import { SchemaOptions } from '@nestjs/mongoose';
/**
 * Extended SchemaOptions to include `criticalKeys` for duplicate checking.
 */
export interface ExtendedSchemaOptions extends SchemaOptions {
    criticalKeys?: string[];
}
/**
 * Custom decorator that wraps NestJS's @Schema
 * and stores criticalKeys on the schema options.
 */
export declare function SchemaWithCriticalKeys(options?: ExtendedSchemaOptions): ClassDecorator;