typescript - How to implement OnInit and OnChanges on same component with type safety -

one of things typescript type safety , use consistently.

typescript not support multiple inheritance, how can extend angular 2 component class oninit , onchanges @ same time?

i know works without declaring inheritance code without squiggly lines.

oninit , onchanges not classes interfaces, components don't inherit implement interfaces.

as class can implements many interfaces needs, there no problem implementing both oninit , onchanges interfaces on same component.

for example:

class foocomponent implements oninit, onchanges { } 

for more information, have @ angular lifecycle hooks guide.