import { CallOptions } from '@grpc/grpc-js';
import { gateway } from '@hyperledger/fabric-protos';
import { ChaincodeEvent } from './chaincodeevent';
import { CloseableAsyncIterable, GatewayClient } from './client';
import { Signable } from './signable';
import { SigningIdentity } from './signingidentity';
/**
 * Delivers events emitted by transaction functions in a specific chaincode.
 */
export interface ChaincodeEventsRequest extends Signable {
    /**
     * Get chaincode events emitted by transaction functions of a specific chaincode.
     * @param options - gRPC [CallOptions](https://grpc.github.io/grpc/node/grpc.Client.html#~CallOptions).
     * @returns Chaincode events. The iterator should be closed after use to complete the eventing session.
     * @throws {@link GatewayError}
     * Thrown by the iterator if the gRPC service invocation fails.
     * @example
     * ```typescript
     * const events = await request.getEvents();
     * try {
     *     for await (const event of events) {
     *         // Process event
     *     }
     * } finally {
     *     events.close();
     * }
     * ```
     */
    getEvents(options?: CallOptions): Promise<CloseableAsyncIterable<ChaincodeEvent>>;
}
export interface ChaincodeEventsRequestOptions {
    client: GatewayClient;
    signingIdentity: SigningIdentity;
    signedRequest: gateway.SignedChaincodeEventsRequest;
}
export declare class ChaincodeEventsRequestImpl implements ChaincodeEventsRequest {
    #private;
    constructor(options: Readonly<ChaincodeEventsRequestOptions>);
    getEvents(options?: Readonly<CallOptions>): Promise<CloseableAsyncIterable<ChaincodeEvent>>;
    getBytes(): Uint8Array;
    getDigest(): Uint8Array;
    setSignature(signature: Uint8Array): void;
}
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