react-redux-hooks

The easiest way to connect redux. Power by react hooks.

Getting Started

Install

npm install react-redux-hooks

or

yarn add react-redux-hooks

Usage

See full examples

Connect to redux in component

Just use useRedux. It would return state and dispatch

1import { useRedux } from 'react-redux-hooks';
2
3const ToggleButton = () => {
4	const [state, dispatch] = useRedux();
5
6	return (
7		<button onClick={() => dispatch({ type: 'TOGGLE' })}>
8			{state.toggle ? 'Click to close' : 'Click to open'}
9		</button>
10	);
11};

Top level Provider

Just pass redux store with Provider like react-redux.

1import React from 'react';
2import { createStore } from 'redux';
3import { Provider, useRedux } from 'react-redux-hooks';
4
5const store = createStore((state = { toggle: false }, action) => {
6	if (action.type === 'TOGGLE') {
7		return { toggle: !state.toggle };
8	}
9
10	return state;
11});
12
13ReactDOM.render(
14	<Provider store={store}>
15		<ToggleButton />
16	</Provider>,
17	document.getElementById('content'),
18);
19

Advanced usage

Just like react-redux. We combine Selector, and actions creator in react-redux-hooks

1function useRedux(mapStateToHook?, mapDispatchToHook?, options?)

useRedux accepts three different parameters, all optional. By convention, they are called:

• mapStateToHook?: Function
• mapDispatchToHook?: Function | Object
• options?: Object

Define mapStateToHook

Just like mapStateToProps.

mapStateToHook should be defined as a function:

1function mapStateToHook(state)

Arguments

• state is the store.getState() return value

Return

• Must return plain object

Example:

1const mapStateToHook = (state) => state.toggle;
2
3const [toggle, dispatch] = useRedux(mapStateToHook);

Define mapDispatchToHook

Just like mapDispatchToProps.

mapDispatchToHook Could defined as the three types:

• undefined would return dispatch on hook by default
• function would pass dispatch as the function parameter for user customize
• object would combine redux's bindActionCreators by default

Define mapDispatchToHook as the undefined

Return dispatch on hook by default.

Example:

1const [, dispatch] = useRedux();

Define mapDispatchToHook as the function

Pass dispatch as the function parameter for user customize.

Example:

1const mapDispatchToHook = (dispatch) =>  dispatch({ type: 'TOGGLE' });
2
3const [, onToggle] = useRedux(undefined, mapDispatchToHook);

Define mapDispatchToHook as the object

Combine redux's bindActionCreators by default

Example:

1const onToggleAction = () => ({ type: 'TOGGLE' });
2
3const mapDispatchToHook = { onToggle: onToggleAction };
4
5const [, onToggle] = useRedux(undefined, mapDispatchToHook);

More example

Define options as the object

There are two options can be set:

{
  pure?: boolean,
  shouldHooksUpdate?: function
}

• pure: When pure is true, useRedux performs several equality checks that are used to avoid unnecessary calls to change state, and ultimately to render. It uses shallowEqual to compare state/prevState. When pure is false, update state everytime or update state on shouldHooksUpdate return true.
• shouldHooksUpdate: (nextState, prevState) => boolean: You could customize update function. It only works on pure is false.

Roadmap

• Shallow compare
• Customize Selector

Discussion welcome to open issue

Release Notes

see CHANGELOG.md

Contribute

1. Fork it.
2. Create your feature-branch git checkout -b your-new-feature-branch
3. Commit your change git commit -am 'Add new feature'
4. Push to the branch git push origin your-new-feature-branch
5. Create new Pull Request with master branch

Commit Message Style

Please following angular format.

License

The MIT License (MIT)

Copyright (c) 2018 Lee < jessy1092@gmail.com >

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.