import { ApplicationContext } from '@frontapp/ui-bridge';
import { FC, ReactElement } from 'react';
import { Observable } from 'rxjs';
export type OnContext = (context: ApplicationContext) => void | ReactElement;
interface EngineProps {
    contextUpdates: Observable<ApplicationContext>;
    registerStyleSheetForStyleSync: (styleSheet: CSSStyleSheet) => () => void;
    onContext: OnContext;
    onRequestDestroy: () => void;
}
export declare const Engine: FC<EngineProps>;
export {};