import 'event-source-polyfill' import connect from './dev-error-overlay/hot-dev-client' export default ({assetPrefix}) => { const options = { path: `${assetPrefix}/_next/webpack-hmr` } const devClient = connect(options) devClient.subscribeToHmrEvent((obj) => { if (obj.action === 'reloadPage') { return window.location.reload() } if (obj.action === 'removedPage') { const [page] = obj.data if (page === window.next.router.pathname) { return window.location.reload() } return } if (obj.action === 'addedPage') { const [page] = obj.data if (page === window.next.router.pathname && typeof window.next.router.components[page] === 'undefined') { return window.location.reload() } return } throw new Error('Unexpected action ' + obj.action) }) return devClient }