import { type ArgumentsHost } from '@nestjs/common';
import { BaseExceptionFilter, ModuleRef } from '@nestjs/core';
/**
 * OpraExceptionFilter
 *
 * NestJS exception filter that catches errors during OPRA HTTP requests
 * and returns responses according to OPRA standards.
 */
export declare class OpraExceptionFilter extends BaseExceptionFilter {
    private moduleRef;
    constructor(moduleRef: ModuleRef);
    /**
     * Processes the caught exception.
     * If the request has an OPRA context, it responds by converting the error to the OPRA error format.
     * Otherwise, it uses the default NestJS exception handling mechanism.
     *
     * @param exception - The caught exception object.
     * @param host - The arguments host.
     */
    catch(exception: any, host: ArgumentsHost): Promise<void> | undefined;
}