/*!
 * Copyright (c) Microsoft Corporation and contributors. All rights reserved.
 * Licensed under the MIT License.
 */
import { LumberEventName } from "./lumberEventNames";
import { LogLevel, LumberType, ILumberjackEngine, ILumberjackSchemaValidator, ILumberFormatter } from "./resources";
/**
 * @internal
 */
export declare class Lumber<T extends string = LumberEventName> {
    readonly eventName: T;
    readonly type: LumberType;
    private readonly _engineList;
    private readonly _schemaValidators?;
    private readonly _formatters?;
    private readonly _startTime;
    private _properties;
    private _durationInMs?;
    private _successful?;
    private _message?;
    private _exception?;
    private _logLevel?;
    private _completed;
    private _timestamp;
    get timestamp(): number;
    readonly id: string;
    get properties(): Map<string, any>;
    get durationInMs(): number | undefined;
    get successful(): boolean | undefined;
    get message(): string | undefined;
    get exception(): Error | undefined;
    get logLevel(): LogLevel | undefined;
    constructor(eventName: T, type: LumberType, _engineList: ILumberjackEngine[], _schemaValidators?: ILumberjackSchemaValidator[] | undefined, properties?: Map<string, any> | Record<string, any>, _formatters?: ILumberFormatter[] | undefined);
    setProperty(key: string, value: any): this;
    setProperties(properties: Map<string, any> | Record<string, any>): this;
    /**
     * Overrides the timestamp of the telemetry event.
     * @param msSinceEpoch - The timestamp in milliseconds since the epoch (1970-01-01T00:00:00Z), i.e. `Date.now()`
     * @remarks
     * This is useful when a Metric's start time needs to be set retroactively, such as when an event's duration is
     * tracked across several service instances, then logged in a single instance where the event may not have started.
     */
    overrideTimestamp(msSinceEpoch: number): void;
    success(message: string, logLevel?: LogLevel): void;
    error(message: string, exception?: any, logLevel?: LogLevel): void;
    isCompleted(): boolean;
    private emit;
}
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