Function compareSmallSets

lib/internal/util/comparisons.js:724–740

(a, b, val, iteratorB, mode, memo)

}

function compareSmallSets(a, b, val, iteratorB, mode, memo) {
  const iteratorA = a.values();
  const firstA = iteratorA.next().value;
  const first = innerDeepEqual(firstA, val, mode, memo);
  if (first) {
    if (b.size === 1) { // Partial mode && a.size === 1 || b.size === 1
      return true;
    }
    const secondA = iteratorA.next().value;
    return b.has(secondA) || innerDeepEqual(secondA, iteratorB.next().value, mode, memo);
  }
  return a.size !== 1 && innerDeepEqual(iteratorA.next().value, val, mode, memo) && (
    b.size === 1 || // Partial mode
    b.has(firstA) || // Primitive or reference equal
    innerDeepEqual(firstA, iteratorB.next().value, mode, memo)
  );
}

function setEquiv(a, b, mode, memo) {
  // This is a lazily initiated Set of entries which have to be compared