Function equalArrays

test-app/public/sinon.js:16244–16303

* A specialized version of `baseIsEqualDeep` for arrays with support for * partial deep comparisons. * * @private * @param {Array} array The array to compare. * @param {Array} other The other array to compare. * @param {number} bitmask The bitmas

(array, other, bitmask, customizer, equalFunc, stack)

         * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
         */
        function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
          var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
              arrLength = array.length,
              othLength = other.length;
    
          if (arrLength != othLength && !(isPartial && othLength > arrLength)) {
            return false;
          }
          // Assume cyclic values are equal.
          var stacked = stack.get(array);
          if (stacked && stack.get(other)) {
            return stacked == other;
          }
          var index = -1,
              result = true,
              seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;
    
          stack.set(array, other);
          stack.set(other, array);
    
          // Ignore non-index properties.
          while (++index < arrLength) {
            var arrValue = array[index],
                othValue = other[index];
    
            if (customizer) {
              var compared = isPartial
                ? customizer(othValue, arrValue, index, other, array, stack)
                : customizer(arrValue, othValue, index, array, other, stack);
            }
            if (compared !== undefined) {
              if (compared) {
                continue;
              }
              result = false;
              break;
            }
            // Recursively compare arrays (susceptible to call stack limits).
            if (seen) {
              if (!arraySome(other, function(othValue, othIndex) {
                    if (!cacheHas(seen, othIndex) &&
                        (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
                      return seen.push(othIndex);
                    }
                  })) {
                result = false;
                break;
              }
            } else if (!(
                  arrValue === othValue ||
                    equalFunc(arrValue, othValue, bitmask, customizer, stack)
                )) {
              result = false;
              break;
            }
          }
          stack['delete'](array);
          stack['delete'](other);