import type { OpenAPIV3_1 } from '@scalar/openapi-types';
import type { AnyObject, Filesystem, UpgradeResult } from '../types/index.js';
/**
 * Upgrade specification to OpenAPI 3.1.0
 */
export declare function upgrade(value: string | AnyObject | Filesystem): UpgradeResult<OpenAPIV3_1.Document>;
//# sourceMappingURL=upgrade.d.ts.map