Function isSubset

lib/util/SetHelpers.js:46–52

(bigSet, smallSet)

 * @returns {boolean} returns true if smallSet contains all elements inside of the bigSet
 */
const isSubset = (bigSet, smallSet) => {
	if (bigSet.size < smallSet.size) return false;
	for (const item of smallSet) {
		if (!bigSet.has(item)) return false;
	}
	return true;
};

/**
 * Returns found item.