Dmitry Tyvaniuk

const {shell} = require('electron');
shell.openItem(app.getAppPath() + '\\local\\my-file.bat');

const fib = (n) => {
    const buf = [0, 1];
    for (let i = 2; i <= n; i++) {
        buf[i % 2] += buf[(i + 1) % 2];
    }
    return buf[n % 2];
};