diff --git a/del/del-tests.ts b/del/del-tests.ts
index b0dd984349..867781d63d 100644
--- a/del/del-tests.ts
+++ b/del/del-tests.ts
@@ -7,11 +7,11 @@ del(["tmp/*.js", "!tmp/unicorn.js"]);
 
 del(["tmp/*.js", "!tmp/unicorn.js"], {force: true});
 
-del(["tmp/*.js", "!tmp/unicorn.js"], (err, paths) => {
+del(["tmp/*.js", "!tmp/unicorn.js"]).then((paths: string[]) => {
     console.log('Deleted files/folders:\n', paths.join('\n'));
 });
 
-del(["tmp/*.js", "!tmp/unicorn.js"], {force: true}, (err, paths) => {
+del(["tmp/*.js", "!tmp/unicorn.js"], {force: true}).then((paths: string[]) => {
     console.log('Deleted files/folders:\n', paths.join('\n'));
 });
 
@@ -19,18 +19,19 @@ del("tmp/*.js");
 
 del("tmp/*.js", {force: true});
 
-del("tmp/*.js", (err, paths) => {
+del("tmp/*.js").then((paths: string[]) => {
     console.log('Deleted files/folders:\n', paths.join('\n'));
 });
 
-del("tmp/*.js", {force: true}, (err, paths) => {
+del("tmp/*.js", {force: true}).then((paths: string[]) => {
     console.log('Deleted files/folders:\n', paths.join('\n'));
 });
 
-del.sync(["tmp/*.js", "!tmp/unicorn.js"]);
+var paths: string[];
+paths = del.sync(["tmp/*.js", "!tmp/unicorn.js"]);
 
-del.sync(["tmp/*.js", "!tmp/unicorn.js"], {force: true});
+paths = del.sync(["tmp/*.js", "!tmp/unicorn.js"], {force: true});
 
-del.sync("tmp/*.js");
+paths = del.sync("tmp/*.js");
 
-del.sync("tmp/*.js", {force: true});
+paths = del.sync("tmp/*.js", {force: true});
diff --git a/del/del.d.ts b/del/del.d.ts
index b20bac92ce..060861d8a1 100644
--- a/del/del.d.ts
+++ b/del/del.d.ts
@@ -4,23 +4,20 @@
 // Definitions: https://github.com/borisyankov/DefinitelyTyped
 
 /// <reference path="../glob/glob.d.ts"/>
+/// <reference path="../es6-promise/es6-promise.d.ts" />
 
 declare module "del" {
     import glob = require("glob");
 
-    function Del(pattern: string): void;
-    function Del(pattern: string, options: Del.Options): void;
-    function Del(pattern: string, callback: (err: Error, deletedFiles: string[]) => any): void;
-    function Del(pattern: string, options: Del.Options, callback: (err: Error, deletedFiles: string[]) => any): void;
+    function Del(pattern: string): Promise<string[]>;
+    function Del(pattern: string, options: Del.Options): Promise<string[]>;
 
-    function Del(patterns: string[]): void;
-    function Del(patterns: string[], options: Del.Options): void;
-    function Del(patterns: string[], callback: (err: Error, deletedFiles: string[]) => any): void;
-    function Del(patterns: string[], options: Del.Options, callback: (err: Error, deletedFiles: string[]) => any): void;
+    function Del(patterns: string[]): Promise<string[]>;
+    function Del(patterns: string[], options: Del.Options): Promise<string[]>;
 
     module Del {
-        function sync(pattern: string, options?: Options): void;
-        function sync(patterns: string[], options?: Options): void;
+        function sync(pattern: string, options?: Options): string[];
+        function sync(patterns: string[], options?: Options): string[];
 
         interface Options extends glob.IOptions {
             force?: boolean