use-legacy-state

This package provides a custom React Hook that behaves the same way as this.setState from React component classes, which may help you transition a component from a class to a function when you want to use hooks in that component.

Features

• Drop-in replacement for class state
• Shallowly merges objects passed into setState
• Supports a function callback argument, the same as this.setState
• Skips update if function callback argument returns null
• Supports a second function callback argument, to be executed after the state update (same as this.setState)

Installation

$ npm install --save use-legacy-state

Usage

const useLegacyState = require("use-legacy-state");

function Counter(props) {
  const [state, setState] = useLegacyState({ count: 0 });

  return (
    <div>
      Count: {state.count}
      <button onClick={() => setState({ count: state.count + 1 })}>
        Increase
      </button>
    </div>
  );
}

License

MIT