Bump to v4.0.0.

internal/initCloneByTag.js

@@ -1,11 +1,14 @@
-define(['./bufferClone'], function(bufferClone) {
+define(['./cloneBuffer', './cloneMap', './cloneRegExp', './cloneSet', './cloneSymbol', './cloneTypedArray'], function(cloneBuffer, cloneMap, cloneRegExp, cloneSet, cloneSymbol, cloneTypedArray) {
 
   /** `Object#toString` result references. */
   var boolTag = '[object Boolean]',
       dateTag = '[object Date]',
+      mapTag = '[object Map]',
       numberTag = '[object Number]',
       regexpTag = '[object RegExp]',
-      stringTag = '[object String]';
+      setTag = '[object Set]',
+      stringTag = '[object String]',
+      symbolTag = '[object Symbol]';
 
   var arrayBufferTag = '[object ArrayBuffer]',
       float32Tag = '[object Float32Array]',
@@ -18,9 +21,6 @@ define(['./bufferClone'], function(bufferClone) {
       uint16Tag = '[object Uint16Array]',
       uint32Tag = '[object Uint32Array]';
 
-  /** Used to match `RegExp` flags from their coerced string values. */
-  var reFlags = /\w*$/;
-
   /**
    * Initializes an object clone based on its `toStringTag`.
    *
@@ -37,7 +37,7 @@ define(['./bufferClone'], function(bufferClone) {
     var Ctor = object.constructor;
     switch (tag) {
       case arrayBufferTag:
-        return bufferClone(object);
+        return cloneBuffer(object);
 
       case boolTag:
       case dateTag:
@@ -46,18 +46,24 @@ define(['./bufferClone'], function(bufferClone) {
       case float32Tag: case float64Tag:
       case int8Tag: case int16Tag: case int32Tag:
       case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:
-        var buffer = object.buffer;
-        return new Ctor(isDeep ? bufferClone(buffer) : buffer, object.byteOffset, object.length);
+        return cloneTypedArray(object, isDeep);
+
+      case mapTag:
+        return cloneMap(object);
 
       case numberTag:
       case stringTag:
         return new Ctor(object);
 
       case regexpTag:
-        var result = new Ctor(object.source, reFlags.exec(object));
-        result.lastIndex = object.lastIndex;
+        return cloneRegExp(object);
+
+      case setTag:
+        return cloneSet(object);
+
+      case symbolTag:
+        return cloneSymbol(object);
     }
-    return result;
   }
 
   return initCloneByTag;