Angular2 and medium Editor

Question

i'm install MediumEditor and angular2-medium-editor, i follow the role who write in the website

https://github.com/codiak/angular2-medium-editor

but when i try to import this:

import { MediumEditorDirective } from 'angular2-medium-editor/medium-editor.directive.ts';

give me this error cannot import path with .ts, i try also with out .ts but don't work

it s anybody use this editor? why don't work thanks

Thanks for Help!