message: check mounted in web component
diff: @@ -30,7 +30,7 @@ export const customElement = (componentClass, options: CustomElementOptions = {}
  const children = this.children ? Array.from(this.children) : [];
  children.forEach(el => el.parentElement.removeChild(el));
  this._component = new componentClass({ ...props, children }).mount(this._shadowRoot, opts);
  - this._component.mounted(props, children);
  + this._component.mounted && this._component.mounted(props, children);
  this.on = this._component.on.bind(this._component);
  this.run = this._component.run.bind(this._component);
  }
  