Function setFastlySurrogateKey

middleware/set-fastly-surrogate-key.js:17–26

(res, enumKey, isCustomKey = false)

}

export function setFastlySurrogateKey(res, enumKey, isCustomKey = false) {
  if (process.env.NODE_ENV !== 'production') {
    if (!isCustomKey && !Object.values(SURROGATE_ENUMS).includes(enumKey)) {
      throw new Error(
        `Unrecognizes surrogate enumKey. ${enumKey} is not one of ${Object.values(SURROGATE_ENUMS)}`
      )
    }
  }
  res.set(KEY, enumKey)
}

export function setDefaultFastlySurrogateKey(req, res, next) {
  res.set(KEY, `${SURROGATE_ENUMS.DEFAULT} ${makeLanguageSurrogateKey()}`)