type ScanReducer<TAccumulator, TValue> = (accumulator: TAccumulator, value: TValue, index: number, array: TValue[]) => TAccumulator;
export declare function scan<TValue>(values: TValue[] | unknown, reducer: ScanReducer<TValue, TValue>): TValue[];
export declare function scan<TAccumulator, TValue>(values: TValue[] | unknown, initial: TAccumulator, reducer: ScanReducer<TAccumulator, TValue>): TAccumulator[];
export {};