From 89202afe2bb45a7a646aaa8906b279262ebb941f Mon Sep 17 00:00:00 2001
From: alec-mccormick <alec.s.mccormick@gmail.com>
Date: Tue, 30 Jul 2019 17:11:49 -0700
Subject: [PATCH] Allow values to be 'null' for types with a defined custom
 wrapper

---
 src/converter.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/converter.js b/src/converter.js
index 44d952e61..2bd590fa6 100644
--- a/src/converter.js
+++ b/src/converter.js
@@ -6,7 +6,8 @@
 var converter = exports;
 
 var Enum = require("./enum"),
-    util = require("./util");
+    util = require("./util"),
+    wrappers = require("./wrappers");
 
 /**
  * Generates a partial value fromObject conveter.
@@ -129,7 +130,11 @@ converter.fromObject = function fromObject(mtype) {
             genValuePartial_fromObject(gen, field, /* not sorted */ i, prop + "[i]")
         ("}")
     ("}");
-
+        // Wrapper fields
+        } else if (field.resolvedType && wrappers[field.resolvedType.fullName]) { gen
+    ("if(typeof d%s!==\"undefined\"){", prop);
+        genValuePartial_fromObject(gen, field, /* not sorted */ i, prop)
+    ("}");
         // Non-repeated fields
         } else {
             if (!(field.resolvedType instanceof Enum)) gen // no need to test for null/undefined if an enum (uses switch)