How to detect a keypress event inside a function? Nodejs

Question

How can a keypress be detected only inside a function and not on all code? I have this code:

async function sellFunction() {

    let i = 0;
    let handle = setInterval(function() {
        logUpdate("Hello" + i++)
    }, 100);
    gkm.events.on('key.*', async(data) => {
        if (gkm.events.event === 'key.released' && (data[0] == 'A' || data[0] == 'B' || data[0] == 'C' || data[0] == 'D' || data[0] == 'F')) {
            clearInterval(handle);
            gkm.events.removeAllListeners();
            await init();
        }
    });

}

The problem with this is that this key event is being detected even if im in another function.