react-native-unit-components/src/nativeModulesHelpers/UNFontFileHelper/UNFontFileHelper.ts

Unit React Native components

import type { UNFonts } from '../../types/shared/fonts.types';
import AppInfo from '../../utils/AppInfo';

export const loadIosFontBase64 = async (fonts: UNFonts): Promise<Record<string, string>> => {
  const fileNames = new Set<string>();
  Object.values(fonts).forEach((familyFonts) => {
    familyFonts.forEach((fontData) => {
      fontData.sources.forEach((source) => {
        fileNames.add(source.fileName);
      });
    });
  });

  const map: Record<string, string> = {};
  for (const fileName of fileNames) {
    try {
      const base64 = await AppInfo.readFontFileAsBase64(fileName);
      map[fileName] = base64;
    } catch (e) {
      console.warn(`Failed to read font file: ${fileName}`, e);
    }
  }
  return map;
};