Function getOldVersionFromOldPath

lib/old-versions-utils.js:38–45

(oldPath)

// Given an old path like /enterprise/2.21/user/github/category/article,
// return an old version like 2.21.
export function getOldVersionFromOldPath(oldPath) {
  // We should never be calling this function on a path that starts with a new version,
  // so we can assume the path either uses the old /enterprise format or it's dotcom.
  if (!patterns.enterprise.test(oldPath)) return 'dotcom'

  const ghesNumber = oldPath.match(patterns.getEnterpriseVersionNumber)
  return ghesNumber ? ghesNumber[1] : latest
}

// Given an old path like /en/enterprise/2.21/user/github/category/article,
// return a new path like /en/enterprise-server@2.21/github/category/article.