import type { IQos } from './IQos';
import type { IQosStartEvent } from './IQosStartEvent';
import type { IQosEndSchema } from '@msinternal/odsp-core-bundle';
export type QosConstructor = new (event: IQosStartEvent) => IQos;
/**
 * QosLogger allows multiple QosMonitors to be deferred processed.
 * @internal
 */
export default class QosLogger {
    private static _instance;
    private _qosEvents;
    private _deferExecutor;
    private _shouldProcessInRealTime;
    private _qosLogger;
    static get instance(): QosLogger;
    constructor();
    get shouldProcessInRealTime(): boolean;
    set shouldProcessInRealTime(processInRealTime: boolean);
    setLogger(qosLogger: new (event: IQosStartEvent) => IQos): void;
    getQosEvent(key: string): IQos | undefined;
    startQosMonitor(key: string, startData: IQosStartEvent): void;
    writeQosEndResult(key: string, endData: IQosEndSchema): void;
    private _startMonitor;
    private _endMonitor;
    private _initializeLogger;
}
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