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/* globals __webpack_hash__ */
import { displayContent } from './fouc'
import initOnDemandEntries from './on-demand-entries-client'
import { addMessageListener, connectHMR } from './hot-reloader/pages/websocket'
import { HMR_ACTIONS_SENT_TO_BROWSER } from '../../server/dev/hot-reloader-types'
import { reportInvalidHmrMessage } from './hot-reloader/shared'
/// <reference types="webpack/module.d.ts" />
const data = JSON.parse(
(document.getElementById('__NEXT_DATA__') as any).textContent
)
window.__NEXT_DATA__ = data
let { assetPrefix, page } = data
assetPrefix = assetPrefix || ''
let mostRecentHash: null | string = null
/* eslint-disable-next-line */
let curHash = __webpack_hash__
const hotUpdatePath =
assetPrefix + (assetPrefix.endsWith('/') ? '' : '/') + '_next/static/webpack/'
// Is there a newer version of this code available?
function isUpdateAvailable() {
// __webpack_hash__ is the hash of the current compilation.
// It's a global variable injected by Webpack.
/* eslint-disable-next-line */
return mostRecentHash !== __webpack_hash__
}
// Webpack disallows updates in other states.
function canApplyUpdates() {
return module.hot.status() === 'idle'
}
// This function reads code updates on the fly and hard
// reloads the page when it has changed.
async function tryApplyUpdates() {
if (!isUpdateAvailable() || !canApplyUpdates()) {
return
}
try {
const res = await fetch(
typeof __webpack_runtime_id__ !== 'undefined'
? // eslint-disable-next-line no-undef
`${hotUpdatePath}${curHash}.${__webpack_runtime_id__}.hot-update.json`
: `${hotUpdatePath}${curHash}.hot-update.json`
)
const jsonData = await res.json()
const curPage = page === '/' ? 'index' : page
// webpack 5 uses an array instead
const pageUpdated = (
Array.isArray(jsonData.c) ? jsonData.c : Object.keys(jsonData.c)
).some((mod: string) => {
return (
mod.indexOf(
`pages${curPage.startsWith('/') ? curPage : `/${curPage}`}`
) !== -1 ||
mod.indexOf(
`pages${curPage.startsWith('/') ? curPage : `/${curPage}`}`.replace(
/\//g,
'\\'
)
) !== -1
)
})
if (pageUpdated) {
window.location.reload()
} else {
curHash = mostRecentHash as string
}
} catch (err) {
console.error('Error occurred checking for update', err)
window.location.reload()
}
}
addMessageListener((message) => {
if (!('action' in message)) {
return
}
try {
// actions which are not related to amp-dev
if (
message.action === HMR_ACTIONS_SENT_TO_BROWSER.SERVER_ERROR ||
message.action === HMR_ACTIONS_SENT_TO_BROWSER.DEV_PAGES_MANIFEST_UPDATE
) {
return
}
if (
message.action === HMR_ACTIONS_SENT_TO_BROWSER.SYNC ||
message.action === HMR_ACTIONS_SENT_TO_BROWSER.BUILT
) {
if (!message.hash) {
return
}
mostRecentHash = message.hash
tryApplyUpdates()
} else if (message.action === HMR_ACTIONS_SENT_TO_BROWSER.RELOAD_PAGE) {
window.location.reload()
}
} catch (err: unknown) {
reportInvalidHmrMessage(message, err)
}
})
connectHMR({
assetPrefix,
path: '/_next/webpack-hmr',
})
displayContent()
initOnDemandEntries(data.page)
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