新鲜的新Angular 8 / Electron 5 App上的白色屏幕

Question

我正在构建和运行Angular 8 / Electron 5桌面应用程序。我认为安装正确之后，运行该应用程序将显示黑屏。

使用：
电子5.0.2
Angular CLI 8.0.1
节点10.16.0
macOS Mojave 10.14.5
...

ng new my-app
npm i -D electron

package.json

{
  ...
  "main": "main.js", //<-- ADDED
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e",
    "electron": "ng build --baseHref=./ && electron ." //<-- ADDED
  }
  ...
}

main.js

const { app, BrowserWindow } = require("electron");
const path = require("path");
const url = require("url");

let win;

function createWindow() {
  win = new BrowserWindow({ width: 800, height: 600 });

  win.loadURL(
    url.format({
      pathname: path.join(__dirname, `/dist/index.html`), //<-- CHANGED
      protocol: "file:",
      slashes: true
    })
  );

  win.on("closed", () => {
    win = null;
  });
}

app.on("ready", createWindow);

app.on("window-all-closed", () => {
  if (process.platform !== "darwin") {
    app.quit();
  }
});

app.on("activate", () => {
  if (win === null) {
    createWindow();
  }
});

我还将angular.json中的outputPath 更改为“ dist”

  {
    ...
    "outputPath": "dist"
    ...
  }

启动应用程序 npm run electron

当应用打开时，我看到一个空白的空白屏幕。经过检查，我可以看到主体和<app-root>元素，但是我在页面上看到的只是一个空白的空白屏幕。

这样做时，ng new my-app我在CLI中尝试了启用和不启用路由的标志。

在电子安全警告之前的电子应用程序控制台中获取以下错误：

runtime-es2015.js:1 Failed to load module script: The server responded with a non-JavaScript MIME type of "". Strict MIME type checking is enforced for module scripts per HTML spec.
styles-es2015.js:1 Failed to load module script: The server responded with a non-JavaScript MIME type of "". Strict MIME type checking is enforced for module scripts per HTML spec.
main-es2015.js:1 Failed to load module script: The server responded with a non-JavaScript MIME type of "". Strict MIME type checking is enforced for module scripts per HTML spec.
polyfills-es2015.js:1 Failed to load module script: The server responded with a non-JavaScript MIME type of "". Strict MIME type checking is enforced for module scripts per HTML spec.
vendor-es2015.js:1 Failed to load module script: The server responded with a non-JavaScript MIME type of "". Strict MIME type checking is enforced for module scripts per HTML spec.

Answer 1

I got my electron application to work by changing the target in the tsconfig.json to es5.

{
  "compileOnSave": false,
  "compilerOptions": {
    "importHelpers": true,
    "module": "esnext",
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "declaration": false,
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "target": "es5", <-- HERE
    "typeRoots": [
      "node_modules/@types"
    ],
    "lib": [
      "es2017",
      "dom"
    ]
  }
}

Prior to this, I was getting the blank (white) screen too after updating the Angular 8. Seems now that Angular does a build in both es5 and es2015, electron doesn't like that. I would guess this will be fixed in the future.

UPDATE 2019-10-24:

Looks like this was fixed in electron@7.0.0. You can target es2015 with that version. Tested with @angular/cli@8.3.14.