import { AnyIterable, Mapper } from 'augmentative-iterable';
import { FluentEmitOptions } from '../types/base';
export declare function combineEmitter<T>(this: AnyIterable<T>, eventEmitter: any, optionsOrKeyA?: FluentEmitOptions | Mapper<any, any>, keyB?: Mapper<any, any>, options?: FluentEmitOptions): AnyIterable<[unknown, unknown]>;