Fix use of dynamic imports / Astro.glob with Deno Deploy (#3532)

* Fix use of dynamic imports / Astro.glob with Deno Deploy

* Adds a changeset

* Mark the markdown package as external

.changeset/swift-pigs-shave.md

@@ -0,0 +1,5 @@
+---
+'@astrojs/deno': patch
+---
+
+Fix for using Astro.glob when using the Deno Deploy adapter

packages/integrations/deno/package.json

@@ -22,7 +22,12 @@
     "build": "astro-scripts build \"src/**/*.ts\" && tsc",
     "build:ci": "astro-scripts build \"src/**/*.ts\"",
     "dev": "astro-scripts dev \"src/**/*.ts\"",
-    "test": "deno test --allow-run --allow-read --allow-env --allow-net ./test/"
+    "test:import": "deno test --allow-run --allow-env --allow-read --allow-net --ignore=test/dynamic-import.test.js ./test/",
+    "test:subprocess": "deno test --allow-run --allow-env --allow-net ./test/dynamic-import.test.js",
+    "test": "npm run test:import && npm run test:subprocess"
+  },
+  "dependencies": {
+    "esbuild": "^0.14.42"
   },
   "devDependencies": {
     "astro": "workspace:*",

packages/integrations/deno/src/index.ts

@@ -1,4 +1,8 @@
 import type { AstroAdapter, AstroIntegration } from 'astro';
+import { fileURLToPath } from 'url';
+import esbuild from 'esbuild';
+import * as npath from 'path';
+import * as fs from 'fs';
 
 interface Options {
 	port?: number;
@@ -15,14 +19,20 @@ export function getAdapter(args?: Options): AstroAdapter {
 }
 
 export default function createIntegration(args?: Options): AstroIntegration {
+	let _buildConfig: any;
+	let _vite: any;
 	return {
 		name: '@astrojs/deno',
 		hooks: {
 			'astro:config:done': ({ setAdapter }) => {
 				setAdapter(getAdapter(args));
 			},
+			'astro:build:start': ({ buildConfig }) => {
+				_buildConfig = buildConfig;
+			},
 			'astro:build:setup': ({ vite, target }) => {
 				if (target === 'server') {
+					_vite = vite;
 					vite.resolve = vite.resolve || {};
 					vite.resolve.alias = vite.resolve.alias || {};
 
@@ -41,6 +51,28 @@ export default function createIntegration(args?: Options): AstroIntegration {
 					};
 				}
 			},
+			'astro:build:done': async () => {
+				const entryUrl = new URL(_buildConfig.serverEntry, _buildConfig.server);
+				const pth = fileURLToPath(entryUrl);
+				await esbuild.build({
+					target: 'es2020',
+					platform: 'browser',
+					entryPoints: [pth],
+					outfile: pth,
+					allowOverwrite: true,
+					format: 'esm',
+					bundle: true,
+					external: [ "@astrojs/markdown-remark"]
+				});
+
+				// Remove chunks, if they exist. Since we have bundled via esbuild these chunks are trash.
+				try {
+					const chunkFileNames = _vite?.build?.rollupOptions?.output?.chunkFileNames ?? 'chunks/chunk.[hash].mjs';
+					const chunkPath = npath.dirname(chunkFileNames);
+					const chunksDirUrl = new URL(chunkPath + '/', _buildConfig.server);
+					await fs.promises.rm(chunksDirUrl, { recursive: true, force: true });
+				} catch {}
+			}
 		},
 	};
 }

packages/integrations/deno/src/server.ts

@@ -32,13 +32,15 @@ export function start(manifest: SSRManifest, options: Options) {
 		return fetch(localPath.toString());
 	};
 
+	const port = options.port ?? 8085;
 	_server = new Server({
-		port: options.port ?? 8085,
+		port,
 		hostname: options.hostname ?? '0.0.0.0',
 		handler,
 	});
 
-	_startPromise = _server.listenAndServe();
+	_startPromise = Promise.resolve(_server.listenAndServe());
+	console.error(`Server running on port ${port}`);
 }
 
 export function createExports(manifest: SSRManifest, options: Options) {

packages/integrations/deno/test/deps.js

@@ -1,3 +1,4 @@
 export * from 'https://deno.land/std@0.110.0/path/mod.ts';
 export * from 'https://deno.land/std@0.132.0/testing/asserts.ts';
 export * from 'https://deno.land/x/deno_dom/deno-dom-wasm.ts';
+export * from 'https://deno.land/std@0.142.0/streams/conversion.ts';

packages/integrations/deno/test/dynamic-import.test.js

@@ -0,0 +1,21 @@
+import { runBuildAndStartAppFromSubprocess } from './helpers.js';
+import { assertEquals, assert, DOMParser } from './deps.js';
+
+async function startApp(cb) {
+	await runBuildAndStartAppFromSubprocess('./fixtures/dynimport/', cb);
+}
+
+Deno.test({
+	name: 'Dynamic import',
+	async fn() {
+		await startApp(async () => {
+			const resp = await fetch('http://127.0.0.1:8085/');
+			assertEquals(resp.status, 200);
+			const html = await resp.text();
+			assert(html);
+			const doc = new DOMParser().parseFromString(html, `text/html`);
+			const div = doc.querySelector('#thing');
+			assert(div, 'div exists');
+		});
+	},
+});

packages/integrations/deno/test/fixtures/dynimport/astro.config.mjs

@@ -0,0 +1,9 @@
+import { defineConfig } from 'astro/config';
+import deno from '@astrojs/deno';
+
+export default defineConfig({
+	adapter: deno(),
+	experimental: {
+		ssr: true
+	}
+})

packages/integrations/deno/test/fixtures/dynimport/package.json

@@ -0,0 +1,9 @@
+{
+  "name": "@test/deno-astro-dynimport",
+  "version": "0.0.0",
+  "private": true,
+  "dependencies": {
+    "astro": "workspace:*",
+    "@astrojs/deno": "workspace:*"
+  }
+}

packages/integrations/deno/test/fixtures/dynimport/src/components/Thing.astro

@@ -0,0 +1,4 @@
+---
+
+---
+<div id="thing">testing</div>

packages/integrations/deno/test/fixtures/dynimport/src/pages/index.astro

@@ -0,0 +1,11 @@
+---
+const { default: Thing } = await import('../components/Thing.astro');
+---
+<html>
+	<head>
+		<title>testing</title>
+	</head>
+	<body>
+		<Thing />
+	</body>
+</html>

packages/integrations/deno/test/helpers.js

@@ -1,4 +1,4 @@
-import { fromFileUrl } from './deps.js';
+import { readableStreamFromReader, fromFileUrl } from './deps.js';
 const dir = new URL('./', import.meta.url);
 
 export async function runBuild(fixturePath) {
@@ -10,14 +10,52 @@ export async function runBuild(fixturePath) {
 	return async () => await proc.close();
 }
 
-export async function runBuildAndStartApp(fixturePath, cb) {
-	const url = new URL(fixturePath, dir);
-	const close = await runBuild(fixturePath);
-	const mod = await import(new URL('./dist/server/entry.mjs', url));
+export async function startModFromImport(baseUrl) {
+	const entryUrl = new URL('./dist/server/entry.mjs', baseUrl);
+	const mod = await import(entryUrl);
+
 	if (!mod.running()) {
 		mod.start();
 	}
+
+	return () => mod.stop();
+}
+
+export async function startModFromSubprocess(baseUrl) {
+	const entryUrl = new URL('./dist/server/entry.mjs', baseUrl);
+	let proc = Deno.run({
+		cmd: ['deno', 'run', '--allow-env', '--allow-net', fromFileUrl(entryUrl)],
+		cwd: fromFileUrl(baseUrl),
+		stderr: 'piped'
+	});
+	const stderr = readableStreamFromReader(proc.stderr);
+	const dec = new TextDecoder();
+	for await(let bytes of stderr) {
+		let msg = dec.decode(bytes);
+		if(msg.includes(`Server running`)) {
+			break;
+		}
+	}
+	return () => proc.close();
+}
+
+export async function runBuildAndStartApp(fixturePath, cb) {
+	const url = new URL(fixturePath, dir);
+	const close = await runBuild(fixturePath);
+	const stop = await startModFromImport(url);
+
+	await cb();
+	await stop();
+	await close();
+}
+
+
+export async function runBuildAndStartAppFromSubprocess(fixturePath, cb) {
+	const url = new URL(fixturePath, dir);
+	const close = await runBuild(fixturePath);
+	const stop = await startModFromSubprocess(url);
+
 	await cb();
-	await mod.stop();
+	await stop();
 	await close();
 }