Add a pretty printer to improve the error message non-function calls

src/runtime.js

 // Copyright 2006-2008 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.
 
 // This files contains runtime support implemented in JavaScript.
 
 // CAUTION: Some of the functions specified in this file are called
 // directly from compiled code. These are the functions with names in
 // ALL CAPS. The compiled code passes the first argument in 'this'.
 
@@ skipping 359 matching lines @@
 function FILTER_KEY(key) {
   var string = %ToName(key);
   if (%HasProperty(this, string)) return string;
   return 0;
 }
 
 
 function CALL_NON_FUNCTION() {
   var delegate = %GetFunctionDelegate(this);
   if (!IS_FUNCTION(delegate)) {
-    throw %MakeTypeError('called_non_callable', [typeof this]);
+    var callsite = %RenderCallSite();
+    if (callsite == "") callsite = typeof this;
+    throw %MakeTypeError('called_non_callable', [callsite]);
   }
   return %Apply(delegate, this, arguments, 0, %_ArgumentsLength());
 }
 
 
 function CALL_NON_FUNCTION_AS_CONSTRUCTOR() {
   var delegate = %GetConstructorDelegate(this);
   if (!IS_FUNCTION(delegate)) {
-    throw %MakeTypeError('called_non_callable', [typeof this]);
+    var callsite = %RenderCallSite();
+    if (callsite == "") callsite = typeof this;
+    throw %MakeTypeError('called_non_callable', [callsite]);
   }
   return %Apply(delegate, this, arguments, 0, %_ArgumentsLength());
 }
 
 
 function CALL_FUNCTION_PROXY() {
   var arity = %_ArgumentsLength() - 1;
   var proxy = %_Arguments(arity);  // The proxy comes in as an additional arg.
   var trap = %GetCallTrap(proxy);
   return %Apply(trap, this, arguments, 0, arity);
@@ skipping 283 matching lines @@
   return i;
 }
 
 
 // NOTE: Setting the prototype for Array must take place as early as
 // possible due to code generation for array literals.  When
 // generating code for a array literal a boilerplate array is created
 // that is cloned when running the code.  It is essential that the
 // boilerplate gets the right prototype.
 %FunctionSetPrototype($Array, new $Array(0));