diff --git a/dist/simple-observable-proxy.js b/dist/simple-observable-proxy.js
index c1e0d13..28ebd61 100644
--- a/dist/simple-observable-proxy.js
+++ b/dist/simple-observable-proxy.js
@@ -1,4 +1,4 @@
-/*! simple observable proxy v1.0.0 | MIT License | © 2022 Aleph1 Technologies Inc */
+/*! simple observable proxy v1.1.0 | MIT License | © 2022 Aleph1 Technologies Inc */
 const observables = new Set(),
   observablesByProxy = new Map(),
   observersByProxy = new Map(),
@@ -9,7 +9,9 @@ const observables = new Set(),
       observersByProxy.get(proxy).forEach((callback) => callback());
     }),
       proxiesToNotify.clear(),
-      window.requestAnimationFrame(tick);
+      "undefined" != typeof window && window.requestAnimationFrame
+        ? window.requestAnimationFrame(tick)
+        : setTimeout(tick, 16);
   },
   makeObservableProxy = (data, rootProxy) => {
     if (observables.has(data))
diff --git a/dist/simple-observable-proxy.min.js b/dist/simple-observable-proxy.min.js
index 1b67508..5c7845f 100644
--- a/dist/simple-observable-proxy.min.js
+++ b/dist/simple-observable-proxy.min.js
@@ -1,2 +1,2 @@
-/*! simple observable proxy v1.0.0 | MIT License | © 2022 Aleph1 Technologies Inc */
-const e=new Set,r=new Map,t=new Map,o=new Set,n={}.constructor,a=()=>{o.forEach((e=>{t.get(e).forEach((e=>e()))})),o.clear(),window.requestAnimationFrame(a)},s=(a,c)=>{if(e.has(a))throw new Error("Can’t observe Object or Array again");if(r.has(a))throw new Error("rootProxy isn’t an observable");let i;const y=new Proxy(a,{get:(e,r)=>e[r],set(e,t,n){if(e[t]!==n){if(i){if(r.has(n))throw new Error("Can’t nest observables");o.add(c||y)}e[t]=n}return!0},deleteProperty:(e,r)=>r in e&&(delete e[r],o.add(c||y),!0)});return(Array.isArray(a)?[...Array(a.length).keys()]:Object.keys(a)).forEach((e=>{const t=a[e];if(r.has(t))throw new Error("Can’t nest observables");(e=>Array.isArray(e)||(e=>!!e&&"object"==typeof e&&e.constructor===n)(e))(t)&&(y[e]=s(t,c||y))})),i=new Set,e.add(a),r.set(y,a),t.set(y,i),y},c=e=>(e=>Array.isArray(e)||(e=>!!e&&"object"==typeof e&&e.constructor===n)(e))(e)&&s(e),i=(e,r)=>{const o=t.get(e);return!(!o||"function"!=typeof r)&&o.add(r)},y=(e,r)=>{const o=t.get(e);return!(!o||"function"!=typeof r)&&o.delete(r)},d=n=>{const a=t.get(n);return!!a&&(a.clear(),e.delete(r.get(n)),r.delete(n),t.delete(n),o.delete(n),!0)};a();export{d as destroy,c as observable,i as observe,y as unobserve};
+/*! simple observable proxy v1.1.0 | MIT License | © 2022 Aleph1 Technologies Inc */
+const e=new Set,r=new Map,t=new Map,o=new Set,n={}.constructor,a=()=>{o.forEach((e=>{t.get(e).forEach((e=>e()))})),o.clear(),"undefined"!=typeof window&&window.requestAnimationFrame?window.requestAnimationFrame(a):setTimeout(a,16)},s=(a,c)=>{if(e.has(a))throw new Error("Can’t observe Object or Array again");if(r.has(a))throw new Error("rootProxy isn’t an observable");let i;const d=new Proxy(a,{get:(e,r)=>e[r],set(e,t,n){if(e[t]!==n){if(i){if(r.has(n))throw new Error("Can’t nest observables");o.add(c||d)}e[t]=n}return!0},deleteProperty:(e,r)=>r in e&&(delete e[r],o.add(c||d),!0)});return(Array.isArray(a)?[...Array(a.length).keys()]:Object.keys(a)).forEach((e=>{const t=a[e];if(r.has(t))throw new Error("Can’t nest observables");(e=>Array.isArray(e)||(e=>!!e&&"object"==typeof e&&e.constructor===n)(e))(t)&&(d[e]=s(t,c||d))})),i=new Set,e.add(a),r.set(d,a),t.set(d,i),d},c=e=>(e=>Array.isArray(e)||(e=>!!e&&"object"==typeof e&&e.constructor===n)(e))(e)&&s(e),i=(e,r)=>{const o=t.get(e);return!(!o||"function"!=typeof r)&&o.add(r)},d=(e,r)=>{const o=t.get(e);return!(!o||"function"!=typeof r)&&o.delete(r)},w=n=>{const a=t.get(n);return!!a&&(a.clear(),e.delete(r.get(n)),r.delete(n),t.delete(n),o.delete(n),!0)};a();export{w as destroy,c as observable,i as observe,d as unobserve};
diff --git a/lib/index.js b/lib/index.js
index 6a1a16b..1f9cc37 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -1,3 +1,6 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.destroy = exports.unobserve = exports.observe = exports.observable = void 0;
 // data that is being observed
 const observables = new Set();
 // original data for each proxy
@@ -14,7 +17,10 @@ const tick = () => {
         observersByProxy.get(proxy).forEach((callback) => callback());
     });
     proxiesToNotify.clear();
-    window.requestAnimationFrame(tick);
+    if (typeof window !== "undefined" && window.requestAnimationFrame)
+        window.requestAnimationFrame(tick);
+    else
+        setTimeout(tick, 16);
 };
 const makeObservableProxy = (data, rootProxy) => {
     if (observables.has(data))
@@ -59,18 +65,21 @@ const makeObservableProxy = (data, rootProxy) => {
     observersByProxy.set(proxy, observers);
     return proxy;
 };
-export const observable = (data) => {
+const observable = (data) => {
     return /*#__INLINE__*/ canBeObservable(data) && makeObservableProxy(data);
 };
-export const observe = (observableProxy, callback) => {
+exports.observable = observable;
+const observe = (observableProxy, callback) => {
     const observers = observersByProxy.get(observableProxy);
     return observers && typeof callback === 'function' ? observers.add(callback) : false;
 };
-export const unobserve = (observableProxy, callback) => {
+exports.observe = observe;
+const unobserve = (observableProxy, callback) => {
     const observers = observersByProxy.get(observableProxy);
     return observers && typeof callback === 'function' ? observers.delete(callback) : false;
 };
-export const destroy = (observableProxy) => {
+exports.unobserve = unobserve;
+const destroy = (observableProxy) => {
     const observers = observersByProxy.get(observableProxy);
     if (observers) {
         observers.clear();
@@ -82,4 +91,5 @@ export const destroy = (observableProxy) => {
     }
     return false;
 };
+exports.destroy = destroy;
 tick();
diff --git a/lib/index.mjs b/lib/index.mjs
new file mode 100644
index 0000000..69bf000
--- /dev/null
+++ b/lib/index.mjs
@@ -0,0 +1,88 @@
+// data that is being observed
+const observables = new Set();
+// original data for each proxy
+const observablesByProxy = new Map();
+// observers for each proxy
+const observersByProxy = new Map();
+// observers to call on tick
+const proxiesToNotify = new Set();
+const objectConstructor = {}.constructor;
+const isPlainObject = (data) => !!data && typeof data === 'object' && data.constructor === objectConstructor;
+const canBeObservable = (data) => Array.isArray(data) || /*#__INLINE__*/ isPlainObject(data);
+const tick = () => {
+    proxiesToNotify.forEach(proxy => {
+        observersByProxy.get(proxy).forEach((callback) => callback());
+    });
+    proxiesToNotify.clear();
+    if (typeof window !== "undefined" && window.requestAnimationFrame)
+        window.requestAnimationFrame(tick);
+    else
+        setTimeout(tick, 16);
+};
+const makeObservableProxy = (data, rootProxy) => {
+    if (observables.has(data))
+        throw new Error('Can’t observe Object or Array again');
+    if (observablesByProxy.has(data))
+        throw new Error('rootProxy isn’t an observable');
+    let observers;
+    const proxy = new Proxy(data, {
+        get(target, key) {
+            return target[key];
+        },
+        set(target, key, value) {
+            if (target[key] !== value) {
+                if (observers) {
+                    if (observablesByProxy.has(value))
+                        throw new Error('Can’t nest observables');
+                    proxiesToNotify.add(rootProxy || proxy);
+                }
+                target[key] = value;
+            }
+            return true;
+        },
+        deleteProperty(target, key) {
+            if (key in target) {
+                delete target[key];
+                proxiesToNotify.add(rootProxy || proxy);
+                return true;
+            }
+            return false;
+        }
+    });
+    (Array.isArray(data) ? [...Array(data.length).keys()] : Object.keys(data)).forEach(key => {
+        const value = data[key];
+        if (observablesByProxy.has(value))
+            throw new Error('Can’t nest observables');
+        if ( /*#__INLINE__*/canBeObservable(value))
+            proxy[key] = makeObservableProxy(value, rootProxy || proxy);
+    });
+    observers = new Set();
+    observables.add(data);
+    observablesByProxy.set(proxy, data);
+    observersByProxy.set(proxy, observers);
+    return proxy;
+};
+export const observable = (data) => {
+    return /*#__INLINE__*/ canBeObservable(data) && makeObservableProxy(data);
+};
+export const observe = (observableProxy, callback) => {
+    const observers = observersByProxy.get(observableProxy);
+    return observers && typeof callback === 'function' ? observers.add(callback) : false;
+};
+export const unobserve = (observableProxy, callback) => {
+    const observers = observersByProxy.get(observableProxy);
+    return observers && typeof callback === 'function' ? observers.delete(callback) : false;
+};
+export const destroy = (observableProxy) => {
+    const observers = observersByProxy.get(observableProxy);
+    if (observers) {
+        observers.clear();
+        observables.delete(observablesByProxy.get(observableProxy));
+        observablesByProxy.delete(observableProxy);
+        observersByProxy.delete(observableProxy);
+        proxiesToNotify.delete(observableProxy);
+        return true;
+    }
+    return false;
+};
+tick();
diff --git a/package.json b/package.json
index e1205df..a5be65b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "simple-observable-proxy",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "description": "Simple observable ES6 proxy.",
   "browser": "dist/simple-observable-proxy.js",
   "main": "lib/index.js",