code: async function getFileContent(filePath) {
      try {
          const fileContent = await fs.readFile(filePath);
          return fileContent;
      }
      catch(err) {
          if( err.code === 'ENOENT' ) {
              return null;
          }
          throw err;
      }
  }
docs: TODO-LATER; - Consider caching `getFileContent` - Possible in dev? - For sure in prod?