export declare function anEvent(): {
    cat: string;
    cname: string;
    custom: string;
    hostname: string;
    msg: string;
    name: string;
    pid: number;
    tid: number;
    time: string;
    tts: number;
};
export declare function anEventWithStack(): {
    sf: number;
    stack: never[];
    cat: string;
    cname: string;
    custom: string;
    hostname: string;
    msg: string;
    name: string;
    pid: number;
    tid: number;
    time: string;
    tts: number;
};
export declare function anInstantEvent(s?: string): any;
export declare function aDurationBeginEvent(): any;
export declare function aDurationEndEvent(): {
    ph: string;
    sf: number;
    stack: never[];
    cat: string;
    cname: string;
    custom: string;
    hostname: string;
    msg: string;
    name: string;
    pid: number;
    tid: number;
    time: string;
    tts: number;
};