Merge pull request #7818 from chrootsu/lodash-nthArg

lodash: _.nthArg added

lodash/lodash-tests.ts

@@ -9953,6 +9953,29 @@ module TestNoop {
     }
 }
 
+namespace TestNthArg {
+    type SampleFunc = (...args: any[]) => any;
+
+    {
+        let result: SampleFunc;
+
+        result = _.nthArg<SampleFunc>();
+        result = _.nthArg<SampleFunc>(1);
+    }
+
+    {
+        let result: _.LoDashImplicitObjectWrapper<SampleFunc>;
+
+        result = _(1).nthArg<SampleFunc>();
+    }
+
+    {
+        let result: _.LoDashExplicitObjectWrapper<SampleFunc>;
+
+        result = _(1).chain().nthArg<SampleFunc>();
+    }
+}
+
 // _.over
 namespace TestOver {
     {

lodash/lodash.d.ts

@@ -16308,6 +16308,31 @@ declare module _ {
         noop(...args: any[]): _.LoDashExplicitWrapper<void>;
     }
 
+    //_.nthArg
+    interface LoDashStatic {
+        /**
+         * Creates a function that returns its nth argument.
+         *
+         * @param n The index of the argument to return.
+         * @return Returns the new function.
+         */
+        nthArg<TResult extends Function>(n?: number): TResult;
+    }
+
+    interface LoDashImplicitWrapper<T> {
+        /**
+         * @see _.nthArg
+         */
+        nthArg<TResult extends Function>(): LoDashImplicitObjectWrapper<TResult>;
+    }
+
+    interface LoDashExplicitWrapper<T> {
+        /**
+         * @see _.nthArg
+         */
+        nthArg<TResult extends Function>(): LoDashExplicitObjectWrapper<TResult>;
+    }
+
     //_.over
     interface LoDashStatic {
         /**