lib/util/shuffle.js

/**
 * Randomize array element order in-place.
 * Using Durstenfeld shuffle algorithm.
 * @memberof module:util
 */
const shuffle = (array) => {
    for (let i = array.length - 1; i > 0; i--) {
        const j = Math.floor(Math.random() * (i + 1));
        const temp = array[i];
        // eslint-disable-next-line no-param-reassign
        array[i] = array[j];
        // eslint-disable-next-line no-param-reassign
        array[j] = temp;
    }
};

module.exports = shuffle;