TypedArray: Make byteOffset, byteLength, and length properties configurable

src/js/typedarray.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 (function(global, utils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
@@ skipping 809 matching lines @@
 // -------------------------------------------------------------------
 
 %FunctionSetPrototype(TypedArray, new GlobalObject());
 %AddNamedProperty(TypedArray.prototype,
                   "constructor", TypedArray, DONT_ENUM);
 utils.InstallFunctions(TypedArray, DONT_ENUM, [
   "from", TypedArrayFrom,
   "of", TypedArrayOf
 ]);
 utils.InstallGetter(TypedArray.prototype, "buffer", TypedArrayGetBuffer);
-utils.InstallGetter(TypedArray.prototype, "byteOffset", TypedArrayGetByteOffset,
-                    DONT_ENUM | DONT_DELETE);
+utils.InstallGetter(TypedArray.prototype, "byteOffset",
+                    TypedArrayGetByteOffset);
 utils.InstallGetter(TypedArray.prototype, "byteLength",
-                    TypedArrayGetByteLength, DONT_ENUM | DONT_DELETE);
-utils.InstallGetter(TypedArray.prototype, "length", TypedArrayGetLength,
-                    DONT_ENUM | DONT_DELETE);
+                    TypedArrayGetByteLength);
+utils.InstallGetter(TypedArray.prototype, "length", TypedArrayGetLength);
 utils.InstallGetter(TypedArray.prototype, toStringTagSymbol,
                     TypedArrayGetToStringTag);
 utils.InstallFunctions(TypedArray.prototype, DONT_ENUM, [
   "subarray", TypedArraySubArray,
   "set", TypedArraySet,
   "copyWithin", TypedArrayCopyWithin,
   "every", TypedArrayEvery,
   "fill", TypedArrayFill,
   "filter", TypedArrayFilter,
   "find", TypedArrayFind,
@@ skipping 133 matching lines @@
   "setUint32", DataViewSetUint32JS,
 
   "getFloat32", DataViewGetFloat32JS,
   "setFloat32", DataViewSetFloat32JS,
 
   "getFloat64", DataViewGetFloat64JS,
   "setFloat64", DataViewSetFloat64JS
 ]);
 
 })