import { Editor } from '@tiptap/react';
/**
 * Reads the fontSize mark at the current selection and returns it as a number.
 * Returns undefined when no fontSize mark is active (default paragraph size).
 *
 * Uses storedMarks as a fallback: when the cursor sits at the start of a new
 * empty paragraph (e.g. right after pressing Enter), ProseMirror does not
 * attach marks to the position yet — it stores them in storedMarks instead.
 * These are the marks that will be applied to the next typed character.
 *
 * @param editor - The live TipTap editor instance.
 * @returns The active font size in pixels, or undefined if none is set.
 */
export default function getActiveFontSize(editor: Editor): number | undefined;