b5d61579c8
* Make sure to error on serverless prerender failure * Add test case * Update index.test.js
193 lines
5.4 KiB
JavaScript
193 lines
5.4 KiB
JavaScript
import mkdirpModule from 'mkdirp'
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import { promisify } from 'util'
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import { extname, join, dirname, sep } from 'path'
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import { renderToHTML } from '../next-server/server/render'
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import { writeFile, access } from 'fs'
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import AmpHtmlValidator from 'amphtml-validator'
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import { loadComponents } from '../next-server/server/load-components'
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import { isDynamicRoute } from '../next-server/lib/router/utils/is-dynamic'
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import { getRouteMatcher } from '../next-server/lib/router/utils/route-matcher'
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import { getRouteRegex } from '../next-server/lib/router/utils/route-regex'
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const envConfig = require('../next-server/lib/runtime-config')
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const writeFileP = promisify(writeFile)
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const mkdirp = promisify(mkdirpModule)
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const accessP = promisify(access)
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global.__NEXT_DATA__ = {
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nextExport: true
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}
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export default async function ({
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path,
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pathMap,
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distDir,
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buildId,
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outDir,
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renderOpts,
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serverRuntimeConfig,
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subFolders,
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serverless
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}) {
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let results = {
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ampValidations: []
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}
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try {
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let { query = {} } = pathMap
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const { page, sprPage } = pathMap
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const filePath = path === '/' ? '/index' : path
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const ampPath = `${filePath}.amp`
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// Check if the page is a specified dynamic route
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if (isDynamicRoute(page) && page !== path) {
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const params = getRouteMatcher(getRouteRegex(page))(path)
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if (params) {
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query = {
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...query,
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...params
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}
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} else {
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throw new Error(
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`The provided export path '${path}' doesn't match the '${page}' page.\nRead more: https://err.sh/zeit/next.js/export-path-mismatch`
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)
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}
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}
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const headerMocks = {
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headers: {},
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getHeader: () => ({}),
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setHeader: () => {},
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hasHeader: () => false,
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removeHeader: () => {},
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getHeaderNames: () => []
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}
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const req = {
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url: path,
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...headerMocks
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}
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const res = {
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...headerMocks
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}
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if (sprPage && isDynamicRoute(page)) {
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query._nextPreviewSkeleton = 1
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// pass via `req` to avoid adding code to serverless bundle
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req.url += (req.url.includes('?') ? '&' : '?') + '_nextPreviewSkeleton=1'
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}
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envConfig.setConfig({
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serverRuntimeConfig,
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publicRuntimeConfig: renderOpts.runtimeConfig
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})
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let htmlFilename = `${filePath}${sep}index.html`
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if (!subFolders) htmlFilename = `${filePath}.html`
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const pageExt = extname(page)
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const pathExt = extname(path)
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// Make sure page isn't a folder with a dot in the name e.g. `v1.2`
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if (pageExt !== pathExt && pathExt !== '') {
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// If the path has an extension, use that as the filename instead
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htmlFilename = path
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} else if (path === '/') {
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// If the path is the root, just use index.html
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htmlFilename = 'index.html'
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}
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const baseDir = join(outDir, dirname(htmlFilename))
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const htmlFilepath = join(outDir, htmlFilename)
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await mkdirp(baseDir)
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let html
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let curRenderOpts = {}
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let renderMethod = renderToHTML
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if (serverless) {
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renderMethod = require(join(
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distDir,
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'serverless/pages',
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(page === '/' ? 'index' : page) + '.js'
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)).renderReqToHTML
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const result = await renderMethod(req, res, true)
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curRenderOpts = result.renderOpts || {}
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html = result.html
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if (!html) {
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throw new Error(`Failed to render serverless page`)
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}
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} else {
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const components = await loadComponents(
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distDir,
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buildId,
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page,
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serverless
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)
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if (typeof components.Component === 'string') {
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html = components.Component
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} else {
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curRenderOpts = { ...components, ...renderOpts, ampPath }
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html = await renderMethod(req, res, page, query, curRenderOpts)
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}
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}
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const validateAmp = async (html, page) => {
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const validator = await AmpHtmlValidator.getInstance()
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const result = validator.validateString(html)
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const errors = result.errors.filter(e => e.severity === 'ERROR')
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const warnings = result.errors.filter(e => e.severity !== 'ERROR')
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if (warnings.length || errors.length) {
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results.ampValidations.push({
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page,
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result: {
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errors,
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warnings
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}
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})
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}
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}
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if (curRenderOpts.inAmpMode) {
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await validateAmp(html, path)
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} else if (curRenderOpts.hybridAmp) {
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// we need to render the AMP version
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let ampHtmlFilename = `${ampPath}${sep}index.html`
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if (!subFolders) {
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ampHtmlFilename = `${ampPath}.html`
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}
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const ampBaseDir = join(outDir, dirname(ampHtmlFilename))
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const ampHtmlFilepath = join(outDir, ampHtmlFilename)
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try {
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await accessP(ampHtmlFilepath)
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} catch (_) {
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// make sure it doesn't exist from manual mapping
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let ampHtml
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if (serverless) {
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req.url += (req.url.includes('?') ? '&' : '?') + 'amp=1'
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ampHtml = (await renderMethod(req, res, true)).html
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} else {
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ampHtml = await renderMethod(
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req,
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res,
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page,
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{ ...query, amp: 1 },
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curRenderOpts
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)
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}
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await validateAmp(ampHtml, page + '?amp=1')
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await mkdirp(ampBaseDir)
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await writeFileP(ampHtmlFilepath, ampHtml, 'utf8')
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}
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}
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await writeFileP(htmlFilepath, html, 'utf8')
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return results
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} catch (error) {
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console.error(`\nError occurred prerendering ${path}:`, error)
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return { ...results, error: true }
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}
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}
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