export declare const QUILL_FONT_CLASS_TO_FAMILY: Record<string, string>;
export declare const QUILL_SIZE_CLASS_TO_EM: Record<string, number>;
export declare function guessFontFamilyFromQlClass(className: string): string;
export declare function qlClassToFontFamilyName(className: string): string;
export declare function parsePrimaryFontFamily(css: string): string | null;
export declare function parseFontSizeToPx(css: string | undefined, baseFontPx: number): number | undefined;
export declare function toNumericWeight(value: string | number | null | undefined): number;
export declare function isBoldWeight(value: string | number | null | undefined): boolean;
export declare function parseHtmlRoot(html: string): HTMLElement | null;
export interface RichTextDefaults {
    fontSize: number;
    fontFamily: string;
}
export declare function cleanupInlineWrappers(root: HTMLElement): void;
export declare function normalizeRichTextHtml(html: string, defaults: RichTextDefaults): string;
export declare function extractFontFamiliesFromHtml(html: string): string[];
/**
 * Multiplies every inline `font-size` (`px` or `em`) in the rich-text HTML by
 * `factor`, preserving the ratio between spans. Used by shrink-to-fit (the
 * editor canvas and the exporters' `textOverflow: 'change-font-size'` paths),
 * and the public escape hatch for proportionally resizing mixed sizes:
 * `el.set({ fontSize, text: scaleRichTextFontSizesInHtml(el.text, factor) })`.
 *
 * Returns the input unchanged when `factor === 1`, when `factor` is non-finite
 * or non-positive, or when the HTML contains no inline sizes.
 *
 * @public
 */
export declare function scaleRichTextFontSizesInHtml(html: string, factor: number): string;
/** True when any element in the HTML carries an inline `font-size`. Fitting
 * loops branch on this: mixed-size text must shrink via a uniform factor
 * (element base AND inline spans together), not by element fontSize alone. */
export declare function hasAnyInlineFontSize(html: string): boolean;
export declare function collectUsedFontFamilies(design: {
    pages?: unknown[];
}): string[];
export interface FontSpec {
    family: string;
    weight: string;
    style: string;
}
export declare function extractFontSpecsFromHtml(html: string, defaults: {
    fontFamily: string;
    fontWeight: string | number;
    fontStyle: string;
}): FontSpec[];