import { Headers } from "https://deno.land/x/deno@v1.28.0/ext/fetch/lib.deno_fetch.d.ts";
Appends a new value onto an existing header inside a Headers
object, or
adds the header if it does not already exist.
import { Headers } from "https://deno.land/x/deno@v1.28.0/ext/fetch/lib.deno_fetch.d.ts";
Appends a new value onto an existing header inside a Headers
object, or
adds the header if it does not already exist.