Function docsAlias

packages/web/src/middleware.ts:4–19

(pathname: string)

import { exactLocale, matchLocale } from "./i18n/locales"

function docsAlias(pathname: string) {
  const hit = /^\/docs\/([^/]+)(\/.*)?$/.exec(pathname)
  if (!hit) return null

  const value = hit[1] ?? ""
  const tail = hit[2] ?? ""
  const locale = exactLocale(value)
  if (!locale) return null

  const next = locale === "root" ? `/docs${tail}` : `/docs/${locale}${tail}`
  if (next === pathname) return null
  return {
    path: next,
    locale,
  }
}

function cookie(locale: string) {
  const value = locale === "root" ? "en" : locale