Merge pull request #5391 from chrootsu/lodash-zipWith

lodash: added _.zipWith() method

lodash/lodash-tests.ts

@@ -380,6 +380,22 @@ result = <any[][]>_.unzip(['moe', 'larry'], [30, 40], [true, false]);
 result = <any[][]>_(['moe', 'larry']).zip([30, 40], [true, false]).value();
 result = <any[][]>_(['moe', 'larry']).unzip([30, 40], [true, false]).value();
 
+// _.zipWith
+interface TestZipWithFn {
+    (a1: number, a2: number): number;
+}
+var testZipWithFn: TestZipWithFn;
+result = <number[]>_.zipWith<number>([1, 2]);
+result = <number[]>_.zipWith<number>([1, 2], testZipWithFn);
+result = <number[]>_.zipWith<number>([1, 2], testZipWithFn, any);
+result = <number[]>_.zipWith<number>([1, 2], [1, 2], testZipWithFn, any);
+result = <number[]>_.zipWith<number>([1, 2], [1, 2], [1, 2], [1, 2], [1, 2], [1, 2], testZipWithFn, any);
+result = <number[]>_([1, 2]).zipWith<number>().value();
+result = <number[]>_([1, 2]).zipWith<number>(testZipWithFn).value();
+result = <number[]>_([1, 2]).zipWith<number>(testZipWithFn, any).value();
+result = <number[]>_([1, 2]).zipWith<number>([1, 2], testZipWithFn, any).value();
+result = <number[]>_([1, 2]).zipWith<number>([1, 2], [1, 2], [1, 2], [1, 2], [1, 2], testZipWithFn, any).value();
+
 // /* *************
 //  * Collections *
 //  ************* */

lodash/lodash.d.ts

@@ -1979,6 +1979,27 @@ declare module _ {
         object(values?: List<any>): _.LoDashObjectWrapper<Dictionary<any>>;
     }
 
+    //_.zipWith
+    interface LoDashStatic {
+        /**
+         * This method is like _.zip except that it accepts an iteratee to specify how grouped values should be
+         * combined. The iteratee is bound to thisArg and invoked with four arguments: (accumulator, value, index,
+         * group).
+         * @param {...Array} [arrays] The arrays to process.
+         * @param {Function} [iteratee] The function to combine grouped values.
+         * @param {*} [thisArg] The `this` binding of `iteratee`.
+         * @return Returns the new array of grouped elements.
+         */
+        zipWith<TResult>(...args: any[]): TResult[];
+    }
+
+    interface LoDashArrayWrapper<T> {
+        /**
+         * @see _.zipWith
+         */
+        zipWith<TResult>(...args: any[]): LoDashArrayWrapper<TResult>;
+    }
+
     /* *************
      * Collections *
      ************* */