react.usestate typescript code example

Example 1: state in react typescript

interface IProps {
}

interface IState {
  playOrPause?: string;
}

class Player extends React.Component<IProps, IState> {
  // ------------------------------------------^
  constructor(props: IProps) {
    super(props);

    this.state = {
      playOrPause: 'Play'
    };
  }

  render() {
    return(
      <div>
        <button
          ref={playPause => this.playPause = playPause}
          title={this.state.playOrPause} // in this line I get an error
        >
          Play
        </button>
      </div>
    );
  }
}

Example 2: type usestate typescript

interface Provider {
  connected: boolean;
  type: string;
}
const [wearablesList, setWearablesList] = useState<Provider[]>([]);

Example 3: type usestate([])

const [products, setProducts] = useState<Props[]>([]);