REACT: Class Component with Constructor - TypeScript

Button.tsx

export interface ButtonProps {
  label?: string;
}

export interface ButtonState {
  //
}

class Button extends React.Component<ButtonProps, ButtonState> {
  constructor(props: ButtonProps) {
    super(props);
    this.state = {
      //
    };
  }

  render() {
    return <button>{this.props.label}</button>;
  }
}

export default Button;