node_modules\graceful-fs\graceful-fs.js:78:16 at FSReqWrap.readFileAfterClose [as oncomplete] (fs.js:445:3)

我相信我已按要求设置了一切。请查看我的文件:

webpack.config.js

module.exports = {
entry: './src/index.js',
  output: {
    path: __dirname + '/public/js',
    filename: 'bundle.js',
    resolve: {
      extensions: ['', '.js', '.jsx']
    },
    module: {
    loaders: [
      {
        test: /\.jsx?$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
        query: {
          cacheDirectory: true,
          presets: ['react', 'es2015']
        }
      }
    ]
  }
  }
}

package.json

{
  "name": "hyre",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "build": "webpack",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "aws-sdk": "^2.4.4",
    "babelify": "^7.3.0",
    "browserify": "^13.0.1",
    "is-my-date-valid": "^0.1.0",
    "lodash": "^4.17.2",
    "moment": "^2.14.1",
    "react": "^15.1.0",
    "react-date-picker": "^5.3.26",
    "react-datepicker": "^0.28.1",
    "react-dom": "^15.1.0",
    "watchify": "^3.7.0"
  },
  "devDependencies": {
    "babel-core": "^6.10.4",
    "babel-loader": "^6.2.4",
    "babel-preset-es2015": "^6.18.0",
    "babel-preset-react": "^6.11.1",
    "react-hot-loader": "^1.3.0",
    "transform-loader": "^0.2.3",
    "webpack": "^1.14.0"
  }
}

index.js

/*let message = 'Loaded----->';
console.log(message);*/

import React from 'react';
import { render } from 'react-dom';
import App from './components/app';

render (<App />, document.getElementById('app'));

Answer 1

您的webpack配置有错误。 resolve、module 和 loaders 属性不应嵌套在 output 属性中，它们应该位于同一级别。这是有效的配置:

module.exports = {
  entry: './src/index.js',
  output: {
    path: __dirname + '/public/js',
    filename: 'bundle.js'
  },
  resolve: {
    extensions: ['', '.js', '.jsx']
  },
  module: {
    loaders: [
      {
        test: /\.jsx?$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
        query: {
          presets: ['react', 'es2015']
        }
      }
    ]
  }
}