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node_modules/lodash/_baseIsEqualDeep.js

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+var Stack = require('./_Stack'),
+    equalArrays = require('./_equalArrays'),
+    equalByTag = require('./_equalByTag'),
+    equalObjects = require('./_equalObjects'),
+    getTag = require('./_getTag'),
+    isArray = require('./isArray'),
+    isBuffer = require('./isBuffer'),
+    isTypedArray = require('./isTypedArray');
+
+/** Used to compose bitmasks for value comparisons. */
+var COMPARE_PARTIAL_FLAG = 1;
+
+/** `Object#toString` result references. */
+var argsTag = '[object Arguments]',
+    arrayTag = '[object Array]',
+    objectTag = '[object Object]';
+
+/** Used for built-in method references. */
+var objectProto = Object.prototype;
+
+/** Used to check objects for own properties. */
+var hasOwnProperty = objectProto.hasOwnProperty;
+
+/**
+ * A specialized version of `baseIsEqual` for arrays and objects which performs
+ * deep comparisons and tracks traversed objects enabling objects with circular
+ * references to be compared.
+ *
+ * @private
+ * @param {Object} object The object to compare.
+ * @param {Object} other The other object to compare.
+ * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
+ * @param {Function} customizer The function to customize comparisons.
+ * @param {Function} equalFunc The function to determine equivalents of values.
+ * @param {Object} [stack] Tracks traversed `object` and `other` objects.
+ * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
+ */
+function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
+  var objIsArr = isArray(object),
+      othIsArr = isArray(other),
+      objTag = objIsArr ? arrayTag : getTag(object),
+      othTag = othIsArr ? arrayTag : getTag(other);
+
+  objTag = objTag == argsTag ? objectTag : objTag;
+  othTag = othTag == argsTag ? objectTag : othTag;
+
+  var objIsObj = objTag == objectTag,
+      othIsObj = othTag == objectTag,
+      isSameTag = objTag == othTag;
+
+  if (isSameTag && isBuffer(object)) {
+    if (!isBuffer(other)) {
+      return false;
+    }
+    objIsArr = true;
+    objIsObj = false;
+  }
+  if (isSameTag && !objIsObj) {
+    stack || (stack = new Stack);
+    return (objIsArr || isTypedArray(object))
+      ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)
+      : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
+  }
+  if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
+    var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
+        othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');
+
+    if (objIsWrapped || othIsWrapped) {
+      var objUnwrapped = objIsWrapped ? object.value() : object,
+          othUnwrapped = othIsWrapped ? other.value() : other;
+
+      stack || (stack = new Stack);
+      return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
+    }
+  }
+  if (!isSameTag) {
+    return false;
+  }
+  stack || (stack = new Stack);
+  return equalObjects(object, other, bitmask, customizer, equalFunc, stack);
+}
+
+module.exports = baseIsEqualDeep;