discord_arch_electron stream fix

index.js

const electron = require("electron");
const { join } = require("path");

class BrowserWindow extends electron.BrowserWindow {
  constructor(options) {
    if (options?.webPreferences?.preload && options.title) {
      // Replace Discords preload script with our own
      process.env.DISCORD_PRELOAD = options.webPreferences.preload;
      options.webPreferences.preload = join(__dirname, "preload.js");

      // Fix for sandbox being on by default in newer electron versions
      options.webPreferences.sandbox = false;
    }
    super(options);
  }
}
Object.assign(BrowserWindow, electron.BrowserWindow);

electron.ipcMain.handle("DAE_GET_STREAM_SOURCES", (_, opts) =>
  electron.desktopCapturer.getSources(opts)
);

// Patch electron with our modified BrowserWindow
const electronPath = require.resolve("electron");
delete require.cache[electronPath].exports;
require.cache[electronPath].exports = {
  ...electron,
  BrowserWindow,
};

// Load original asar
require("../_app.asar");

package.json

{
  "main": "index.js",
  "name": "discord"
}

preload.js

const electron = require("electron");

// Patch preload electron to polyfill the now extinct desktopCapturer
const electronPath = require.resolve("electron");
delete require.cache[electronPath].exports;
require.cache[electronPath].exports = {
  ...electron,
  desktopCapturer: {
    getSources: (opts) => electron.ipcRenderer.invoke("DAE_GET_STREAM_SOURCES", opts),
  },
};

// Load Discord's own preload script now
require(process.env.DISCORD_PRELOAD);