michael@0: if (getBuildConfiguration().parallelJS) {
michael@0:   var map_toSource_called = false;
michael@0:   var mapPar_toSource_called = false;
michael@0: 
michael@0:   Array.prototype.mapPar.toSource = function() {
michael@0:     mapPar_toSource_called = true;
michael@0:   };
michael@0: 
michael@0:   Array.prototype.map.toSource = function() {
michael@0:     map_toSource_called = true;
michael@0:   };
michael@0: 
michael@0:   try { new Array.prototype.mapPar; } catch (e) {}
michael@0:   try { new Array.prototype.map; } catch (e) {}
michael@0: 
michael@0:   assertEq(map_toSource_called, mapPar_toSource_called);
michael@0: }