export enum BSTVariant {
  STANDARD = 'STANDARD',
  INVERSE = 'INVERSE'
}

export enum CP {
  lt = 'lt',
  eq = 'eq',
  gt = 'gt'
}

/**
 * Enum representing different loop types.
 *
 * - `iterative`: Indicates the iterative loop type (with loops that use iterations).
 * - `recursive`: Indicates the recursive loop type (with loops that call themselves).
 */
export enum IterationType {
  ITERATIVE = 'ITERATIVE',
  RECURSIVE = 'RECURSIVE'
}

export enum FamilyPosition {
  ROOT = 'ROOT',
  LEFT = 'LEFT',
  RIGHT = 'RIGHT',
  ROOT_LEFT = 'ROOT_LEFT',
  ROOT_RIGHT = 'ROOT_RIGHT',
  ISOLATED = 'ISOLATED',
  MAL_NODE = 'MAL_NODE'
}

export type Comparator<K> = (a: K, b: K) => number;

export type DFSOrderPattern = 'pre' | 'in' | 'post';

export type NodeDisplayLayout = [string[], number, number, number];

export type BTNCallback<N, D = any> = (node: N) => D;

export interface IterableWithSize<T> extends Iterable<T> {
  size: number | ((...args: any[]) => number);
}

export interface IterableWithLength<T> extends Iterable<T> {
  length: number | ((...args: any[]) => number);
}

export type IterableWithSizeOrLength<T> = IterableWithSize<T> | IterableWithLength<T>;

export type BinaryTreePrintOptions = { isShowUndefined?: boolean; isShowNull?: boolean; isShowRedBlackNIL?: boolean };

export type BTNEntry<K, V> = [K | null | undefined, V | undefined];

export type BTNKeyOrNode<K, N> = K | null | undefined | N;

export type BTNExemplar<K, V, N> = BTNEntry<K, V> | BTNKeyOrNode<K, N>;

export type BTNodePureKeyOrNode<K, N> = K | N;

export type BTNodePureExemplar<K, V, N> = [K, V | undefined] | BTNodePureKeyOrNode<K, N>;

export type BSTNKeyOrNode<K, N> = K | undefined | N;

export type BinaryTreeDeleteResult<N> = { deleted: N | null | undefined; needBalanced: N | null | undefined };