export const getNodeDescendants = (id: string, limit = Infinity) => <T>(tree: Tree<T>) =>
mapIdsToNodes(getNodeDescendantsIds(id, limit)(tree))(tree);
+export const countNodes = <T>(tree: Tree<T>) =>
+ getNodeDescendantsIds('')(tree).length;
+
+export const countChildren = (id: string) => <T>(tree: Tree<T>) =>
+ getNodeChildren('')(tree).length;
+
export const getNodeDescendantsIds = (id: string, limit = Infinity) => <T>(tree: Tree<T>): string[] => {
const node = getNode(id)(tree);
const children = node ? node.children :
return ids.reduce((tree, id) => deselectNode(id)(tree), tree);
};
+export const getSelectedNodes = <T>(tree: Tree<T>) =>
+ getNodeDescendants('')(tree)
+ .filter(node => node.selected);
+
export const initTreeNode = <T>(data: Pick<TreeNode<T>, 'id' | 'value'> & { parent?: string }): TreeNode<T> => ({
children: [],
active: false,