client side routing works except parameters

renderer/_default.page.client.ts

@@ -1,17 +1,36 @@
 import { createApp } from './app'
 
-import type { PageContextClient } from '#types/PageContext'
+import type { PageContext, VikePageContext } from '#types/PageContext'
 
-// This render() hook only supports SSR, see https://vike.dev/render-modes for how to modify render() to support SPA
-async function render(pageContext: PageContextClient) {
-  const { Page, pageProps } = pageContext
-  if (!Page) throw new Error('Client-side render() hook expects pageContext.Page to be defined')
-  const app = createApp(Page, pageProps, pageContext)
-  app.mount('#app')
+let app: ReturnType<typeof createApp>
+async function render(pageContext: VikePageContext & PageContext) {
+  if (!app) {
+    app = createApp(pageContext)
+    app.mount('#app')
+  } else {
+    // console.log(pageContext)
+    app.changePage(pageContext)
+  }
 }
 
-/* To enable Client-side Routing:
-export const clientRouting = true
-// !! WARNING !! Before doing so, read https://vike.dev/clientRouting */
+function onHydrationEnd() {
+  // eslint-disable-next-line no-console
+  console.log('Hydration finished; page is now interactive.')
+}
+function onPageTransitionStart() {
+  // eslint-disable-next-line no-console
+  console.log('Page transition start')
+  // document.querySelector('.content')!.classList.add('page-transition')
+}
+function onPageTransitionEnd() {
+  // eslint-disable-next-line no-console
+  console.log('Page transition end')
+  // document.querySelector('.content')!.classList.remove('page-transition')
+}
 
+export const clientRouting = true
+export const prefetchStaticAssets = 'viewport'
 export { render }
+export { onHydrationEnd }
+export { onPageTransitionStart }
+export { onPageTransitionEnd }

renderer/_default.page.server.ts

@@ -6,20 +6,14 @@ import { META } from '#src/env'
 
 import { createApp } from './app'
 
-import type { PageContextServer } from '#types/PageContext'
+import type { PageContextServer, PageContext } from '#types/PageContext'
 import type { App } from 'vue'
 
 // See https://vike.dev/data-fetching
-export const passToClient = ['pageProps', 'urlPathname', 'routeParams']
+export const passToClient = ['pageProps', /* 'urlPathname', */ 'routeParams']
 
-async function render(pageContext: PageContextServer) {
-  const { Page, pageProps } = pageContext
-  // This render() hook only supports SSR, see https://vike.dev/render-modes for how to modify render() to support SPA
-  if (!Page) {
-    throw new Error('My render() hook expects pageContext.Page to be defined')
-  }
-
-  const app = createApp(Page, pageProps, pageContext, false)
+async function render(pageContext: PageContextServer & PageContext) {
+  const app = createApp(pageContext, false)
 
   const appHtml = await renderToString(app)
 

renderer/app.ts

@@ -1,32 +1,36 @@
 import piniaPluginPersistedstate from 'pinia-plugin-persistedstate'
-import { createSSRApp, defineComponent, h } from 'vue'
+import { createSSRApp, defineComponent, h, markRaw, reactive } from 'vue'
 
 import PageShell from '#components/PageShell.vue'
 import { setPageContext } from '#context/usePageContext'
 import i18n from '#plugins/i18n'
 import pinia from '#plugins/pinia'
 import CreateVuetify from '#plugins/vuetify'
-import { Page } from '#types/Page'
-import { PageProps } from '#types/PageProps'
 
-import type { PageContext } from '#types/PageContext'
+import type { Component } from '#types/Component'
+import type { PageContext, VikePageContext } from '#types/PageContext'
 
 const vuetify = CreateVuetify(i18n)
 
-function createApp(
-  Page: Page,
-  pageProps: PageProps | undefined,
-  pageContext: PageContext,
-  isClient = true,
-) {
-  const PageWithLayout = defineComponent({
+function createApp(pageContext: VikePageContext & PageContext, isClient = true) {
+  let rootComponent: Component
+  const PageWithWrapper = defineComponent({
+    data: () => ({
+      Page: markRaw(pageContext.Page),
+      pageProps: markRaw(pageContext.pageProps || {}),
+      isClient,
+    }),
+    created() {
+      // eslint-disable-next-line @typescript-eslint/no-this-alias
+      rootComponent = this
+    },
     render() {
       return h(
         PageShell,
         {},
         {
-          default() {
-            return h(Page, pageProps || {})
+          default: () => {
+            return h(this.Page, this.pageProps)
           },
         },
       )
@@ -37,15 +41,35 @@ function createApp(
     pinia.use(piniaPluginPersistedstate)
   }
 
-  const app = createSSRApp(PageWithLayout)
+  const app = createSSRApp(PageWithWrapper)
   app.use(pinia)
   app.use(i18n)
   app.use(vuetify)
 
+  objectAssign(app, {
+    changePage: (pageContext: VikePageContext & PageContext) => {
+      Object.assign(pageContextReactive, reactive(pageContext))
+      rootComponent.Page = markRaw(pageContext.Page)
+      rootComponent.pageProps = markRaw(pageContext.pageProps || {})
+    },
+  })
+
+  // When doing Client Routing, we mutate pageContext (see usage of `app.changePage()` in `_default.page.client.js`).
+  // We therefore use a reactive pageContext.
+  const pageContextReactive = reactive(pageContext)
+
   // Make pageContext available from any Vue component
-  setPageContext(app, pageContext)
+  setPageContext(app, pageContextReactive)
 
   return app
 }
 
+// Same as `Object.assign()` but with type inference
+function objectAssign<Obj extends object, ObjAddendum>(
+  obj: Obj,
+  objAddendum: ObjAddendum,
+): asserts obj is Obj & ObjAddendum {
+  Object.assign(obj, objAddendum)
+}
+
 export { createApp }

renderer/context/usePageContext.ts

@@ -3,11 +3,11 @@
 
 import { inject } from 'vue'
 
-import { PageContext } from '#types/PageContext'
+import { PageContext, VikePageContext } from '#types/PageContext'
 
 import type { App, InjectionKey } from 'vue'
 
-const key: InjectionKey<PageContext> = Symbol(undefined)
+const key: InjectionKey<VikePageContext & PageContext> = Symbol(undefined)
 
 function usePageContext() {
   const pageContext = inject(key)
@@ -15,7 +15,7 @@ function usePageContext() {
   return pageContext
 }
 
-function setPageContext(app: App, pageContext: PageContext) {
+function setPageContext(app: App, pageContext: VikePageContext & PageContext) {
   app.provide(key, pageContext)
 }
 

src/components/VikeBtn.vue

@@ -1,5 +1,5 @@
 <template>
-  <v-btn :variant="isRoutSelected($attrs.href as string) ? 'tonal' : 'flat'">
+  <v-btn :variant="isRouteSelected($attrs.href as string) ? 'tonal' : 'flat'">
     <slot />
   </v-btn>
 </template>
@@ -8,7 +8,7 @@ import { usePageContext } from '#context/usePageContext'
 
 const pageContext = usePageContext()
 
-const isRoutSelected = (href: string) => {
+const isRouteSelected = (href: string) => {
   if (href === '/app') {
     return pageContext.urlPathname.indexOf(href) === 0
   }

src/pages/app/index.page.vue

@@ -37,7 +37,12 @@ import { useCounterStore } from '#stores/counter'
 
 const counter = useCounterStore()
 
+/*
 const {
   routeParams: { id: page },
 } = usePageContext()
+*/
+const { routeParams } = usePageContext()
+const page = routeParams?.id
+// console.log(page)
 </script>

types/Component.ts

@@ -0,0 +1,2 @@
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+export type Component = any

types/PageContext.ts

@@ -3,31 +3,31 @@ import { PageProps } from '#types/PageProps'
 
 export type {
   PageContextServer,
-  /*
-    // When using Client Routing https://vike.dev/clientRouting
-    PageContextClient,
-    PageContext,
-    / */
+
+  // When using Client Routing https://vike.dev/clientRouting
+  PageContextClient,
+  PageContext as VikePageContext,
+  PageContextBuiltInClientWithClientRouting as PageContextBuiltInClient,
   // When using Server Routing
+  /*
   PageContextClientWithServerRouting as PageContextClient,
   PageContextWithServerRouting as PageContext,
+  */
   //* /
 } from 'vike/types'
 
-// https://vike.dev/pageContext#typescript
-declare global {
-  // eslint-disable-next-line @typescript-eslint/no-namespace
-  namespace Vike {
-    interface PageContext {
-      Page: Page
-      pageProps?: PageProps
-      urlPathname: string
-      exports: {
-        documentProps?: {
-          title?: string
-          description?: string
-        }
-      }
+export type PageContext = {
+  Page: Page
+  pageProps?: PageProps
+  urlPathname: string
+  exports: {
+    documentProps?: {
+      title?: string
+      description?: string
     }
   }
+  documentProps?: {
+    title: string
+    description?: string
+  }
 }