/// <reference types="node" />
import { Argument, ByzCoinRPC, ClientTransaction, Instruction } from "@dedis/cothority/byzcoin";
import { AddTxResponse } from "@dedis/cothority/byzcoin/proto/requests";
import ISigner from "@dedis/cothority/darc/signer";
/**
 * TransactionBuilder handles collecting multiple instructions and signing them all
 * together before sending the transaction to the chain.
 * There are convenience methods to create spawn, invoke, or delete instructions.
 * Once all instructions are added, the send method will contact one or more nodes
 * to submit the transaction.
 * After a call to the send method, the transaction is ready for new instructions.
 */
export declare class TransactionBuilder {
    protected bc: ByzCoinRPC;
    private instructions;
    constructor(bc: ByzCoinRPC);
    send(signers: ISigner[][], wait?: number): Promise<[ClientTransaction, AddTxResponse]>;
    hasInstructions(): boolean;
    append(inst: Instruction): Instruction;
    prepend(inst: Instruction): Instruction;
    spawn(iid: Buffer, contractID: string, args: Argument[]): Instruction;
    invoke(iid: Buffer, contractID: string, command: string, args: Argument[]): Instruction;
    delete(iid: Buffer, contractID: string): Instruction;
    toString(): string;
}