flasher.js/scripts/windows-installer.js

//Taken from Electron API Demos
//https://github.com/electron/electron-api-demos/blob/master/script/installer.js

const createWindowsInstaller = require('electron-winstaller').createWindowsInstaller;
const path = require('path');
const rimraf = require('rimraf');

deleteOutputFolder()
  .then(getInstallerConfig)
  .then(createWindowsInstaller)
  .catch((error) => {
    console.error(error.message || error)
    process.exit(1)
  })

function getInstallerConfig () {
  const rootPath = path.join(__dirname, '..')
  const outPath = path.join(rootPath, 'out')

  return Promise.resolve({
    appDirectory: path.join(outPath, 'flasher.js-win32-x64'),
    iconUrl: 'https://raw.githubusercontent.com/thingssdk/flasher.js/resources/icon.ico',
    loadingGif: path.join(rootPath, 'resources', 'loading.gif'),
    noMsi: true,
    outputDirectory: path.join(outPath, 'windows-installer'),
    setupExe: 'FlasherjsSetup.exe',
    setupIcon: path.join(rootPath, 'resources', 'icon.ico'),
    skipUpdateIcon: true
  });
}

function deleteOutputFolder () {
  return new Promise((resolve, reject) => {
    rimraf(path.join(__dirname, '..', 'out', 'windows-installer'), (error) => {
      error ? reject(error) : resolve()
    });
  });
}