cliente.ts

onSubmit(form) {
        if (!this.saving) {
            for (const control in form.controls) {
                if (form.controls.hasOwnProperty(control)) {
                    form.controls[control].markAsTouched();
                    form.controls[control].markAsDirty();
                }
            }

            if (!form.valid) {
                this.element.nativeElement.querySelectorAll('form .ng-invalid')[0].focus();
                return false;
            }

            this.saving = true;

            this.clienteService.cadastrar(this.info).subscribe(data => {
                this.saving = false;
                UiSnackbar.show({
                    text: `Cliente cadastrado com sucesso.`
                });
                this.router.navigate(['/cliente'], { replaceUrl: true });
            }, e => {
                this.saving = false;
                if(e.error.statusCode == 406){
                    form.controls.cpf.setErrors({ duplicate: true });
                    this.element.nativeElement.querySelector('#cpf').focus();
                } else {
                    UiSnackbar.show({
                        text: 'Ocorreu um erro interno, tente novamente mais tarde.'
                    });
                }
            });
        }
    }