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// deno-lint-ignore no-explicit-anyexport interface DoublyLinkedList<T = any> {    val?: T;    next?: DoublyLinkedList<T> | null;    prev?: DoublyLinkedList<T> | null;}// deno-lint-ignore no-explicit-anyexport function DoublyLinkedList<T = any>(    val?: T,    next?: DoublyLinkedList<T>,    prev?: DoublyLinkedList<T>,): DoublyLinkedList<T> {    return { val, prev, next };}