Download File from URL.ts

public exportFile(filename: string, type: string, data: any) {
    const blob = new Blob([data], {type: type});
    this.exportBlob(blob, filename);
  }

  public exportBlob(blob: Blob, filename: string) {
    if (window.navigator.msSaveOrOpenBlob) {
      window.navigator.msSaveBlob(blob, filename);
    } else {
      const elem = window.document.createElement('a');
      elem.href = window.URL.createObjectURL(blob);
      elem.download = filename;
      document.body.appendChild(elem);
      elem.click();
      document.body.removeChild(elem);
    }
  }

  public downloadFile(url: string, filename: string, type: string) {
    const self = this;
    const oReq = new XMLHttpRequest();
    oReq.addEventListener('load', function (response) {
      console.log(response);
      const blob = new Blob([oReq.response], {type: type});
      self.exportBlob(blob, filename);
    });
    oReq.responseType = 'arraybuffer';
    oReq.open('GET', url);
    oReq.send();
  }