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[yaffs-website] / node_modules / uncss / node_modules / lodash / internal / equalByTag.js

diff --git a/node_modules/uncss/node_modules/lodash/internal/equalByTag.js b/node_modules/uncss/node_modules/lodash/internal/equalByTag.js
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+var Symbol = require('./Symbol'),
+    Uint8Array = require('./Uint8Array'),
+    mapToArray = require('./mapToArray'),
+    setToArray = require('./setToArray');
+
+/** Used to compose bitmasks for comparison styles. */
+var UNORDERED_COMPARE_FLAG = 1,
+    PARTIAL_COMPARE_FLAG = 2;
+
+/** `Object#toString` result references. */
+var boolTag = '[object Boolean]',
+    dateTag = '[object Date]',
+    errorTag = '[object Error]',
+    mapTag = '[object Map]',
+    numberTag = '[object Number]',
+    regexpTag = '[object RegExp]',
+    setTag = '[object Set]',
+    stringTag = '[object String]',
+    symbolTag = '[object Symbol]';
+
+var arrayBufferTag = '[object ArrayBuffer]';
+
+/** Used to convert symbols to primitives and strings. */
+var symbolProto = Symbol ? Symbol.prototype : undefined,
+    symbolValueOf = Symbol ? symbolProto.valueOf : undefined;
+
+/**
+ * A specialized version of `baseIsEqualDeep` for comparing objects of
+ * the same `toStringTag`.
+ *
+ * **Note:** This function only supports comparing values with tags of
+ * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
+ *
+ * @private
+ * @param {Object} object The object to compare.
+ * @param {Object} other The other object to compare.
+ * @param {string} tag The `toStringTag` of the objects to compare.
+ * @param {Function} equalFunc The function to determine equivalents of values.
+ * @param {Function} [customizer] The function to customize comparisons.
+ * @param {number} [bitmask] The bitmask of comparison flags. See `baseIsEqual` for more details.
+ * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
+ */
+function equalByTag(object, other, tag, equalFunc, customizer, bitmask) {
+  switch (tag) {
+    case arrayBufferTag:
+      if ((object.byteLength != other.byteLength) ||
+          !equalFunc(new Uint8Array(object), new Uint8Array(other))) {
+        return false;
+      }
+      return true;
+
+    case boolTag:
+    case dateTag:
+      // Coerce dates and booleans to numbers, dates to milliseconds and booleans
+      // to `1` or `0` treating invalid dates coerced to `NaN` as not equal.
+      return +object == +other;
+
+    case errorTag:
+      return object.name == other.name && object.message == other.message;
+
+    case numberTag:
+      // Treat `NaN` vs. `NaN` as equal.
+      return (object != +object) ? other != +other : object == +other;
+
+    case regexpTag:
+    case stringTag:
+      // Coerce regexes to strings and treat strings primitives and string
+      // objects as equal. See https://es5.github.io/#x15.10.6.4 for more details.
+      return object == (other + '');
+
+    case mapTag:
+      var convert = mapToArray;
+
+    case setTag:
+      var isPartial = bitmask & PARTIAL_COMPARE_FLAG;
+      convert || (convert = setToArray);
+
+      // Recursively compare objects (susceptible to call stack limits).
+      return (isPartial || object.size == other.size) &&
+        equalFunc(convert(object), convert(other), customizer, bitmask | UNORDERED_COMPARE_FLAG);
+
+    case symbolTag:
+      return !!Symbol && (symbolValueOf.call(object) == symbolValueOf.call(other));
+  }
+  return false;
+}
+
+module.exports = equalByTag;