export declare class HitMap {
    private index;
    registerHit(key: string, delta?: number): number;
    registerHits(...keys: string[]): void;
    toMap(): Readonly<{
        [key: string]: HitEntry;
    }>;
    toArray(): ReadonlyArray<HitEntry>;
    toLiteralMap(): LiteralMap;
    toRanked(): ReadonlyArray<HitEntry>;
    toPercRanked(total?: number): ReadonlyArray<PercRankedEntry>;
}
export declare class SampledHitMap<V> {
    private hitMap;
    private multiMap;
    registerHit(key: string, value: V): void;
    toPercRanked(nrSamples: number, total?: number): ReadonlyArray<SampledPercRankedEntry<V>>;
}
interface HitEntry {
    key: string;
    value: number;
}
export interface PercRankedEntry {
    readonly idx: number;
    readonly key: string;
    readonly hits: number;
    readonly perc: number;
}
export interface SampledPercRankedEntry<V> extends PercRankedEntry {
    readonly samples: ReadonlyArray<V>;
}
export interface LiteralMap {
    [key: string]: number;
}
export {};