'use strict';

const CLOUDFLARE_WORKERS_NAVIGATOR = "Cloudflare-Workers";
const NODE_PROCESS_RELEASE_NAME = "node";

function detectRuntime() {
  if (typeof Netlify === "object") {
    return "netlify";
  }
  if (typeof EdgeRuntime === "string") {
    return "edge-light";
  }
  if (globalThis.navigator?.userAgent === CLOUDFLARE_WORKERS_NAVIGATOR) {
    return "workerd";
  }
  if (globalThis.Deno) {
    return "deno";
  }
  if (globalThis.__lagon__) {
    return "lagon";
  }
  if (globalThis.process?.release?.name === NODE_PROCESS_RELEASE_NAME) {
    return "node";
  }
  if (globalThis.Bun) {
    return "bun";
  }
  if (globalThis.fastly) {
    return "fastly";
  }
  return "unknown";
}

exports.detectRuntime = detectRuntime;