fix: copy _redirects when deploying edge functions

.changeset/legal-boxes-eat.md

@@ -0,0 +1,6 @@
+---
+"@sveltejs/adapter-netlify": patch
+---
+
+fix: copy `_redirects` when deploying edge function
+

packages/adapter-netlify/index.js

@@ -87,11 +87,18 @@ export default function ({ split = false, edge = edge_set_in_env_var } = {}) {
 			builder.writeClient(publish_dir);
 			builder.writePrerendered(publish_dir);
 
-			// Copy user's custom _headers file if it exists
+			// Copy user's _headers file if it exists
 			if (existsSync('_headers')) {
+				builder.log.minor('Copying user custom headers...');
 				builder.copy('_headers', join(publish, '_headers'));
 			}
 
+			// Copy user's _redirects file if it exists
+			if (existsSync('_redirects')) {
+				builder.log.minor('Copying user redirects...');
+				builder.copy('_redirects', join(publish, '_redirects'));
+			}
+
 			builder.log.minor('Writing Netlify config...');
 			write_frameworks_config({ builder });
 
@@ -102,7 +109,7 @@ export default function ({ split = false, edge = edge_set_in_env_var } = {}) {
 
 				await generate_edge_functions({ builder });
 			} else {
-				generate_serverless_functions(builder, publish, split);
+				generate_serverless_functions(builder, split);
 			}
 		},
 
@@ -115,20 +122,15 @@ export default function ({ split = false, edge = edge_set_in_env_var } = {}) {
 
 /**
  * @param {Builder} builder
- * @param {string} publish
  * @param {boolean} split
  */
-function generate_serverless_functions(builder, publish, split) {
+function generate_serverless_functions(builder, split) {
 	// https://docs.netlify.com/build/frameworks/frameworks-api/#netlifyv1functions
 	mkdirSync(netlify_framework_serverless_path, { recursive: true });
 
 	builder.writeServer('.netlify/v1/server');
 
-	const replace = {
-		'0SERVER': './server/index.js' // digit prefix prevents CJS build from using this as a variable name, which would also get replaced
-	};
-
-	builder.copy(files, '.netlify/v1', { replace, filter: (file) => !file.endsWith('edge.js') });
+	builder.copy(`${files}/serverless.js`, '.netlify/v1/serverless.js');
 
 	builder.log.minor('Generating serverless functions...');
 
@@ -210,13 +212,6 @@ function generate_serverless_functions(builder, publish, split) {
 			type: 'singular'
 		});
 	}
-
-	// Copy user's custom _redirects file if it exists
-	if (existsSync('_redirects')) {
-		builder.log.minor('Copying user redirects...');
-		const redirects_file = join(publish, '_redirects');
-		builder.copy('_redirects', redirects_file);
-	}
 }
 
 /**

packages/adapter-netlify/test/apps/edge/build.test.js

@@ -6,3 +6,11 @@ test('_headers are copied to publish directory', () => {
 	const headers = fs.readFileSync(path.resolve(import.meta.dirname, './build/_headers'), 'utf-8');
 	expect(headers).toContain('X-Custom-Header: test-value');
 });
+
+test('_redirects are copied to publish directory', () => {
+	const redirects = fs.readFileSync(
+		path.resolve(import.meta.dirname, './build/_redirects'),
+		'utf-8'
+	);
+	expect(redirects).toContain('/redirect-me /greeting/redirected 301');
+});