Initial commit

hooks/useLocalStorage.ts

@@ -0,0 +1,49 @@
+
+import { useState, useEffect } from 'react';
+
+type SetValue<T> = (value: T | ((val: T) => T)) => void;
+
+export const useLocalStorage = <T,>(key: string, initialValue: T): [T, SetValue<T>] => {
+  const [storedValue, setStoredValue] = useState<T>(() => {
+    if (typeof window === 'undefined') {
+      return initialValue;
+    }
+    try {
+      const item = window.localStorage.getItem(key);
+      return item ? JSON.parse(item) : initialValue;
+    } catch (error) {
+      console.error(error);
+      return initialValue;
+    }
+  });
+
+  const setValue: SetValue<T> = (value) => {
+    try {
+      const valueToStore = value instanceof Function ? value(storedValue) : value;
+      setStoredValue(valueToStore);
+      if (typeof window !== 'undefined') {
+        window.localStorage.setItem(key, JSON.stringify(valueToStore));
+      }
+    } catch (error) {
+      console.error(error);
+    }
+  };
+
+  useEffect(() => {
+    const handleStorageChange = (e: StorageEvent) => {
+      if (e.key === key) {
+        try {
+          setStoredValue(e.newValue ? JSON.parse(e.newValue) : initialValue);
+        } catch (error) {
+            console.error(error)
+        }
+      }
+    };
+    window.addEventListener('storage', handleStorageChange);
+    return () => {
+      window.removeEventListener('storage', handleStorageChange);
+    };
+  }, [initialValue, key]);
+
+  return [storedValue, setValue];
+};