import type { FilterGroup, FilterId, SingleFilter } from "@fn-sphere/core";
type RuleNode = {
    type: "Filter";
    data: SingleFilter;
    parentId: FilterId;
} | (Omit<FilterGroup, "conditions"> & {
    parentId: FilterId;
    conditionIds: FilterId[];
});
/**
 * Flatten the filter group to a map for easier manipulation.
 *
 * @internal
 */
export type FilterMap = {
    [key: string]: RuleNode | undefined;
};
/**
 * Convert the {@link FilterGroup} to {@link FilterMap}.
 */
export declare const toFilterMap: (rootFilterGroup: FilterGroup, parent?: FilterId) => FilterMap;
export declare const fromFilterMap: (map: FilterMap, rootKey?: FilterId) => FilterGroup;
/**
 * Calculates the depth of a given filter rule within the filterMap structure.
 * The root filter has a depth of 0. Each step towards a child filter increases the depth by 1.
 */
export declare const getDepthOfRule: (filterMap: FilterMap, id: FilterId) => number;
export {};
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