import type * as OpenFin from '../../../OpenFin';
import { Transport } from '../../../transport/transport';
type ProviderIdentity = OpenFin.ProviderIdentity;
type ChannelMiddleware = OpenFin.ChannelMiddleware;
type ErrorMiddleware = OpenFin.ErrorMiddleware;
type ChannelAction = OpenFin.ChannelAction;
export declare class ProtectedItems {
    providerIdentity: ProviderIdentity;
    wire: Transport;
    constructor(providerIdentity: ProviderIdentity, wire: Transport);
}
export declare class ChannelBase {
    protected subscriptions: Map<string, ChannelAction>;
    private defaultAction?;
    private preAction?;
    private postAction?;
    private errorMiddleware?;
    private static defaultAction;
    constructor();
    protected processAction(topic: string, payload: unknown, senderIdentity: ProviderIdentity | OpenFin.ClientIdentity): Promise<unknown>;
    beforeAction(func: ChannelMiddleware): void;
    onError(func: ErrorMiddleware): void;
    afterAction(func: ChannelMiddleware): void;
    remove(action: string): void;
    setDefaultAction(func: ChannelMiddleware): void;
    register(topic: string, listener: ChannelAction): boolean;
}
export {};