如何使这个函数更小？

Question

我想通过删除发送到 htttp.post 的变量并将它们放入数组来优化以下函数。这可能吗？将变量放在普通数组中，但出现布尔错误。  getUsers(val) {    this.spinner.show();    const options = {      headers: new HttpHeaders().set('x-access-token', this.currentUser.token),      responseType: 'blob' as 'json'    };    return this.http.post(this.apiRoot + val, { status: this.userAdvanceSearch.status, email: this.userAdvanceSearch.email, filterWithin: this.filterQuery, name: this.userAdvanceSearch.name, userTypeNo: this.authenticationService.getCurrentUserType().userTypeNo }, options).subscribe((res: any) => {      val === 'pdf' ? this.blob = new Blob([res], { type: 'application/pdf' }) : this.blob = new Blob([res], { type: 'text' });      const downloadURL = window.URL.createObjectURL(res);      const link = document.createElement('a');      link.href = downloadURL;      val === 'pdf' ? link.download = 'users.pdf' : link.download = 'users.csv';      link.click();      window.URL.revokeObjectURL(downloadURL);      this.spinner.hide();    });  }这按原样工作，但如果可能的话，我希望它更干净、更短。