Node.js standalone mode + support for astro preview (#5056)

* wip

* Deprecate buildConfig and move to config.build

* Implement the standalone server

* Stay backwards compat

* Add changesets

* correctly merge URLs

* Get config earlier

* update node tests

* Return the preview server

* update remaining tests

* swap usage and config ordering

* Update packages/astro/src/@types/astro.ts

Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca>

* Update .changeset/metal-pumas-walk.md

Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca>

* Update .changeset/metal-pumas-walk.md

Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca>

* Update .changeset/stupid-points-refuse.md

Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca>

* Update .changeset/stupid-points-refuse.md

Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca>

* Link to build.server config

Co-authored-by: Fred K. Schott <fkschott@gmail.com>
Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca>

1 files changed, 27 insertions, 7 deletions

diff --git a/packages/integrations/cloudflare/src/index.ts b/packages/integrations/cloudflare/src/index.ts
index 13c8578ee..9cf6412b8 100644
--- a/packages/integrations/cloudflare/src/index.ts
+++ b/packages/integrations/cloudflare/src/index.ts
@@ -1,4 +1,4 @@
-import type { AstroAdapter, AstroConfig, AstroIntegration, BuildConfig } from 'astro';
+import type { AstroAdapter, AstroConfig, AstroIntegration } from 'astro';
 import esbuild from 'esbuild';
 import * as fs from 'fs';
 import { fileURLToPath } from 'url';
@@ -7,6 +7,12 @@ type Options = {
 	mode: 'directory' | 'advanced';
 };
 
+interface BuildConfig {
+	server: URL;
+	client: URL;
+	serverEntry: string;
+}
+
 export function getAdapter(isModeDirectory: boolean): AstroAdapter {
 	return isModeDirectory
 		? {
@@ -29,14 +35,26 @@ const SHIM = `globalThis.process = {
 export default function createIntegration(args?: Options): AstroIntegration {
 	let _config: AstroConfig;
 	let _buildConfig: BuildConfig;
+	let needsBuildConfig = false;
 	const isModeDirectory = args?.mode === 'directory';
 
 	return {
 		name: '@astrojs/cloudflare',
 		hooks: {
+			'astro:config:setup': ({ config, updateConfig }) => {
+				needsBuildConfig = !config.build.client;
+				updateConfig({
+					build: {
+						client: new URL('./static/', config.outDir),
+						server: new URL('./', config.outDir),
+						serverEntry: '_worker.js',
+					}
+				});
+			},
 			'astro:config:done': ({ setAdapter, config }) => {
 				setAdapter(getAdapter(isModeDirectory));
 				_config = config;
+				_buildConfig = config.build;
 
 				if (config.output === 'static') {
 					throw new Error(`
@@ -45,12 +63,6 @@ export default function createIntegration(args?: Options): AstroIntegration {
 `);
 				}
 			},
-			'astro:build:start': ({ buildConfig }) => {
-				_buildConfig = buildConfig;
-				buildConfig.client = new URL('./static/', _config.outDir);
-				buildConfig.serverEntry = '_worker.js';
-				buildConfig.server = new URL('./', _config.outDir);
-			},
 			'astro:build:setup': ({ vite, target }) => {
 				if (target === 'server') {
 					vite.resolve = vite.resolve || {};
@@ -69,6 +81,14 @@ export default function createIntegration(args?: Options): AstroIntegration {
 					vite.ssr.target = vite.ssr.target || 'webworker';
 				}
 			},
+			'astro:build:start': ({ buildConfig }) => {
+				// Backwards compat
+				if(needsBuildConfig) {
+					buildConfig.client = new URL('./static/', _config.outDir);
+					buildConfig.server = new URL('./', _config.outDir);
+					buildConfig.serverEntry = '_worker.js';
+				}
+			},
 			'astro:build:done': async () => {
 				const entryUrl = new URL(_buildConfig.serverEntry, _buildConfig.server);
 				const pkg = fileURLToPath(entryUrl);