未生成 Webpack 捆绑文件

Question

我只是 webpack 和 React 的新手，只是浏览了文档并创建了一个可以工作的示例。不幸的是我卡住了，无法继续。问题是未生成捆绑文件。我创建的文件是

package.json

{
  "name": "rohith",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "webpack-dev-server"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "react": "^15.4.1",
    "react-dom": "^15.4.1",
    "webpack": "^1.13.3",
    "webpack-dev-server": "^1.16.2"
  }
}

webpack.config.js

module.export = {
    entry : './main.js',
    output : {
        path : './',
        filename : 'index.js'
    },
    devServer : {
        inline : true,
        port : 3333
    },
    module : {
        loaders : [
            {
                test : /\.js$/,
                exclude : /node_modules/,
                loader : 'babel',
                query : {
                    presets : ['es2015','react']
                }
            }
        ]
    }
}

App.js

import React from 'react';
class App extends React.Component {
    render(){
        return <div>Hello</div>
    }
}

export default App

main.js

import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';
ReactDOM.render(<App />,document.getElementById('app'));

index.html

<!DOCTYPE html>
<html lang = "en">
<head>
    <meta charset = "UTF-8">
    <title>Setup</title>
</head>
<body>
    <div id = "app"></div>
    <script src ="index.js"></script>
</body>
</html>

我得到那个包是有效的，但没有生成 index.js。不能运行在本地主机 3333

谢谢，

Answer 1

在 webpack.config.js 中，使用 module.exports 而不是 module.export。参见 Output filename not configured Error in Webpack 另请注意，您的 package.json 缺少一些依赖项。这是有效的更新 package.json：

{
"name": "rohith",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
  "start": "webpack-dev-server"
},
"author": "",
"license": "ISC",
"dependencies": {
  "react": "^15.4.1",
  "react-dom": "^15.4.1",
  "webpack": "^1.13.3",
  "webpack-dev-server": "^1.16.2"
},
"devDependencies": {
  "babel": "^6.5.2",
  "babel-core": "^6.18.2",
  "babel-loader": "^6.2.8",
  "babel-preset-es2015": "^6.18.0",
  "babel-preset-react": "^6.16.0"
}
}

Answer 2

我认为问题是你没有给出绝对输出路径。

试试这个：

var path = require('path');

module.exports = {
    entry : './main.js',
    output : {
        path : path.join(__dirname, './'),
        filename : 'index.js'
    },
    devServer : {
        inline : true,
        port : 3333
    },
    module : {
        loaders : [
            {
                test : /\.js$/,
                exclude : /node_modules/,
                loader : 'babel',
                query : {
                    presets : ['es2015','react']
                }
            }
        ]
    }
}

希望对您有所帮助:)

Answer 3

将您的脚本对象替换为以下内容：

"scripts": {
    "start": "npm run build",
    "build": "webpack -p && webpack-dev-server"
  },

然后，运行 $ npm start

Answer 4

对我来说，问题出在 package.json 下 "scripts"

修复如下：

在您的 package.json 文件中，在脚本下添加以下内容：

"scripts": {
"start": "webpack-dev-server",
"build": "webpack -p" }

首先我运行构建然后开始。

yarn build

如果您首先构建，那么您的 bundle.js 文件将被创建，之后您可以使用此命令：

yarn start

Answer 5

如果没有输出文件 (bundle.js) 并且构建成功

Hash: 77a20ba03ab962a1f5be
Version: webpack 4.41.0
Time: 1039ms
Built at: 10/04/2019 5:24:48 PM
Asset      Size  Chunks             Chunk Names
main.js  1.09 MiB    main  [emitted]  main
Entrypoint main = main.js
[./react_rest/frontend/src/index.js] 35 bytes {main} [built]
+ 12 hidden modules

webpack :

module.exports = {
    entry: './react_rest/frontend/src/index.js',
    module: {
        rules: [{
            test: /\.js$/,
            exclude: /node_modules/,
            use: {
                loader: "babel-loader"
            }
        }]
    },

    output: {
        filename: 'main.js'
    }
};

尝试使用var path = require('path');并分配输出目录

var path = require('path');

module.exports = {
    entry: './react_rest/frontend/src/index.js',
    module: {
        rules: [{
            test: /\.js$/,
            exclude: /node_modules/,
            use: {
                loader: "babel-loader"
            }
        }]
    },

    output: {
        path: path.join(__dirname,'./react_rest/frontend/static/frontend/'),
        filename: 'main.js'
    }
};

未生成 Webpack 捆绑文件

Webpack bundled file not generated

javascript

reactjs

webpack

webpack-dev-server