Top Svelte State Management Libraries

TanStack/query is a powerful and flexible data fetching and caching library for React.

import { useQuery } from '@tanstack/react-query'

function App() {
  const { data, isLoading } = useQuery(['todos'], fetchTodos)
  // ...
}

Pros of TanStack/query

1. Provides a comprehensive set of features for data fetching, caching, and state management, making it a versatile choice for complex applications.
2. Offers excellent performance and optimization through techniques like automatic refetching, background updates, and pagination.
3. Integrates well with various data sources and can be used with both REST and GraphQL APIs.

Cons of TanStack/query

1. Steeper learning curve compared to simpler state management solutions like nanostores/nanostores or redux-zero/redux-zero.
2. Larger bundle size compared to more lightweight alternatives, which may be a concern for some projects.
3. Requires more boilerplate code compared to some other state management libraries, such as chakra-ui/zag.

nanostores/nanostores

nanostores/nanostores is a lightweight and minimalist state management library for JavaScript and TypeScript.

Pros of nanostores/nanostores

1. Extremely small bundle size, making it a great choice for performance-sensitive applications.
2. Simple and straightforward API, making it easy to learn and use.
3. Highly flexible and can be used with any UI framework, not just React.

Cons of nanostores/nanostores

1. Lacks some of the advanced features and functionality provided by TanStack/query.
2. May require more manual setup and configuration for complex state management scenarios.
3. Smaller ecosystem and community compared to more established state management solutions.

1. nanostores/nanostores is a lightweight, reactive state management library for JavaScript and TypeScript.

import { atom } from 'nanostores';

const count = atom(0); count.set(count.get() + 1);

3. **Pros:**
   - Extremely lightweight and fast, with a small bundle size.
   - Provides a simple and intuitive API for managing state.
   - Supports both JavaScript and TypeScript.

4. **Cons:**
   - Lacks some of the advanced features found in larger state management libraries.
   - May not be suitable for large-scale applications with complex state management requirements.

### TanStack/query

1. TanStack/query is a powerful, flexible, and extensible data fetching and caching library for React, Vue, and Svelte.

3. **Pros:**
   - Provides a comprehensive set of features for data fetching and caching.
   - Supports various data sources, including REST APIs, GraphQL, and more.
   - Highly customizable and extensible.

4. **Cons:**
   - Relatively more complex than simpler state management libraries like nanostores/nanostores.
   - May have a steeper learning curve for developers new to the library.

### chakra-ui/zag

1. chakra-ui/zag is a library for building accessible and customizable UI components.

3. **Pros:**
   - Provides a set of highly accessible and customizable UI components.
   - Integrates well with other Chakra UI libraries.
   - Focuses on developer experience and ease of use.

4. **Cons:**
   - Primarily focused on UI components, rather than state management.
   - May not be suitable for complex state management requirements.

### storeon/storeon

1. storeon/storeon is a tiny (167 bytes) state manager, inspired by Redux.

2. ```javascript
import { createStore } from 'storeon';

const store = createStore({ count: 0 });
store.dispatch('increment', 1);

3. Pros:

   • Extremely lightweight and fast.
   • Provides a familiar Redux-like API.
   • Supports both JavaScript and TypeScript.

4. Cons:

   • May not have the same level of features and flexibility as larger state management libraries.
   • Smaller community and ecosystem compared to more popular libraries.

redux-zero/redux-zero

1. redux-zero/redux-zero is a lightweight state management library for React, Preact, and vanilla JavaScript.

2. Pros:

   • Provides a simple and minimalist API for state management.
   • Smaller bundle size compared to traditional Redux.
   • Supports both JavaScript and TypeScript.

3. Cons:

   • May lack some of the advanced features found in larger state management libraries.
   • Smaller community and ecosystem compared to more popular libraries.

Zag is a library for building accessible and customizable UI components using a state machine-based approach.

Code Example (chakra-ui/zag)

import { createZagStore } from '@chakra-ui/zag';

const [useStore, { toggle }] = createZagStore({
  initialState: { isOpen: false },
  transitions: {
    toggle: (state) => ({ isOpen: !state.isOpen }),
  },
});

Pros of chakra-ui/zag

1. State Management: Zag provides a state machine-based approach to managing UI state, which can be more predictable and easier to reason about than traditional state management solutions.
2. Accessibility: Zag is designed with accessibility in mind, making it easier to build inclusive UI components.
3. Customization: Zag allows for a high degree of customization, enabling developers to create unique and visually appealing UI components.

Cons of chakra-ui/zag

1. Learning Curve: The state machine-based approach used by Zag may have a steeper learning curve compared to more traditional state management solutions.
2. Ecosystem: Zag is a relatively new library, and its ecosystem of pre-built components and community support may not be as extensive as some of the other projects in the comparison.
3. Performance: Depending on the complexity of the UI components built with Zag, there may be some performance considerations to take into account.

Storeon is a tiny (2kb) state manager for React, Preact, and Vue.

Code Example

import { createStore } from 'storeon'

const store = createStore({
  counter: 0,
  inc: (state) => ({ counter: state.counter + 1 }),
  dec: (state) => ({ counter: state.counter - 1 })
})

Pros

1. Tiny Size: Storeon is a very lightweight state management solution, weighing in at only 2kb.
2. Simplicity: Storeon's API is straightforward and easy to understand, making it a good choice for small to medium-sized projects.
3. Cross-framework Compatibility: Storeon can be used with React, Preact, and Vue, providing flexibility in your choice of framework.

Cons

1. Limited Features: Compared to more feature-rich state management libraries like TanStack/query or chakra-ui/zag, Storeon may lack advanced functionality.
2. Lack of Ecosystem: Storeon has a smaller community and ecosystem compared to more popular state management solutions like redux-zero/redux-zero.
3. Opinionated Approach: Storeon takes a more opinionated approach to state management, which may not align with the preferences of all developers.

1. Overview: redux-zero is a lightweight, functional state management library for JavaScript applications.

2. Code Example:

import createStore from 'redux-zero';

const store = createStore({ count: 0 });
const { subscribe, dispatch } = store;

Pros vs. Other Projects

1. Simplicity: redux-zero has a simpler API and smaller footprint compared to more feature-rich state management libraries like TanStack/query or chakra-ui/zag.
2. Flexibility: redux-zero's functional approach allows for more flexibility in state management compared to opinionated libraries like nanostores/nanostores or storeon/storeon.
3. Performance: redux-zero's lightweight nature can provide better performance in certain use cases compared to larger, more feature-rich state management solutions.

Cons vs. Other Projects

1. Limited Features: redux-zero lacks some of the advanced features found in libraries like TanStack/query (e.g., caching, optimistic updates) or chakra-ui/zag (e.g., UI components, theming).
2. Community and Ecosystem: redux-zero has a smaller community and ecosystem compared to more popular state management libraries, which may limit the availability of third-party plugins and integrations.
3. Learning Curve: While simpler than some alternatives, redux-zero's functional approach may have a steeper learning curve for developers familiar with more traditional state management patterns.