electron-openWindow.js

// @private
function openWindow (key, opts = {}) {
  const dontShow = opts.show === false
  opts = Object.assign({
    show: false,
    resizable: false
  }, opts)
  opts.webPreferences = Object.assign({
    nodeIntegration: false,
    preload
  }, opts.webPreferences)
  const win = new BrowserWindow(opts)
  wins[key] = win
  win.loadURL(fileURL(key))
  // win.webContents.on('did-finish-load', () => {
  win.on('ready-to-show', () => { // >= 1.2.3
    if (!dontShow) win.show()
  })
  win.on('closed', () => {
    delete wins[key]
  })
  return win
}
function fileURL (key) {
  const path = join(__dirname, `../window/${key}.html`)
  return `file://${path}`
}