/// <reference types="node" />
import * as types from '../config/types';
import { PublicKey } from './publickey';
import { Message } from '../message';
/**
 * List of TransactionInstruction object fields that may be initialized at construction
 */
export declare type TransactionInstructionCtorFields = {
    keys: Array<types.AccountMeta>;
    programId: PublicKey;
    data?: Buffer;
};
export interface TransactionInstructionJSON {
    keys: {
        pubkey: string;
        isSigner: boolean;
        isWritable: boolean;
    }[];
    programId: string;
    data: number[];
}
/**
 * Transaction Instruction class
 */
export declare class TransactionInstruction {
    /**
     * Public keys to include in this transaction
     * Boolean represents whether this pubkey needs to sign the transaction
     */
    keys: Array<types.AccountMeta>;
    /**
     * Program Id to execute
     */
    programId: PublicKey;
    /**
     * Program input
     */
    data: Buffer;
    constructor(opts: TransactionInstructionCtorFields);
    /**
     * @internal
     */
    toJSON(): TransactionInstructionJSON;
}
export declare class Transaction {
    feePayer: string;
    recentBlockhash: string;
    instructions: types.TransactionInstruction[];
    signature?: string;
    constructor(tx: types.TransactionArgs);
    add(instruction: types.TransactionInstruction): void;
    /**
     * Compile transaction data
     */
    compileMessage(): Message;
    /**
     * Return sendable tx string with given signature.
     *
     * @param signature signature generated by CoolWallet Pro
     * @returns
     */
    toTxString(signature: string): string;
}