From 93019be80ea5edbfa5062a7d2fc6c58a42c453fc Mon Sep 17 00:00:00 2001
From: pbb <pbborel@vente-privee.com>
Date: Thu, 25 Feb 2021 17:26:07 +0100
Subject: [PATCH 1/2] fix: manage object type on format

---
 index.js | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/index.js b/index.js
index 24c2d90..2b985eb 100644
--- a/index.js
+++ b/index.js
@@ -88,7 +88,10 @@ TransportStream.prototype._write = function _write(info, enc, callback) {
     // We trap(and re-throw) any errors generated by the user-provided format, but also
     // guarantee that the streams callback is invoked so that we can continue flowing.
     try {
-      transformed = this.format.transform(Object.assign({}, info), this.format.options);
+      transformed = this.format.transform(
+        cloneObj(info),
+        this.format.options
+      );
     } catch (err) {
       errState = err;
     }
@@ -142,7 +145,7 @@ TransportStream.prototype._writev = function _writev(chunks, callback) {
     // guarantee that the streams callback is invoked so that we can continue flowing.
     try {
       transformed = this.format.transform(
-        Object.assign({}, chunks[i].chunk),
+        cloneObj(chunks[i].chunk),
         this.format.options
       );
     } catch (err) {
@@ -201,6 +204,18 @@ TransportStream.prototype._accept = function _accept(write) {
   return false;
 };
 
+function cloneObj(obj) {
+  const clonedObj = {};
+
+  Object.getOwnPropertyNames(obj).forEach((propName) => {
+    Object.defineProperty(clonedObj, propName, Object.getOwnPropertyDescriptor(obj, propName));
+  });
+
+  Object.setPrototypeOf(clonedObj, Object.getPrototypeOf(obj));
+
+  return clonedObj;
+}
+
 /**
  * _nop is short for "No operation"
  * @returns {Boolean} Intentionally false.

From 357aa2336dcfb060cd4b4ec27dd1b06bc77718b0 Mon Sep 17 00:00:00 2001
From: pbb <pbborel@vente-privee.com>
Date: Thu, 25 Feb 2021 18:09:23 +0100
Subject: [PATCH 2/2] fix: copy symbol

---
 index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 2b985eb..bca6854 100644
--- a/index.js
+++ b/index.js
@@ -207,7 +207,7 @@ TransportStream.prototype._accept = function _accept(write) {
 function cloneObj(obj) {
   const clonedObj = {};
 
-  Object.getOwnPropertyNames(obj).forEach((propName) => {
+  Object.getOwnPropertyNames(obj).concat(Object.getOwnPropertySymbols(obj)).forEach((propName) => {
     Object.defineProperty(clonedObj, propName, Object.getOwnPropertyDescriptor(obj, propName));
   });