export declare const UNRANKED: number;
export declare function buildRecencyRanks(history: readonly string[]): Map<string, number>;
export declare function rankOf(value: string, ranks: ReadonlyMap<string, number>): number;
export declare function compareByRecency(a: string, b: string, ranks: ReadonlyMap<string, number>): number;
export declare function sortByRecency(names: readonly string[], history: readonly string[]): string[];