import type { ModifyableCSSProperties, TextTransform } from '../layouts/measure-text';
export declare const fitText: ({ text, withinWidth, fontFamily, fontVariantNumeric, fontWeight, letterSpacing, validateFontIsLoaded, additionalStyles, textTransform, }: {
    text: string;
    withinWidth: number;
    fontFamily: string;
    fontWeight?: string | number | undefined;
    letterSpacing?: string | undefined;
    fontVariantNumeric?: string | undefined;
    validateFontIsLoaded?: boolean | undefined;
    textTransform?: TextTransform | undefined;
    additionalStyles?: ModifyableCSSProperties<Partial<CSSStyleDeclaration>> | undefined;
}) => {
    fontSize: number;
};