Class ButtonWebComponent

specs/Modal.helpers.spec.js:197–208

        let wc;
        let button;
        class ButtonWebComponent extends HTMLElement {
          constructor() {
            super();
          }

          connectedCallback() {
            this.innerHTML = '<button>Normal button</button>';
            this.style.display = "block";
            this.style.width = "100px";
            this.style.height = "25px";
          }
        }

        const registerButtonComponent = () => {
          if (window.customElements.get("button-web-component")) {