৬। httpStatus কনস্ট্যান্ট বানানো

const HTTP_STATUS_CODES = {
    OK: 200,
    CREATED: 201,
    ACCEPTED: 202,
    NO_CONTENT: 204,
    BAD_REQUEST: 400,
    UNAUTHORIZED: 401,
    FORBIDDEN: 403,
    NOT_FOUND: 404,
    METHOD_NOT_ALLOWED: 405,
    NOT_ACCEPTABLE: 406,
    CONFLICT: 409,
    GONE: 410,
    UNSUPPORTED_MEDIA_TYPE: 415,
    UNPROCESSABLE_ENTITY: 422,
    INTERNAL_SERVER_ERROR: 500,
    NOT_IMPLEMENTED: 501,
    BAD_GATEWAY: 502,
    SERVICE_UNAVAILABLE: 503,
    GATEWAY_TIMEOUT: 504,
  };
  
  module.exports = HTTP_STATUS_CODES;