fix: only add handlers for directories that exist

sveltejs · Dec 30, 2021 · 0407093 · 0407093
1 parent a1e980f
commit 0407093
Showing 1 changed file with 25 additions and 23 deletions.
diff --git a/packages/adapter-node/src/handler.js b/packages/adapter-node/src/handler.js
@@ -1,3 +1,4 @@
+import fs from 'fs';
 import path from 'path';
 import sirv from 'sirv';
 import { fileURLToPath } from 'url';
@@ -14,28 +15,22 @@ const app = new App(manifest);
 
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
 
-const serve_client = sirv(path.join(__dirname, '/client'), {
-	etag: true,
-	maxAge: 31536000,
-	immutable: true,
-	gzip: true,
-	brotli: true
-});
-
-const serve_static = sirv(path.join(__dirname, '/static'), {
-	etag: true,
-	maxAge: 31536000,
-	immutable: true,
-	gzip: true,
-	brotli: true
-});
-
-const serve_prerendered = sirv(path.join(__dirname, '/prerendered'), {
-	etag: true,
-	maxAge: 0,
-	gzip: true,
-	brotli: true
-});
+/**
+ * @param {string} path
+ * @param {number} max_age
+ */
+function serve(path, max_age) {
+	return (
+		fs.existsSync(path) &&
+		sirv(path, {
+			etag: true,
+			maxAge: max_age,
+			immutable: true,
+			gzip: true,
+			brotli: true
+		})
+	);
+}
 
 /** @type {import('polka').Middleware} */
 const ssr = async (req, res) => {
@@ -83,4 +78,11 @@ function sequence(handlers) {
 	};
 }
 
-export const handler = sequence([serve_client, serve_static, serve_prerendered, ssr]);
+export const handler = sequence(
+	[
+		serve(path.join(__dirname, '/client'), 31536000),
+		serve(path.join(__dirname, '/static'), 31536000),
+		serve(path.join(__dirname, '/prerendered'), 0),
+		ssr
+	].filter(Boolean)
+);