import { WorkbenchObjectTree } from "@codingame/monaco-vscode-api/vscode/vs/platform/list/browser/listService";
import { TestExplorerTreeElement } from "./index.js";
import { ISerializedTestTreeCollapseState } from "./testingViewState.js";
export declare class TestingObjectTree<TFilterData = void> extends WorkbenchObjectTree<TestExplorerTreeElement, TFilterData> {
    /**
     * Gets a serialized view state for the tree, optimized for storage.
     *
     * @param updatePreviousState Optional previous state to mutate and update
     * instead of creating a new one.
     */
    getOptimizedViewState(updatePreviousState?: ISerializedTestTreeCollapseState): ISerializedTestTreeCollapseState;
}