lodash: signatures of _.findLastKey have been changed

lodash/lodash-tests.ts

@@ -6117,10 +6117,9 @@ module TestFindKey {
 
 // _.findLastKey
 module TestFindLastKey {
-    let result: string;
-
     {
         let predicateFn: (value: any, key?: string, object?: {}) => boolean;
+        let result: string;
 
         result = _.findLastKey<{a: string;}>({a: ''});
 
@@ -6147,6 +6146,7 @@ module TestFindLastKey {
 
     {
         let predicateFn: (value: string, key?: string, collection?: _.Dictionary<string>) => boolean;
+        let result: string;
 
         result = _.findLastKey<string, {a: string;}>({a: ''}, predicateFn);
         result = _.findLastKey<string, {a: string;}>({a: ''}, predicateFn, any);
@@ -6154,6 +6154,30 @@ module TestFindLastKey {
         result = _<{a: string;}>({a: ''}).findLastKey<string>(predicateFn);
         result = _<{a: string;}>({a: ''}).findLastKey<string>(predicateFn, any);
     }
+
+    {
+        let predicateFn: (value: any, key?: string, object?: {}) => boolean;
+        let result: _.LoDashExplicitWrapper<string>;
+
+        result = _<{a: string;}>({a: ''}).chain().findLastKey();
+
+        result = _<{a: string;}>({a: ''}).chain().findLastKey(predicateFn);
+        result = _<{a: string;}>({a: ''}).chain().findLastKey(predicateFn, any);
+
+
+        result = _<{a: string;}>({a: ''}).chain().findLastKey('');
+        result = _<{a: string;}>({a: ''}).chain().findLastKey('', any);
+
+        result = _<{a: string;}>({a: ''}).chain().findLastKey<{a: number;}>({a: 42});
+    }
+
+    {
+        let predicateFn: (value: string, key?: string, collection?: _.Dictionary<string>) => boolean;
+        let result: _.LoDashExplicitWrapper<string>;
+
+        result = _<{a: string;}>({a: ''}).chain().findLastKey<string>(predicateFn);
+        result = _<{a: string;}>({a: ''}).chain().findLastKey<string>(predicateFn, any);
+    }
 }
 
 // _.forIn

lodash/lodash.d.ts

@@ -10544,6 +10544,39 @@ declare module _ {
         ): string;
     }
 
+    interface LoDashExplicitObjectWrapper<T> {
+        /**
+         * @see _.findLastKey
+         */
+        findLastKey<TValues>(
+            predicate?: DictionaryIterator<TValues, boolean>,
+            thisArg?: any
+        ): LoDashExplicitWrapper<string>;
+
+        /**
+         * @see _.findLastKey
+         */
+        findLastKey(
+            predicate?: ObjectIterator<any, boolean>,
+            thisArg?: any
+        ): LoDashExplicitWrapper<string>;
+
+        /**
+         * @see _.findLastKey
+         */
+        findLastKey(
+            predicate?: string,
+            thisArg?: any
+        ): LoDashExplicitWrapper<string>;
+
+        /**
+         * @see _.findLastKey
+         */
+        findLastKey<TWhere extends Dictionary<any>>(
+            predicate?: TWhere
+        ): LoDashExplicitWrapper<string>;
+    }
+
     //_.forIn
     interface LoDashStatic {
         /**