import { SDKInitConfig } from "@/types/index";
/**
 * _peq - an event queue that may contain events triggered before the sdk got initialized in the browser
 */
declare global {
    interface Window {
        _peq?: {
            queue: {
                eventId: string;
                properties?: Record<string, string>;
            }[];
            track: (eventId: string, properties?: Record<string, string>) => void;
        };
    }
}
export declare class Attribution {
    private static _instance;
    private _sdkConfig;
    private _client;
    private constructor();
    static init(sdkConfig: SDKInitConfig): void;
    static track(eventId: string, properties?: Record<string, string>): void;
}