import { Emitter as MittEmitter } from "mitt";
import { type ApiClient, routes } from "@lodestar/api";
import { type ForkName } from "@lodestar/params";
import { LightClientBootstrap, LightClientFinalityUpdate, LightClientOptimisticUpdate, LightClientUpdate, type SyncPeriod } from "@lodestar/types";
import { type LightClientTransport } from "./interface.js";
export type LightClientRestEvents = {
    [routes.events.EventType.lightClientFinalityUpdate]: (update: LightClientFinalityUpdate) => void;
    [routes.events.EventType.lightClientOptimisticUpdate]: (update: LightClientOptimisticUpdate) => void;
};
export type LightClientRestEmitter = MittEmitter<LightClientRestEvents>;
export declare class LightClientRestTransport implements LightClientTransport {
    private readonly api;
    private controller;
    private readonly eventEmitter;
    private subscribedEventstream;
    constructor(api: ApiClient);
    getUpdates(startPeriod: SyncPeriod, count: number): Promise<{
        version: ForkName;
        data: LightClientUpdate;
    }[]>;
    getOptimisticUpdate(): Promise<{
        version: ForkName;
        data: LightClientOptimisticUpdate;
    }>;
    getFinalityUpdate(): Promise<{
        version: ForkName;
        data: LightClientFinalityUpdate;
    }>;
    getBootstrap(blockRoot: string): Promise<{
        version: ForkName;
        data: LightClientBootstrap;
    }>;
    onOptimisticUpdate(handler: (optimisticUpdate: LightClientOptimisticUpdate) => void): void;
    onFinalityUpdate(handler: (finalityUpdate: LightClientFinalityUpdate) => void): void;
    private subscribeEventstream;
}
//# sourceMappingURL=rest.d.ts.map