type ReduceKvReducer<TAccumulator, TValue> = (accumulator: TAccumulator, key: string | number, value: TValue) => TAccumulator;
type ReduceKvCollection<TValue> = Record<string, TValue> | TValue[];
export declare function reduce_kv<TAccumulator, TValue = unknown>(reducer: ReduceKvReducer<TAccumulator, TValue>, initial: TAccumulator, collection: ReduceKvCollection<TValue> | unknown): TAccumulator;
export {};