Month: September 2018

Question: what does the code below do?

export function compact(array: any[]) {
    var index = -1,
        length = array === null ? 0 : array.length,
        resIndex = 0,
        result = [];

    while (++index < length) {
        var value = array[index];
        if (value) {
            result[resIndex++] = value;
        }
    }
    return result;
}