/**
 * Source: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set#implementing_basic_set_operations
 */
/**
 * returns intersection of two sets
 */
export function intersection(setA, setB) {
    const _intersection = new Set();
    for (const elem of setB) {
        if (setA.has(elem)) {
            _intersection.add(elem);
        }
    }
    return _intersection;
}
/**
 * returns union of two sets
 */
export function union(setA, setB) {
    const _union = new Set(setA);
    for (const elem of setB) {
        _union.add(elem);
    }
    return _union;
}
/**
 * returns difference of two sets
 */
export function difference(setA, setB) {
    const _difference = new Set(setA);
    for (const elem of setB) {
        _difference.delete(elem);
    }
    return _difference;
}