function chooseWeightedRandom(items, weights) {
    let i;
    let length = weights.length;
    weights = [...weights];

    for (i = 0; i < length; i++) weights[i] += weights[i - 1] || 0;

    const random = Math.random() * weights[length - 1];

    for (i = 0; i < length; i++) if (weights[i] > random) break;

    return items[i];
};

module.exports = chooseWeightedRandom;