From cd83265fa87a20405e224869255a89b75823679d Mon Sep 17 00:00:00 2001
From: Richard Harris <richard.a.harris@gmail.com>
Date: Sat, 21 Sep 2019 09:18:22 -0400
Subject: [PATCH] dont overwrite const props

---
 src/compiler/compile/Component.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/compiler/compile/Component.ts b/src/compiler/compile/Component.ts
index 902a0d9756..c4d18ec4ce 100644
--- a/src/compiler/compile/Component.ts
+++ b/src/compiler/compile/Component.ts
@@ -881,7 +881,7 @@ export default class Component {
 							const { name } = declarator.id;
 							const variable = component.var_lookup.get(name);
 
-							if (variable.export_name) {
+							if (variable.export_name && variable.writable) {
 								const insert = variable.subscribable
 									? get_insert(variable)
 									: null;