examples/userlist/dist/bundle.js
function getType(fn) {
	  var type = fn !== null && fn !== undefined ? fn.type ? fn.type : fn : null;
	  var match = type && type.toString().match(FN_MATCH_REGEXP);
	  return match && match[1];
	}
function getType(fn) {
	  var type = fn !== null && fn !== undefined ? fn.type ? fn.type : fn : null;
	  var match = type && type.toString().match(FN_MATCH_REGEXP);
	  return match && match[1];
	}
https://github.com/vuejs/vue/blob/dev/src/core/util/props.js#L177