//#region src/tree.types.d.ts
type TreeNodeValue = Record<string, unknown> | string | number | boolean | null;
type TreeNodeValidId = string | number;
interface TreeLeafNode<TValue extends TreeNodeValue | undefined = undefined, TId extends TreeNodeValidId = string> {
  id: TId;
  parentId: TId;
  children: [];
  value?: TValue | undefined;
}
interface TreeParentNode<TValue extends TreeNodeValue | undefined = undefined, TId extends TreeNodeValidId = string> {
  id: TId;
  parentId: TId | null;
  children: TreeNode<TValue, TId>[];
  value?: TValue | undefined;
}
interface TreeRootNode<TValue extends TreeNodeValue | undefined = undefined, TId extends TreeNodeValidId = string> {
  id: TId;
  parentId: null;
  children: TreeNode<TValue, TId>[];
  value?: TValue | undefined;
}
type TreeNode<TValue extends TreeNodeValue | undefined = undefined, TId extends TreeNodeValidId = string> = TreeRootNode<TValue, TId> | TreeParentNode<TValue, TId> | TreeLeafNode<TValue, TId>;
//#endregion
//#region src/mapper/mapper.types.d.ts
type TreeMapperResult<TValue extends TreeNodeValue | undefined, TKey extends string = string> = {
  success: true;
  treeNodes: TreeNode<TValue, TKey>[];
} | {
  success: false;
  message: string;
  issues: TreeMapperIssue[];
};
type TreeMapperIssue = {
  message: string;
};
//#endregion
//#region src/mapper/flat-tree-ws-mapper.d.ts
type FlatTreeWsParams = {
  separator: string;
};
type FlatTreeWsUniqueKey = string;
type FlatTreeWsMap<TValue extends TreeNodeValue | undefined, TKey extends FlatTreeWsUniqueKey = string> = Map<TKey, TValue>;
type FlatTreeWsRecord<TValue extends TreeNodeValue | undefined, TKey extends FlatTreeWsUniqueKey = string> = Record<TKey, TValue>;
type FlatTreeWs<TValue extends TreeNodeValue | undefined, TKey extends FlatTreeWsUniqueKey = string> = FlatTreeWsMap<TValue, TKey> | FlatTreeWsRecord<TValue, TKey>;
declare class FlatTreeWsMapper<TValue extends TreeNodeValue, TKey extends string = string> {
  toTreeNodes: (data: FlatTreeWs<TValue, TKey>, params: FlatTreeWsParams) => TreeMapperResult<TValue, TKey>;
  /**
   * @throws Error
   */
  toTreeNodesOrThrow: (data: FlatTreeWs<TValue, TKey>, params: FlatTreeWsParams) => TreeNode<TValue, TKey>[];
  /**
   * Will convert a tree of nodes to a flat tree.
   */
  fromTreeNodesOrThrow: <TId extends string = string>(treeNodes: TreeNode<TValue, TId>[], params: {
    method: "breadth-first";
  }) => FlatTreeWsMap<TValue, TKey>;
}
//#endregion
//#region src/search/dfs-tree-search.d.ts
type TreeSearchFindParams = {
  includeChildren?: boolean;
  reverse?: boolean;
};
type NativeNodeSearchKeys = [key: 'id' | 'parentId', equality: '===', value: string];
type TreeNodeOptionalChildren<TValue extends TreeNodeValue | undefined, TKey extends string | number = string> = TreeNode<TValue, TKey> & {
  children?: TreeNode<TValue, TKey>;
};
/**
 * Depth-First Search (DFS) algorithm for tree structures. It uses a stack rather
 * than recursion in order to support deeply nested trees without call-stack overflows.
 * It is well suited for exploring a branch of a data structure in depth and
 * usually preferred when memory usage is a concern or when the data
 * structure has many nodes with few levels.
 *
 * @see https://hackernoon.com/a-beginners-guide-to-bfs-and-dfs-in-javascript
 */
declare class DfsTreeSearch<TValue extends TreeNodeValue | undefined, TKey extends string | number = string> {
  private readonly treeNodes;
  constructor(treeNodes: TreeNode<TValue, TKey>[]);
  /**
   * Find first matching node in the tree. The `reverse` parameter can be used
   * to traverse the tree in reverse order.
   */
  findOne: (idOrConditionOrFn: TKey | NativeNodeSearchKeys | ((treeNode: TreeNode<TValue, TKey>) => boolean), params?: TreeSearchFindParams) => TreeNodeOptionalChildren<TValue, TKey> | undefined;
}
//#endregion
//#region src/tree.d.ts
declare class Tree<TValue extends TreeNodeValue | undefined, TKey extends string = string> {
  protected readonly treeNodes: TreeNode<TValue, TKey>[];
  constructor(treeNodes: TreeNode<TValue, TKey>[]);
  getTreeNodes: () => TreeNode<TValue, TKey>[];
}
//#endregion
export { DfsTreeSearch, type FlatTreeWs, FlatTreeWsMapper, Tree, TreeLeafNode, TreeNode, TreeNodeValue, TreeParentNode, TreeRootNode };
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