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import type { Middleware } from "../core/server.ts";
export interface Options {  add: boolean;  code: 301 | 302 | 307 | 308;}
export const defaults: Options = {  add: false,  code: 301,};
/** Middleware to add/remove the www. domain */export default function www(userOptions?: Partial<Options>): Middleware {  const options = { ...defaults, ...userOptions };
  return async (request, next) => {    const url = new URL(request.url);
    if (url.hostname.startsWith("www.")) {      if (!options.add) {        url.hostname = url.hostname.replace("www.", "");        return new Response(null, {          status: options.code,          headers: {            location: url.toString(),          },        });      }    } else if (options.add) {      url.hostname = `www.${url.hostname}`;      return new Response(null, {        status: options.code,        headers: {          location: url.toString(),        },      });    }
    return await next(request);  };}