fix(integrations): `astro:build:done` dir now matches SSR client output (#3008)

* `dir` now matches client output

* Updated integrations

* Changeset

5 files changed, 20 insertions, 7 deletions

diff --git a/.changeset/empty-pens-talk.md b/.changeset/empty-pens-talk.md
new file mode 100644
index 000000000..98133ddd1
--- /dev/null
+++ b/.changeset/empty-pens-talk.md
@@ -0,0 +1,7 @@
+---
+'astro': patch
+'@astrojs/partytown': patch
+'@astrojs/vercel': patch
+---
+
+Updated integrations' `astro:build:done` hook: now it matches the client dist when using SSR
diff --git a/packages/astro/src/core/build/index.ts b/packages/astro/src/core/build/index.ts
index ae6d9ff3e..98c8f1e8d 100644
--- a/packages/astro/src/core/build/index.ts
+++ b/packages/astro/src/core/build/index.ts
@@ -174,6 +174,7 @@ class AstroBuilder {
 		await viteServer.close();
 		await runHookBuildDone({
 			config: this.config,
+			buildConfig,
 			pages: pageNames,
 			routes: Object.values(allPages).map((pd) => pd.route),
 		});
diff --git a/packages/astro/src/integrations/index.ts b/packages/astro/src/integrations/index.ts
index 9e96b1a5a..452081e48 100644
--- a/packages/astro/src/integrations/index.ts
+++ b/packages/astro/src/integrations/index.ts
@@ -4,6 +4,7 @@ import { AstroConfig, AstroRenderer, BuildConfig, RouteData } from '../@types/as
 import { mergeConfig } from '../core/config.js';
 import ssgAdapter from '../adapter-ssg/index.js';
 import type { ViteConfigWithSSR } from '../core/create-vite.js';
+import { isBuildingToSSR } from '../core/util.js';
 
 export async function runHookConfigSetup({
 	config: _config,
@@ -136,18 +137,22 @@ export async function runHookBuildSetup({
 
 export async function runHookBuildDone({
 	config,
+	buildConfig,
 	pages,
 	routes,
 }: {
 	config: AstroConfig;
+	buildConfig: BuildConfig;
 	pages: string[];
 	routes: RouteData[];
 }) {
+	const dir = isBuildingToSSR(config) ? buildConfig.client : config.outDir;
+
 	for (const integration of config.integrations) {
 		if (integration.hooks['astro:build:done']) {
 			await integration.hooks['astro:build:done']({
 				pages: pages.map((p) => ({ pathname: p })),
-				dir: config.outDir,
+				dir,
 				routes,
 			});
 		}
diff --git a/packages/integrations/partytown/src/index.ts b/packages/integrations/partytown/src/index.ts
index ebd133e33..7f235b776 100644
--- a/packages/integrations/partytown/src/index.ts
+++ b/packages/integrations/partytown/src/index.ts
@@ -32,8 +32,8 @@ export default function createPlugin(): AstroIntegration {
 					})
 				);
 			},
-			'astro:build:done': async () => {
-				await copyLibFiles(fileURLToPath(new URL('~partytown', config.outDir)), {
+			'astro:build:done': async ({ dir }) => {
+				await copyLibFiles(fileURLToPath(new URL('~partytown', dir)), {
 					debugDir: false,
 				});
 			},
diff --git a/packages/integrations/vercel/src/index.ts b/packages/integrations/vercel/src/index.ts
index 59561a852..b780f6d37 100644
--- a/packages/integrations/vercel/src/index.ts
+++ b/packages/integrations/vercel/src/index.ts
@@ -35,7 +35,7 @@ export default function vercel(): AstroIntegration {
 				buildConfig.client = new URL('./static/', _config.outDir);
 				buildConfig.server = new URL('./server/tmp/', _config.outDir);
 			},
-			'astro:build:done': async ({ dir, routes }) => {
+			'astro:build:done': async ({ routes }) => {
 				/*
 					Why do we need two folders? Why don't we just generate all inside `server/pages/`?
 					When the app builds, it throws some metadata inside a `chunks/` folder.
@@ -50,8 +50,8 @@ export default function vercel(): AstroIntegration {
 					need to bundle as much as possible in one file. Hence, the following code
 				*/
 
-				const tmpDir = new URL('./server/tmp/', dir);
-				const bundleDir = new URL('./server/pages/', dir);
+				const tmpDir = new URL('./server/tmp/', _config.outDir);
+				const bundleDir = new URL('./server/pages/', _config.outDir);
 
 				await fs.mkdir(bundleDir, { recursive: true });
 
@@ -69,7 +69,7 @@ export default function vercel(): AstroIntegration {
 
 				// Routes Manifest
 				// https://vercel.com/docs/file-system-api#configuration/routes
-				await writeJson(new URL(`./routes-manifest.json`, dir), {
+				await writeJson(new URL(`./routes-manifest.json`, _config.outDir), {
 					version: 3,
 					basePath: '/',
 					pages404: false,