avinal.github.io/src/web-components/Calcom.js

customElements.define(
  "cal-com",
  class extends HTMLElement {
    constructor() {
      super();
    }

    connectedCallback() {
      (function (C, A, L) {
        let p = function (a, ar) {
          a.q.push(ar);
        };
        let d = C.document;
        C.Cal =
          C.Cal ||
          function () {
            let cal = C.Cal;
            let ar = arguments;
            if (!cal.loaded) {
              cal.ns = {};
              cal.q = cal.q || [];
              d.head.appendChild(d.createElement("script")).src = A;
              cal.loaded = true;
            }
            if (ar[0] === L) {
              const api = function () {
                p(api, arguments);
              };
              const namespace = ar[1];
              api.q = api.q || [];
              typeof namespace === "string"
                ? (cal.ns[namespace] = api) && p(api, ar)
                : p(cal, ar);
              return;
            }
            p(cal, ar);
          };
      })(window, "https://app.cal.com/embed/embed.js", "init");
      Cal("init", { origin: "https://app.cal.com" });

      Cal("inline", {
        elementOrSelector: "#calcom-widget",
        calLink: "avinal",
      });
      Cal("ui", {
        theme: "dark",
        styles: {
          branding: { brandColor: "#009fb1" },
        },
        hideEventTypeDetails: false,
      });
      console.log("These errors are not produced by the Elm app :)");
    }
  }
);