Netlify adapter (#2879)

* Netlify adapter

* Remove package.json export that doesnt exist

* Fix out path

* Make netlifyFunctions the default

* Make the dist configurable

* Add an export for the functions

* Append of the file exists

1 files changed, 43 insertions, 0 deletions

diff --git a/packages/integrations/netlify/src/netlify-functions.ts b/packages/integrations/netlify/src/netlify-functions.ts
new file mode 100644
index 000000000..cf6c871a9
--- /dev/null
+++ b/packages/integrations/netlify/src/netlify-functions.ts
@@ -0,0 +1,43 @@
+import { SSRManifest } from 'astro';
+import type { Handler } from "@netlify/functions";
+import { App } from 'astro/app';
+import { polyfill } from '@astrojs/webapi';
+
+polyfill(globalThis, {
+	exclude: 'window document',
+});
+
+interface Args {
+	site?: string;
+}
+
+export const createExports = (manifest: SSRManifest, args: Args) => {
+	const app = new App(manifest);
+	const site = new URL(args.site ?? `https://netlify.com`);
+
+	const handler: Handler = async (event) => {
+		const headers = new Headers(event.headers as any);
+		const request = new Request(new URL(event.path, site).toString(), {
+			method: event.httpMethod,
+			headers
+		});
+
+		if(!app.match(request)) {
+			return {
+				statusCode: 404,
+				body: 'Not found'
+			};
+		}
+
+		const response = await app.render(request);
+		const body = await response.text();
+
+		return {
+			statusCode: 200,
+			headers: Object.fromEntries(response.headers.entries()),
+			body
+		};
+	}
+
+	return { handler };
+};