import { NestInterceptor, ExecutionContext, CallHandler } from '@nestjs/common';
import { Observable } from 'rxjs';
import { UsageService } from './usage.service';
export declare class UsageInterceptor implements NestInterceptor {
    private usageService;
    private readonly logger;
    constructor(usageService: UsageService);
    intercept(context: ExecutionContext, next: CallHandler): Promise<Observable<any>>;
}