variable cookieMapHeadersInitSymbolDeprecatedDeprecated(will be removed after 0.210.0) Import from https://deno.land/std/crypto/unstable_cookie_map.ts instead. Symbol which is used in mergeHeaders to extract a [string | string][] from an instance to generate the final set of headers. import { cookieMapHeadersInitSymbol } from "https://deno.land/std@0.207.0/http/mod.ts";