feat: drop node v14/v16/v18, update to es2022, remove req.connection (#1162)

Co-authored-by: Benjamin Newman <benjaminnewman@Benjamins-Laptop.local>

Author: bjnewman

package.json

@@ -99,7 +99,7 @@
     "patch-package/**/tmp": "^0.2.4"
   },
   "engines": {
-    "node": "^14.18.0 || ^16.10.0 || >=18.0.0"
+    "node": ">=20.0.0"
   },
   "commitlint": {
     "extends": [

src/http-proxy-middleware.ts

@@ -90,12 +90,8 @@ export class HttpProxyMiddleware<TReq, TRes> {
     /**
      * Get the server object to subscribe to server events;
      * 'upgrade' for websocket and 'close' for graceful shutdown
-     *
-     * NOTE:
-     * req.socket: node >= 13
-     * req.connection: node < 13 (Remove this when node 12/13 support is dropped)
      */
-    const server: https.Server = ((req.socket ?? req.connection) as any)?.server;
+    const server: https.Server = (req.socket as any)?.server;
 
     if (server && !this.serverOnCloseSubscribed) {
       server.on('close', () => {

tsconfig.json

@@ -5,7 +5,7 @@
     "lib": ["es2021", "es2022"],
     "module": "commonjs",
     "moduleResolution": "node",
-    "target": "es2021",
+    "target": "es2022",
     "incremental": true,
     "declaration": true,
     "strict": true,