From b82ca07c458f1840c1ea27b8715874f554279e98 Mon Sep 17 00:00:00 2001
From: Rich Harris <richard.a.harris@gmail.com>
Date: Wed, 5 Dec 2018 09:10:47 -0500
Subject: [PATCH] fix prop concatenation

---
 src/compile/Component.ts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/compile/Component.ts b/src/compile/Component.ts
index 1529bb2230..61c7ec2721 100644
--- a/src/compile/Component.ts
+++ b/src/compile/Component.ts
@@ -570,7 +570,7 @@ export default class Component {
 		let current_group;
 
 		walk(this.instance_script.content, {
-			enter(node) {
+			enter(node, parent) {
 				if (/Function/.test(node.type)) {
 					current_group = null;
 					return this.skip();
@@ -617,7 +617,9 @@ export default class Component {
 						}
 					}
 				} else {
-					current_group = null;
+					if (node.type !== 'ExportNamedDeclaration') {
+						if (!parent) current_group = null;
+					}
 				}
 			},