/*EXPECTED woof mew woof mew */ interface Say { function say() : void; } class Dog implements Say { override function say() : void { log "woof"; } } class Cat implements Say { override function say() : void { log "mew"; } } class _Main { static function main(args : string[]) : void { new Dog().say(); new Cat().say(); var say : Say = new Dog(); say.say(); say = new Cat(); say.say(); } }