import { GlobalConfig } from '@n8n/config';
import type { PublicUser } from '@n8n/db';
import { InstanceSettings } from 'n8n-core';
import type { FeatureFlags, ITelemetryTrackProperties } from 'n8n-workflow';
export declare class PostHogClient {
    private readonly instanceSettings;
    private readonly globalConfig;
    private postHog?;
    private readonly flagsCache;
    constructor(instanceSettings: InstanceSettings, globalConfig: GlobalConfig);
    init(): Promise<void>;
    stop(): Promise<void>;
    track(payload: {
        userId: string;
        event: string;
        properties: ITelemetryTrackProperties;
    }): void;
    groupIdentify({ instanceId, distinctId, properties, }: {
        instanceId: string;
        distinctId?: string;
        properties: Record<string, string | number> | undefined;
    }): void;
    identify({ distinctId, properties, }: {
        distinctId: string;
        properties: Record<string | number, unknown> | undefined;
    }): void;
    getFeatureFlags(user: Pick<PublicUser, 'id' | 'createdAt'>): Promise<FeatureFlags>;
    private fetchFlagsFromPostHog;
    private applyEnvOverrides;
}