const { ipcRenderer } = require('electron') document.addEventListener('DOMContentLoaded', (event) => { var outerFrame = document.getElementById('outer-frame') if (outerFrame) { outerFrame.onload = function () { var pdframe = outerFrame.contentWindow.document.getElementById('pdf-frame') if (pdframe) { pdframe.contentWindow.addEventListener('pdf-loaded', (event) => { ipcRenderer.send('pdf-loaded', event.detail) }) } } } })