import type { Id64Array, Id64String } from "@itwin/core-bentley";
/** @internal */
export type ChildrenTree<T extends object = object> = Map<string, T & {
    children?: ChildrenTree<T>;
}>;
/** @internal */
export declare function getIdsFromChildrenTree<T extends object = object>({ tree, predicate, }: {
    tree: ChildrenTree<T>;
    predicate?: (props: {
        depth: number;
        treeEntry: T;
    }) => boolean;
}): Set<string>;
/**
 * Updates children tree with provided `idsToAdd`:
 * - All Ids are added (if they are not yet added) to children tree in the same order they appear in `idsToAdd` array.
 * - `T` is assigned to each entry using the `additionalPropsGetter` function.
 * @internal
 */
export declare function updateChildrenTree<T extends object = object>({ tree, additionalPropsGetter, idsToAdd, }: {
    tree: ChildrenTree<T>;
    idsToAdd: Id64Array;
    additionalPropsGetter: (id: Id64String, additionalProps?: T) => T;
}): void;
/** @internal */
export declare function getOptimalBatchSize({ totalSize, maximumBatchSize }: {
    totalSize: number;
    maximumBatchSize: number;
}): number;
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