import { Command } from "../../commandMap/command/Command";
import { Type } from "../../type";
import { Event } from "../../eventDispatcher/event/Event";
import { EventGuard } from "../..";
/**
 * Command mapping descriptor to be used within system module meta data.
 */
export interface CommandMappingDescriptor {
    /**
     * Event name upon which command mapped in command property should be invoked.
     */
    readonly event: Event['type'];
    /**
     * Command type, or list of command types, that should be invoked as event name listed in event property is
     * fired in system context.
     */
    readonly command: Type<Command> | Type<Command>[];
    /**
     * Describes if command should be executed only once.
     * @default false
     */
    readonly once?: boolean;
    /**
     * Default event guard, guarding command execution from improper events.
     */
    readonly guard?: EventGuard;
}