Fix decorator in typescript targeting ES3 (#333)
Fix decorator in typescript targeting ES3 (#333)

andykog/mobx,mweststrate/MOBservable,mobxjs/mobx,mweststrate/MOBservable,mweststrate/MOBservable,andykog/mobservable,mobxjs/mobx,andykog/mobservable,andykog/mobx,mobxjs/mobx,mobxjs/mobx