variable cookieMapHeadersInitSymbolDeprecatedDeprecated(will be removed after 0.212.0) Use https://deno.land/std/http/cookie.ts instead. import { cookieMapHeadersInitSymbol } from "https://deno.land/std@0.209.0/http/cookie_map.ts"; Symbol which is used in mergeHeaders to extract a [string | string][] from an instance to generate the final set of headers.