Update Fix

node_modules/mysql2/lib/base/connection.js

@@ -21,7 +21,7 @@ const Timers = require('timers');
 const EventEmitter = require('events').EventEmitter;
 const Readable = require('stream').Readable;
 const Queue = require('denque');
-const SqlString = require('sqlstring');
+const SqlString = require('sql-escaper');
 const { createLRU } = require('lru.min');
 const PacketParser = require('../packet_parser.js');
 const Packets = require('../packets/index.js');
@@ -835,27 +835,31 @@ class BaseConnection extends EventEmitter {
     if (!cb) {
       return;
     }
+
     if (this._fatalError || this._protocolError) {
       return cb(this._fatalError || this._protocolError);
     }
+
     if (this._handshakePacket) {
       return cb(null, this);
     }
-    let connectCalled = 0;
-    function callbackOnce(isErrorHandler) {
-      return function (param) {
-        if (!connectCalled) {
-          if (isErrorHandler) {
-            cb(param);
-          } else {
-            cb(null, param);
-          }
-        }
-        connectCalled = 1;
-      };
-    }
-    this.once('error', callbackOnce(true));
-    this.once('connect', callbackOnce(false));
+
+    /* eslint-disable prefer-const */
+    let onError, onConnect;
+
+    onError = (param) => {
+      this.removeListener('connect', onConnect);
+      cb(param);
+    };
+
+    onConnect = (param) => {
+      this.removeListener('error', onError);
+      cb(null, param);
+    };
+    /* eslint-enable prefer-const */
+
+    this.once('error', onError);
+    this.once('connect', onConnect);
   }
 
   // ===================================
@@ -922,6 +926,12 @@ class BaseConnection extends EventEmitter {
     return this.addCommand(new Commands.ServerHandshake(args));
   }
 
+  [Symbol.dispose]() {
+    if (!this._closing) {
+      this.end();
+    }
+  }
+
   // ===============================================================
   end(callback) {
     if (this.config.isServer) {