import type { OBJECT_IDENTIFIER } from "@wildboar/asn1";
type IndexableOID = string;
/**
 * @summary Group items into a map by their OID
 * @description
 *
 * I considered using `Map.groupBy()`, but benchmarks showed this to be slightly
 * slower.
 *
 * @param {Array} items The items to be grouped
 * @param {Function} oidGetter A function that takes an item and obtains its object identifier
 * @returns {Map} A map of dot-delimited OID strings to values having those OIDs
 * @function
 */
export declare function groupByOID<T>(items: T[], oidGetter: (item: T) => OBJECT_IDENTIFIER | string): Map<IndexableOID, T[]>;
export default groupByOID;
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