I thought that I understand closures, but this example made me confused.

function f() {
    let x = 1;

    const g = () => {
        console.log(x);
    }
    x = 100;

    g();
}

f()

I think that the result should be 1, but it is 100. I thought that g in the moment of declaration should take x that exists in outer scope. But it took x value after reassignment. Why is it working like this? I know that you could consider it as a duplicate, but that is just how I understood closures, so please do not link other stack posts. I would be delighted to see some explanation.

Source: Ask Javascript Questions