/**
 * Chain connection manager.
 *
 * Manages JSON-RPC connections per genesis hash, multiplexing follow
 * subscriptions and request/response correlation over a single connection
 * per chain. Ported from triangle-js-sdks host-container/chainConnectionManager.ts.
 */
import type { HexString } from "../shared/codec/scale/primitives.js";
import type { ChainHeadEvent, OperationStartedResult } from "../api/types.js";
import type { JsonRpcProvider } from "@polkadot-api/json-rpc-provider";
type PendingRequest = {
    resolve: (result: unknown) => void;
    reject: (error: unknown) => void;
};
type FollowSubscription = {
    chainSubId: string;
    eventListener: (event: unknown) => void;
    pendingRequestId?: string;
};
type ChainEntry = {
    connection: {
        send: (msg: string) => void;
        disconnect: () => void;
    };
    pendingRequests: Map<string, PendingRequest>;
    followSubscriptions: Map<string, FollowSubscription>;
    refCount: number;
};
export declare function createChainConnectionManager(factory: (genesisHash: HexString) => JsonRpcProvider | undefined): {
    getOrCreateChain: (genesisHash: HexString) => ChainEntry | undefined;
    sendRequest: (genesisHash: HexString, method: string, params: unknown[]) => Promise<unknown>;
    startFollow: (genesisHash: HexString, withRuntime: boolean, onEvent: (event: unknown) => void) => {
        followId: string;
    };
    stopFollow: (genesisHash: HexString, followId: string) => void;
    getChainFollowSubId: (genesisHash: HexString) => string | undefined;
    releaseChain: (genesisHash: HexString) => void;
    dispose: () => void;
    convertJsonRpcEventToTyped: (event: Record<string, unknown>) => ChainHeadEvent;
    convertOperationStartedResult: (result: unknown) => OperationStartedResult;
    convertStorageQueryTypeToJsonRpc: (type: string) => string;
};
export {};
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