import { EggCore } from '@eggjs/core';
import type { Tracer } from '../../lib/tracer.js';
declare const cacheTracer: unique symbol;
export declare const isReady: unique symbol;
export default class TracerApplication extends EggCore {
    [cacheTracer]: Tracer | undefined;
    get tracer(): Tracer;
}
declare module '@eggjs/core' {
    interface EggCore {
        tracer: Tracer;
    }
}
export {};