Class

script-block.js:9–23

  if (elementClass === undefined) {
    elementClass = class extends HTMLElement {
      constructor() {
        super();

        this._shadow = this.attachShadow({ mode: "open" });
        this.render();

        this.addEventListener(
          "click",
          (e) => e.stopImmediatePropagation(),
        );
      }

      render() {}
    };

    elements.set(name, elementClass);
    customElements.define(name, elementClass);