nodejs
diff --git a/‎lib/internal/js_stream_socket.js‎
Lines changed: 3 additions & 0 deletions b/‎lib/internal/js_stream_socket.js‎
Lines changed: 3 additions & 0 deletions
@@ -149,6 +149,7 @@ class JSStreamSocket extends Socket {
     }
 
     const handle = this._handle;
+    assert(handle !== null);
 
     process.nextTick(() => {
       // Ensure that write is dispatched asynchronously.
@@ -181,6 +182,8 @@ class JSStreamSocket extends Socket {
     }
 
     const handle = this._handle;
+    assert(handle !== null);
+
     const self = this;
 
     let pending = bufs.length;
Original file line number	Diff line number	Diff line change
@@ -149,6 +149,7 @@ class JSStreamSocket extends Socket {
149	149	}
150	150
151	151	const handle = this._handle;
	152	+ assert(handle !== null);
152	153
153	154	process.nextTick(() => {
154	155	// Ensure that write is dispatched asynchronously.
@@ -181,6 +182,8 @@ class JSStreamSocket extends Socket {
181	182	}
182	183
183	184	const handle = this._handle;
	185	+ assert(handle !== null);
	186	+
184	187	const self = this;
185	188
186	189	let pending = bufs.length;