import { AnalyticsDispatcher } from '../../internal/AnalyticsDispatcher';
declare function withExtra<T>(this: AnalyticsDispatcher<T>, key: string, value: any): AnalyticsDispatcher<T>;
declare module '../../internal/AnalyticsDispatcher' {
    interface AnalyticsDispatcher<T> {
        withExtra: typeof withExtra;
    }
}
export {};