fix: accept every Node.js version from 26 in adapter-vercel

.changeset/every-node-from-26-vercel.md

@@ -0,0 +1,5 @@
+---
+'@sveltejs/adapter-vercel': patch
+---
+
+fix: accept every Node.js version from 26 (`nodejs27.x`, `nodejs28.x`, ...), not only even ones

documentation/docs/25-build-and-deploy/90-adapter-vercel.md

@@ -46,7 +46,7 @@ export const config = {
 
 You can set the following options:
 
-- `runtime`: Even Node versions (for example `'nodejs22.x'`, `'nodejs24.x'`, `'nodejs26.x'`), `bun1.x` or `bun1.4.x`. By default, the adapter will select the runtime used for the build, which corresponds to the Node version your project is configured to use on the Vercel dashboard unless you [build the app with Bun](https://bun.com/docs/guides/ecosystem/vite)
+- `runtime`: Node versions (for example `'nodejs22.x'`, `'nodejs24.x'`, `'nodejs26.x'`), `bun1.x` or `bun1.4.x`. By default, the adapter will select the runtime used for the build, which corresponds to the Node version your project is configured to use on the Vercel dashboard unless you [build the app with Bun](https://bun.com/docs/guides/ecosystem/vite)
 - `regions`: an array of [edge network regions](https://vercel.com/docs/concepts/edge-network/regions) (defaulting to `["iad1"]`). Note that multiple regions for serverless functions are only supported on Enterprise plans
 - `split`: if `true`, causes a route to be deployed as an individual function. If `split` is set to `true` at the adapter level, all routes will be deployed as individual functions
 - `memory`: the amount of memory available to the function. Defaults to `1024` Mb, and can be decreased to `128` Mb or [increased](https://vercel.com/docs/concepts/limits/overview#serverless-function-memory) in 64Mb increments up to `3008` Mb on Pro or Enterprise accounts

packages/adapter-vercel/utils.js

@@ -110,7 +110,7 @@ function get_default_runtime() {
 
 		if (!valid_node_version_regex.test(version_key)) {
 			throw new Error(
-				`Unsupported Node.js version: ${process.version}. Please use an even Node version to build your project, or explicitly specify a runtime in your adapter configuration.`
+				`Unsupported Node.js version: ${process.version}. Please use an up-to-date Node version to build your project, or explicitly specify a runtime in your adapter configuration.`
 			);
 		}
 
@@ -123,7 +123,8 @@ function get_default_runtime() {
 }
 
 const valid_non_node_runtimes = /** @type {const} */ (['bun1.x', 'bun1.4.x']);
-const valid_node_version_regex = /^nodejs[2-9][02468]\.x$/;
+// Node 20, 22, 24, and every major from 26
+const valid_node_version_regex = /^nodejs(2[0246-9]|[3-9]\d)\.x$/;
 
 /**
  * @param {string} key
@@ -137,7 +138,7 @@ function assert_is_valid_runtime(key) {
 		!valid_node_version_regex.test(key)
 	) {
 		throw new Error(
-			`Unsupported runtime: ${key}. Supported runtimes are: ${valid_non_node_runtimes.join(', ')}, and even Node versions. See the Node.js Version section in your Vercel project settings for info on the currently supported versions.`
+			`Unsupported runtime: ${key}. Supported runtimes are: ${valid_non_node_runtimes.join(', ')}, and up-to-date Node versions. See the Node.js Version section in your Vercel project settings for info on the currently supported versions.`
 		);
 	}
 }

packages/adapter-vercel/utils.spec.js

@@ -110,19 +110,24 @@ describe('resolve_runtime', () => {
 		assert.equal(result, 'bun1.x');
 	});
 
-	test.each(['node18.x', 'nodejs028.x', 'nodejs18.x', 'nodejs33.x', 'nodejs100.x', 'nodejs2,.x'])(
-		'throws an error when resolving to an invalid runtime (%s)',
-		(runtime) => {
-			assert.throws(() => resolve_runtime(runtime), /Unsupported runtime/);
-		}
-	);
+	test.each([
+		'node18.x',
+		'nodejs028.x',
+		'nodejs18.x',
+		'nodejs23.x',
+		'nodejs25.x',
+		'nodejs100.x',
+		'nodejs2,.x'
+	])('throws an error when resolving to an invalid runtime (%s)', (runtime) => {
+		assert.throws(() => resolve_runtime(runtime), /Unsupported runtime/);
+	});
 
 	test('accepts a minor-pinned bun runtime', () => {
 		const result = resolve_runtime('bun1.4.x');
 		assert.equal(result, 'bun1.4.x');
 	});
 
-	test.each(['nodejs22.x', 'nodejs24.x', 'nodejs26.x', 'nodejs96.x', 'nodejs98.x'])(
+	test.each(['nodejs22.x', 'nodejs24.x', 'nodejs26.x', 'nodejs27.x', 'nodejs33.x', 'nodejs99.x'])(
 		'accepts %s',
 		(runtime) => {
 			assert.equal(resolve_runtime(runtime), runtime);
@@ -197,20 +202,24 @@ describe('resolve_runtime with node detected', () => {
 		['22.0.0', 'nodejs22.x'],
 		['24.1.0', 'nodejs24.x'],
 		['26.0.0', 'nodejs26.x'],
-		['96.1.0', 'nodejs96.x'],
-		['98.0.0', 'nodejs98.x']
+		['27.0.0', 'nodejs27.x'],
+		['29.1.0', 'nodejs29.x'],
+		['99.0.0', 'nodejs99.x']
 	])('detects Node %s', (version, runtime) => {
 		with_node(version, () => {
 			assert.equal(resolve_runtime(undefined, undefined), runtime);
 		});
 	});
 
-	test.each(['18.0.0', '27.0.0'])('throws for an unsupported Node major (%s)', (version) => {
-		with_node(version, () => {
-			assert.throws(
-				() => resolve_runtime(undefined, undefined),
-				/Unsupported Node\.js version.*Please use an even Node version to build your project/
-			);
-		});
-	});
+	test.each(['18.0.0', '23.0.0', '25.0.0'])(
+		'throws for an unsupported Node major (%s)',
+		(version) => {
+			with_node(version, () => {
+				assert.throws(
+					() => resolve_runtime(undefined, undefined),
+					/Unsupported Node\.js version.*Please use an up-to-date Node version to build your project/
+				);
+			});
+		}
+	);
 });