const Penpal = require('penpal').default; function setupViamAPI(divId, methodsArg, url) { const connection = Penpal.connectToChild({ // URL of page to load into iframe. url, // Container to which the iframe should be appended. appendTo: document.getElementById(divId), // Methods parent is exposing to child methods: methodsArg }); return connection.promise } window.setupViamAPI = setupViamAPI;