node_modules: update (#338)

Co-authored-by: dawidd6 <9713907+dawidd6@users.noreply.github.com>

node_modules/nodemailer/dist/cjs/smtp-pool/pool-resource.js

@@ -66,7 +66,7 @@ class PoolResource extends node_events_1.EventEmitter {
                         method: 'XOAUTH2'
                     };
                     oauth2.on('token', (token) => this.pool.mailer.emit('token', token));
-                    oauth2.on('error', err => this.emit('error', err));
+                    oauth2.on('error', err => this._fail(err));
                     break;
                 }
                 default:
@@ -89,6 +89,19 @@ class PoolResource extends node_events_1.EventEmitter {
         this._connected = false;
         this.messages = 0;
         this.available = true;
+        this._failed = false;
+    }
+    /**
+     * Emits 'error' for the first failure only. A dead resource can report the same failure more
+     * than once (the connection error, then the send callback), the pool handles it once
+     * @internal
+     */
+    _fail(err) {
+        if (this._failed) {
+            return;
+        }
+        this._failed = true;
+        this.emit('error', err);
     }
     /**
      * Initiates a connection to the SMTP server
@@ -101,7 +114,7 @@ class PoolResource extends node_events_1.EventEmitter {
                 // nothing was connected, so no 'close' event is coming that would free the
                 // slot this resource holds in the pool, report the failure the way a failed
                 // login does
-                this.emit('error', err);
+                this._fail(err);
                 return callback(err);
             }
             let returned = false;
@@ -118,8 +131,8 @@ class PoolResource extends node_events_1.EventEmitter {
                 options = Object.assign((0, index_js_2.assign)(false, options), socketOptions);
             }
             this.connection = new index_js_1.default(options);
-            this.connection.once('error', err => {
-                this.emit('error', err);
+            this.connection.on('error', err => {
+                this._fail(err);
                 if (returned) {
                     return;
                 }
@@ -128,31 +141,16 @@ class PoolResource extends node_events_1.EventEmitter {
             });
             this.connection.once('end', () => {
                 this.close();
+                returned = true;
+            });
+            this.connection.connect(err => {
                 if (returned) {
                     return;
                 }
-                returned = true;
-                const timer = setTimeout(() => {
-                    if (returned) {
-                        return;
-                    }
-                    // still have not returned, this means we have an unexpected connection close
-                    const err = new Error('Unexpected socket close');
-                    if (this.connection && this.connection.upgrading) {
-                        // starttls connection errors
-                        err.code = errors.ETLS;
-                    }
-                    callback(err);
-                }, 1000);
-                try {
-                    timer.unref();
-                }
-                catch (_E) {
-                    // Ignore. Happens on envs with non-node timer implementation
-                }
-            });
-            this.connection.connect(() => {
-                if (returned) {
+                if (err) {
+                    // a close before the greeting, the 'end' that follows closes this resource
+                    // and the pool requeues or fails the entry, bounded by maxRequeues
+                    returned = true;
                     return;
                 }
                 if (this.auth && (this.connection.allowsAuth || options.forceAuth)) {
@@ -163,7 +161,7 @@ class PoolResource extends node_events_1.EventEmitter {
                         returned = true;
                         if (err) {
                             this.connection.close();
-                            this.emit('error', err);
+                            this._fail(err);
                             return callback(err);
                         }
                         this._connected = true;
@@ -215,7 +213,7 @@ class PoolResource extends node_events_1.EventEmitter {
             this.messages++;
             if (err) {
                 this.connection.close();
-                this.emit('error', err);
+                this._fail(err);
                 return callback(err);
             }
             info.envelope = {
@@ -228,7 +226,7 @@ class PoolResource extends node_events_1.EventEmitter {
                     const err = new Error('Resource exhausted');
                     err.code = errors.EMAXLIMIT;
                     this.connection.close();
-                    this.emit('error', err);
+                    this._fail(err);
                 }
                 else {
                     this.pool._checkRateLimit(() => {