Update ESLint and Prettier tools to latest versions

eslint.config.mjs

@@ -0,0 +1,10 @@
+import { defineConfig } from 'eslint/config';
+import eslintPluginPrettierRecommended from 'eslint-plugin-prettier/recommended';
+import globals from 'globals';
+import js from '@eslint/js';
+
+export default defineConfig([
+  { files: ['**/*.js', '**/*.mjs'], languageOptions: { globals: globals.node } },
+  { plugins: { js }, extends: ['js/recommended'] },
+  eslintPluginPrettierRecommended
+]);

lib/session.js

@@ -118,7 +118,7 @@ class Session {
       remoteAddress = socket.remoteAddress;
       remotePort = socket.remotePort;
       address = socket.address();
-    } catch (x) {
+    } catch {
       // intentionally empty
     }
 

lib/transport/jsonp-polling.js

@@ -57,7 +57,7 @@ function jsonp_send(req, res, _head, next) {
   if (typeof req.body === 'string') {
     try {
       d = JSON.parse(req.body);
-    } catch (x) {
+    } catch {
       return next({
         status: 500,
         message: 'Broken JSON encoding.'
@@ -69,7 +69,7 @@ function jsonp_send(req, res, _head, next) {
   if (typeof d === 'string' && d) {
     try {
       d = JSON.parse(d);
-    } catch (x) {
+    } catch {
       return next({
         status: 500,
         message: 'Broken JSON encoding.'

lib/transport/response-receiver.js

@@ -15,7 +15,7 @@ class ResponseReceiver extends BaseReceiver {
     this.curr_response_size = 0;
     try {
       this.request.socket.setKeepAlive(true, 5000);
-    } catch (x) {
+    } catch {
       // intentionally empty
     }
   }
@@ -27,7 +27,7 @@ class ResponseReceiver extends BaseReceiver {
     try {
       this.response.write(payload);
       r = true;
-    } catch (x) {
+    } catch {
       // intentionally empty
     }
     if (this.max_response_size && this.curr_response_size >= this.max_response_size) {
@@ -40,7 +40,7 @@ class ResponseReceiver extends BaseReceiver {
     super.close(...arguments);
     try {
       this.response.end();
-    } catch (x) {
+    } catch {
       // intentionally empty
     }
     this.request = null;

lib/transport/websocket-raw.js

@@ -58,7 +58,7 @@ class RawWebsocketSessionReceiver {
     this.ws.removeEventListener('close', this._close);
     try {
       this.ws.close(1000, 'Normal closure', false);
-    } catch (x) {
+    } catch {
       // intentionally empty
     }
     this.ws = null;

lib/transport/websocket.js

@@ -14,7 +14,7 @@ class WebSocketReceiver extends BaseReceiver {
     this.ws = ws;
     try {
       socket.setKeepAlive(true, 5000);
-    } catch (x) {
+    } catch {
       // intentionally empty
     }
     this.ws.once('close', this.abort);
@@ -35,7 +35,7 @@ class WebSocketReceiver extends BaseReceiver {
       let message;
       try {
         message = JSON.parse(payload);
-      } catch (x) {
+      } catch {
         return this.close(3000, 'Broken framing.');
       }
       if (payload[0] === '[') {
@@ -52,7 +52,7 @@ class WebSocketReceiver extends BaseReceiver {
       try {
         this.ws.send(payload);
         return true;
-      } catch (x) {
+      } catch {
         // intentionally empty
       }
     }
@@ -64,7 +64,7 @@ class WebSocketReceiver extends BaseReceiver {
     if (this.ws) {
       try {
         this.ws.close(status, reason, false);
-      } catch (x) {
+      } catch {
         // intentionally empty
       }
     }

lib/transport/xhr.js

@@ -13,7 +13,7 @@ module.exports = {
     let d;
     try {
       d = JSON.parse(req.body);
-    } catch (x) {
+    } catch {
       return next({
         status: 500,
         message: 'Broken JSON encoding.'

lib/utils.js

@@ -18,7 +18,7 @@ module.exports.fake_response = function fake_response(req, res) {
     r.push('');
     try {
       res.write(r.join('\r\n'));
-    } catch (x) {
+    } catch {
       // intentionally empty
     }
   };