export declare const onEventPrevent: () => void;
export declare const onEventStop: (_event: Event) => void;
export declare function getWindowTop(): number;
export declare function getWindowOffset(): {
    top: number;
    bottom: number;
    left: number;
    right: number;
    topWindowHeight: number;
};
interface PageCssVars {
    '--window-top'?: string;
    '--window-bottom'?: string;
    '--window-left'?: string;
    '--window-right'?: string;
    '--window-margin'?: string;
    '--top-window-height'?: string;
}
export declare function updateCssVar(cssVars: Record<string, any>): void;
export declare function updatePageCssVar(cssVars: PageCssVars): void;
interface AppCssVar {
    '--status-bar-height'?: string;
    '--tab-bar-height'?: string;
}
export declare function updateAppCssVar(cssVars: AppCssVar): void;
export declare function updateStyle(id: string, content: string): void;
export declare function removeStyle(id: string): void;
export {};