import { ModificationTree, RenderableStateDescriber, RSDList, RSDObject, StateDependencies, ViewState } from '../types';
import { Observable } from '../viewModel/Observable';
import { DataPath } from './DataPath';
import { Renderable } from './Renderable';
export declare const vdomUtils: {
    parseDataPath(dataName: string): DataPath;
    /** N for "New", means merge into new object */
    mergeStateDependenciesN(deps: StateDependencies, newDeps: StateDependencies): StateDependencies;
    /** N for "New", means merge into new object */
    mergeModificationTreeN(tree: ModificationTree, newTree: ModificationTree): ModificationTree;
    /** N for "New", means merge into new object */
    mergeStateN(state: ViewState, newState: ViewState): ViewState;
    mergeStateDependenciesWithChildren(deps: StateDependencies, children: Renderable[]): void;
    /** return true if needs update */
    checkStateDependencies(modifiedState: ViewState, stateDependencies: StateDependencies): boolean;
    mergeStateDescribers(describer: RenderableStateDescriber, newDescriber: true | RSDObject | RSDList): void;
    /**
     * NOTE: only for typing purpose, not actionaly needed.
     * ViewModel and ViewModelList can be correctly handled as ViewState
     */
    observableToViewState(target: string | number | boolean | Observable): ViewState;
};