From 63877da56fa2f75596ac0e5f6e9a63ab344f3909 Mon Sep 17 00:00:00 2001
From: andreasrueedlinger <ruud@ruudBook.local>
Date: Fri, 14 Oct 2016 21:33:55 +0200
Subject: [PATCH] Fixes #391

---
 src/serializers/text/binding_serializer.ts | 4 ++--
 test/index.test.ts                         | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/serializers/text/binding_serializer.ts b/src/serializers/text/binding_serializer.ts
index 864d3f7..069c997 100644
--- a/src/serializers/text/binding_serializer.ts
+++ b/src/serializers/text/binding_serializer.ts
@@ -20,7 +20,7 @@ function serializeBinding(
     let _b: any = binding;
 
     props.forEach((prop) => {
-        if (_b[prop] !== undefined && _b[prop] !== null) {
+        if (_b[prop] !== undefined) {
             let val: any = _b[prop];
             switch (prop) {
                 case "type":
@@ -30,7 +30,7 @@ function serializeBinding(
                     val = scopeFormatter(_b[prop]);
                     break;
                 case "implementationType":
-                    val = _b[prop].name;
+                    val = _b[prop] && _b[prop].name;
                     break;
                 case "serviceIdentifier":
                     val = serviceIdentifierFormatter(_b[prop]);
diff --git a/test/index.test.ts b/test/index.test.ts
index 5c55e73..bfb5112 100644
--- a/test/index.test.ts
+++ b/test/index.test.ts
@@ -532,6 +532,7 @@ describe("makeLoggerMiddleware", () => {
         "        └── bindings\n" +
         "            └── Binding<Symbol(MyStringValue)> : 0\n" +
         "                └── type : ConstantValue\n" +
+        "                └── implementationType : null\n" +
         "                └── scope : Transient\n";
 
         let lines = out.split("└── ")