fixup! refactor: tighten up cloudflare detection

packages/pg/lib/stream.js

@@ -29,9 +29,21 @@ module.exports.getSecureStream = function getSecureStream(options) {
 
 /**
  * Are we running in a Cloudflare Worker?
- * 
+ *
  * @returns true if the code is currently running inside a Cloudflare Worker.
  */
 function isCloudflareRuntime() {
-  return Boolean(process.release && process.release.name !== 'node' && Response && new Response(null, { cf: { thing: true } }).cf.thing === true);
-}
+  // Since 2022-03-21 the `global_navigator` compatibility flag is on for Cloudflare Workers
+  // which means that `navigator.userAgent` will be defined.
+  if (typeof navigator === 'object' && navigator !== null && typeof navigator.userAgent === 'string') {
+    return navigator.userAgent === 'Cloudflare Workers'
+  }
+  // In case `navigator` or `navigator.userAgent` is not defined then try a more sneaky approach
+  if (typeof Response === 'function') {
+    const resp = new Response(null, { cf: { thing: true } })
+    if (typeof resp.cf === 'object' && resp.cf !== null && resp.cf.thing) {
+      return true
+    }
+  }
+  return false
+}