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| 'use strict'
const chalk = require('chalk')
const electron = require('electron')
const path = require('path')
const { say } = require('cfonts')
const { spawn } = require('child_process')
const webpack = require('webpack')
const WebpackDevServer = require('webpack-dev-server')
const webpackHotMiddleware = require('webpack-hot-middleware')
const mainConfig = require('./webpack.main.config')
const rendererConfig = require('./webpack.renderer.config')
let electronProcess = null
let manualRestart = false
let hotMiddleware
function logStats (proc, data) {
let log = ''
log += chalk.yellow.bold(`┏ ${proc} Process ${new Array((19 - proc.length) + 1).join('-')}`)
log += '\n\n'
if (typeof data === 'object') {
data.toString({
colors: true,
chunks: false
}).split(/\r?\n/).forEach(line => {
log += ' ' + line + '\n'
})
} else {
log += ` ${data}\n`
}
log += '\n' + chalk.yellow.bold(`┗ ${new Array(28 + 1).join('-')}`) + '\n'
console.log(log)
}
// 启动渲染进程
// 整体作用：将dev-client.js和renderer/main.js合并到webpack entry字段，输出到根目录下的/dist/electron/main.js文件中
function startRenderer () {
// 加载webpack配置
return new Promise((resolve, reject) => {
rendererConfig.entry.renderer = [path.join(__dirname, 'dev-client')].concat(rendererConfig.entry.renderer)
rendererConfig.mode = 'development'
// 创建webpack
const compiler = webpack(rendererConfig)
// 创建webpack热加载
// webpackHotMiddleware的heartbeat的参数作用并不是检测文件的频率，而是保持服务器链接存活的心跳频率
hotMiddleware = webpackHotMiddleware(compiler, {
log: false,
heartbeat: 2500
})
// 编译状态监控
# 监听的是 compilation事件
compiler.hooks.compilation.tap('compilation', compilation => {
compilation.hooks.htmlWebpackPluginAfterEmit.tapAsync('html-webpack-plugin-after-emit', (data, cb) => {
// 钩子函数，检测webpack的编译状态，把其中的html-webpack-plugin-after-emit状态，发布到webpackHotMiddleware中
hotMiddleware.publish({ action: 'reload' })
cb()
})
})
// 输出打包编译过程
compiler.hooks.done.tap('done', stats => {
logStats('Renderer', stats)
})
// 创建webpack-dev-server
const server = new WebpackDevServer(
compiler,
{
contentBase: path.join(__dirname, '../'),
quiet: true,
before (app, ctx) {
// 使用webpackHotMiddleware
app.use(hotMiddleware)
ctx.middleware.waitUntilValid(() => {
resolve()
})
}
}
)
// 监听窗口
server.listen(9080)
})
}
// 启动主进程 - 过程与渲染进程是类似的
// 创建webpack，实时发布hotMiddleware，主代码热更新
function startMain () {
// 导入index.dev.js，该文件主要安装electron-debug工具，同时也安装了vue-devtools工具
// webpack.config.main.js与render相比，main不需要去去处理vue，图片， css，html等，只需要对js处理
return new Promise((resolve, reject) => {
mainConfig.entry.main = [path.join(__dirname, '../src/main/index.dev.js')].concat(mainConfig.entry.main)
mainConfig.mode = 'development'
// 创建主进程的 webpack
const compiler = webpack(mainConfig)
# 监听的是watch-run事件
compiler.hooks.watchRun.tapAsync('watch-run', (compilation, done) => {
logStats('Main', chalk.white.bold('compiling...'))
hotMiddleware.publish({ action: 'compiling' })
done()
})
// 与render不同，没有使用WebpackDevServer的方式自动更新界面，而是通过webpack的watch模式，不断重新启动程序，类似于electron-forge start
compiler.watch({}, (err, stats) => {
if (err) {
console.log(err)
return
}
logStats('Main', stats)
if (electronProcess && electronProcess.kill) {
manualRestart = true
process.kill(electronProcess.pid)
electronProcess = null
// 重新启动项目
startElectron()
setTimeout(() => {
manualRestart = false
}, 5000)
}
resolve()
})
})
}
// 启动electron
function startElectron () {
var args = [
'--inspect=5858',
path.join(__dirname, '../dist/electron/main.js')
]
// detect yarn or npm and process commandline args accordingly
if (process.env.npm_execpath.endsWith('yarn.js')) {
args = args.concat(process.argv.slice(3))
} else if (process.env.npm_execpath.endsWith('npm-cli.js')) {
args = args.concat(process.argv.slice(2))
}
// 创建主进程执行特别命令
electronProcess = spawn(electron, args)
electronProcess.stdout.on('data', data => {
electronLog(data, 'blue')
})
electronProcess.stderr.on('data', data => {
electronLog(data, 'red')
})
electronProcess.on('close', () => {
if (!manualRestart) process.exit()
})
}
function electronLog (data, color) {
let log = ''
data = data.toString().split(/\r?\n/)
data.forEach(line => {
log += ` ${line}\n`
})
if (/[0-9A-z]+/.test(log)) {
console.log(
chalk[color].bold('┏ Electron -------------------') +
'\n\n' +
log +
chalk[color].bold('┗ ----------------------------') +
'\n'
)
}
}
// electron-vue Log输出
function greeting () {
const cols = process.stdout.columns
let text = ''
if (cols > 104) text = 'electron-vue'
else if (cols > 76) text = 'electron-|vue'
else text = false
if (text) {
say(text, {
colors: ['yellow'],
font: 'simple3d',
space: false
})
} else console.log(chalk.yellow.bold('\n electron-vue'))
console.log(chalk.blue(' getting ready...') + '\n')
}
// 初始函数
function init () {
greeting()
// 主进程和渲染进程都启动完毕
Promise.all([startRenderer(), startMain()])
.then(() => {
startElectron()
})
.catch(err => {
console.error(err)
})
}
init()
|
