react-sst v0.0.7
React-SST
React-SST is the react bindings for sst.
Installation
npm install react-sst
Getting started
First, you should read the documetation for sst.
Provider
React-sst follows a similar pattern to react-redux
if you are familiar with that.
The Provider
component is a React component that belongs at the root of your application. There
can be only one. This provides the sst store to any components in your app which require access
to the global state or any of its transforms.
The first thing you need to do is initialize your sst store. Again, see sst
for more information on how to do that. Then, in your root component, initialize the react-sst
Provider:
import {render} from 'react-dom';
import {Provider} from 'react-sst';
import MyAwesomeApp from './my-awesome-app';
// Assuming that sst has been called and `store` is the resulting variable name
render(
<Provider store={store}>
<MyAwesomeApp />
</Provider>,
document.querySelector('main')
);
Connect
Once you've set up your provider, you are ready to connect your application to the global state. Here's an example:
// current-user.js
import React from 'react';
import {connect} from 'react-sst';
export default connect(function ({$transform, $selector, $state}) {
const {currentUser} = $state;
const {logout} = $transform.currentUser;
const firstName = $selector.currentUser.$firstName();
return (
<nav className="current-user">
<a href={`/profile/${currentUser.id}`>
{firstName} {currentUser.email}
</a>
<button onClick={logout}>
Logout
</button>
</nav>
);
});
The connect
function has passed in $transform, $selector, $state
as props.
- $state - the global state
- $transform - the sst $transform object
- $selector - the sst $selector object
Connect is smart enough not to update your component unless its props change. If some
global state other than currentUser
changes, the example component will not rerender.
However, if global state's currentUser
changes, the example component will rerender.
If you would like to do complex mapping of state to your component, e.g. performing some
expensive computation which you'd like to memoize, you can do this with reselect
. You can
define a mapStateToProps
function and pass it as the first argument to connect
.
Here's an example:
// current-user.js
import React from 'react';
import {connect} from 'react-sst';
// Maybe our user hasn't input their name, so we'll use the email prefix in that case
const mapStateToProps = ({currentUser}) => ({
name: currentUser.name || currentUser.email.split('@')[0]
});
export default connect(function ({$transform, $state, name}) {
const {currentUser} = $state;
const {logout} = $transform.currentUser;
return (
<nav className="current-user">
<a href={`/profile/${currentUser.id}`>
{name} {currentUser.email}
</a>
<button onClick={logout}>
Logout
</button>
</nav>
);
});
License MIT
Copyright (c) 2017 Chris Davies
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.