const extension = require('extensionizer') console.log('blacklister content script loaded.') const port = extension.runtime.connect({ name: 'blacklister' }) port.postMessage({ 'pageLoaded': window.location.hostname }) port.onMessage.addListener(redirectIfBlacklisted) function redirectIfBlacklisted (response) { const { blacklist } = response console.log('blacklister contentscript received blacklist response') const host = window.location.hostname if (blacklist && blacklist === host) { window.location.href = 'https://metamask.io/phishing.html' } }