import type { InnerWalletApiClient } from "../../types.ts";
import { type Address, type IsUndefined } from "viem";
import type { WalletServerRpcSchemaType } from "@alchemy/wallet-api-types/rpc";
type RpcSchema = Extract<WalletServerRpcSchemaType, {
    Request: {
        method: "wallet_prepareSign";
    };
}>;
export type PrepareSignParams<TAccount extends Address | undefined = Address | undefined> = Omit<RpcSchema["Request"]["params"][0], "from" | "chainId"> & (IsUndefined<TAccount> extends true ? {
    from: Address;
} : {
    from?: never;
});
export type PrepareSignResult = RpcSchema["ReturnType"];
/**
 * Prepares a signature request for signing messages or transactions.
 *
 * @param {InnerWalletApiClient} client - The wallet API client to use for the request
 * @param {PrepareSignParams} params - Parameters for preparing the signature request
 * @returns {Promise<PrepareSignResult>} A Promise that resolves to the prepare sign result containing a signature request
 *
 * @example
 * ```ts
 * // Prepare a message to be signed
 * const result = await client.prepareSign({
 *    from: "0x1234...",
 *    type: "personal_sign",
 *    data: "Hello, world!",
 * });
 * ```
 */
export declare function prepareSign<TAccount extends Address | undefined = Address | undefined>(client: InnerWalletApiClient, params: PrepareSignParams<TAccount>): Promise<PrepareSignResult>;
export {};
//# sourceMappingURL=prepareSign.d.ts.map