import type { Hex } from "viem";
import { BaseError } from "./base.js";
/**
 * Error thrown when a transaction is missing the `to` address parameter. This class extends the `BaseError` class.
 */
export declare class TransactionMissingToParamError extends BaseError {
    name: string;
    /**
     * Throws an error indicating that a transaction is missing the `to` address in the request.
     */ constructor();
}
/**
 * Represents an error that occurs when a transaction cannot be found for a given user operation. This error extends from `BaseError`. The `hash` of the transaction is provided to indicate which transaction could not be found.
 */
export declare class FailedToFindTransactionError extends BaseError {
    name: string;
    /**
     * Constructs a new error message indicating a failure to find the transaction for the specified user operation hash.
     *
     * @param {Hex} hash The hexadecimal value representing the user operation hash.
     */
    constructor(hash: Hex);
}