*

coding_interviews/frontend/react/useInterval.js

@@ -0,0 +1,23 @@
+import { useEffect, useRef } from 'react';
+
+function useInterval(callback, delay) {
+  const callbackRef = useRef();
+
+  useEffect(() => {
+    callbackRef.current = callback;
+  }, [callback]);
+
+  useEffect(() => {
+    const interval = setInterval(() => {
+      callbackRef.current();
+    }, delay);
+
+    if ([null, undefined].includes(delay)) {
+      clearInterval(interval);
+    }
+
+    return () => {
+      clearInterval(interval);
+    };
+  }, [delay]);
+}