@electron-delta/updater/splash-test/main.js

True delta updater for windows

const { app } = require('electron');
const path = require('path');
const os = require('os');
const { getWindow, getStartURL, dispatchEvent } = require('../src/splash');
const { downloadFile, niceBytes } = require('../src/download');

const downloadURL = 'https://github.com/electron-delta/electron-sample-app/releases/download/v0.0.86/electron-sample-app-0.0.84-to-0.0.86-delta.exe';

let updaterWindow;
app.on('ready', () => {
  updaterWindow = getWindow();
  updaterWindow.loadURL(getStartURL());

  setTimeout(() => {
    console.log('checking for update');
    dispatchEvent(updaterWindow, 'checking-for-update');
  }, 1000);

  setTimeout(() => {
    console.log('update available');
    dispatchEvent(updaterWindow, 'update-available');
  }, 2000);

  setTimeout(async () => {
    await downloadFile(downloadURL, path.join(os.tmpdir(), `${Math.random()}.zip`), ({ percentage, transferred, total }) => {
      console.log(`downloading ${(transferred)}/${(total)} (${percentage}%)`);
      dispatchEvent(updaterWindow, 'download-progress', {
        percentage: parseFloat(percentage).toFixed(1),
        transferred: niceBytes(transferred),
        total: niceBytes(total),
      });
    });

    console.log('download complete');
    dispatchEvent(updaterWindow, 'update-downloaded');
  }, 3000);
});