Function objectType

testing/qunit-2.9.2.js:238–270

(obj)

  }

  function objectType(obj) {
  	if (typeof obj === "undefined") {
  		return "undefined";
  	}

  	// Consider: typeof null === object
  	if (obj === null) {
  		return "null";
  	}

  	var match = toString.call(obj).match(/^\[object\s(.*)\]$/),
  	    type = match && match[1];

  	switch (type) {
  		case "Number":
  			if (isNaN(obj)) {
  				return "nan";
  			}
  			return "number";
  		case "String":
  		case "Boolean":
  		case "Array":
  		case "Set":
  		case "Map":
  		case "Date":
  		case "RegExp":
  		case "Function":
  		case "Symbol":
  			return type.toLowerCase();
  		default:
  			return typeof obj === "undefined" ? "undefined" : _typeof(obj);
  	}
  }

  // Safe object type checking
  function is(type, obj) {