Rematch is Redux best practices without the boilerplate. No more action types, action creators, switch statements or thunks.
- Getting Started
- Purpose
- Examples
- Migration Guide
- API Reference
- Recipes
- Plugins
- Inspiration
npm install @rematch/coreinit configures your reducers, devtools & store.
import { init } from '@rematch/core'
import * as models from './models'
const store = init({
models,
})For a more advanced setup, see plugins and Redux config options.
The model brings together state, reducers, async actions & action creators in one place.
export const count = {
state: 0, // initial state
reducers: {
// handle state changes with pure functions
increment(state, payload) {
return state + payload
}
},
effects: {
// handle state changes with impure functions.
// use async/await for async actions
async incrementAsync(payload, rootState) {
await new Promise(resolve => setTimeout(resolve, 1000))
this.increment(payload)
}
}
}Understanding models is as simple as answering a few questions:
- What is my initial state? state
- How do I change the state? reducers
- How do I handle async actions? effects with async/await
dispatch is how we trigger reducers & effects in your models. Dispatch standardizes your actions without the need for writing action types or action creators.
import { dispatch } from '@rematch/core'
// state = { count: 0 }
// reducers
dispatch({ type: 'count/increment', payload: 1 }) // state = { count: 1 }
dispatch.count.increment(1) // state = { count: 2 }
// effects
dispatch({ type: 'count/incrementAsync', payload: 1 }) // state = { count: 3 } after delay
dispatch.count.incrementAsync(1) // state = { count: 4 } after delayDispatch can be called directly, or with the dispatch[model][action](payload) shorthand.
import React from 'react'
import ReactDOM from 'react-dom'
import { Provider, connect } from 'react-redux'
import { init } from '@rematch/core'
// State
const count = {
state: 0, // initial state
reducers: {
// handle state changes with pure functions
increment(state, payload) {
return state + payload
}
},
effects: {
// handle state changes with impure functions.
// use async/await for async actions
async incrementAsync(payload, rootState) {
await new Promise(resolve => setTimeout(resolve, 1000))
this.increment(payload)
}
}
}
const store = init({
models: {
count
}
})
// View
const Count = props => (
<div>
The count is {props.count}
<button onClick={props.increment}>increment</button>
<button onClick={props.incrementAsync}>incrementAsync</button>
</div>
)
const mapState = state => ({
count: state.count
})
const mapDispatch = ({ count: { increment, incrementAsync }}) => ({
increment: () => increment(1),
incrementAsync: () => incrementAsync(1)
})
const CountContainer = connect(mapState, mapDispatch)(Count)
ReactDOM.render(
<Provider store={store}>
<CountContainer />
</Provider>,
document.getElementById('root')
)Moving from Redux to Rematch involves very few steps.
See the @rematch/core API
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