import { PublicKey, TransactionInstruction } from './types/solana-types';
import { Keypair } from './keypair';
export declare class Transaction {
    signatures: Array<{
        signature: Uint8Array | null;
        publicKey: PublicKey;
    }>;
    feePayer?: PublicKey;
    instructions: TransactionInstruction[];
    recentBlockhash?: string;
    constructor(opts?: {
        feePayer?: PublicKey;
        recentBlockhash?: string;
    });
    add(instruction: TransactionInstruction): Transaction;
    private compileMessage;
    serializeMessage(): Uint8Array;
    private encodeLength;
    sign(...signers: Keypair[]): void;
    serialize(): Uint8Array;
    static from(buffer: Uint8Array): Transaction;
}