import type * as React from "react";
/** Normalized tree node — the conventional `treeData` / Cascader `options` shape. */
export type TreeOption = {
    value: string;
    label: React.ReactNode;
    disabled?: boolean;
    disableCheckbox?: boolean;
    /** When false with `loadData`, shows expand affordance */
    isLeaf?: boolean;
    /**
     * Per-node glyph, drawn by `Tree` when `showIcon` is on. Carried through the normalizer so the
     * page tree and the dropdown tree keep ONE node shape; `TreeSelect` simply never reads it.
     */
    icon?: React.ReactNode;
    children?: TreeOption[];
};
export type TreeFieldNames = {
    label?: string;
    value?: string;
    children?: string;
};
export type NormalizedTreeOption = TreeOption & {
    children?: NormalizedTreeOption[];
};
type RawTreeNode = Record<string, unknown>;
export declare function reactNodeText(value: React.ReactNode): string;
export declare function normalizeTreeOptions(nodes: RawTreeNode[] | undefined, fieldNames?: TreeFieldNames): NormalizedTreeOption[];
export declare function getNodeByPath(options: NormalizedTreeOption[], path: string[]): NormalizedTreeOption[];
export declare function getOptionsAtPath(options: NormalizedTreeOption[], path: string[]): NormalizedTreeOption[];
export declare function formatPathLabels(chain: NormalizedTreeOption[], separator?: string): string;
export type TreePath = {
    path: string[];
    labels: string[];
};
export declare function collectLeafPaths(options: NormalizedTreeOption[], prefix?: string[], root?: NormalizedTreeOption[]): TreePath[];
export declare function collectAllPaths(options: NormalizedTreeOption[], prefix?: string[], root?: NormalizedTreeOption[]): TreePath[];
export declare function pathKey(path: string[]): string;
export declare function pathsEqual(a: string[], b: string[]): boolean;
export declare function filterTreeOptions(options: NormalizedTreeOption[], query: string, filter?: (query: string, path: NormalizedTreeOption[]) => boolean): TreePath[];
export declare function getDescendantValues(node: NormalizedTreeOption): string[];
export declare function flattenVisibleTree(options: NormalizedTreeOption[], expandedKeys: Set<string>, depth?: number): {
    node: NormalizedTreeOption;
    depth: number;
    hasChildren: boolean;
}[];
export declare function filterVisibleTree(options: NormalizedTreeOption[], query: string): {
    node: NormalizedTreeOption;
    depth: number;
    hasChildren: boolean;
}[];
export declare function collectAllExpandableKeys(options: NormalizedTreeOption[]): string[];
export declare function findNodeByValue(options: NormalizedTreeOption[], value: string): NormalizedTreeOption | undefined;
export {};