export type NestedTreePath = {
    [key: string]: {} | NestedTreePath;
};
export type TreePathState = NestedTreePath;
export type TreePathAction = {
    type: 'reset';
} | {
    type: 'toggled_level';
    value: string[];
} | {
    type: 'open_level';
    value: string[];
} | {
    type: 'close_level';
    value: string[];
};
export declare const keyExists: (obj: NestedTreePath, path: string[]) => boolean;
export declare function treePathReducer(state: TreePathState, action: TreePathAction): TreePathState;
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