097574d4c3
* Optimize middleware regex handling * fix data route matching for middleware
176 lines
5.5 KiB
TypeScript
176 lines
5.5 KiB
TypeScript
import type { ComponentType } from 'react'
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import type { RouteLoader } from './route-loader'
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import { addBasePath } from './add-base-path'
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import { interpolateAs } from '../shared/lib/router/router'
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import getAssetPathFromRoute from '../shared/lib/router/utils/get-asset-path-from-route'
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import { addLocale } from './add-locale'
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import { isDynamicRoute } from '../shared/lib/router/utils/is-dynamic'
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import { parseRelativeUrl } from '../shared/lib/router/utils/parse-relative-url'
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import { removeTrailingSlash } from '../shared/lib/router/utils/remove-trailing-slash'
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import { createRouteLoader, getClientBuildManifest } from './route-loader'
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declare global {
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interface Window {
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__DEV_MIDDLEWARE_MANIFEST?: [location: string, isSSR: boolean][]
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__DEV_PAGES_MANIFEST?: { pages: string[] }
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__SSG_MANIFEST_CB?: () => void
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__SSG_MANIFEST?: Set<string>
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}
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}
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export type StyleSheetTuple = { href: string; text: string }
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export type GoodPageCache = {
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page: ComponentType
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mod: any
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styleSheets: StyleSheetTuple[]
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}
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export default class PageLoader {
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private buildId: string
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private assetPrefix: string
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private promisedSsgManifest: Promise<Set<string>>
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private promisedDevPagesManifest?: Promise<string[]>
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private promisedMiddlewareManifest?: Promise<
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[location: string, isSSR: boolean][]
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>
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public routeLoader: RouteLoader
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constructor(buildId: string, assetPrefix: string) {
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this.routeLoader = createRouteLoader(assetPrefix)
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this.buildId = buildId
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this.assetPrefix = assetPrefix
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this.promisedSsgManifest = new Promise((resolve) => {
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if (window.__SSG_MANIFEST) {
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resolve(window.__SSG_MANIFEST)
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} else {
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window.__SSG_MANIFEST_CB = () => {
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resolve(window.__SSG_MANIFEST!)
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}
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}
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})
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}
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getPageList() {
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if (process.env.NODE_ENV === 'production') {
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return getClientBuildManifest().then((manifest) => manifest.sortedPages)
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} else {
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if (window.__DEV_PAGES_MANIFEST) {
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return window.__DEV_PAGES_MANIFEST.pages
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} else {
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if (!this.promisedDevPagesManifest) {
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// TODO: Decide what should happen when fetching fails instead of asserting
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// @ts-ignore
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this.promisedDevPagesManifest = fetch(
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`${this.assetPrefix}/_next/static/development/_devPagesManifest.json`
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)
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.then((res) => res.json())
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.then((manifest: { pages: string[] }) => {
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window.__DEV_PAGES_MANIFEST = manifest
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return manifest.pages
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})
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.catch((err) => {
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console.log(`Failed to fetch devPagesManifest`, err)
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})
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}
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// TODO Remove this assertion as this could be undefined
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return this.promisedDevPagesManifest!
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}
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}
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}
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getMiddlewareList() {
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if (process.env.NODE_ENV === 'production') {
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const middlewareRegex = process.env.__NEXT_MIDDLEWARE_REGEX
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window.__MIDDLEWARE_MANIFEST = middlewareRegex
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? [[middlewareRegex, false]]
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: []
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return window.__MIDDLEWARE_MANIFEST
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} else {
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if (window.__DEV_MIDDLEWARE_MANIFEST) {
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return window.__DEV_MIDDLEWARE_MANIFEST
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} else {
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if (!this.promisedMiddlewareManifest) {
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// TODO: Decide what should happen when fetching fails instead of asserting
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// @ts-ignore
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this.promisedMiddlewareManifest = fetch(
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`${this.assetPrefix}/_next/static/${this.buildId}/_devMiddlewareManifest.json`
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)
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.then((res) => res.json())
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.then((manifest: [location: string, isSSR: boolean][]) => {
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window.__DEV_MIDDLEWARE_MANIFEST = manifest
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return manifest
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})
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.catch((err) => {
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console.log(`Failed to fetch _devMiddlewareManifest`, err)
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})
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}
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// TODO Remove this assertion as this could be undefined
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return this.promisedMiddlewareManifest!
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}
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}
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}
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getDataHref(params: {
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asPath: string
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href: string
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locale?: string | false
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skipInterpolation?: boolean
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}): string {
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const { asPath, href, locale } = params
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const { pathname: hrefPathname, query, search } = parseRelativeUrl(href)
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const { pathname: asPathname } = parseRelativeUrl(asPath)
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const route = removeTrailingSlash(hrefPathname)
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if (route[0] !== '/') {
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throw new Error(`Route name should start with a "/", got "${route}"`)
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}
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const getHrefForSlug = (path: string) => {
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const dataRoute = getAssetPathFromRoute(
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removeTrailingSlash(addLocale(path, locale)),
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'.json'
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)
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return addBasePath(
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`/_next/data/${this.buildId}${dataRoute}${search}`,
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true
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)
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}
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return getHrefForSlug(
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params.skipInterpolation
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? asPathname
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: isDynamicRoute(route)
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? interpolateAs(hrefPathname, asPathname, query).result
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: route
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)
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}
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/**
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* @param {string} route - the route (file-system path)
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*/
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_isSsg(route: string): Promise<boolean> {
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return this.promisedSsgManifest.then((manifest) => manifest.has(route))
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}
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loadPage(route: string): Promise<GoodPageCache> {
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return this.routeLoader.loadRoute(route).then((res) => {
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if ('component' in res) {
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return {
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page: res.component,
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mod: res.exports,
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styleSheets: res.styles.map((o) => ({
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href: o.href,
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text: o.content,
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})),
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}
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}
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throw res.error
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})
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}
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prefetch(route: string): Promise<void> {
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return this.routeLoader.prefetch(route)
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}
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}
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