import type { ClusterConfig, ResolutionContext } from "../types";
type ServerClusterConfig<TCluster> = Extract<ClusterConfig<TCluster>, {
    mode: "server";
}>;
/** Subset of {@link ResolutionContext} that callers supply from map state. */
export type ViewportResolutionContext = Readonly<Pick<ResolutionContext, "zoom" | "markersInViewport" | "viewportBounds">>;
/**
 * Applies `resolveGroups` entity-shape decisions to a server cluster list.
 *
 * Per ADR-0016: expand-only resolution. Each cluster gets a `memberItems`
 * cross-reference from `data` via `getId`/`getMarkerIds`. `"expand"` with
 * non-null `memberItems` drops the cluster from the kept set; `"expand"` with
 * null `memberItems` (any member missing from the data index) silently falls
 * back to `"keep"`.
 *
 * `viewportCtx` carries live map state (zoom, density, bounds). When omitted
 * all three default to zero/null — pass it from the consumer's map state so
 * `resolveGroups` callbacks receive real values.
 *
 * Pure function — no hooks, safe to call inside `useMemo`.
 */
export declare const resolveServerClusters: <TItem, TCluster>(cluster: ServerClusterConfig<TCluster>, data: ReadonlyArray<TItem>, getId: (item: TItem) => string, resolveGroups: (cluster: TCluster, memberItems: ReadonlyArray<TItem> | null, ctx: ResolutionContext) => "keep" | "expand", viewportCtx?: ViewportResolutionContext) => Readonly<{
    data: ReadonlyArray<TCluster>;
    memberItems: ReadonlyMap<string, ReadonlyArray<TItem> | null>;
}>;
export {};