Fixes contains searching keys instead of values on objects, also adds "includes" alias.

lodash/lodash-tests.ts

@@ -363,14 +363,19 @@ result = <string[]>_.at(['moe', 'larry', 'curly'], 0, 2);
 
 result = <boolean>_.contains([1, 2, 3], 1);
 result = <boolean>_.contains([1, 2, 3], 1, 2);
-result = <boolean>_.contains({ 'name': 'moe', 'age': 40 }, 'moe');
+result = <boolean>_.contains({ 'moe': 30, 'larry': 40, 'curly': 67 }, 40);
 result = <boolean>_.contains('curly', 'ur');
 
 result = <boolean>_.include([1, 2, 3], 1);
 result = <boolean>_.include([1, 2, 3], 1, 2);
-result = <boolean>_.include({ 'name': 'moe', 'age': 40 }, 'moe');
+result = <boolean>_.include({ 'moe': 30, 'larry': 40, 'curly': 67 }, 40);
 result = <boolean>_.include('curly', 'ur');
 
+result = <boolean>_.includes([1, 2, 3], 1);
+result = <boolean>_.includes([1, 2, 3], 1, 2);
+result = <boolean>_.includes({ 'moe': 30, 'larry': 40, 'curly': 67 }, 40);
+result = <boolean>_.includes('curly', 'ur');
+
 result = <_.Dictionary<number>>_.countBy([4.3, 6.1, 6.4], function (num) { return Math.floor(num); });
 result = <_.Dictionary<number>>_.countBy([4.3, 6.1, 6.4], function (num) { return this.floor(num); }, Math);
 result = <_.Dictionary<number>>_.countBy(['one', 'two', 'three'], 'length');

lodash/lodash.d.ts

@@ -2198,11 +2198,11 @@ declare module _ {
         /**
         * @see _.contains
         * @param dictionary The dictionary to iterate over.
-        * @param key The key in the dictionary to search for.
+        * @param value The value in the dictionary to search for.
         **/
         contains<T>(
             dictionary: Dictionary<T>,
-            key: string,
+            value: T,
             fromIndex?: number): boolean;
 
         /**
@@ -2236,7 +2236,7 @@ declare module _ {
         **/
         include<T>(
             dictionary: Dictionary<T>,
-            key: string,
+            value: T,
             fromIndex?: number): boolean;
 
         /**
@@ -2246,6 +2246,38 @@ declare module _ {
             searchString: string,
             targetString: string,
             fromIndex?: number): boolean;
+
+        /**
+        * @see _.contains
+        **/
+        includes<T>(
+            collection: Array<T>,
+            target: T,
+            fromIndex?: number): boolean;
+
+        /**
+        * @see _.contains
+        **/
+        includes<T>(
+            collection: List<T>,
+            target: T,
+            fromIndex?: number): boolean;
+
+        /**
+        * @see _.contains
+        **/
+        includes<T>(
+            dictionary: Dictionary<T>,
+            value: T,
+            fromIndex?: number): boolean;
+
+        /**
+        * @see _.contains
+        **/
+        includes(
+            searchString: string,
+            targetString: string,
+            fromIndex?: number): boolean;
     }
 
     //_.countBy