import { UserError } from '../errors';
/** Internal configuration failure that must not become a manual approval. */
export declare class FunctionToolApprovalInputError extends UserError {
    constructor();
}
/**
 * Copy plain data for approval or execution without exposing retained input.
 * Reject other schema outputs before approval; validation must not run again
 * merely to obtain a second, potentially different, approval value.
 *
 * Shared by SDK runners through the internal utilities entry point.
 */
export declare function getFunctionToolApprovalInput(value: unknown): unknown;