Merge pull request #5929 from chrootsu/lodash-dropRight

lodash: added _.dropRight() method

lodash/lodash-tests.ts

@@ -208,6 +208,21 @@ result = <_.LoDashArrayWrapper<any>>_([0, 1, false, 2, '', 3]).compact();
     result = _(testDropList).drop<TResult>(42).value();
 }
 
+// _.dropRight
+module TestDropRight {
+    let array: TResult[];
+    let list: _.List<TResult>;
+    let result: TResult[];
+    result = _.dropRight<TResult>(array);
+    result = _.dropRight<TResult>(array, 42);
+    result = _.dropRight<TResult>(list);
+    result = _.dropRight<TResult>(list, 42);
+    result = _(array).dropRight().value();
+    result = _(array).dropRight(42).value();
+    result = _(list).dropRight<TResult>().value();
+    result = _(list).dropRight<TResult>(42).value();
+}
+
 result = <number[]>_.rest([1, 2, 3]);
 result = <number[]>_.rest([1, 2, 3], 2);
 result = <number[]>_.rest([1, 2, 3], (num) => num < 3)

lodash/lodash.d.ts

@@ -419,6 +419,35 @@ declare module _ {
         drop<TResult>(n?: number): LoDashArrayWrapper<TResult>;
     }
 
+    //_.dropRight
+    interface LoDashStatic {
+        /**
+         * Creates a slice of array with n elements dropped from the end.
+         *
+         * @param array The array to query.
+         * @param n The number of elements to drop.
+         * @return Returns the slice of array.
+         */
+        dropRight<T>(
+            array: List<T>,
+            n?: number
+        ): T[];
+    }
+
+    interface LoDashArrayWrapper<T> {
+        /**
+         * @see _.dropRight
+         */
+        dropRight(n?: number): LoDashArrayWrapper<T>;
+    }
+
+    interface LoDashObjectWrapper<T> {
+        /**
+         * @see _.dropRight
+         */
+        dropRight<TResult>(n?: number): LoDashArrayWrapper<TResult>;
+    }
+
     //_.findIndex
     interface LoDashStatic {
         /**