how to import multiple javascript library to one object in angular 2+

Question

I have a working code for playing a video with flow player shown bellow html:-

<figure id="expose" class="expose-wrap" >
  <div class="exposed"></div>
</figure>

ts:-

import * as flowplayer from './flowplayer';
export class DetailpageComponent implements OnInit {
  OnInit(){
  flowplayer('#expose>.exposed', {
            clip: {
              sources: [
               {
                 type: 'application/x-mpegurl',
                 src: url.m3u8
               }]
            }
          })
  }
}

the above code is for playing hls video and it is working fine. but I need to play dash video(.mpd file). I order to do that I need to add one more library which is flowplayer obect in my packg

"flowplayer": "^7.2.5",
"flowplayer-dashjs": "github:flowplayer/flowplayer-mpegdash",

i have not able ti import flowplayer-dashjs libery in my component. Please help