soundbirder/utils/choices.js

/**
 * Get a random selection from an array.
 * 
 * @param {Array} array
 * @param {Number} number 
 * @returns `number` random elements from the array
 */
function choices(array, number) {
    const result = [];
    for (let i = 0; i < number; i++) {
        let c = choice(array);
        if (result.includes(c)) {
            i--;
        } else {
            result.push(c);
        }
    }
    return result;
}

/**
 * Get a random element from an array.
 * 
 * @param {Array} array 
 * @returns a random element from the array
 */
function choice(array) {
    return array[Math.floor(Math.random() * array.length)];
}

module.exports = {
    choices,
    choice
}