class KeyDisplay extends LitElement {
  private heldKeys = new HeldKeysController(this)

  render() {
    return html`
      <div>
        Currently pressed: ${this.heldKeys.value.join(' + ') || 'None'}
      </div>
    `
  }
}

class KeyDisplay extends LitElement {
  private heldKeys = new HeldKeysController(this)

  render() {
    return html`
      <div>
        Currently pressed: ${this.heldKeys.value.join(' + ') || 'None'}
      </div>
    `
  }
}

new HeldKeysController(_host): HeldKeysController;

new HeldKeysController(_host): HeldKeysController;

get value(): string[];

get value(): string[];

hostConnected(): void;

hostConnected(): void;

ReactiveController.hostConnected

ReactiveController.hostConnected

hostDisconnected(): void;

hostDisconnected(): void;

ReactiveController.hostDisconnected

ReactiveController.hostDisconnected