migrate.js

document.addEventListener("DOMContentLoaded", function() {
  var tellerConnect = TellerConnect.setup({
    applicationId: "your_app_id",
    skipPicker: true,
    onInit: function() {
      document.querySelector("button.teller-connect").addEventListener("click", function() {
        tellerConnect.open({institution: "chase"})
      })
    },
    onSuccess: function(enrollment) {
      console.log("User enrolled successfully", enrollment.accessToken);
    }
  });
});