import { AnyIterable } from 'augmentative-iterable';
import { FluentAsyncIterable, FluentIterable } from '../base';
export interface WhenEmptyFunction {
    /**
     * Iterates over a fallback iterable when the original is empty
     * @param fallback the fallback iterable
     */
    <R>(fallback: Iterable<R>): FluentIterable<R>;
}
export interface AsyncWhenEmptyFunction {
    /**
     * Iterates over a fallback iterable when the original is empty
     * @param fallback the fallback iterable
     */
    <R>(fallback: AnyIterable<R>): FluentAsyncIterable<R>;
}