@acoboyz/react-qstate
v0.1.9
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QueryHook for managing, caching and syncing asynchronous and remote data in React powered by @tanstack/react-query
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useQState - A Custom State Management Hook with TanStack Query and SuperJSON
useQState
is a custom React hook that simplifies state management by leveraging TanStack Query and SuperJSON. It offers an efficient way to manage both global and local state with automatic serialization of complex data types, all while taking advantage of TanStack Query's powerful caching capabilities.
Features
- Seamless State Management: Manage state across your React application without additional state management libraries.
- Automatic Serialization: Effortlessly handle complex data types using SuperJSON.
- Performance Optimizations: Benefit from TanStack Query's caching and performance features.
- Intuitive API: Familiar API similar to React's useState hook.
Installation
First, ensure you have React, TanStack Query:
npm install @tanstack/react-query @acoboyz/react-qstate
Setup
Before using useQState, you need to set up the QueryClient and wrap your application with the QueryClientProvider from TanStack Query.
import React from 'react';
import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
const queryClient = new QueryClient();
function App() {
return (
<QueryClientProvider client={queryClient}>
{/* Your app components go here */}
</QueryClientProvider>
);
}
export default App;
Usage
Importing the Hook
import { useQState } from 'path-to-your-useQState-hook';
Basic Example
Copy code
import React from 'react';
import { useQState } from 'path-to-your-useQState-hook';
function Counter() {
const [count, setCount, resetCount] = useQState<number>(['counter'], 0);
return (
<div>
<p>Count: {count}</p>
<button onClick={() => setCount(prev => prev + 1)}>Increment</button>
<button onClick={resetCount}>Reset</button>
</div>
);
}
Managing Complex Data Types
useQState
automatically serializes and deserializes complex data types like objects and arrays.
import React from 'react';
import { useQState } from 'path-to-your-useQState-hook';
interface UserProfile {
id: number;
name: string;
email: string;
}
function Profile() {
const [user, setUser, resetUser] = useQState<UserProfile | null>(['userProfile'], null);
const updateEmail = (email: string) => {
setUser(prevUser => prevUser ? { ...prevUser, email } : null);
};
return (
<div>
{user ? (
<>
<h1>{user.name}</h1>
<p>{user.email}</p>
<button onClick={() => updateEmail('[email protected]')}>Update Email</button>
</>
) : (
<p>No user data available.</p>
)}
<button onClick={resetUser}>Reset Profile</button>
</div>
);
}
Resetting State
You can reset the state to its initial value using the resetState
function.
const [state, setState, resetState] = useQState(['myStateKey'], initialValue);
// To reset the state
resetState();
How It Works
The useQState
hook uses TanStack Query to manage stateful data and SuperJSON to serialize and deserialize complex data types. Here's a brief overview:
- State Initialization: When you first call
useQState
, it initializes the state with the providedinitialData
. - Data Serialization: If the data is a complex type (object, array, etc.), it gets serialized using SuperJSON.
- Caching: TanStack Query caches the state data, allowing for efficient updates and retrievals.
- State Updates: Use the
setState
function to update the state. It supports both direct updates and updater functions (like React'ssetState
). - State Reset: The
resetState
function invalidates the query and resets the state to its initial value.
Benefits
- Global State Without Additional Libraries: Manage global state without needing Redux or Context API.
- Performance Optimizations: Leverage TanStack Query's caching to minimize unnecessary re-renders and data fetching.
- Automatic Serialization: SuperJSON handles serialization of dates, maps, sets, and other complex types out of the box.
- Simple API: Designed to be as straightforward as React's built-in hooks.
Example: Todo List
import React from 'react';
import { useQState } from 'path-to-your-useQState-hook';
interface Todo {
id: number;
text: string;
completed: boolean;
}
function TodoApp() {
const [todos, setTodos, resetTodos] = useQState<Todo[]>(['todos'], []);
const addTodo = (text: string) => {
setTodos(prevTodos => [...prevTodos, { id: Date.now(), text, completed: false }]);
};
const toggleTodo = (id: number) => {
setTodos(prevTodos =>
prevTodos.map(todo => (todo.id === id ? { ...todo, completed: !todo.completed } : todo))
);
};
return (
<div>
<button onClick={() => addTodo('New Task')}>Add Todo</button>
<button onClick={resetTodos}>Reset Todos</button>
<ul>
{todos.map(todo => (
<li key={todo.id}>
<span
onClick={() => toggleTodo(todo.id)}
style={{ textDecoration: todo.completed ? 'line-through' : undefined }}
>
{todo.text}
</span>
</li>
))}
</ul>
</div>
);
}
Advanced Usage
Using with Local Storage
If you want to persist state across browser sessions, you can integrate localStorage
:
import { useQState } from 'path-to-your-useQState-hook';
function usePersistentState<T>(key: string, initialData: T) {
const [state, setState, resetState] = useQState<T>([key], initialData);
React.useEffect(() => {
const storedData = localStorage.getItem(key);
if (storedData) {
setState(JSON.parse(storedData));
}
}, [key, setState]);
React.useEffect(() => {
localStorage.setItem(key, JSON.stringify(state));
}, [key, state]);
return [state, setState, resetState] as const;
}
Contributing
Contributions are welcome! Feel free to open issues or submit pull requests on the GitHub repository.
License
This project is licensed under the MIT License.
Acknowledgments
- TanStack Query for powerful asynchronous state management.
- SuperJSON for seamless serialization of complex data types.
By providing this hook, we aim to simplify state management in React applications, making it more efficient and developer-friendly. If you have any questions or need further assistance, please don’t hesitate to reach out.