tests/optimizer/JSDCE-hasOwnProperty.js - external/github.com/kripken/emscripten - Git at Google

 function hasOwnProperty(obj, prop) {
   return Object.prototype.hasOwnProperty.call(obj, prop);
 }

 if (hasOwnProperty({}, 'prop_name')) {
   console.log('yeah');
 }
	function hasOwnProperty(obj, prop) {
	return Object.prototype.hasOwnProperty.call(obj, prop);
	}

	if (hasOwnProperty({}, 'prop_name')) {
	console.log('yeah');
	}