/**
 * The Per Request Storage module (PRS) provides an API for storing small
 * amounts of data that exist only for the duration of a request.
 *
 * This APIs primary purpose is to provide a way for filters to share data
 * with each other, without modifying the Request object.
 */
import { Value, Object } from '@quenk/noni/lib/data/jsonx';
import { Maybe } from '@quenk/noni/lib/data/maybe';
import { Storage } from './';
/**
 * PRSStorage class.
 *
 * This is used behind the scens to provide the prs api.
 */
export declare class PRSStorage implements Storage {
    data: Object;
    values: Object;
    constructor(data?: Object);
    get(key: string): Maybe<Value>;
    getOrElse(key: string, alt: Value): Value;
    getAll(): Object;
    exists(key: string): boolean;
    set(key: string, value: Value): PRSStorage;
    remove(key: string): PRSStorage;
    reset(): PRSStorage;
}