Angular 4 + Electron - 如何运行应用程序并观察变化(实时重新加载)

Question

我正在使用 Angular 4 创建一个 Electron 应用程序。我如何设置它以便它监视任何更改并实时重新加载它。

包.json

{
  "name": "angular-electron",
  "version": "0.0.0",
  "license": "MIT",
  "main": "main.js",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e",
    "electron": "electron .",
    "electron-build": "ng build --prod && electron ."
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^4.2.4",
    "@angular/common": "^4.2.4",
    "@angular/compiler": "^4.2.4",
    "@angular/core": "^4.2.4",
    "@angular/forms": "^4.2.4",
    "@angular/http": "^4.2.4",
    "@angular/platform-browser": "^4.2.4",
    "@angular/platform-browser-dynamic": "^4.2.4",
    "@angular/router": "^4.2.4",
    "angular-svg-round-progressbar": "^1.1.0",
    "bulma": "^0.5.3",
    "core-js": "^2.4.1",
    "rxjs": "^5.4.2",
    "zone.js": "^0.8.14"
  },
  "devDependencies": {
    "@angular/cli": "1.4.1",
    "@angular/compiler-cli": "^4.2.4",
    "@angular/language-service": "^4.2.4",
    "@types/jasmine": "~2.5.53",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~6.0.60",
    "codelyzer": "~3.1.1",
    "electron": "^1.7.6",
    "electron-packager": "^9.1.0",
    "jasmine-core": "~2.6.2",
    "jasmine-spec-reporter": "~4.1.0",
    "karma": "~1.7.0",
    "karma-chrome-launcher": "~2.1.1",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.1.2",
    "ts-node": "~3.2.0",
    "tslint": "~5.3.2",
    "typescript": "~2.3.3"
  }
}

Electron

const { app, BrowserWindow } = require('electron')

let win;

function createWindow () {
  // Create the browser window.
  win = new BrowserWindow({
    width: 600, 
    height: 600,
    backgroundColor: '#ffffff',
    icon: `file://${__dirname}/dist/assets/logo.png`
  })

  win.loadURL(`file://${__dirname}/dist/index.html`)

  //// uncomment below to open the DevTools.
  // win.webContents.openDevTools()

  // Event when the window is closed.
  win.on('closed', function () {
    win = null
  })
}

// Create window on electron intialization
app.on('ready', createWindow)

// Quit when all windows are closed.
app.on('window-all-closed', function () {

  // On macOS specific close process
  if (process.platform !== 'darwin') {
    app.quit()
  }
})

app.on('activate', function () {
  // macOS specific close process
  if (win === null) {
    createWindow()
  }
})

谢谢。

目前，我每次都使用以下命令构建我的应用程序

ng build --prod && electron .

这很累，所以我希望能够构建运行一个命令，以便它监视更改和实时重新加载。

Answer 1

您可以使用 electron-reload用于热模块重新加载。它监听文件更改并重新加载 Electron 应用程序。

只需将它添加到 package.json 中的 devDependencies。

然后，您必须将它添加到您的 main.ts 中:

import { app, BrowserWindow, Menu } from 'electron';

let win, serve;
const args = process.argv.slice(1);
serve = args.some(val => val === '--serve');

if (serve) {
  require('electron-reload')(__dirname, {});
}

然后在你的json包中添加命令

"start": "webpack --watch",
"serve": "npm run build:main && electron ./dist --serve",
"build:main": "tsc main.ts --outDir dist && copyfiles package.json dist && cd dist && npm install --prod"

build:main 是编译项目的构建脚本。这会编译所有 Typescript 文件并将它们放入 dist 文件夹中。然后，它运行 npm install 从 NPM 下载和安装模块。

您需要模块 bundler Webpack 才能运行。安装它

npm install --save-dev webpack

首先，在控制台中运行 npm start。然后，在第二个控制台中执行npm run serve。现在，它会监听更改并根据文件更改重新编译。

tsc 代表 TypeScript 编译器。如果您将 tsc 用作节点模块，请确保已安装它:

npm install -g typescript

我目前将它用于具有相同设置(Angular 4、Electron)的项目，并且它运行良好。