fix undefined nodeName in complex async apps (#504)

preactjs · Feb 19, 2018 · c5bd3d8 · c5bd3d8
1 parent 8d50dfc
commit c5bd3d8
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/components/async.js b/src/components/async.js
@@ -14,7 +14,7 @@ export default function(req) {
 
 		this.shouldComponentUpdate = (_, nxt) => {
 			nxt = nxt.child === void 0;
-			if (nxt && old === void 0) {
+			if (nxt && old === void 0 && !!b) {
 				old = h(b.nodeName, { dangerouslySetInnerHTML: { __html: b.innerHTML } });
 			} else {
 				old = ''; // dump it