export default function filterInPlace<T>(a: T[], condition: (value: T, index: number, array: T[]) => boolean): T[] {
    let i = 0, j = 0;

    while (i < a.length) {
        const val = a[i];
        if (condition(val, i, a)) a[j++] = val;
        i++;
    }

    a.length = j;
    return a;
}