From b910f25cc778fb0ce84983be0af2250265ba108a Mon Sep 17 00:00:00 2001
From: Peter Cai <peter@typeblog.net>
Date: Tue, 7 Apr 2020 21:31:10 +0800
Subject: [PATCH] store: do not panic when kv reads null

instead, return an empty string.
---
 src/store.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/store.rs b/src/store.rs
index ba521ec..5878464 100644
--- a/src/store.rs
+++ b/src/store.rs
@@ -14,8 +14,9 @@ extern "C" {
     fn kv_put_str(key: &str, value: &str) -> Promise;
 }
 
+// Returns empty string ("") if the key is not found
 pub async fn get_str(key: &str) -> MyResult<String> {
-    Ok(JsFuture::from(kv_get(key)).await.internal_err()?.as_string().unwrap())
+    Ok(JsFuture::from(kv_get(key)).await.internal_err()?.as_string().unwrap_or("".into()))
 }
 
 pub async fn get_obj<T: DeserializeOwned>(key: &str) -> MyResult<T> {