gistfile1.hx

class Test {
	static var stringThing = func(String, "Hello");
	static var intThing = func(Int, 12);
	static var floatThing = func(Float, 1.2);

	static function func<T>(type:Class<T>, value:T):String
	{
		return Type.getClassName(type) + ":" + Std.string(value);
	}

	public static function main() {
		trace("The string thing is: " + stringThing);
		trace("The int thing is: " + intThing);
		trace("The float thing is: " + floatThing);
	}
}

gistfile2.txt

$ haxe -js test.js Test.hx 
./Test.hx:2: characters 28-31 : #Int should be Class<Unknown<0>>
./Test.hx:2: characters 28-31 : { } should be Class<Unknown<0>>
./Test.hx:2: characters 28-31 : For function argument 'clazz'