Function partialArrayEquiv

lib/internal/util/comparisons.js:945–965

(a, b, mode, memos)

}

function partialArrayEquiv(a, b, mode, memos) {
  let aPos = 0;
  for (let i = 0; i < b.length; i++) {
    let isSparse = b[i] === undefined && !hasOwn(b, i);
    if (isSparse) {
      return partialSparseArrayEquiv(a, b, mode, memos, aPos, i);
    }
    while (!(isSparse = a[aPos] === undefined && !hasOwn(a, aPos)) &&
           !innerDeepEqual(a[aPos], b[i], mode, memos)) {
      aPos++;
      if (aPos > a.length - b.length + i) {
        return false;
      }
    }
    if (isSparse) {
      return partialSparseArrayEquiv(a, b, mode, memos, aPos, i);
    }
    aPos++;
  }
  return true;
}

function sparseArrayEquiv(a, b, mode, memos, i) {
  const keysA = ObjectKeys(a);