diff --git a/querystring/build.js b/querystring/build.js
index 3bea081f..55474392 100644
--- a/querystring/build.js
+++ b/querystring/build.js
@@ -10,7 +10,7 @@ module.exports = function(object) {
 	return args.join("&")
 
 	function destructure(key, value) {
-		if (value instanceof Array) {
+		if (Array.isArray(value)) {
 			for (var i = 0; i < value.length; i++) {
 				destructure(key + "[" + i + "]", value[i])
 			}
diff --git a/render/hyperscript.js b/render/hyperscript.js
index 28ce0d35..a2cf7332 100644
--- a/render/hyperscript.js
+++ b/render/hyperscript.js
@@ -41,20 +41,20 @@ function hyperscript(selector) {
 					break
 				}
 			}
-			if (children instanceof Array && children.length == 1 && children[0] != null && children[0].tag === "#") text = children[0].children
+			if (Array.isArray(children) && children.length == 1 && children[0] != null && children[0].tag === "#") text = children[0].children
 			else childList = children
 
 			return Vnode(tag || "div", attrs.key, hasAttrs ? attrs : undefined, childList, text, undefined)
 		}
 	}
 	var attrs, children, childrenIndex
-	if (arguments[1] == null || typeof arguments[1] === "object" && arguments[1].tag === undefined && !(arguments[1] instanceof Array)) {
+	if (arguments[1] == null || typeof arguments[1] === "object" && arguments[1].tag === undefined && !Array.isArray(arguments[1])) {
 		attrs = arguments[1]
 		childrenIndex = 2
 	}
 	else childrenIndex = 1
 	if (arguments.length === childrenIndex + 1) {
-		children = arguments[childrenIndex] instanceof Array ? arguments[childrenIndex] : [arguments[childrenIndex]]
+		children = Array.isArray(arguments[childrenIndex]) ? arguments[childrenIndex] : [arguments[childrenIndex]]
 	}
 	else {
 		children = []
diff --git a/render/render.js b/render/render.js
index 516b0c7f..47c65aae 100644
--- a/render/render.js
+++ b/render/render.js
@@ -417,7 +417,7 @@ module.exports = function($window) {
 		if (vnode.instance != null) onremove(vnode.instance)
 		else {
 			var children = vnode.children
-			if (children instanceof Array) {
+			if (Array.isArray(children)) {
 				for (var i = 0; i < children.length; i++) {
 					var child = children[i]
 					if (child != null) onremove(child)
@@ -566,7 +566,7 @@ module.exports = function($window) {
 		// First time rendering into a node clears it out
 		if (dom.vnodes == null) dom.textContent = ""
 
-		if (!(vnodes instanceof Array)) vnodes = [vnodes]
+		if (!Array.isArray(vnodes)) vnodes = [vnodes]
 		updateNodes(dom, dom.vnodes, Vnode.normalizeChildren(vnodes), hooks, null, undefined)
 		dom.vnodes = vnodes
 		for (var i = 0; i < hooks.length; i++) hooks[i]()
diff --git a/render/tests/test-fragment.js b/render/tests/test-fragment.js
index f0403bbc..b10fc850 100644
--- a/render/tests/test-fragment.js
+++ b/render/tests/test-fragment.js
@@ -11,7 +11,7 @@ o.spec("fragment", function() {
 
 		o(frag.tag).equals("[")
 
-		o(frag.children instanceof Array).equals(true)
+		o(Array.isArray(frag.children)).equals(true)
 		o(frag.children.length).equals(1)
 		o(frag.children[0]).equals(child)
 
@@ -24,7 +24,7 @@ o.spec("fragment", function() {
 		var frag = fragment(attrs, [])
 		o(frag.tag).equals("[")
 
-		o(frag.children instanceof Array).equals(true)
+		o(Array.isArray(frag.children)).equals(true)
 		o(frag.children.length).equals(0)
 
 		o(frag.attrs).equals(attrs)
diff --git a/render/tests/test-onbeforeremove.js b/render/tests/test-onbeforeremove.js
index 82a859d0..c9af4894 100644
--- a/render/tests/test-onbeforeremove.js
+++ b/render/tests/test-onbeforeremove.js
@@ -158,14 +158,14 @@ o.spec("onbeforeremove", function() {
 
 		render(root, vnodes)
 		render(root, updated)
-		
+
 		o(root.childNodes.length).equals(2)
 		o(root.firstChild.firstChild.nodeValue).equals("1")
-		
+
 		callAsync(function() {
 			o(root.childNodes.length).equals(1)
 			o(root.firstChild.firstChild.nodeValue).equals("2")
-			
+
 			done()
 		})
 	})
@@ -184,4 +184,25 @@ o.spec("onbeforeremove", function() {
 			done()
 		})
 	})
+	o("awaits promise resolution before removing the node", function(done) {
+		var view = o.spy()
+		var onremove = o.spy()
+		var onbeforeremove = function(){return new Promise(function(resolve){callAsync(resolve)})}
+		var component = {
+			onbeforeremove: onbeforeremove,
+			onremove: onremove,
+			view: view,
+		}
+		render(root, [{tag: component}])
+		render(root, [])
+
+		callAsync(function(){
+			o(onremove.callCount).equals(0)
+
+			callAsync(function() {
+				o(onremove.callCount).equals(1)
+				done()
+			})
+		})
+	})
 })
diff --git a/render/vnode.js b/render/vnode.js
index 0c52d53d..99877e4e 100644
--- a/render/vnode.js
+++ b/render/vnode.js
@@ -2,7 +2,7 @@ function Vnode(tag, key, attrs, children, text, dom) {
 	return {tag: tag, key: key, attrs: attrs, children: children, text: text, dom: dom, domSize: undefined, state: {}, events: undefined, instance: undefined, skip: false}
 }
 Vnode.normalize = function(node) {
-	if (node instanceof Array) return Vnode("[", undefined, undefined, Vnode.normalizeChildren(node), undefined, undefined)
+	if (Array.isArray(node)) return Vnode("[", undefined, undefined, Vnode.normalizeChildren(node), undefined, undefined)
 	if (node != null && typeof node !== "object") return Vnode("#", undefined, undefined, node, undefined, undefined)
 	return node
 }
diff --git a/request/request.js b/request/request.js
index 11e2e956..123ae1e7 100644
--- a/request/request.js
+++ b/request/request.js
@@ -152,7 +152,7 @@ module.exports = function($window, Promise) {
 
 	function cast(type, data) {
 		if (typeof type === "function") {
-			if (data instanceof Array) {
+			if (Array.isArray(data)) {
 				for (var i = 0; i < data.length; i++) {
 					data[i] = new type(data[i])
 				}