import { Observable } from 'rxjs';
import { CallHandler, ExecutionContext, NestInterceptor } from '@nestjs/common';
import { ApiMetricsService } from '../services/api-metrics.service';
export declare class ApiMetricsInterceptor implements NestInterceptor {
    private readonly metrics;
    constructor(metrics: ApiMetricsService);
    intercept(_ctx: ExecutionContext, next: CallHandler): Observable<any>;
}