diff --git a/types/chai-spies/chai-spies-tests.ts b/types/chai-spies/chai-spies-tests.ts
index f5247ba13f..7bc9530164 100644
--- a/types/chai-spies/chai-spies-tests.ts
+++ b/types/chai-spies/chai-spies-tests.ts
@@ -24,7 +24,12 @@ let array = [ 1, 2, 3 ];
 chai.spy.on(array, 'push');
 
 // or you can track multiple object's methods
-chai.spy.on(array, 'push', 'pop');
+chai.spy.on(array, ['push', 'pop']);
+
+// or you can track multiple object's methods
+chai.spy.on(array, 'push', function(item) {
+    array.push(item);
+});
 
 array.push(5);
 
@@ -149,4 +154,20 @@ spy.should.not.have.been.called.above(3);
 expect(spy).to.have.been.called.below(3);
 expect(spy).to.not.have.been.called.lt(3);
 spy.should.have.been.called.lt(3);
-spy.should.not.have.been.called.below(3);
\ No newline at end of file
+spy.should.not.have.been.called.below(3);
+
+// You can also create sandbox
+let sb = chai.spy.sandbox();
+
+sb.on(array, 'pop', () => {
+    return 1;
+})
+
+let one = array.pop();
+expect(one).to.equal(1);
+
+// Can restore methods in sandbox
+sb.restore();
+array.push(2);
+let two = array.pop();
+expect(two).to.equal(2);
diff --git a/types/chai-spies/index.d.ts b/types/chai-spies/index.d.ts
index 75f702ca37..bb37fa8cd4 100644
--- a/types/chai-spies/index.d.ts
+++ b/types/chai-spies/index.d.ts
@@ -1,6 +1,8 @@
-// Type definitions for chai-spies
+// Type definitions for chai-spies 1.0.0
 // Project: https://github.com/chaijs/chai-spies
 // Definitions by: Ilya Kuznetsov <https://github.com/kuzn-ilya>
+//                 Harm van der Werf <https://github.com/harm-less>
+//                 Jouni Suorsa <https://github.com/jounisuo>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 /// <reference types="chai" />
@@ -21,7 +23,7 @@ declare namespace Chai {
          * ```ts
          * expect(spy).to.be.spy;
          * spy.should.be.spy;
-         * ``` 
+         * ```
          */
         spy: Assertion;
 
@@ -32,7 +34,7 @@ declare namespace Chai {
          * expect(spy).to.have.been.called();
          * spy.should.have.been.called();
          * ```
-         * Note that ```called``` can be used as a chainable method.  
+         * Note that ```called``` can be used as a chainable method.
          */
         called: ChaiSpies.Called;
 
@@ -61,7 +63,32 @@ declare namespace Chai {
 }
 
 declare namespace ChaiSpies {
+    interface Sandbox {
+      /**
+       * #### chai.spy.on (function)
+       *
+       * Wraps an object method into spy. All calls will pass through to the original function.
+       *
+       * @param {Object} object
+       * @param {String} methodNames names to spy on
+       * @param {function} fn replacement function
+       * @returns function to actually call
+       */
+      on(object: Object, methodNames: string | string[], fn?: (parameters: any[]|any) => any): any;
 
+      /**
+       * #### chai.spy.restore (function)
+       *
+       * Restores previously wrapped object's method.
+       * Restores all spied objects of a sandbox if called without parameters.
+       *
+       * @function
+       * @param {Object} [object]
+       * @param {String|String[]} [methods] name or names
+       * @return {Sandbox} Sandbox instance
+       */
+      restore(object?: Object, methodNames?: string | string[]): void;
+    }
     interface Spy {
         /**
          * #### chai.spy (function)
@@ -72,9 +99,9 @@ declare namespace ChaiSpies {
          * var spy = chai.spy(original)
          *   , e_spy = chai.spy();
          * ```
-         * @param fn function to spy on. @default ```function () {}``` 
+         * @param fn function to spy on. @default ```function () {}```
          * @returns function to actually call
-         */ 
+         */
         (): SpyFunc0Proxy<void>;
         <R>(fn: SpyFunc0<R>): SpyFunc0Proxy<R>;
         <A1, R>(fn: SpyFunc1<A1, R>): SpyFunc1Proxy<A1, R>;
@@ -107,10 +134,11 @@ declare namespace ChaiSpies {
          * var spy = chai.spy.on(Array, 'isArray');
          * ```
          * @param {Object} object
-         * @param {String} method name to spy on
+         * @param {String} method names to spy on
+         * @param {function} fn replacement function
          * @returns function to actually call
-         */ 
-        on(object: Object, ...methodNames: string[]): any;
+         */
+        on(object: Object, methodNames: string | string[], fn?: (parameters: any[]|any) => any): any;
 
         /**
          * #### chai.spy.object (function)
@@ -123,10 +151,24 @@ declare namespace ChaiSpies {
          * @param {String[]|Object} method names or method definitions
          * @returns object with spied methods
          */
-        object(name: string, methods: string[]): any;           
-        object(methods: string[]): any;           
-        object<T>(name: string, methods: T): T;           
-        object<T>(methods: T): T;           
+        object(name: string, methods: string[]): any;
+        object(methods: string[]): any;
+        object<T>(name: string, methods: T): T;
+        object<T>(methods: T): T;
+
+      /**
+       * #### chai.spy.restore (function)
+       *
+       * Restores spy assigned to DEFAULT sandbox
+       *
+       * Restores previously wrapped object's method.
+       * Restores all spied objects of a sandbox if called without parameters.
+       *
+       * @param {Object} [object]
+       * @param {String|String[]} [methods] name or names
+       * @return {Sandbox} Sandbox instance
+       */
+        restore(object?: Object, methodNames?: string | string[]): void;
 
         /**
          * #### chai.spy.returns (function)
@@ -141,6 +183,18 @@ declare namespace ChaiSpies {
          */
 
         returns<T>(value: T): SpyFunc0Proxy<T>;
+
+        /**
+         * ### chai.spy.sandbox
+         *
+         * Creates a sandbox.
+         *
+         * Sandbox is a set of spies.
+         * Sandbox allows to track methods on objects and restore original methods with on restore call.
+         *
+         * @returns {Sandbox}
+         */
+        sandbox(): Sandbox;
     }
 
     interface Called {
@@ -158,12 +212,12 @@ declare namespace ChaiSpies {
          * spy.should.not.have.been.called.once;
          * ```
          */
-        once: Chai.Assertion; 
+        once: Chai.Assertion;
 
         /**
          * ####.twice
          * Assert that a spy has been called exactly twice.
-         * ```ts 
+         * ```ts
          * expect(spy).to.have.been.called.twice;
          * expect(spy).to.not.have.been.called.twice;
          * spy.should.have.been.called.twice;
@@ -215,7 +269,7 @@ declare namespace ChaiSpies {
          * ```ts
          * expect(spy).to.have.been.called.above(3);
          * spy.should.not.have.been.called.above(3);
-         * ``` 
+         * ```
          */
         above(n: number): Chai.Assertion;
 
@@ -225,7 +279,7 @@ declare namespace ChaiSpies {
          * ```ts
          * expect(spy).to.have.been.called.gt(3);
          * spy.should.not.have.been.called.gt(3);
-         * ``` 
+         * ```
          */
         gt(n: number): Chai.Assertion;
 
@@ -235,7 +289,7 @@ declare namespace ChaiSpies {
          * ```ts
          * expect(spy).to.have.been.called.below(3);
          * spy.should.not.have.been.called.below(3);
-         * ```   
+         * ```
          */
         below(n: number): Chai.Assertion;
 
@@ -245,7 +299,7 @@ declare namespace ChaiSpies {
          * ```ts
          * expect(spy).to.have.been.called.lt(3);
          * spy.should.not.have.been.called.lt(3);
-         * ```   
+         * ```
          */
         lt(n: number): Chai.Assertion;
     }
@@ -301,7 +355,7 @@ declare namespace ChaiSpies {
          * spy.should.have.been.called.with('foo');
          * ```
          * Will also pass for ```spy('foo', 'bar')``` and ```spy(); spy('foo')```.
-         * If used with multiple arguments, assert that a spy has been called with all the given arguments at least once.  
+         * If used with multiple arguments, assert that a spy has been called with all the given arguments at least once.
          * ```ts
          * spy('foo', 'bar', 1);
          * expect(spy).to.have.been.called.with('bar', 'foo');
@@ -389,7 +443,7 @@ declare namespace ChaiSpies {
          *
          * Resets __spy object parameters for instantiation and reuse
          * @returns proxy spy object
-         */ 
+         */
         reset(): this;
     }
 
@@ -397,77 +451,77 @@ declare namespace ChaiSpies {
         (): R;
     }
 
-    interface SpyFunc1<A1, R> { 
-        (a: A1): R; 
+    interface SpyFunc1<A1, R> {
+        (a: A1): R;
     }
 
-    interface SpyFunc2<A1, A2, R> { 
-        (a: A1, b: A2): R; 
+    interface SpyFunc2<A1, A2, R> {
+        (a: A1, b: A2): R;
     }
 
-    interface SpyFunc3<A1, A2, A3, R> { 
-        (a: A1, b: A2, c: A3): R; 
+    interface SpyFunc3<A1, A2, A3, R> {
+        (a: A1, b: A2, c: A3): R;
     }
 
-    interface SpyFunc4<A1, A2, A3, A4, R> { 
-        (a: A1, b: A2, c: A3, d: A4): R; 
+    interface SpyFunc4<A1, A2, A3, A4, R> {
+        (a: A1, b: A2, c: A3, d: A4): R;
     }
 
-    interface SpyFunc5<A1, A2, A3, A4, A5, R> { 
-        (a: A1, b: A2, c: A3, d: A4, e: A5): R; 
+    interface SpyFunc5<A1, A2, A3, A4, A5, R> {
+        (a: A1, b: A2, c: A3, d: A4, e: A5): R;
     }
 
-    interface SpyFunc6<A1, A2, A3, A4, A5, A6, R> { 
-        (a: A1, b: A2, c: A3, d: A4, e: A5, f: A6): R; 
+    interface SpyFunc6<A1, A2, A3, A4, A5, A6, R> {
+        (a: A1, b: A2, c: A3, d: A4, e: A5, f: A6): R;
     }
 
-    interface SpyFunc7<A1, A2, A3, A4, A5, A6, A7, R> { 
-        (a: A1, b: A2, c: A3, d: A4, e: A5, f: A6, g: A7): R; 
+    interface SpyFunc7<A1, A2, A3, A4, A5, A6, A7, R> {
+        (a: A1, b: A2, c: A3, d: A4, e: A5, f: A6, g: A7): R;
     }
 
-    interface SpyFunc8<A1, A2, A3, A4, A5, A6, A7, A8, R> { 
-        (a: A1, b: A2, c: A3, d: A4, e: A5, f: A6, g: A7, h: A8): R; 
+    interface SpyFunc8<A1, A2, A3, A4, A5, A6, A7, A8, R> {
+        (a: A1, b: A2, c: A3, d: A4, e: A5, f: A6, g: A7, h: A8): R;
     }
-    
-    interface SpyFunc9<A1, A2, A3, A4, A5, A6, A7, A8, A9, R> { 
-        (a: A1, b: A2, c: A3, d: A4, e: A5, f: A6, g: A7, h: A8, i: A9): R; 
+
+    interface SpyFunc9<A1, A2, A3, A4, A5, A6, A7, A8, A9, R> {
+        (a: A1, b: A2, c: A3, d: A4, e: A5, f: A6, g: A7, h: A8, i: A9): R;
     }
-    
-    interface SpyFunc10<A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, R> { 
-        (a: A1, b: A2, c: A3, d: A4, e: A5, f: A6, g: A7, h: A8, i: A9, j: A10): R; 
+
+    interface SpyFunc10<A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, R> {
+        (a: A1, b: A2, c: A3, d: A4, e: A5, f: A6, g: A7, h: A8, i: A9, j: A10): R;
     }
 
     interface SpyFunc0Proxy<R> extends SpyFunc0<R>, Resetable {
     }
 
-    interface SpyFunc1Proxy<A1, R> extends SpyFunc1<A1, R>, Resetable { 
+    interface SpyFunc1Proxy<A1, R> extends SpyFunc1<A1, R>, Resetable {
     }
 
-    interface SpyFunc2Proxy<A1, A2, R> extends SpyFunc2<A1, A2, R>, Resetable { 
+    interface SpyFunc2Proxy<A1, A2, R> extends SpyFunc2<A1, A2, R>, Resetable {
     }
 
-    interface SpyFunc3Proxy<A1, A2, A3, R> extends SpyFunc3<A1, A2, A3, R>, Resetable { 
+    interface SpyFunc3Proxy<A1, A2, A3, R> extends SpyFunc3<A1, A2, A3, R>, Resetable {
     }
 
-    interface SpyFunc4Proxy<A1, A2, A3, A4, R> extends SpyFunc4<A1, A2, A3, A4, R>, Resetable { 
+    interface SpyFunc4Proxy<A1, A2, A3, A4, R> extends SpyFunc4<A1, A2, A3, A4, R>, Resetable {
     }
 
-    interface SpyFunc5Proxy<A1, A2, A3, A4, A5, R> extends SpyFunc5<A1, A2, A3, A4, A5, R>, Resetable { 
+    interface SpyFunc5Proxy<A1, A2, A3, A4, A5, R> extends SpyFunc5<A1, A2, A3, A4, A5, R>, Resetable {
     }
 
-    interface SpyFunc6Proxy<A1, A2, A3, A4, A5, A6, R> extends SpyFunc6<A1, A2, A3, A4, A5, A6, R>, Resetable { 
+    interface SpyFunc6Proxy<A1, A2, A3, A4, A5, A6, R> extends SpyFunc6<A1, A2, A3, A4, A5, A6, R>, Resetable {
     }
 
-    interface SpyFunc7Proxy<A1, A2, A3, A4, A5, A6, A7, R> extends SpyFunc7<A1, A2, A3, A4, A5, A6, A7, R>, Resetable { 
+    interface SpyFunc7Proxy<A1, A2, A3, A4, A5, A6, A7, R> extends SpyFunc7<A1, A2, A3, A4, A5, A6, A7, R>, Resetable {
     }
 
-    interface SpyFunc8Proxy<A1, A2, A3, A4, A5, A6, A7, A8, R> extends SpyFunc8<A1, A2, A3, A4, A5, A6, A7, A8, R>, Resetable { 
+    interface SpyFunc8Proxy<A1, A2, A3, A4, A5, A6, A7, A8, R> extends SpyFunc8<A1, A2, A3, A4, A5, A6, A7, A8, R>, Resetable {
     }
-    
-    interface SpyFunc9Proxy<A1, A2, A3, A4, A5, A6, A7, A8, A9, R> extends SpyFunc9<A1, A2, A3, A4, A5, A6, A7, A8, A9, R>, Resetable { 
+
+    interface SpyFunc9Proxy<A1, A2, A3, A4, A5, A6, A7, A8, A9, R> extends SpyFunc9<A1, A2, A3, A4, A5, A6, A7, A8, A9, R>, Resetable {
     }
-    
-    interface SpyFunc10Proxy<A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, R> extends SpyFunc10<A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, R>, Resetable { 
+
+    interface SpyFunc10Proxy<A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, R> extends SpyFunc10<A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, R>, Resetable {
     }
 }