import { Action, Actor } from '@testla/screenplay';
/**
 * Action Class. Set either Session Storage Items or Local Storage Items on the Browser.
 */
export declare class Set extends Action {
    private mode;
    private payload?;
    private constructor();
    /**
     * set the specified storage item.
     *
     * @param {Actor} actor Actor performing this action
     * @return {any} Returns the value of the `pageFunction` invocation.
     */
    performAs(actor: Actor): Promise<any>;
    /**
     * Set a session storage item identified by the given key + value, creating a new key/value pair if none existed for key previously.
     *
     * @param {string} key the key that specifies the item.
     * @param {any} value the value of the item.
     * @return {Set} new Set instance for session storage
     */
    static sessionStorageItem(key: string, value: any): Set;
    /**
     * Set a local storage item identified by the given key + value, creating a new key/value pair if none existed for key previously.
     *
     * @param {string} key the key that specifies the item.
     * @param {any} value the value of the item.
     * @return {Set} new Set instance for local storage.
     */
    static localStorageItem(key: string, value: any): Set;
}