fromObject does not check for nullables when mapping about protoc-gen-ts HOT 3 CLOSED

diff --git a/src/descriptor.ts b/src/descriptor.ts
index f70441d..e9d53b5 100644
--- a/src/descriptor.ts
+++ b/src/descriptor.ts
@@ -188,10 +188,17 @@ function createFromObject(
             [ts.factory.createIdentifier("item")],
           ),
         );
-        assignmentExpr = ts.factory.createCallExpression(
-          ts.factory.createPropertyAccessExpression(assignmentExpr, "map"),
-          undefined,
-          [arrowFunc],
+        assignmentExpr = ts.factory.createBinaryExpression(
+          ts.factory.createCallExpression(
+            ts.factory.createPropertyAccessChain(assignmentExpr, ts.factory.createToken(ts.SyntaxKind.QuestionDotToken), "map"),
+            undefined,
+            [arrowFunc],
+          ),
+          ts.factory.createToken(ts.SyntaxKind.QuestionQuestionToken),
+          ts.factory.createArrayLiteralExpression(
+            [],
+            false
+          )
         );
       } else {
         assignmentExpr = ts.factory.createCallExpression(