const Iframe = require('iframe') const IframeStream = require('iframe-stream').IframeStream module.exports = setupIframe function setupIframe(opts) { opts = opts || {} var frame = Iframe({ src: opts.zeroClientProvider || 'https://zero.metamask.io/', container: document.head, sandboxAttributes: opts.sandboxAttributes || ['allow-scripts', 'allow-popups'], }) var iframe = frame.iframe var iframeStream = new IframeStream(iframe) return iframeStream }