failing typescript stuff

failing.tsx

Warning: setState(...): Can only update a mounted or mounting component. This usually means you called setState() on an unmounted component. This is a no-op.

Please check the code for the HelloWorld component.

working.tsx

import * as React from "react";

// Provider
export default class HelloWorld extends React.Component<{}, any> {
  constructor(props: any) {
    super(props);
    this.state = { name: "" };
  }

  handleChange(event: any): void {
    this.setState({ name: "Charles" });
  }

  render() {
    return (
      <div>
        Hello {this.state.name}!
        <button name="Update" onClick={e => this.handleChange(e)}>
          Update
        </button>
      </div>
    );
  }
}