import type { SchemaBase } from './dsl.js';
import type { ImportBase } from './import-base.js';
/** Describes an exception a method can throw. */
export interface ExceptionSchema extends SchemaBase, Omit<ImportBase, 'type'> {
    type: 'exception';
}
export declare function defineException(options: {
    name: string;
    from: string;
    description?: string;
}): ExceptionSchema;
/** Timeout or unrecoverable I/O failure */
export declare const IOException: ExceptionSchema;
/** Business error code carried by the exception*/
export declare const CodeException: ExceptionSchema;
/** Business rule violation (maps to 422) */
export declare const BusinessException: ExceptionSchema;
/** Anything else — unexpected, carries no business semantics. Rendered as a
 *  plain Error / system exception, no dedicated runtime class. */
export declare const UnexpectedException: ExceptionSchema;