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, 18 insertions, 10 deletions

diff --git a/packages/integrations/netlify/src/integration-functions.ts b/packages/integrations/netlify/src/integration-functions.ts
index d78fb1f32..025250bc1 100644
--- a/packages/integrations/netlify/src/integration-functions.ts
+++ b/packages/integrations/netlify/src/integration-functions.ts
@@ -22,19 +22,25 @@ function netlifyFunctions({
 }: NetlifyFunctionsOptions = {}): AstroIntegration {
 	let _config: AstroConfig;
 	let entryFile: string;
+	let needsBuildConfig = false;
 	return {
 		name: '@astrojs/netlify',
 		hooks: {
-			'astro:config:setup': ({ config }) => {
-				if (dist) {
-					config.outDir = dist;
-				} else {
-					config.outDir = new URL('./dist/', config.root);
-				}
+			'astro:config:setup': ({ config, updateConfig }) => {
+				needsBuildConfig = !config.build.client;
+				const outDir = dist ?? new URL('./dist/', config.root);
+				updateConfig({
+					outDir,
+					build: {
+						client: outDir,
+						server: new URL('./.netlify/functions-internal/', config.root),
+					}
+				});
 			},
 			'astro:config:done': ({ config, setAdapter }) => {
 				setAdapter(getAdapter({ binaryMediaTypes }));
 				_config = config;
+				entryFile = config.build.serverEntry.replace(/\.m?js/, '');
 
 				if (config.output === 'static') {
 					console.warn(`[@astrojs/netlify] \`output: "server"\` is required to use this adapter.`);
@@ -43,10 +49,12 @@ function netlifyFunctions({
 					);
 				}
 			},
-			'astro:build:start': async ({ buildConfig }) => {
-				entryFile = buildConfig.serverEntry.replace(/\.m?js/, '');
-				buildConfig.client = _config.outDir;
-				buildConfig.server = new URL('./.netlify/functions-internal/', _config.root);
+			'astro:build:start': ({ buildConfig }) => {
+				if(needsBuildConfig) {
+					buildConfig.client = _config.outDir;
+					buildConfig.server = new URL('./.netlify/functions-internal/', _config.root);
+					entryFile = buildConfig.serverEntry.replace(/\.m?js/, '');
+				}
 			},
 			'astro:build:done': async ({ routes, dir }) => {
 				await createRedirects(routes, dir, entryFile, false);