A representation of user agent string, which can be used to determine environmental information represented by the string. All properties are determined lazily.

import { UserAgent } from "https://deno.land/std@0.212.0/http/user_agent.ts";

Deno.serve((req) => {
  const userAgent = new UserAgent(req.headers.get("user-agent") ?? "");
  return new Response(`Hello, ${userAgent.browser.name}
    on ${userAgent.os.name} ${userAgent.os.version}!`);
});

The name and version of the browser extracted from the user agent string.

The architecture of the CPU extracted from the user agent string.

The model, type, and vendor of a device if present in a user agent string.

The name and version of the browser engine in a user agent string.

The name and version of the operating system in a user agent string.

A read only version of the user agent string related to the instance.