From b2e362a36b5d0fef6181ff2b292837e66aa171e1 Mon Sep 17 00:00:00 2001
From: Audric Ackermann <audric@loki.network>
Date: Wed, 18 Nov 2020 14:40:59 +1100
Subject: [PATCH] add a useInterval hook and move useNetwork hook to the hook
 folder

---
 ts/hooks/useInterval.ts                       | 25 +++++++++++++++++++
 .../session/network => hooks}/useNetwork.ts   |  0
 2 files changed, 25 insertions(+)
 create mode 100644 ts/hooks/useInterval.ts
 rename ts/{components/session/network => hooks}/useNetwork.ts (100%)

diff --git a/ts/hooks/useInterval.ts b/ts/hooks/useInterval.ts
new file mode 100644
index 000000000..793a8a0f3
--- /dev/null
+++ b/ts/hooks/useInterval.ts
@@ -0,0 +1,25 @@
+import React from 'react';
+
+export const useInterval = (callback: any, delay: number | null) => {
+  const savedCallback = React.useRef<any>();
+
+  React.useEffect(() => {
+    savedCallback.current = callback;
+  }, [callback]);
+
+  React.useEffect(() => {
+    function tick() {
+      if (savedCallback && savedCallback.current && savedCallback.current) {
+        savedCallback.current();
+      }
+    }
+    if (delay !== null) {
+      const id = global.setInterval(tick, delay);
+      tick();
+      return () => {
+        global.clearInterval(id);
+      };
+    }
+    return;
+  }, [delay]);
+};
diff --git a/ts/components/session/network/useNetwork.ts b/ts/hooks/useNetwork.ts
similarity index 100%
rename from ts/components/session/network/useNetwork.ts
rename to ts/hooks/useNetwork.ts