Added overloads for 'map' on tuple types.

Author: DanielRosenwasser

src/lib/es5.d.ts

@@ -1200,6 +1200,30 @@ interface Array<T> {
       * @param thisArg  An object to which the this keyword can refer in the callbackfn function. If thisArg is omitted, undefined is used as the this value.
       */
     forEach(callbackfn: (value: T, index: number, array: T[]) => void, thisArg?: any): void;
+    /**
+      * Calls a defined callback function on each element of an array, and returns an array that contains the results.
+      * @param callbackfn A function that accepts up to three arguments. The map method calls the callbackfn function one time for each element in the array.
+      * @param thisArg An object to which the this keyword can refer in the callbackfn function. If thisArg is omitted, undefined is used as the this value.
+      */
+    map<U>(this: [T, T, T, T, T], callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any): [U, U, U, U, U];
+    /**
+      * Calls a defined callback function on each element of an array, and returns an array that contains the results.
+      * @param callbackfn A function that accepts up to three arguments. The map method calls the callbackfn function one time for each element in the array.
+      * @param thisArg An object to which the this keyword can refer in the callbackfn function. If thisArg is omitted, undefined is used as the this value.
+      */
+    map<U>(this: [T, T, T, T], callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any): [U, U, U, U];
+    /**
+      * Calls a defined callback function on each element of an array, and returns an array that contains the results.
+      * @param callbackfn A function that accepts up to three arguments. The map method calls the callbackfn function one time for each element in the array.
+      * @param thisArg An object to which the this keyword can refer in the callbackfn function. If thisArg is omitted, undefined is used as the this value.
+      */
+    map<U>(this: [T, T, T], callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any): [U, U, U];
+    /**
+      * Calls a defined callback function on each element of an array, and returns an array that contains the results.
+      * @param callbackfn A function that accepts up to three arguments. The map method calls the callbackfn function one time for each element in the array.
+      * @param thisArg An object to which the this keyword can refer in the callbackfn function. If thisArg is omitted, undefined is used as the this value.
+      */
+    map<U>(this: [T, T], callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any): [U, U];
     /**
       * Calls a defined callback function on each element of an array, and returns an array that contains the results.
       * @param callbackfn A function that accepts up to three arguments. The map method calls the callbackfn function one time for each element in the array.