前一篇文章说了说怎样使用 Webpack2 预编译 Electron 应用,但是有时候我们希望使用 Webpack2 的热部署功能来提高我们的开发效率,使我们在代码修改后能自动立即看到修改后的结果。那么今天就看看怎样来实现这个功能。
$ npm install --save-dev electron
$ npm install --save-dev electron-packager
$ npm install --save-dev webpack
$ npm install --save-dev webpack-dev-server
$ npm install --save-dev webpack-target-electron-renderer
$ npm install --save-dev is-electron-renderer
$ npm install --save-dev css-loader
$ npm install --save-dev style-loader
$ npm install --save-dev extract-text-webpack-plugin
** 注:这里使用的webpack是2.5.1版本 **
这个演示程序包含的文件结构如下所示:
myapp
|-- main.js
|-- package.json
|-- webpack.config.js
`-- src
|-- index.html
|-- index.js
|-- user.js
`-- style.css
{
"name": "myapp",
"version": "1.0.0",
"description": "",
"main": "main.js",
"scripts": {
"electron": "webpack --target electron-renderer && electron .",
"web": "webpack --target web && webpack-dev-server --target web --hot --inline",
"packager": "webpack && electron-packager . --platform=linux --electron-version=1.6.6 --overwrite"
},
"author": "",
"license": "ISC",
"devDependencies": {
"css-loader": "^0.28.1",
"electron": "^1.6.7",
"electron-packager": "^8.7.0",
"extract-text-webpack-plugin": "^2.1.0",
"is-electron-renderer": "^2.0.1",
"style-loader": "^0.17.0",
"webpack": "^2.5.1",
"webpack-dev-server": "^2.4.5",
"webpack-target-electron-renderer": "^0.4.0"
}
}
/* eslint strict: 0 */
'use strict';
const path = require('path');
const webpack = require('webpack');
module.exports ={
entry: [
'./src/index.js'
],
output: {
path: path.join(__dirname, 'src'),
publicPath: '/src/',
filename: 'bundle.js',
},
module: {
rules: [{
test: /\.css$/,
use: [ 'style-loader', 'css-loader' ]
}]
}
};
** 注:webpack.config.js 中我去掉了target 配置项 **
/* eslint strict: 0 */
'use strict';
const electron = require('electron');
const app = electron.app;
const BrowserWindow = electron.BrowserWindow;
let mainWindow = null;
app.on('window-all-closed', () => {
if (process.platform !== 'darwin') app.quit();
});
app.on('ready', () => {
mainWindow = new BrowserWindow({ width: 1024, height: 768 });
mainWindow.loadURL(`file://${__dirname}/src/index.html`);
mainWindow.webContents.openDevTools();
mainWindow.on('closed', () => {
mainWindow = null;
});
});
webpack 入口文件,这里仅仅打印当前应用是否是运行在 electron 中。
import './style.css';
console.log('This is index!');
var User = require('./user');
var user1 = new User('kongxx');
console.log("Hi, I am " + user1.getName());
var user2 = new User('ken');
console.log("Hi, I am " + user2.getName());
console.log('running in electron: ', require('is-electron-renderer'));
测试的 html 文件,其中使用了 webpack 预编译好的 bundle.js 文件。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Hello World</title>
</head>
<body>
<script type="text/javascript" src="./bundle.js" charset="utf-8"></script>
<h1>Hello World</h1>
</body>
</html>
一个自定义的模块文件
module.exports = User;
function User(name) {
this.name = name;
}
User.prototype.getName = function() {
return this.name;
}
一个自定义的 css 文件
body {
background: grey;
font-size: 20px;
}