v8: add a js class for Serializer/Dserializer

Calling Serializer/Deserializer without new crashes node.
Adding a js class which just inherits cpp bindings.
Added regression tests.

Fixes: https://github.com/nodejs/node/issues/13326
PR-URL: https://github.com/nodejs/node/pull/13541
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

lib/v8.js

@@ -15,11 +15,21 @@
 'use strict';
 
 const { Buffer } = require('buffer');
-const { Serializer, Deserializer } = process.binding('serdes');
+const {
+  Serializer: _Serializer,
+  Deserializer: _Deserializer
+} = process.binding('serdes');
 const { copy } = process.binding('buffer');
 const { objectToString } = require('internal/util');
 const { FastBuffer } = require('internal/buffer');
 
+// Calling exposed c++ functions directly throws exception as it expected to be
+// called with new operator and caused an assert to fire.
+// Creating JS wrapper so that it gets caught at JS layer.
+class Serializer extends _Serializer { }
+
+class Deserializer extends _Deserializer { }
+
 const {
   cachedDataVersionTag,
   setFlagsFromString,

test/parallel/test-v8-serdes.js

@@ -131,3 +131,15 @@ const objects = [
 
   assert.deepStrictEqual(v8.deserialize(buf), expectedResult);
 }
+
+{
+  assert.throws(
+    () => { v8.Serializer(); },
+    /^TypeError: Class constructor Serializer cannot be invoked without 'new'$/
+  );
+
+  assert.throws(
+    () => { v8.Deserializer(); },
+    /^TypeError: Class constructor Deserializer cannot be invoked without 'new'$/
+  );
+}