import * as _bankofai_x402_core_types from '@bankofai/x402-core/types';
import { SchemeNetworkClient, PaymentRequirements, PaymentPayloadContext, PaymentPayloadResult } from '@bankofai/x402-core/types';
import { C as ClientEvmSigner } from '../../signer-m5yRWbVQ.js';
import { E as EvmSchemeOptions } from '../../rpc-BBJ9foT3.js';
export { d as UptoEvmSchemeConfig, e as UptoEvmSchemeConfigByChainId } from '../../rpc-BBJ9foT3.js';
import { E as ExactDefaultAssetInfo } from '../../defaultAssets-DyTlDVvA.js';
export { P as Permit2AllowanceParams, c as createPermit2ApprovalTx, g as getPermit2AllowanceReadParams } from '../../permit2-ClggjaRg.js';
export { e as erc20AllowanceAbi } from '../../constants-BOdyCd_Z.js';
import 'viem';

/**
 * EVM client implementation for the Upto payment scheme.
 * Handles Permit2-based payment payload creation and gas-sponsoring extensions.
 */
declare class UptoEvmScheme implements SchemeNetworkClient {
    private readonly signer;
    private readonly options?;
    readonly scheme = "upto";
    findDefaultAsset: _bankofai_x402_core_types.FindDefaultAsset<ExactDefaultAssetInfo>;
    /**
     * Creates a new UptoEvmScheme instance.
     *
     * @param signer - The EVM signer for client operations
     * @param options - Optional RPC configuration
     */
    constructor(signer: ClientEvmSigner, options?: EvmSchemeOptions | undefined);
    /**
     * Creates a payment payload for the Upto scheme using Permit2.
     *
     * @param x402Version - The x402 protocol version
     * @param paymentRequirements - The payment requirements
     * @param context - Optional context with server-declared extensions
     * @returns Promise resolving to a payment payload result
     */
    createPaymentPayload(x402Version: number, paymentRequirements: PaymentRequirements, context?: PaymentPayloadContext): Promise<PaymentPayloadResult>;
}

export { UptoEvmScheme, EvmSchemeOptions as UptoEvmSchemeOptions };