fix busy filereader error

Author: Quentigus

projects/ngx-flow/src/lib/src.directive.ts

@@ -5,10 +5,11 @@ import { Transfer } from './transfer';
  selector: '[flowSrc]'
 })
 export class SrcDirective {
- protected fileReader = new FileReader();
+ protected fileReader;
 
  @Input()
  set flowSrc(transfer: Transfer) {
+ this.fileReader = new FileReader();
  this.fileReader.readAsDataURL(transfer.flowFile.file);
  this.fileReader.onload = (event: any) => {
  const url = event.target.result;