diff --git a/dist/immediate.js b/dist/immediate.js
index c5d5666..996997c 100644
--- a/dist/immediate.js
+++ b/dist/immediate.js
@@ -1,4 +1,5 @@
 (function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.immediate = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(_dereq_,module,exports){
+(function (global){
 'use strict';
 var types = [
   _dereq_('./nextTick'),
@@ -13,6 +14,19 @@ var currentQueue;
 var queueIndex = -1;
 var queue = [];
 var scheduled = false;
+
+var globalObject;
+if(typeof window!=="undefined") {
+  globalObject=window;
+} else if(typeof global!=="undefined") {
+  globalObject=global;
+} else if(typeof self!=="undefined") {
+  globalObject=self;
+} else {
+  globalObject=this;
+}
+
+
 function cleanUpNextTick() {
   if (!draining || !currentQueue) {
     return;
@@ -55,8 +69,8 @@ var scheduleDrain;
 var i = -1;
 var len = types.length;
 while (++i < len) {
-  if (types[i] && types[i].test && types[i].test()) {
-    scheduleDrain = types[i].install(nextTick);
+  if (types[i] && types[i].test && types[i].test(globalObject)) {
+    scheduleDrain = types[i].install(nextTick, globalObject);
     break;
   }
 }
@@ -97,44 +111,46 @@ function immediate(task) {
   }
 }
 
+}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
 },{"./messageChannel":2,"./mutation.js":3,"./nextTick":7,"./queueMicrotask":4,"./stateChange":5,"./timeout":6}],2:[function(_dereq_,module,exports){
-(function (global){
 'use strict';
 
-exports.test = function () {
-  if (global.setImmediate) {
+exports.test = function (globalObject) {
+  if (globalObject.setImmediate) {
     // we can only get here in IE10
     // which doesn't handel postMessage well
     return false;
   }
-  return typeof global.MessageChannel !== 'undefined';
+  return typeof globalObject.MessageChannel !== 'undefined';
 };
 
-exports.install = function (func) {
-  var channel = new global.MessageChannel();
+exports.install = function (func, globalObject) {
+  var channel = new globalObject.MessageChannel();
   channel.port1.onmessage = func;
   return function () {
     channel.port2.postMessage(0);
   };
 };
-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
 },{}],3:[function(_dereq_,module,exports){
-(function (global){
 'use strict';
 //based off rsvp https://github.com/tildeio/rsvp.js
 //license https://github.com/tildeio/rsvp.js/blob/master/LICENSE
 //https://github.com/tildeio/rsvp.js/blob/master/lib/rsvp/asap.js
 
-var Mutation = global.MutationObserver || global.WebKitMutationObserver;
+function getMutation(globalObject) {
+  return globalObject.MutationObserver || globalObject.WebKitMutationObserver;
+}
 
-exports.test = function () {
-  return Mutation;
+
+exports.test = function (globalObject) {
+  return getMutation(globalObject);
 };
 
-exports.install = function (handle) {
+exports.install = function (handle, globalObject) {
+  var Mutation = getMutation(globalObject);
   var called = 0;
   var observer = new Mutation(handle);
-  var element = global.document.createTextNode('');
+  var element = globalObject.document.createTextNode('');
   observer.observe(element, {
     characterData: true
   });
@@ -142,35 +158,31 @@ exports.install = function (handle) {
     element.data = (called = ++called % 2);
   };
 };
-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
 },{}],4:[function(_dereq_,module,exports){
-(function (global){
 'use strict';
-exports.test = function () {
-  return typeof global.queueMicrotask === 'function';
+exports.test = function (globalObject) {
+  return typeof globalObject.queueMicrotask === 'function';
 };
 
-exports.install = function (func) {
+exports.install = function (func, globalObject) {
   return function () {
-    global.queueMicrotask(func);
+    globalObject.queueMicrotask(func);
   };
 };
 
-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
 },{}],5:[function(_dereq_,module,exports){
-(function (global){
 'use strict';
 
-exports.test = function () {
-  return 'document' in global && 'onreadystatechange' in global.document.createElement('script');
+exports.test = function (globalObject) {
+  return 'document' in globalObject && 'onreadystatechange' in globalObject.document.createElement('script');
 };
 
-exports.install = function (handle) {
+exports.install = function (handle, globalObject) {
   return function () {
 
     // Create a <script> element; its readystatechange event will be fired asynchronously once it is inserted
     // into the document. Do so, thus queuing up the task. Remember to clean up once it's been called.
-    var scriptEl = global.document.createElement('script');
+    var scriptEl = globalObject.document.createElement('script');
     scriptEl.onreadystatechange = function () {
       handle();
 
@@ -178,12 +190,11 @@ exports.install = function (handle) {
       scriptEl.parentNode.removeChild(scriptEl);
       scriptEl = null;
     };
-    global.document.documentElement.appendChild(scriptEl);
+    globalObject.document.documentElement.appendChild(scriptEl);
 
     return handle;
   };
 };
-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
 },{}],6:[function(_dereq_,module,exports){
 'use strict';
 exports.test = function () {
diff --git a/dist/immediate.min.js b/dist/immediate.min.js
index 9d07554..7f8f960 100644
--- a/dist/immediate.min.js
+++ b/dist/immediate.min.js
@@ -1 +1 @@
-!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var n;n="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this,n.immediate=e()}}(function(){return function(){function e(n,t,o){function i(r,f){if(!t[r]){if(!n[r]){var a="function"==typeof require&&require;if(!f&&a)return a(r,!0);if(u)return u(r,!0);var s=new Error("Cannot find module '"+r+"'");throw s.code="MODULE_NOT_FOUND",s}var l=t[r]={exports:{}};n[r][0].call(l.exports,function(e){return i(n[r][1][e]||e)},l,l.exports,e,n,t,o)}return t[r].exports}for(var u="function"==typeof require&&require,r=0;r<o.length;r++)i(o[r]);return i}return e}()({1:[function(e,n,t){"use strict";function o(){f&&a&&(f=!1,a.length?d=a.concat(d):c=-1,d.length&&i())}function i(){if(!f){p=!1,f=!0;for(var e=d.length,n=setTimeout(o);e;){for(a=d,d=[];a&&++c<e;)a[c].run();c=-1,e=d.length}a=null,c=-1,f=!1,clearTimeout(n)}}function u(e,n){this.fun=e,this.array=n}function r(e){var n=new Array(arguments.length-1);if(arguments.length>1)for(var t=1;t<arguments.length;t++)n[t-1]=arguments[t];d.push(new u(e,n)),p||f||(p=!0,s())}for(var f,a,s,l=[e("./nextTick"),e("./queueMicrotask"),e("./mutation.js"),e("./messageChannel"),e("./stateChange"),e("./timeout")],c=-1,d=[],p=!1,h=-1,g=l.length;++h<g;)if(l[h]&&l[h].test&&l[h].test()){s=l[h].install(i);break}u.prototype.run=function(){var e=this.fun,n=this.array;switch(n.length){case 0:return e();case 1:return e(n[0]);case 2:return e(n[0],n[1]);case 3:return e(n[0],n[1],n[2]);default:return e.apply(null,n)}},n.exports=r},{"./messageChannel":2,"./mutation.js":3,"./nextTick":7,"./queueMicrotask":4,"./stateChange":5,"./timeout":6}],2:[function(e,n,t){(function(e){"use strict";t.test=function(){return!e.setImmediate&&void 0!==e.MessageChannel},t.install=function(n){var t=new e.MessageChannel;return t.port1.onmessage=n,function(){t.port2.postMessage(0)}}}).call(this,"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{}],3:[function(e,n,t){(function(e){"use strict";var n=e.MutationObserver||e.WebKitMutationObserver;t.test=function(){return n},t.install=function(t){var o=0,i=new n(t),u=e.document.createTextNode("");return i.observe(u,{characterData:!0}),function(){u.data=o=++o%2}}}).call(this,"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{}],4:[function(e,n,t){(function(e){"use strict";t.test=function(){return"function"==typeof e.queueMicrotask},t.install=function(n){return function(){e.queueMicrotask(n)}}}).call(this,"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{}],5:[function(e,n,t){(function(e){"use strict";t.test=function(){return"document"in e&&"onreadystatechange"in e.document.createElement("script")},t.install=function(n){return function(){var t=e.document.createElement("script");return t.onreadystatechange=function(){n(),t.onreadystatechange=null,t.parentNode.removeChild(t),t=null},e.document.documentElement.appendChild(t),n}}}).call(this,"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{}],6:[function(e,n,t){"use strict";t.test=function(){return!0},t.install=function(e){return function(){setTimeout(e,0)}}},{}],7:[function(e,n,t){},{}]},{},[1])(1)});
+!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var t;t="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this,t.immediate=e()}}(function(){return function(){function e(t,n,r){function i(u,f){if(!n[u]){if(!t[u]){var a="function"==typeof require&&require;if(!f&&a)return a(u,!0);if(o)return o(u,!0);var s=new Error("Cannot find module '"+u+"'");throw s.code="MODULE_NOT_FOUND",s}var c=n[u]={exports:{}};t[u][0].call(c.exports,function(e){return i(t[u][1][e]||e)},c,c.exports,e,t,n,r)}return n[u].exports}for(var o="function"==typeof require&&require,u=0;u<r.length;u++)i(r[u]);return i}return e}()({1:[function(e,t,n){(function(n){"use strict";function r(){f&&a&&(f=!1,a.length?d=a.concat(d):l=-1,d.length&&i())}function i(){if(!f){p=!1,f=!0;for(var e=d.length,t=setTimeout(r);e;){for(a=d,d=[];a&&++l<e;)a[l].run();l=-1,e=d.length}a=null,l=-1,f=!1,clearTimeout(t)}}function o(e,t){this.fun=e,this.array=t}function u(e){var t=new Array(arguments.length-1);if(arguments.length>1)for(var n=1;n<arguments.length;n++)t[n-1]=arguments[n];d.push(new o(e,t)),p||f||(p=!0,h())}var f,a,s,c=[e("./nextTick"),e("./queueMicrotask"),e("./mutation.js"),e("./messageChannel"),e("./stateChange"),e("./timeout")],l=-1,d=[],p=!1;s="undefined"!=typeof window?window:void 0!==n?n:"undefined"!=typeof self?self:this;for(var h,m=-1,g=c.length;++m<g;)if(c[m]&&c[m].test&&c[m].test(s)){h=c[m].install(i,s);break}o.prototype.run=function(){var e=this.fun,t=this.array;switch(t.length){case 0:return e();case 1:return e(t[0]);case 2:return e(t[0],t[1]);case 3:return e(t[0],t[1],t[2]);default:return e.apply(null,t)}},t.exports=u}).call(this,"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{"./messageChannel":2,"./mutation.js":3,"./nextTick":7,"./queueMicrotask":4,"./stateChange":5,"./timeout":6}],2:[function(e,t,n){"use strict";n.test=function(e){return!e.setImmediate&&void 0!==e.MessageChannel},n.install=function(e,t){var n=new t.MessageChannel;return n.port1.onmessage=e,function(){n.port2.postMessage(0)}}},{}],3:[function(e,t,n){"use strict";function r(e){return e.MutationObserver||e.WebKitMutationObserver}n.test=function(e){return r(e)},n.install=function(e,t){var n=r(t),i=0,o=new n(e),u=t.document.createTextNode("");return o.observe(u,{characterData:!0}),function(){u.data=i=++i%2}}},{}],4:[function(e,t,n){"use strict";n.test=function(e){return"function"==typeof e.queueMicrotask},n.install=function(e,t){return function(){t.queueMicrotask(e)}}},{}],5:[function(e,t,n){"use strict";n.test=function(e){return"document"in e&&"onreadystatechange"in e.document.createElement("script")},n.install=function(e,t){return function(){var n=t.document.createElement("script");return n.onreadystatechange=function(){e(),n.onreadystatechange=null,n.parentNode.removeChild(n),n=null},t.document.documentElement.appendChild(n),e}}},{}],6:[function(e,t,n){"use strict";n.test=function(){return!0},n.install=function(e){return function(){setTimeout(e,0)}}},{}],7:[function(e,t,n){},{}]},{},[1])(1)});
diff --git a/lib/index.js b/lib/index.js
index 9abe977..ca2f6f3 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -12,6 +12,19 @@ var currentQueue;
 var queueIndex = -1;
 var queue = [];
 var scheduled = false;
+
+var globalObject;
+if(typeof window !== "undefined") {
+  globalObject = window;
+} else if(typeof global !== "undefined") {
+  globalObject = global;
+} else if(typeof self !== "undefined") {
+  globalObject = self;
+} else {
+  globalObject = this;
+}
+
+
 function cleanUpNextTick() {
   if (!draining || !currentQueue) {
     return;
@@ -54,8 +67,8 @@ var scheduleDrain;
 var i = -1;
 var len = types.length;
 while (++i < len) {
-  if (types[i] && types[i].test && types[i].test()) {
-    scheduleDrain = types[i].install(nextTick);
+  if (types[i] && types[i].test && types[i].test(globalObject)) {
+    scheduleDrain = types[i].install(nextTick, globalObject);
     break;
   }
 }
diff --git a/lib/messageChannel.js b/lib/messageChannel.js
index a6ce360..e8e51cf 100644
--- a/lib/messageChannel.js
+++ b/lib/messageChannel.js
@@ -1,16 +1,16 @@
 'use strict';
 
-exports.test = function () {
-  if (global.setImmediate) {
+exports.test = function (globalObject) {
+  if (globalObject.setImmediate) {
     // we can only get here in IE10
     // which doesn't handel postMessage well
     return false;
   }
-  return typeof global.MessageChannel !== 'undefined';
+  return typeof globalObject.MessageChannel !== 'undefined';
 };
 
-exports.install = function (func) {
-  var channel = new global.MessageChannel();
+exports.install = function (func, globalObject) {
+  var channel = new globalObject.MessageChannel();
   channel.port1.onmessage = func;
   return function () {
     channel.port2.postMessage(0);
diff --git a/lib/mutation.js b/lib/mutation.js
index f159741..bb3c64d 100644
--- a/lib/mutation.js
+++ b/lib/mutation.js
@@ -3,16 +3,20 @@
 //license https://github.com/tildeio/rsvp.js/blob/master/LICENSE
 //https://github.com/tildeio/rsvp.js/blob/master/lib/rsvp/asap.js
 
-var Mutation = global.MutationObserver || global.WebKitMutationObserver;
+function getMutation(globalObject) {
+  return globalObject.MutationObserver || globalObject.WebKitMutationObserver;
+}
 
-exports.test = function () {
-  return Mutation;
+
+exports.test = function (globalObject) {
+  return getMutation(globalObject);
 };
 
-exports.install = function (handle) {
+exports.install = function (handle, globalObject) {
+  var Mutation = getMutation(globalObject);
   var called = 0;
   var observer = new Mutation(handle);
-  var element = global.document.createTextNode('');
+  var element = globalObject.document.createTextNode('');
   observer.observe(element, {
     characterData: true
   });
diff --git a/lib/queueMicrotask.js b/lib/queueMicrotask.js
index 43f63ac..c932301 100644
--- a/lib/queueMicrotask.js
+++ b/lib/queueMicrotask.js
@@ -1,10 +1,10 @@
 'use strict';
-exports.test = function () {
-  return typeof global.queueMicrotask === 'function';
+exports.test = function (globalObject) {
+  return typeof globalObject.queueMicrotask === 'function';
 };
 
-exports.install = function (func) {
+exports.install = function (func, globalObject) {
   return function () {
-    global.queueMicrotask(func);
+    globalObject.queueMicrotask(func);
   };
 };
diff --git a/lib/stateChange.js b/lib/stateChange.js
index 5b2316d..3a1fa55 100644
--- a/lib/stateChange.js
+++ b/lib/stateChange.js
@@ -1,15 +1,15 @@
 'use strict';
 
-exports.test = function () {
-  return 'document' in global && 'onreadystatechange' in global.document.createElement('script');
+exports.test = function (globalObject) {
+  return 'document' in globalObject && 'onreadystatechange' in globalObject.document.createElement('script');
 };
 
-exports.install = function (handle) {
+exports.install = function (handle, globalObject) {
   return function () {
 
     // Create a <script> element; its readystatechange event will be fired asynchronously once it is inserted
     // into the document. Do so, thus queuing up the task. Remember to clean up once it's been called.
-    var scriptEl = global.document.createElement('script');
+    var scriptEl = globalObject.document.createElement('script');
     scriptEl.onreadystatechange = function () {
       handle();
 
@@ -17,7 +17,7 @@ exports.install = function (handle) {
       scriptEl.parentNode.removeChild(scriptEl);
       scriptEl = null;
     };
-    global.document.documentElement.appendChild(scriptEl);
+    globalObject.document.documentElement.appendChild(scriptEl);
 
     return handle;
   };