penpot-exporter-figma-plugin/plugin-src/translators/text/custom/translateCustomFont.ts

import slugify from 'slugify';

import { FontId } from '@ui/lib/types/text/textContent';

/**
 * @TODO: implement custom font loading for Penpot
 */
export const translateCustomFont = (fontName: FontName): FontId | undefined => {
  // For now display a message in the UI, so the user knows
  // that the file is using a custom font not present in Penpot
  figma.ui.postMessage({ type: 'FONT_NAME', data: fontName.family });

  return {
    fontId: slugify(fontName.family.toLowerCase()),
    fontVariantId: fontName.style.toLowerCase().replace(/\s/g, '')
  };
};