Angular e mercado pago

Para o pagamento de boleto, pelo que entendi não precisa de fazer nada no frontend. Mas para cartão é preciso, conforme este link:

https://www.mercadopago.com.br/developers/pt/guides/online-payments/checkout-api/receiving-payment-by-card/

No código fiz assim:

salvar(): void {
    if(this.cartao) {
      this.window['Mercadopago'].getPaymentMethod({
        'bin': this.quartoFormGroup.controls.numeroCartao.value.substring(0, 7).replace('\\.', '')
      }, this.setPaymentMethod);
    }
    const registro = this.criarFormulario();
    this.publicoService.create(registro).subscribe(
      () => {
        //this.stateStorageService.clearPlanoVenda();
        //this.router.navigate(['/autenticacao']);
      },
      (error: any) => {
        super.mostrarError(error);
      }
    );
  }

  setPaymentMethod(status: any, response: any): void {
    if (status === 200) {
      const paymentMethod = response[0];
      this.quartoFormGroup.controls.paymentMethodId.setValue(paymentMethod.id);
      if(paymentMethod.additional_info_needed.includes('issuer_id')) {
        this.getIssuers(paymentMethod.id);
      } else {
        this.installments(
          paymentMethod.id,
          this.quartoFormGroup.controls.transactionAmount.value,
          null
        );
      }
    } else {
      alert(`Informação do método de pagamento: ${response}`);
    }
  }

  getIssuers(paymentMethodId: any): void {
    this.window['Mercadopago'].getIssuers(
      paymentMethodId,
      this.setIssuers
    );
  }

  setIssuers(status: any, response: any): void {
    if (status === 200) {
      let issuerSelect: any;// = document.getElementById('issuer');
      response.forEach((issuer: any) => {
        const opt = document.createElement('option');
        opt.text = issuer.name;
        opt.value = issuer.id;
        //issuerSelect.appendChild(opt);
      });
      this.installments(
        this.quartoFormGroup.controls.paymentMethodId.value,
        this.quartoFormGroup.controls.transactionAmount.value,
        issuerSelect.value
      );
    } else {
      alert(`issuers method info error: ${response}`);
    }
  }

  installments(paymentMethodId: any, transactionAmount: any, issuerId: any): void {
    this.window['Mercadopago'].getInstallments({
      'payment_method_id': paymentMethodId,
      'amount': transactionAmount,
      'issuer_id': issuerId ? issuerId : undefined
    },
    this.setInstallments);
  }

  setInstallments(status: any, response: any): void {
    if (status === 200) {
      this.quartoFormGroup.controls.parcelaCartao.value;
      response[0].payer_costs.forEach((payerCost: any) => {
        const opt = document.createElement('option');
        opt.text = payerCost.recommended_message;
        opt.value = payerCost.installments;
        this.quartoFormGroup.controls.parcelaCartao.setValue(opt);
      });
    } else {
      alert(`installments method info error: ${response}`);
    }
  }

Fiquei na dúvida como fazer isso no angular ?

doSubmit = false;
document.getElementById('paymentForm').addEventListener('submit', getCardToken);
function getCardToken(event){
   event.preventDefault();
   if(!doSubmit){
       let $form = document.getElementById('paymentForm');
       window.Mercadopago.createToken($form, setCardTokenAndPay);
       return false;
   }
};

function setCardTokenAndPay(status, response) {
   if (status == 200 || status == 201) {
       let form = document.getElementById('paymentForm');
       let card = document.createElement('input');
       card.setAttribute('name', 'token');
       card.setAttribute('type', 'hidden');
       card.setAttribute('value', response.id);
       form.appendChild(card);
       doSubmit=true;
       form.submit();
   } else {
       alert("Verify filled data!\n"+JSON.stringify(response, null, 4));
   }
};

Coloco o breakpoint aqui ‘bin’: this.quartoFormGroup.controls.numeroCartao.value.substring(0, 7).replace(’\.’, ‘’) , ai ele para.

Mas não para nesta parte:

<strong>setPaymentMethod(status: any, response: any): void {

if (status === 200) {</strong>

Como fazer funcionar esta parte e o que está faltando ??