export type FontSizeOption = {
    id: string;
    label: string;
};
export declare const DEFAULT_FONT_SIZE = "100%";
export declare const FONT_SIZE_OPTIONS: FontSizeOption[];
export declare const isFontSize: (value: string | null | undefined) => value is string;
export declare const resolveFontSize: (value: string | null | undefined) => string;
export declare const useFontSizeSync: (fontSize: string | null | undefined) => void;