Merge pull request #5156 from chrootsu/lodash-curry-curryRight

lodash: changed _.curry() and added _.curryRight() methods

lodash/lodash-tests.ts

@@ -813,13 +813,25 @@ result = <() => boolean>_.createCallback(createCallbackObj);
 result = <_.LoDashObjectWrapper<() => any>>_('name').createCallback();
 result = <_.LoDashObjectWrapper<() => boolean>>_(createCallbackObj).createCallback();
 
-result = <Function>_.curry(function (a: any, b: any, c: any) {
-    console.log(a + b + c);
-});
+// _.curry
+var testCurryFn = (a: number, b: number, c: number) => [a, b, c];
+interface TestCurryResultFn {
+    (...args: number[]): number[] | TestCurryResultFn;
+}
+result = <number[]>_.curry<TestCurryResultFn>(testCurryFn)(1, 2, 3);
+result = <TestCurryResultFn>_.curry<TestCurryResultFn>(testCurryFn)(1);
+result = <number[]>_(testCurryFn).curry<TestCurryResultFn>().value()(1, 2, 3);
+result = <TestCurryResultFn>_(testCurryFn).curry<TestCurryResultFn>().value()(1);
 
-result = <_.LoDashObjectWrapper<Function>>_(function (a: any, b: any, c: any) {
-    console.log(a + b + c);
-}).curry();
+// _.curryRight
+var testCurryRightFn = (a: number, b: number, c: number) => [a, b, c];
+interface TestCurryRightResultFn {
+    (...args: number[]): number[] | TestCurryRightResultFn;
+}
+result = <number[]>_.curryRight<TestCurryRightResultFn>(testCurryRightFn)(1, 2, 3);
+result = <TestCurryRightResultFn>_.curryRight<TestCurryRightResultFn>(testCurryRightFn)(1);
+result = <number[]>_(testCurryRightFn).curryRight<TestCurryRightResultFn>().value()(1, 2, 3);
+result = <TestCurryRightResultFn>_(testCurryRightFn).curryRight<TestCurryRightResultFn>().value()(1);
 
 declare var source: any;
 result = <Function>_.debounce(function () { }, 150);

lodash/lodash.d.ts

@@ -5335,24 +5335,44 @@ declare module _ {
     //_.curry
     interface LoDashStatic {
         /**
-        * Creates a function which accepts one or more arguments of func that when invoked either
-        * executes func returning its result, if all func arguments have been provided, or returns
-        * a function that accepts one or more of the remaining func arguments, and so on. The arity
-        * of func can be specified if func.length is not sufficient.
-        * @param func The function to curry.
-        * @param arity The arity of func.
-        * @return The new curried function.
-        **/
-        curry(
+         * Creates a function that accepts one or more arguments of func that when called either invokes func returning
+         * its result, if all func arguments have been provided, or returns a function that accepts one or more of the
+         * remaining func arguments, and so on. The arity of func may be specified if func.length is not sufficient.
+         * @param func The function to curry.
+         * @param arity The arity of func.
+         * @return Returns the new curried function.
+         */
+        curry<TResult extends Function>(
             func: Function,
-            arity?: number): Function;
+            arity?: number): TResult;
     }
 
     interface LoDashObjectWrapper<T> {
         /**
         * @see _.curry
         **/
-        curry(arity?: number): LoDashObjectWrapper<Function>;
+        curry<TResult extends Function>(arity?: number): LoDashObjectWrapper<TResult>;
+    }
+
+    //_.curryRight
+    interface LoDashStatic {
+        /**
+         * This method is like _.curry except that arguments are applied to func in the manner of _.partialRight
+         * instead of _.partial.
+         * @param func The function to curry.
+         * @param arity The arity of func.
+         * @return Returns the new curried function.
+         */
+        curryRight<TResult extends Function>(
+            func: Function,
+            arity?: number): TResult;
+    }
+
+    interface LoDashObjectWrapper<T> {
+        /**
+         * @see _.curryRight
+         **/
+        curryRight<TResult extends Function>(arity?: number): LoDashObjectWrapper<TResult>;
     }
 
     //_.debounce