import { Payload } from './type-alias';
import { EntityState } from '../entity-state';
import { Type } from '@angular/core';
export declare type EntityAddAction<T> = Payload<T | T[]>;
export declare class Add<T> {
    /**
     * Generates an action that will add the given entities to the state.
     * The entities given by the payload will be added.
     * For certain ID strategies this might fail, if it provides an existing ID.
     * In all other cases it will overwrite the ID value in the entity with the calculated ID.
     * @param target The targeted state class
     * @param payload An entity or an array of entities to be added
     * @see CreateOrReplace#constructor
     */
    constructor(target: Type<EntityState<T>>, payload: T | T[]);
}