|  | import { OperatorFunction, SchedulerLike } from '../types'; | 
|  | export declare function bufferTime<T>(bufferTimeSpan: number, scheduler?: SchedulerLike): OperatorFunction<T, T[]>; | 
|  | export declare function bufferTime<T>(bufferTimeSpan: number, bufferCreationInterval: number | null | undefined, scheduler?: SchedulerLike): OperatorFunction<T, T[]>; | 
|  | export declare function bufferTime<T>(bufferTimeSpan: number, bufferCreationInterval: number | null | undefined, maxBufferSize: number, scheduler?: SchedulerLike): OperatorFunction<T, T[]>; |