import { IndexGenerator } from './index-generator';
export interface IndexedQueueFactory {
    (opts?: IndexedQueueOpts): IndexedQueue;
}
export interface IndexedQueueOpts {
    index?: IndexGenerator;
}
export interface IndexedQueue {
    pop(index: number): any;
    push(val: any): number;
    length(): number;
    has(index: number): boolean;
}
export interface IndexedQueueDuckTypable {
    (val?: any): val is IndexedQueue;
}
export declare const isIndexedQueue: IndexedQueueDuckTypable;
declare const newIndexedQueue: IndexedQueueFactory;
export default newIndexedQueue;