Implement %TypedArray%.{fill,find,findIndex}

src/harmony-typedarray.js

Index: src/harmony-typedarray.js
diff --git a/src/harmony-typedarray.js b/src/harmony-typedarray.js
index c33e08b93ce3bcee4aa04429e407024fb4c04b07..3c4c4a40fedd69f97bc46813fd624edcf3f93f7b 100644
--- a/src/harmony-typedarray.js
+++ b/src/harmony-typedarray.js
@@ -59,6 +59,37 @@ function TypedArrayForEach(f, receiver) {
 }
 %FunctionSetLength(TypedArrayForEach, 1);
 
+// ES6 draft 04-05-14 section 22.2.3.8
+function TypedArrayFill(value, start , end) {
+  if (!%IsTypedArray(this)) throw MakeTypeError(kNotTypedArray);
+
+  var length = %_TypedArrayGetLength(this);
+
+  return $innerArrayFill(value, start, end, this, length);
+}
+%FunctionSetLength(TypedArrayFill, 1);
+
+// ES6 draft 07-15-13, section 22.2.3.10
+function TypedArrayFind(predicate, thisArg) {
+  if (!%IsTypedArray(this)) throw MakeTypeError(kNotTypedArray);
+
+  var length = %_TypedArrayGetLength(this);
+
+  return $innerArrayFind(predicate, thisArg, this, length);
+}
+%FunctionSetLength(TypedArrayFind, 1);
+
+// ES6 draft 07-15-13, section 22.2.3.11
+function TypedArrayFindIndex(predicate, thisArg) {
+  if (!%IsTypedArray(this)) throw MakeTypeError(kNotTypedArray);
+
+  var length = %_TypedArrayGetLength(this);
+
+  return $innerArrayFindIndex(predicate, thisArg, this, length);
+}
+%FunctionSetLength(TypedArrayFindIndex, 1);
+
+
 // ES6 draft 08-24-14, section 22.2.2.2
 function TypedArrayOf() {
   var length = %_ArgumentsLength();
@@ -79,7 +110,10 @@ macro EXTEND_TYPED_ARRAY(NAME)
   $installFunctions(GlobalNAME.prototype, DONT_ENUM, [
     "copyWithin", TypedArrayCopyWithin,
     "every", TypedArrayEvery,
-    "forEach", TypedArrayForEach
+    "forEach", TypedArrayForEach,
+    "find", TypedArrayFind,
+    "findIndex", TypedArrayFindIndex,
+    "fill", TypedArrayFill
   ]);
 endmacro