Merge pull request #5073 from chrootsu/lodash-modArgs

lodash: added _.modArgs() method

lodash/lodash-tests.ts

@@ -857,6 +857,27 @@ stooge('curly');
 var returnedMemoize = _.throttle(function (a: any) { return a * 5; }, 5);
 returnedMemoize(4);
 
+// _.modArgs
+function modArgsFn1(n: number): string {return n.toString()}
+function modArgsFn2(n: boolean): string {return n.toString()}
+interface ModArgsFunc {
+    (x: string, y: string): string[];
+}
+interface ModArgsResult {
+    (x: number, y: boolean): string[]
+}
+result = <ModArgsResult>_.modArgs<ModArgsFunc, ModArgsResult>((x: string, y: string) => [x, y], modArgsFn1, modArgsFn2);
+result = <string[]>result(1, true);
+
+result = <ModArgsResult>_.modArgs<ModArgsFunc, ModArgsResult>((x: string, y: string) => [x, y], [modArgsFn1, modArgsFn2]);
+result = <string[]>result(1, true);
+
+result = <ModArgsResult>_<ModArgsFunc>((x: string, y: string) => [x, y]).modArgs<ModArgsResult>(modArgsFn1, modArgsFn2).value();
+result = <string[]>result(1, true);
+
+result = <ModArgsResult>_<ModArgsFunc>((x: string, y: string) => [x, y]).modArgs<ModArgsResult>([modArgsFn1, modArgsFn2]).value();
+result = <string[]>result(1, true);
+
 var initialize = _.once(function () { });
 initialize();
 initialize();''

lodash/lodash.d.ts

@@ -5386,6 +5386,41 @@ declare module _ {
             resolver?: Function): T;
     }
 
+    //_.modArgs
+    interface LoDashStatic {
+        /**
+         * Creates a function that runs each argument through a corresponding transform function.
+         * @param func The function to wrap.
+         * @param transforms The functions to transform arguments, specified as individual functions or arrays
+         * of functions.
+         * @return Returns the new function.
+         */
+        modArgs<T extends Function, TResult extends Function>(
+            func: T,
+            ...transforms: Function[]
+        ): TResult;
+
+        /**
+         * @see _.modArgs
+         */
+        modArgs<T extends Function, TResult extends Function>(
+            func: T,
+            transforms: Function[]
+        ): TResult;
+    }
+
+    interface LoDashObjectWrapper<T> {
+        /**
+         * @see _.modArgs
+         */
+        modArgs<TResult>(...transforms: Function[]): LoDashObjectWrapper<TResult>;
+
+        /**
+         * @see _.modArgs
+         */
+        modArgs<TResult>(transforms: Function[]): LoDashObjectWrapper<TResult>;
+    }
+
     //_.once
     interface LoDashStatic {
         /**