import type { NavigationTreeDataItem, NavigationTreeNodePartialState, NavigationTreeNodeState, NavigationTreeServiceNode, NavigationTreeState } from './types';
export declare enum NavigationTreeActionType {
    ToggleCollapsed = "toggle-collapsed",
    StartLoading = "start-loading",
    FinishLoading = "finish-loading",
    ErrorLoading = "error-loading",
    ResetNode = "reset-node"
}
export type NavigationTreeAction = {
    type: NavigationTreeActionType.ToggleCollapsed;
    payload: {
        path: string;
    };
} | {
    type: NavigationTreeActionType.StartLoading;
    payload: {
        path: string;
        /** Monotonic id captured at dispatch time; written into node state. */
        requestId: number;
    };
} | {
    type: NavigationTreeActionType.FinishLoading;
    payload: {
        path: string;
        activePath?: string;
        data: NavigationTreeDataItem[];
        /** Id of the `StartLoading` this result belongs to; stale ones are dropped. */
        requestId: number;
    };
} | {
    type: NavigationTreeActionType.ErrorLoading;
    payload: {
        path: string;
        error: unknown;
        /** Id of the `StartLoading` this error belongs to; stale ones are dropped. */
        requestId: number;
    };
} | {
    type: NavigationTreeActionType.ResetNode;
    payload: {
        path: string;
    };
};
export declare function getDefaultNodeState(): {
    collapsed: boolean;
    loading: boolean;
    loaded: boolean;
    error: boolean;
    children: never[];
    requestId: number;
};
export declare function getNodeState(partialState: NavigationTreeNodePartialState): NavigationTreeNodeState;
export declare function reducer(state: NavigationTreeState | undefined, action: NavigationTreeAction): NavigationTreeState;
export declare function selectTreeAsList(state: NavigationTreeState, rootPath: string): (NavigationTreeNodeState | NavigationTreeServiceNode)[];