Method delete

packages/joint-core/src/alg/Deque.mjs:99–110

(key)

    // Remove a node from the deque
    delete(key) {
        const node = this.map.get(key);
        if (!node) return;

        if (node.prev) node.prev.next = node.next;
        else this.head = node.next;

        if (node.next) node.next.prev = node.prev;
        else this.tail = node.prev;

        this.map.delete(key);
    }

    // Does the deque contain a node with the given key?
    has(key) {