| import Router from '../router' | |
| import { sendMessage } from './hot-reloader/pages/websocket' | |
| export default async (page?: string) => { | |
| // Never send pings when using Turbopack as it's not used. | |
| // Pings were originally used to keep track of active routes in on-demand-entries with webpack. | |
| if (process.env.TURBOPACK) { | |
| return | |
| } | |
| if (page) { | |
| // in AMP the router isn't initialized on the client and | |
| // client-transitions don't occur so ping initial page | |
| setInterval(() => { | |
| sendMessage(JSON.stringify({ event: 'ping', page })) | |
| }, 2500) | |
| } else { | |
| Router.ready(() => { | |
| setInterval(() => { | |
| // when notFound: true is returned we should use the notFoundPage | |
| // as the Router.pathname will point to the 404 page but we want | |
| // to ping the source page that returned notFound: true instead | |
| const notFoundSrcPage = self.__NEXT_DATA__.notFoundSrcPage | |
| const pathname = | |
| (Router.pathname === '/404' || Router.pathname === '/_error') && | |
| notFoundSrcPage | |
| ? notFoundSrcPage | |
| : Router.pathname | |
| sendMessage(JSON.stringify({ event: 'ping', page: pathname })) | |
| }, 2500) | |
| }) | |
| } | |
| } | |