Simple render-saving library for your React components.

• saves from writing simple-but-repeating shouldComponentUpdate
• ideal for react-redux *
• ideal for plugin-like components when you're not controlling the props you are receiving and you don't rely on some of them when rendering
• 1,5 kB of source code, should be few hundreds of bytes of minified & gzippped code

• • mapDispatchToProps is returning new method instances (even if they don't rely on ownProps) for each redux state change. If your state change doesn't affect data you're returning with mapStateToProps - your connected component will be re-rendered even when using PureComponent

Proper docs are in @TODO state, sorry :)

tl;dr:

class MyComponent extends PureComponent {
    render() {
        return (
            <>
                <div>{this.props.title}</div>
                <button onClick={this.props.update}>update</button>
            </>
        );
    }
}

// other props will still be passed, but their updates will be ignored
export default rerender.on(MyComponent, ["title"]); 

• docs
• unit tests

MIT