import { CallOptions } from '@grpc/grpc-js';
import { gateway } from '@hyperledger/fabric-protos';
import { GatewayClient } from './client';
import { Signable } from './signable';
import { SigningIdentity } from './signingidentity';
import { Transaction } from './transaction';
/**
 * Proposal represents a transaction proposal that can be sent to peers for endorsement or evaluated as a query.
 */
export interface Proposal extends Signable {
    /**
     * Get the transaction ID for this proposal.
     */
    getTransactionId(): string;
    /**
     * Evaluate the transaction proposal and obtain its result, without updating the ledger. This runs the transaction
     * on a peer to obtain a transaction result, but does not submit the endorsed transaction to the orderer to be
     * committed to the ledger.
     * @param options - gRPC [CallOptions](https://grpc.github.io/grpc/node/grpc.Client.html#~CallOptions).
     * @returns The result returned by the transaction function.
     * @throws {@link GatewayError}
     * Thrown if the gRPC service invocation fails.
     */
    evaluate(options?: CallOptions): Promise<Uint8Array>;
    /**
     * Obtain endorsement for the transaction proposal from sufficient peers to allow it to be committed to the ledger.
     * @param options - gRPC [CallOptions](https://grpc.github.io/grpc/node/grpc.Client.html#~CallOptions).
     * @returns An endorsed transaction that can be submitted to the ledger.
     * @throws {@link EndorseError}
     * Thrown if the gRPC service invocation fails.
     */
    endorse(options?: CallOptions): Promise<Transaction>;
}
export interface ProposalImplOptions {
    client: GatewayClient;
    signingIdentity: SigningIdentity;
    channelName: string;
    proposedTransaction: gateway.ProposedTransaction;
}
export declare class ProposalImpl implements Proposal {
    #private;
    constructor(options: Readonly<ProposalImplOptions>);
    getBytes(): Uint8Array;
    getDigest(): Uint8Array;
    getTransactionId(): string;
    evaluate(options?: Readonly<CallOptions>): Promise<Uint8Array>;
    endorse(options?: Readonly<CallOptions>): Promise<Transaction>;
    setSignature(signature: Uint8Array): void;
}
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