Move files to lib folder

context/UseStorageState.tsx

@@ -1,67 +0,0 @@
-import * as SecureStore from 'expo-secure-store';
-import * as React from 'react';
-import { Platform } from 'react-native';
-
-type UseStateHook<T> = [[boolean, T | null], (value: T | null) => void];
-
-function useAsyncState<T>(
-  initialValue: [boolean, T | null] = [true, null],
-): UseStateHook<T> {
-  return React.useReducer(
-    (state: [boolean, T | null], action: T | null = null): [boolean, T | null] => [false, action],
-    initialValue
-  ) as UseStateHook<T>;
-}
-
-export async function setStorageItemAsync(key: string, value: string | null) {
-  if (Platform.OS === 'web') {
-    try {
-      if (value === null) {
-        localStorage.removeItem(key);
-      } else {
-        localStorage.setItem(key, value);
-      }
-    } catch (e) {
-      console.error('Local storage is unavailable:', e);
-    }
-  } else {
-    if (value == null) {
-      await SecureStore.deleteItemAsync(key);
-    } else {
-      await SecureStore.setItemAsync(key, value);
-    }
-  }
-}
-
-export function useStorageState(key: string): UseStateHook<string> {
-  // Public
-  const [state, setState] = useAsyncState<string>();
-
-  // Get
-  React.useEffect(() => {
-    if (Platform.OS === 'web') {
-      try {
-        if (typeof localStorage !== 'undefined') {
-          setState(localStorage.getItem(key));
-        }
-      } catch (e) {
-        console.error('Local storage is unavailable:', e);
-      }
-    } else {
-      SecureStore.getItemAsync(key).then((value: string | null) => {
-        setState(value);
-      });
-    }
-  }, [key]);
-
-  // Set
-  const setValue = React.useCallback(
-    (value: string | null) => {
-      setState(value);
-      setStorageItemAsync(key, value);
-    },
-    [key]
-  );
-
-  return [state, setValue];
-}