import { InjectionToken } from '@angular/core';
import { FConnectorBase } from '../f-connector-base';
import * as i0 from "@angular/core";
export declare const F_NODE_OUTPUT: InjectionToken<FNodeOutputBase>;
export declare abstract class FNodeOutputBase extends FConnectorBase {
    abstract multiple: boolean;
    get canBeConnected(): boolean;
    abstract canBeConnectedInputs: string[];
    static ɵfac: i0.ɵɵFactoryDeclaration<FNodeOutputBase, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<FNodeOutputBase, never, never, {}, {}, never, never, false, never>;
}