import { RefObject } from 'react';
export declare const isSafariVersionLess: (x: number) => boolean;
export declare const isSafariWithBrokenLineClamp: () => boolean;
export declare const isRichText: (text: string) => boolean;
export declare const getIsExpandRedundant: (textRef: RefObject<HTMLDivElement>, maxLinesCss: number) => boolean;