ipcmodification.js

const electron = require('electron')
const countdown = require('./countdown')
const app = electron.app
const BrowserWindow = electron.BrowserWindow
const ipc = electron.ipcMain

let mainWindow

app.on('ready', _ => {
    mainWindow = new BrowserWindow({
        icon:'tuxnp.png',
        height: 400,
        width: 400
    })
    mainWindow.on('closed', _ =>{
        console.log('Closed the Window')
        mainWindow = null
    })
})
ipc.on('countdown-start', _ => {
    countdown(count => {
        mainWindow.webContents.send('countdown', count)
    })
})