Make new Harmony constructors subclassing-friendly

src/typedarray.js

Index: src/typedarray.js
diff --git a/src/typedarray.js b/src/typedarray.js
index 7bd16f670b4425b88319676a52374c480b5b2477..8637f6efa2363aea874c2d233a3ffd587d28e3d9 100644
--- a/src/typedarray.js
+++ b/src/typedarray.js
@@ -85,17 +85,13 @@ function CreateTypedArrayConstructor(name, elementSize, arrayId, constructor) {
   }
 
   return function (arg1, arg2, arg3) {
-    if (%_IsConstructCall()) {
-      if (IS_ARRAYBUFFER(arg1)) {
-        ConstructByArrayBuffer(this, arg1, arg2, arg3);
-      } else if (IS_NUMBER(arg1) || IS_STRING(arg1) ||
-                 IS_BOOLEAN(arg1) || IS_UNDEFINED(arg1)) {
-        ConstructByLength(this, arg1);
-      } else {
-        ConstructByArrayLike(this, arg1);
-      }
+    if (IS_ARRAYBUFFER(arg1)) {
+      ConstructByArrayBuffer(this, arg1, arg2, arg3);
+    } else if (IS_NUMBER(arg1) || IS_STRING(arg1) ||
+               IS_BOOLEAN(arg1) || IS_UNDEFINED(arg1)) {
+      ConstructByLength(this, arg1);
     } else {
-      throw MakeTypeError("constructor_not_function", [name])
+      ConstructByArrayLike(this, arg1);
     }
   }
 }
@@ -287,24 +283,20 @@ SetupTypedArray(9, "Uint8ClampedArray", global.Uint8ClampedArray, 1);
 var $DataView = global.DataView;
 
 function DataViewConstructor(buffer, byteOffset, byteLength) { // length = 3
-  if (%_IsConstructCall()) {
-    if (!IS_ARRAYBUFFER(buffer)) {
-      throw MakeTypeError('data_view_not_array_buffer', []);
-    }
-    var bufferByteLength = %ArrayBufferGetByteLength(buffer);
-    var offset = ToPositiveInteger(byteOffset, 'invalid_data_view_offset');
-    if (offset > bufferByteLength) {
-      throw MakeRangeError('invalid_data_view_offset');
-    }
-    var length = IS_UNDEFINED(byteLength) ?
-      bufferByteLength - offset : TO_INTEGER(byteLength);
-    if (length < 0 || offset + length > bufferByteLength) {
-      throw new MakeRangeError('invalid_data_view_length');
-    }
-    %DataViewInitialize(this, buffer, offset, length);
-  } else {
-    throw MakeTypeError('constructor_not_function', ["DataView"]);
+  if (!IS_ARRAYBUFFER(buffer)) {
+    throw MakeTypeError('data_view_not_array_buffer', []);
+  }
+  var bufferByteLength = %ArrayBufferGetByteLength(buffer);
+  var offset = ToPositiveInteger(byteOffset, 'invalid_data_view_offset');
+  if (offset > bufferByteLength) {
+    throw MakeRangeError('invalid_data_view_offset');
+  }
+  var length = IS_UNDEFINED(byteLength) ?
+    bufferByteLength - offset : TO_INTEGER(byteLength);
+  if (length < 0 || offset + length > bufferByteLength) {
+    throw new MakeRangeError('invalid_data_view_length');
   }
+  %DataViewInitialize(this, buffer, offset, length);
 }
 
 function DataViewGetBuffer() {