从代码中手动触发ngx-2

以下代码可以在单击按钮时触发模式

<button type="button" class="btn btn-danger ml-3 trans-3"
        [swal]="swalDeleteConfig"
        (confirm)="deleteItem($event)">
    Delete
</button>

private swalDeleteConfig: SweetAlertOptions = {
    title: 'Are you sure you want to delete?',
    confirmButtonText: "Delete",
    confirmButtonClass: 'btn btn-danger',

    showCancelButton: true,
    cancelButtonText: "Cancel",
    cancelButtonClass: 'btn',

    type: "question",

    customClass: {
        actions: "mt-5 mb-5"
    }
}

这是在不指定模式的HTML的情况下完成的。如何手动触发此事件以响应某个事件?例如,异步操作完成后的toast。