export declare const isIE: () => boolean;
export declare const isIE10: () => boolean;
export declare const isIE11: () => boolean;
export declare const isEdge: () => boolean;
export declare const getChromeVersion: () => number | false;
export declare const getSafariVersion: () => number | false;
/**
 * flexbox-gap compatibility
 * @see https://caniuse.com/flexbox-gap
 */
export declare const isSupportFlexGap: () => boolean;