export declare namespace Tracer2 {
    export interface TracerFunction {
        <T>(delegate: () => T): T;
        <T>(delegate: () => Promise<T>): Promise<T>;
    }
    export interface TracerLogger {
        readonly info: (msg: string) => void;
        readonly warn: (msg: string) => void;
    }
    interface CreateOpts {
        readonly id: string;
        readonly threshold?: number;
        readonly logger?: TracerLogger;
    }
    export function create(opts: CreateOpts): TracerFunction;
    export {};
}