import { Subject } from 'rxjs/Subject';
export interface PerfPacket {
    url: string;
    method: string;
    dur: number;
    success: boolean;
}
export declare const GlobalHttpPerf$: Subject<PerfPacket>;
export declare const Perf: {
    time(data?: Partial<PerfPacket>): (append: Partial<PerfPacket>) => void;
};