From 2acc0fe641631c727d91fa20ff73f52ed54ee2b0 Mon Sep 17 00:00:00 2001
From: Ilya Mochalov <chrootsu@gmail.com>
Date: Sat, 28 Nov 2015 09:36:59 +0500
Subject: [PATCH] lodash: signatures of _.isNull have been changed

---
 lodash/lodash-tests.ts | 23 +++++++++++++++++++----
 lodash/lodash.d.ts     | 10 +++++++++-
 2 files changed, 28 insertions(+), 5 deletions(-)

diff --git a/lodash/lodash-tests.ts b/lodash/lodash-tests.ts
index bdc08ccdc7..af4f246c58 100644
--- a/lodash/lodash-tests.ts
+++ b/lodash/lodash-tests.ts
@@ -5092,10 +5092,25 @@ result = <boolean>_(Array.prototype.push).isNative();
 }
 
 // _.isNull
-result = <boolean>_.isNull(any);
-result = <boolean>_(1).isNull();
-result = <boolean>_<any>([]).isNull();
-result = <boolean>_({}).isNull();
+module TestIsNull {
+    {
+        let result: boolean;
+
+        result = _.isNull(any);
+
+        result = _(1).isNull();
+        result = _<any>([]).isNull();
+        result = _({}).isNull();
+    }
+
+    {
+        let result: _.LoDashExplicitWrapper<boolean>;
+
+        result = _(1).chain().isNull();
+        result = _<any>([]).chain().isNull();
+        result = _({}).chain().isNull();
+    }
+}
 
 // _.isNumber
 result = <boolean>_.isNumber(any);
diff --git a/lodash/lodash.d.ts b/lodash/lodash.d.ts
index ad465c5c39..e6da5f334e 100644
--- a/lodash/lodash.d.ts
+++ b/lodash/lodash.d.ts
@@ -8919,9 +8919,10 @@ declare module _ {
     interface LoDashStatic {
         /**
          * Checks if value is null.
+         *
          * @param value The value to check.
          * @return Returns true if value is null, else false.
-         **/
+         */
         isNull(value?: any): boolean;
     }
 
@@ -8932,6 +8933,13 @@ declare module _ {
         isNull(): boolean;
     }
 
+    interface LoDashExplicitWrapperBase<T, TWrapper> {
+        /**
+         * see _.isNull
+         */
+        isNull(): LoDashExplicitWrapper<boolean>;
+    }
+
     //_.isNumber
     interface LoDashStatic {
         /**