From b02028db325dbb8b1b9cbcb151838133acc8267f Mon Sep 17 00:00:00 2001
From: Richard Harris <richard.a.harris@gmail.com>
Date: Sun, 22 Sep 2019 10:34:35 -0400
Subject: [PATCH] fix element_is

---
 src/compiler/compile/render_dom/wrappers/Element/index.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/compiler/compile/render_dom/wrappers/Element/index.ts b/src/compiler/compile/render_dom/wrappers/Element/index.ts
index a8e7ad40a4..d91f9caa22 100644
--- a/src/compiler/compile/render_dom/wrappers/Element/index.ts
+++ b/src/compiler/compile/render_dom/wrappers/Element/index.ts
@@ -372,7 +372,7 @@ export default class ElementWrapper extends Wrapper {
 
 		const is = this.attributes.find(attr => attr.node.name === 'is');
 		if (is) {
-			return x`@element_is("${name}", ${is.render_chunks().join(' + ')});`;
+			return x`@element_is("${name}", ${is.render_chunks().reduce((lhs, rhs) => x`${lhs} + ${rhs}`)});`;
 		}
 
 		return x`@element("${name}")`;