JSON反序列化，如何重命名字段？

// utils.ets 
export function underscoreToCamelCase(underscoreString:string):string { 
  return underscoreString.replace(/_([a-z])/g, (match:string, letter:string):string=> { 
    return letter.toUpperCase(); 
  }); 
} 
export function convertKeysToCamelCase(obj:ESObject):ESObject { 
  if (obj && typeof obj === 'object') { 
    const newObj:ESObject = {}; 
    Object.keys(obj).forEach((key)=>{ 
      if (obj.hasOwnProperty(key)) { 
        const newKey = underscoreToCamelCase(key); 
        newObj[newKey] = convertKeysToCamelCase(obj[key]); 
      } 
    }) 
    return newObj; 
  } else { 
    return obj; 
  } 
}