fix: remove structuredClone polyfill, require node >= 17

Author: titanism

README.md

@@ -15,7 +15,7 @@
 </div>
 <hr />
 <div align="center">
-  ⚡ <a href="#tangerine-benchmarks"><i><u><strong>AS FAST AS</strong></u></i></a> native <a href="https://nodejs.org/api/dns.html" target="_blank">Node.js <code>dns</code></a>! 🚀 &bull; Supports Node v16+ with ESM/CJS &bull; Made for <a href="https://forwardemail.net" target="_blank"><strong>Forward Email</strong></a>.
+  ⚡ <a href="#tangerine-benchmarks"><i><u><strong>AS FAST AS</strong></u></i></a> native <a href="https://nodejs.org/api/dns.html" target="_blank">Node.js <code>dns</code></a>! 🚀 &bull; Supports Node v17+ with ESM/CJS &bull; Made for <a href="https://forwardemail.net" target="_blank"><strong>Forward Email</strong></a>.
 </div>
 <hr />
 

index.html

@@ -23,7 +23,7 @@
     />
     <meta
       property="og:description"
-      content="🍊 Tangerine is the best Node.js drop-in replacement for dns.promises.Resolver using DNS over HTTPS via undici with built-in retries, timeouts, smart server rotation, and caching support for multiple backends. ⚡ AS FAST AS native Node.js dns! 🚀 Supports Node v16+ with ESM/CJS.  Made for Forward Email."
+      content="🍊 Tangerine is the best Node.js drop-in replacement for dns.promises.Resolver using DNS over HTTPS via undici with built-in retries, timeouts, smart server rotation, and caching support for multiple backends. ⚡ AS FAST AS native Node.js dns! 🚀 Supports Node v17+ with ESM/CJS.  Made for Forward Email."
     />
     <meta property="og:site_name" content="Tangerine" />
     <meta property="og:type" content="website" />

index.js

@@ -17,7 +17,6 @@ const pMap = require('p-map');
 const pWaitFor = require('p-wait-for');
 const packet = require('dns-packet');
 const semver = require('semver');
-const structuredClone = require('@ungap/structured-clone').default;
 const { getService } = require('port-numbers');
 const pkg = require('./package.json');
 

package.json

@@ -10,7 +10,6 @@
     "Forward Email (https://forwardemail.net)"
   ],
   "dependencies": {
-    "@ungap/structured-clone": "^1.2.0",
     "auto-bind": "4",
     "dns-packet": "^5.6.1",
     "dohdec": "^5.0.3",
@@ -57,7 +56,7 @@
     "xo": "^0.58.0"
   },
   "engines": {
-    "node": ">=16"
+    "node": ">=17"
   },
   "files": [
     "index.js"