import { type Address, type Chain, type Client, type Hex, type Transport } from "viem";
import type { ClientMiddlewareConfig } from "../client/types";
import type { EntryPointVersion } from "../entrypoint/types";
import type { UserOperationFeeOptions, UserOperationOverrides, UserOperationRequest, UserOperationStruct } from "../types";
import { type Deferrable } from "../utils/index.js";
export type Erc7677RpcSchema<TContext extends Record<string, any> = Record<string, any>> = [
    {
        Method: "pm_getPaymasterStubData";
        Parameters: [UserOperationRequest, Address, Hex, TContext];
        ReturnType: {
            sponsor?: {
                name: string;
                icon?: string;
            };
            paymaster?: Address;
            paymasterData?: Hex;
            paymasterVerificationGasLimit?: Hex;
            paymasterPostOpGasLimit?: Hex;
            paymasterAndData?: Hex;
            isFinal?: boolean;
        };
    },
    {
        Method: "pm_getPaymasterData";
        Parameters: [UserOperationRequest, Address, Hex, TContext];
        ReturnType: {
            paymaster?: Address;
            paymasterData?: Hex;
            paymasterVerificationGasLimit?: Hex;
            paymasterPostOpGasLimit?: Hex;
            paymasterAndData?: Hex;
        };
    }
];
export type Erc7677Client<T extends Transport = Transport, TContext extends Record<string, any> = Record<string, any>> = Client<T, Chain, undefined, Erc7677RpcSchema<TContext>>;
export type Erc7677MiddlewareParams<TContext extends Record<string, any> | undefined = Record<string, any> | undefined, TEntryPointVersion extends EntryPointVersion = EntryPointVersion> = {
    context?: ((struct: Deferrable<UserOperationStruct<TEntryPointVersion>>, args: {
        overrides?: UserOperationOverrides<TEntryPointVersion>;
        feeOptions?: UserOperationFeeOptions;
    }) => Promise<TContext>) | TContext;
};
/**
 * Middleware function for interacting with ERC-7677 enabled clients. It supports resolving paymaster and data fields for user operations.
 * This middleware assumes that your RPC provider supports the ERC-7677 methods (pm_getPaymasterStubData and pm_getPaymasterData).
 *
 * @example
 * ```ts
 * import { createSmartAccountClient, erc7677Middleware } from "@aa-sdk/core";
 * import { http } from "viem";
 * import { sepolia } from "viem/chains";
 *
 * const client = createSmartAccountClient({
 *  transport: http("rpc-url"),
 *  chain: sepolia,
 *  // this assumes that your RPC provider supports the ERC-7677 methods AND takes no context
 *  ...erc7677Middleware(),
 * })
 * ```
 *
 * @param {Erc7677MiddlewareParams<TContext>} params Middleware parameters including context function or object. Context can be resolved dynamically by passing in a function which takes in the context at the time of sending a user op
 * @returns {Pick<ClientMiddlewareConfig, "dummyPaymasterAndData" | "paymasterAndData">} An object containing middleware functions `dummyPaymasterAndData` and `paymasterAndData` for processing user operations with the paymaster data
 */
export declare function erc7677Middleware<TContext extends Record<string, any> | undefined = Record<string, any> | undefined>(params?: Erc7677MiddlewareParams<TContext>): Required<Pick<ClientMiddlewareConfig, "dummyPaymasterAndData" | "paymasterAndData">>;