react native - getInitialState not working in Movies Tutorial -

trying follow react native tutorial movies app. using ios or android goes fine until try introduce state component. tutorial not use es6 classes hello world app , gets confusing.

the tutorial says add getintialstate breaks assume due using es6 classes, using constructor not seem work wanted know correct way proceed?

tutorial

getinitialstate: function() {   return {     movies: null,   }; }, 

es6 equivalent?

constructor(props) {   super(props);   this.state = {     movies: null,   }; }, 

do not use comma (,) after methods in class!

class listapp extends component {   constructor(props){     super(props);     this.state = { loaded: false };   } //, <--- no comma!    ...   ...   ... }