How to display pdf on canvas using angular7 and fabric js

Finally I was able to fix this...I have used pdfjsLib and I have imported in my ts file (import * from 'pdfjs-dist/build/pdf' as pdfjsLib ;)

 public src="/assets/myPhotos.pdf";
 showPdf(){
pdfjsLib.getDocument(this.src).then(doc =>{

 // console.log("this file has "+ doc._pdfInfo.numPages+ "pages");
  doc.getPage(1).then(page => {
    var myCanvas =  <HTMLCanvasElement>document.getElementById("my_canvas");
    var context = myCanvas.getContext("2d");
    var scale = 1.5;
    var viewport = page.getViewport(scale);
    myCanvas.width = viewport.width;
    myCanvas.height = viewport.height;

    page.render({
      canvasContext : context,
      viewport : viewport
    })
  })
});

}