From a5d20bfe7c24bdef728a200c080be2c651ae0036 Mon Sep 17 00:00:00 2001
From: pushkine <pushkine.github@gmail.com>
Date: Wed, 15 Apr 2020 15:51:18 +0200
Subject: [PATCH] remove init variable

---
 src/runtime/store/index.ts | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/src/runtime/store/index.ts b/src/runtime/store/index.ts
index cafb4e9d6b..80c7a5e8e0 100644
--- a/src/runtime/store/index.ts
+++ b/src/runtime/store/index.ts
@@ -150,18 +150,15 @@ const single = <T>(store: SingleStore, controller: DeriverController): StartStop
 /** derived store StartStopNotifier function when given an array of stores */
 const multiple = <T>(stores: ArrayStore, controller: DeriverController): StartStopNotifier<T> => set => {
 	const values = new Array(stores.length);
+	let pending = 1 << stores.length;
 
-	let inited = false;
-	let pending = 0;
-
-	const sync = () => inited && !pending && controller.update(values, set);
 	const unsubs = stores.map((store, index) =>
 		subscribe(
 			store,
 			value => {
 				values[index] = value;
 				pending &= ~(1 << index);
-				sync();
+				if (!pending) controller.update(values, set);
 			},
 			() => {
 				pending |= 1 << index;
@@ -169,7 +166,9 @@ const multiple = <T>(stores: ArrayStore, controller: DeriverController): StartSt
 		)
 	);
 
-	(inited = true), sync();
+	pending &= ~(1 << stores.length);
+	controller.update(values, set);
+
 	return function stop() {
 		unsubs.forEach(v => v()), controller.cleanup();
 	};