Thanks for your input, I modified it a bit to get the result I wanted! Works like a charm!
getDom: function() {
var wrapper = document.createElement("div");
var button = document.createElement("div");
var text = document.createElement("span");
var hidden = true;
button.className = "hide-toggle";
text.innerHTML = this.config.caption;
text.addEventListener("click", () => this.sendNotification("BUTTON_PRESSED", {}));
button.appendChild(text);
wrapper.appendChild(button);
return wrapper;
}