From 35e87625bae007a5f29bd97a3ea6c7d382bd9636 Mon Sep 17 00:00:00 2001
From: Philippe Serhal <philippe.serhal@gmail.com>
Date: Sat, 24 Jan 2026 20:20:57 -0500
Subject: [PATCH 1/9] refactor!: migrate to the modern Netlify Functions API

The Netlify adapter now generates "v2" Netlify Functions, which uses modern standards (ESM, Request,
Response) instead of the legacy "Lambda-compatible" or "v1" format. Under the hood, this greatly
simplifies the adapter code and improves maintainability. See more details in this guide:
https://developers.netlify.com/guides/migrating-to-the-modern-netlify-functions/.

Some key changes:
- The use of Request/Resonse eliminated the need for special header parsing, special multi-value
	handling header, base64 encoding of binary responses, and more.
- Configuration of function routing directly in code eliminated the need for `_redirects` file
	generation.
- As a bonus, this removes the limitation that users cannot specify redirects in `netlify.toml`.

BREAKING CHANGES:
- `platform.context` type changed to https://docs.netlify.com/build/functions/api/#netlify-specific-context-object
---
 .changeset/tender-kings-knock.md              | 17 +++++
 .../25-build-and-deploy/80-adapter-netlify.md |  9 +--
 packages/adapter-netlify/index.js             | 38 +++-------
 packages/adapter-netlify/package.json         |  4 +-
 packages/adapter-netlify/src/headers.js       | 31 ---------
 packages/adapter-netlify/src/headers.spec.js  | 51 --------------
 packages/adapter-netlify/src/serverless.js    | 69 ++-----------------
 .../apps/basic/netlify/functions/render.mjs   | 39 +----------
 pnpm-lock.yaml                                |  6 --
 9 files changed, 34 insertions(+), 230 deletions(-)
 create mode 100644 .changeset/tender-kings-knock.md
 delete mode 100644 packages/adapter-netlify/src/headers.js
 delete mode 100644 packages/adapter-netlify/src/headers.spec.js

diff --git a/.changeset/tender-kings-knock.md b/.changeset/tender-kings-knock.md
new file mode 100644
index 000000000000..839344ac91e8
--- /dev/null
+++ b/.changeset/tender-kings-knock.md
@@ -0,0 +1,17 @@
+---
+'@sveltejs/adapter-netlify': minor
+---
+
+chore!: Migrate to the modern Netlify Functions API
+
+The Netlify adapter now generates "v2" Netlify Functions, which uses modern standards (ESM, Request,
+Response) instead of the legacy "Lambda-compatible" or "v1" format. Under the hood, this greatly
+simplifies the adapter code and improves maintainability.
+
+For more details on features this unlocks for your SvelteKit app, see
+https://developers.netlify.com/guides/migrating-to-the-modern-netlify-functions/.
+
+BREAKING CHANGES:
+
+- `platform.context` is now the [modern Netlify Functions
+  context](https://docs.netlify.com/build/functions/api/#netlify-specific-context-object)
diff --git a/documentation/docs/25-build-and-deploy/80-adapter-netlify.md b/documentation/docs/25-build-and-deploy/80-adapter-netlify.md
index 78bdeaefa1fb..4e44a34ef100 100644
--- a/documentation/docs/25-build-and-deploy/80-adapter-netlify.md
+++ b/documentation/docs/25-build-and-deploy/80-adapter-netlify.md
@@ -76,14 +76,7 @@ You may build your app using functionality provided directly by SvelteKit withou
 
 ### `_headers` and `_redirects`
 
-The [`_headers`](https://docs.netlify.com/routing/headers/#syntax-for-the-headers-file) and [`_redirects`](https://docs.netlify.com/routing/redirects/redirect-options/) files specific to Netlify can be used for static asset responses (like images) by putting them into the project root folder.
-
-### Redirect rules
-
-During compilation, redirect rules are automatically appended to your `_redirects` file. (If it doesn't exist yet, it will be created.) That means:
-
-- `[[redirects]]` in `netlify.toml` will never match as `_redirects` has a [higher priority](https://docs.netlify.com/routing/redirects/#rule-processing-order). So always put your rules in the [`_redirects` file](https://docs.netlify.com/routing/redirects/#syntax-for-the-redirects-file).
-- `_redirects` shouldn't have any custom "catch all" rules such as `/* /foobar/:splat`. Otherwise the automatically appended rule will never be applied as Netlify is only processing [the first matching rule](https://docs.netlify.com/routing/redirects/#rule-processing-order).
+The [`_headers`](https://docs.netlify.com/routing/headers/#syntax-for-the-headers-file) and [`_redirects`](https://docs.netlify.com/routing/redirects/redirect-options/) files specific to Netlify can be used for static asset responses (like images) by putting them into the project root folder. You can also use [`[[redirects]]`](https://docs.netlify.com/routing/redirects/#syntax-for-the-netlify-configuration-file) in your `netlify.toml`.
 
 ### Netlify Forms
 
diff --git a/packages/adapter-netlify/index.js b/packages/adapter-netlify/index.js
index 955a323f5c21..eaa8b47c8702 100644
--- a/packages/adapter-netlify/index.js
+++ b/packages/adapter-netlify/index.js
@@ -1,6 +1,6 @@
 /** @import { BuildOptions } from 'esbuild' */
 import { appendFileSync, existsSync, readdirSync, readFileSync, writeFileSync } from 'node:fs';
-import { dirname, join, resolve, posix } from 'node:path';
+import { join, resolve, posix } from 'node:path';
 import { fileURLToPath } from 'node:url';
 import { builtinModules } from 'node:module';
 import process from 'node:process';
@@ -241,8 +241,6 @@ async function generate_edge_functions({ builder }) {
 function generate_lambda_functions({ builder, publish, split }) {
 	builder.mkdirp('.netlify/functions-internal/.svelte-kit');
 
-	/** @type {string[]} */
-	const redirects = [];
 	builder.writeServer('.netlify/server');
 
 	const replace = {
@@ -251,9 +249,6 @@ function generate_lambda_functions({ builder, publish, split }) {
 
 	builder.copy(files, '.netlify', { replace, filter: (name) => !name.endsWith('edge.js') });
 
-	// Configuring the function to use ESM as the output format.
-	const fn_config = JSON.stringify({ config: { nodeModuleFormat: 'esm' }, version: 1 });
-
 	builder.log.minor('Generating serverless functions...');
 
 	if (split) {
@@ -302,33 +297,27 @@ function generate_lambda_functions({ builder, publish, split }) {
 				routes
 			});
 
-			const fn = `import { init } from '../serverless.js';\n\nexport const handler = init(${manifest});\n`;
+			const fn = `import { init } from '../serverless.js';\n\nexport default init(${manifest});\n\nexport const config = {\n\tpath: "${pattern}",\n\tpreferStatic: true\n};\n`;
 
 			writeFileSync(`.netlify/functions-internal/${name}.mjs`, fn);
-			writeFileSync(`.netlify/functions-internal/${name}.json`, fn_config);
 			if (builder.hasServerInstrumentationFile?.()) {
 				builder.instrument?.({
 					entrypoint: `.netlify/functions-internal/${name}.mjs`,
 					instrumentation: '.netlify/server/instrumentation.server.js',
 					start: `.netlify/functions-start/${name}.start.mjs`,
 					module: {
-						exports: ['handler']
+						exports: ['default']
 					}
 				});
 			}
-
-			const redirect = `/.netlify/functions/${name} 200`;
-			redirects.push(`${pattern} ${redirect}`);
-			redirects.push(`${pattern === '/' ? '' : pattern}/__data.json ${redirect}`);
 		}
 	} else {
 		const manifest = builder.generateManifest({
 			relativePath: '../server'
 		});
 
-		const fn = `import { init } from '../serverless.js';\n\nexport const handler = init(${manifest});\n`;
+		const fn = `import { init } from '../serverless.js';\n\nexport default init(${manifest});\n\nexport const config = {\n\tpath: "/*",\n\tpreferStatic: true\n};\n`;
 
-		writeFileSync(`.netlify/functions-internal/${FUNCTION_PREFIX}render.json`, fn_config);
 		writeFileSync(`.netlify/functions-internal/${FUNCTION_PREFIX}render.mjs`, fn);
 		if (builder.hasServerInstrumentationFile?.()) {
 			builder.instrument?.({
@@ -336,24 +325,18 @@ function generate_lambda_functions({ builder, publish, split }) {
 				instrumentation: '.netlify/server/instrumentation.server.js',
 				start: `.netlify/functions-start/${FUNCTION_PREFIX}render.start.mjs`,
 				module: {
-					exports: ['handler']
+					exports: ['default']
 				}
 			});
 		}
-
-		redirects.push(`* /.netlify/functions/${FUNCTION_PREFIX}render 200`);
 	}
 
-	// this should happen at the end, after builder.writeClient(...),
-	// so that generated redirects are appended to custom redirects
-	// rather than replaced by them
-	builder.log.minor('Writing redirects...');
-	const redirects_file = join(publish, '_redirects');
+	// 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);
 	}
-	builder.mkdirp(dirname(redirects_file));
-	appendFileSync(redirects_file, `\n\n${redirects.join('\n')}`);
 }
 
 function get_netlify_config() {
@@ -378,11 +361,6 @@ function get_publish_directory(netlify_config, builder) {
 			return;
 		}
 
-		if (netlify_config.redirects) {
-			throw new Error(
-				"Redirects are not supported in netlify.toml. Use _redirects instead. For more details consult the readme's troubleshooting section."
-			);
-		}
 		if (resolve(netlify_config.build.publish) === process.cwd()) {
 			throw new Error(
 				'The publish directory cannot be set to the site root. Please change it to another value such as "build" in netlify.toml.'
diff --git a/packages/adapter-netlify/package.json b/packages/adapter-netlify/package.json
index 628ebf689fcb..ca8f37e36ede 100644
--- a/packages/adapter-netlify/package.json
+++ b/packages/adapter-netlify/package.json
@@ -44,8 +44,7 @@
 	},
 	"dependencies": {
 		"@iarna/toml": "^2.2.5",
-		"esbuild": "^0.25.4",
-		"set-cookie-parser": "^2.6.0"
+		"esbuild": "^0.25.4"
 	},
 	"devDependencies": {
 		"@netlify/dev": "catalog:",
@@ -59,7 +58,6 @@
 		"@sveltejs/kit": "workspace:^",
 		"@sveltejs/vite-plugin-svelte": "catalog:",
 		"@types/node": "catalog:",
-		"@types/set-cookie-parser": "catalog:",
 		"rollup": "^4.14.2",
 		"typescript": "^5.3.3",
 		"vitest": "catalog:"
diff --git a/packages/adapter-netlify/src/headers.js b/packages/adapter-netlify/src/headers.js
deleted file mode 100644
index 8fee7ddb38eb..000000000000
--- a/packages/adapter-netlify/src/headers.js
+++ /dev/null
@@ -1,31 +0,0 @@
-import * as set_cookie_parser from 'set-cookie-parser';
-
-/**
- * Splits headers into two categories: single value and multi value
- * @param {Headers} headers
- * @returns {{
- *   headers: Record<string, string>,
- *   multiValueHeaders: Record<string, string[]>
- * }}
- */
-export function split_headers(headers) {
-	/** @type {Record<string, string>} */
-	const h = {};
-
-	/** @type {Record<string, string[]>} */
-	const m = {};
-
-	headers.forEach((value, key) => {
-		if (key === 'set-cookie') {
-			if (!m[key]) m[key] = [];
-			m[key].push(...set_cookie_parser.splitCookiesString(value));
-		} else {
-			h[key] = value;
-		}
-	});
-
-	return {
-		headers: h,
-		multiValueHeaders: m
-	};
-}
diff --git a/packages/adapter-netlify/src/headers.spec.js b/packages/adapter-netlify/src/headers.spec.js
deleted file mode 100644
index 352987f3bdc5..000000000000
--- a/packages/adapter-netlify/src/headers.spec.js
+++ /dev/null
@@ -1,51 +0,0 @@
-import { expect, test } from 'vitest';
-import './shims.js';
-import { split_headers } from './headers.js';
-
-test('empty headers', () => {
-	const headers = new Headers();
-
-	const result = split_headers(headers);
-
-	expect(result).toEqual({
-		headers: {},
-		multiValueHeaders: {}
-	});
-});
-
-test('single-value headers', () => {
-	const headers = new Headers();
-	headers.append('Location', '/apple');
-	headers.append('Content-Type', 'application/json');
-
-	const result = split_headers(headers);
-
-	expect(result).toEqual({
-		headers: {
-			// Note: becomes lowercase even if specified as uppercase
-			location: '/apple',
-			'content-type': 'application/json'
-		},
-		multiValueHeaders: {}
-	});
-});
-
-test('multi-value headers', () => {
-	// https://httpwg.org/specs/rfc7231.html#http.date
-	const wednesday = 'Wed, 23 Feb 2022 21:01:48 GMT';
-	const thursday = 'Thu, 24 Feb 2022 21:01:48 GMT';
-
-	const headers = new Headers();
-	headers.append('Set-Cookie', `flavor=sugar; Expires=${wednesday}`);
-	headers.append('Set-Cookie', `diameter=6cm; Expires=${thursday}`);
-
-	const result = split_headers(headers);
-
-	// it splits at actual cookie boundaries, not the commas in the dates
-	expect(result).toEqual({
-		headers: {},
-		multiValueHeaders: {
-			'set-cookie': [`flavor=sugar; Expires=${wednesday}`, `diameter=6cm; Expires=${thursday}`]
-		}
-	});
-});
diff --git a/packages/adapter-netlify/src/serverless.js b/packages/adapter-netlify/src/serverless.js
index 132de92b3295..c8a6447b6ad9 100644
--- a/packages/adapter-netlify/src/serverless.js
+++ b/packages/adapter-netlify/src/serverless.js
@@ -1,12 +1,11 @@
 import './shims';
 import { Server } from '0SERVER';
-import { split_headers } from './headers.js';
 import { createReadableStream } from '@sveltejs/kit/node';
 import process from 'node:process';
 
 /**
  * @param {import('@sveltejs/kit').SSRManifest} manifest
- * @returns {import('@netlify/functions').Handler}
+ * @returns {(request: Request, context: import('@netlify/functions').Context) => Promise<Response>}
  */
 export function init(manifest) {
 	const server = new Server(manifest);
@@ -17,77 +16,17 @@ export function init(manifest) {
 		read: (file) => createReadableStream(`.netlify/server/${file}`)
 	});
 
-	return async (event, context) => {
+	return async (request, context) => {
 		if (init_promise !== null) {
 			await init_promise;
 			init_promise = null;
 		}
 
-		const response = await server.respond(to_request(event), {
+		return server.respond(request, {
 			platform: { context },
 			getClientAddress() {
-				return /** @type {string} */ (event.headers['x-nf-client-connection-ip']);
+				return context.ip;
 			}
 		});
-
-		const partial_response = {
-			statusCode: response.status,
-			...split_headers(response.headers)
-		};
-
-		if (!is_text(response.headers.get('content-type'))) {
-			// Function responses should be strings (or undefined), and responses with binary
-			// content should be base64 encoded and set isBase64Encoded to true.
-			// https://github.com/netlify/functions/blob/main/src/function/response.ts
-			return {
-				...partial_response,
-				isBase64Encoded: true,
-				body: Buffer.from(await response.arrayBuffer()).toString('base64')
-			};
-		}
-
-		return {
-			...partial_response,
-			body: await response.text()
-		};
-	};
-}
-
-/**
- * @param {import('@netlify/functions').HandlerEvent} event
- * @returns {Request}
- */
-function to_request({ httpMethod, headers, rawUrl, body, isBase64Encoded }) {
-	/** @type {RequestInit} */
-	const init = {
-		method: httpMethod,
-		headers: new Headers(/** @type {Record<string, string>} */ (headers))
 	};
-
-	if (httpMethod !== 'GET' && httpMethod !== 'HEAD') {
-		const encoding = isBase64Encoded ? 'base64' : 'utf-8';
-		init.body = typeof body === 'string' ? Buffer.from(body, encoding) : body;
-	}
-
-	return new Request(rawUrl, init);
-}
-
-const text_types = new Set([
-	'application/xml',
-	'application/json',
-	'application/x-www-form-urlencoded',
-	'multipart/form-data'
-]);
-
-/**
- * Decides how the body should be parsed based on its mime type
- *
- * @param {string | undefined | null} content_type The `content-type` header of a request/response.
- * @returns {boolean}
- */
-function is_text(content_type) {
-	if (!content_type) return true; // defaults to json
-	const type = content_type.split(';')[0].toLowerCase(); // get the mime type
-
-	return type.startsWith('text/') || type.endsWith('+xml') || text_types.has(type);
 }
diff --git a/packages/adapter-netlify/test/apps/basic/netlify/functions/render.mjs b/packages/adapter-netlify/test/apps/basic/netlify/functions/render.mjs
index 343db73977d2..9444ce6e2bf6 100644
--- a/packages/adapter-netlify/test/apps/basic/netlify/functions/render.mjs
+++ b/packages/adapter-netlify/test/apps/basic/netlify/functions/render.mjs
@@ -1,39 +1,6 @@
-// This is a temporary workaround to be compatible with Netlify's new dev server
-// TODO: remove this once we overhaul the Netlify adapter to use Netlify's new serverless function format https://docs.netlify.com/build/functions/get-started/?data-tab=TypeScript#write-a-function
-
-import { handler } from '../../.netlify/functions-internal/sveltekit-render.mjs';
-
-/**
- * @param {Request} request
- * @param {import('@netlify/functions').HandlerContext} context
- */
-export default async function (request, context) {
-	const [rawUrl, rawQuery] = request.url.split('?');
-	/** @type {import('@netlify/functions').HandlerEvent} */
-	const event = {
-		rawUrl,
-		rawQuery: rawQuery || '',
-		headers: Object.fromEntries(request.headers),
-		httpMethod: request.method,
-		isBase64Encoded: false,
-		path: new URL(request.url).pathname,
-		queryStringParameters: Object.fromEntries(new URL(request.url).searchParams),
-		body: request.body && (await request.text()),
-		multiValueHeaders: {},
-		multiValueQueryStringParameters: null
-	};
-	const result = await handler(event, context);
-	if (result) {
-		return new Response(result.body, {
-			status: result.statusCode,
-			// @ts-ignore
-			headers: result.headers
-		});
-	}
-
-	return new Response('Not Found', { status: 404 });
-}
+export { default } from '../../.netlify/functions-internal/sveltekit-render.mjs';
 
 export const config = {
-	path: '/*'
+	path: '/*',
+	preferStatic: true
 };
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index efa6d0e858f5..1a3a9b5e4945 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -243,9 +243,6 @@ importers:
       esbuild:
         specifier: ^0.25.4
         version: 0.25.9
-      set-cookie-parser:
-        specifier: ^2.6.0
-        version: 2.6.0
     devDependencies:
       '@netlify/dev':
         specifier: 'catalog:'
@@ -280,9 +277,6 @@ importers:
       '@types/node':
         specifier: 'catalog:'
         version: 18.19.119
-      '@types/set-cookie-parser':
-        specifier: 'catalog:'
-        version: 2.4.7
       rollup:
         specifier: ^4.14.2
         version: 4.50.1

From 0d1439981fb66f9cb67956aa2b68897db5b9f5a8 Mon Sep 17 00:00:00 2001
From: Tee Ming <chewteeming01@gmail.com>
Date: Sun, 25 Jan 2026 21:17:55 +0800
Subject: [PATCH 2/9] there are no unit tests anymore

---
 packages/adapter-netlify/package.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/adapter-netlify/package.json b/packages/adapter-netlify/package.json
index ca8f37e36ede..d4b58c266ce9 100644
--- a/packages/adapter-netlify/package.json
+++ b/packages/adapter-netlify/package.json
@@ -37,7 +37,7 @@
 		"check": "tsc",
 		"lint": "prettier --check .",
 		"format": "pnpm lint --write",
-		"test": "pnpm test:unit && pnpm test:integration",
+		"test": "pnpm test:integration",
 		"test:unit": "vitest run",
 		"test:integration": "pnpm build && pnpm -r --workspace-concurrency 1 --filter=\"./test/**\" test",
 		"prepublishOnly": "pnpm build"

From 324129ff4a33c355f0025f6dcf58696c523f8804 Mon Sep 17 00:00:00 2001
From: Philippe Serhal <philippe.serhal@gmail.com>
Date: Sun, 25 Jan 2026 11:18:04 -0500
Subject: [PATCH 3/9] chore: better changesets

---
 .changeset/petite-cars-dress.md  | 11 +++++++++++
 .changeset/tender-kings-knock.md |  7 +------
 .changeset/weak-dryers-bow.md    |  8 ++++++++
 3 files changed, 20 insertions(+), 6 deletions(-)
 create mode 100644 .changeset/petite-cars-dress.md
 create mode 100644 .changeset/weak-dryers-bow.md

diff --git a/.changeset/petite-cars-dress.md b/.changeset/petite-cars-dress.md
new file mode 100644
index 000000000000..994e481ed3cc
--- /dev/null
+++ b/.changeset/petite-cars-dress.md
@@ -0,0 +1,11 @@
+---
+'@sveltejs/adapter-netlify': major
+---
+
+breaking: `platform.context` is now the [modern Netlify Functions
+context](https://docs.netlify.com/build/functions/api/#netlify-specific-context-object)
+
+Previously, this was the [AWS Lambda-style
+context](https://github.com/netlify/primitives/blob/c1ae30f2745f0a73e26e83334695e205a04ab47d/packages/functions/prod/src/function/handler_context.ts).
+
+If you were using this in your app (unlikely), you will need to update your code to read from new fields.
diff --git a/.changeset/tender-kings-knock.md b/.changeset/tender-kings-knock.md
index 839344ac91e8..9afd0d6a4f7c 100644
--- a/.changeset/tender-kings-knock.md
+++ b/.changeset/tender-kings-knock.md
@@ -2,7 +2,7 @@
 '@sveltejs/adapter-netlify': minor
 ---
 
-chore!: Migrate to the modern Netlify Functions API
+feat: Migrate to the modern Netlify Functions API
 
 The Netlify adapter now generates "v2" Netlify Functions, which uses modern standards (ESM, Request,
 Response) instead of the legacy "Lambda-compatible" or "v1" format. Under the hood, this greatly
@@ -10,8 +10,3 @@ simplifies the adapter code and improves maintainability.
 
 For more details on features this unlocks for your SvelteKit app, see
 https://developers.netlify.com/guides/migrating-to-the-modern-netlify-functions/.
-
-BREAKING CHANGES:
-
-- `platform.context` is now the [modern Netlify Functions
-  context](https://docs.netlify.com/build/functions/api/#netlify-specific-context-object)
diff --git a/.changeset/weak-dryers-bow.md b/.changeset/weak-dryers-bow.md
new file mode 100644
index 000000000000..a4466b508176
--- /dev/null
+++ b/.changeset/weak-dryers-bow.md
@@ -0,0 +1,8 @@
+---
+'@sveltejs/adapter-netlify': minor
+---
+
+feat: allow configuring redirects in `netlify.toml`
+
+The limitation of only being able to configure redirects via the
+`_redirects` file has been removed.

From 312d3bf07cc5429535562e7bade29a9454cfd3f1 Mon Sep 17 00:00:00 2001
From: Philippe Serhal <philippe.serhal@gmail.com>
Date: Sun, 25 Jan 2026 11:20:20 -0500
Subject: [PATCH 4/9] fix: exclude special .netlify/ path from generated
 function

---
 packages/adapter-netlify/index.js                             | 4 ++--
 .../test/apps/basic/netlify/functions/render.mjs              | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/packages/adapter-netlify/index.js b/packages/adapter-netlify/index.js
index eaa8b47c8702..18672f182e9d 100644
--- a/packages/adapter-netlify/index.js
+++ b/packages/adapter-netlify/index.js
@@ -297,7 +297,7 @@ function generate_lambda_functions({ builder, publish, split }) {
 				routes
 			});
 
-			const fn = `import { init } from '../serverless.js';\n\nexport default init(${manifest});\n\nexport const config = {\n\tpath: "${pattern}",\n\tpreferStatic: true\n};\n`;
+			const fn = `import { init } from '../serverless.js';\n\nexport default init(${manifest});\n\nexport const config = {\n\tpath: "${pattern}",\n\texcludedPath: "/.netlify/*",\n\tpreferStatic: true\n};\n`;
 
 			writeFileSync(`.netlify/functions-internal/${name}.mjs`, fn);
 			if (builder.hasServerInstrumentationFile?.()) {
@@ -316,7 +316,7 @@ function generate_lambda_functions({ builder, publish, split }) {
 			relativePath: '../server'
 		});
 
-		const fn = `import { init } from '../serverless.js';\n\nexport default init(${manifest});\n\nexport const config = {\n\tpath: "/*",\n\tpreferStatic: true\n};\n`;
+		const fn = `import { init } from '../serverless.js';\n\nexport default init(${manifest});\n\nexport const config = {\n\tpath: "/*",\n\texcludedPath: "/.netlify/*",\n\tpreferStatic: true\n};\n`;
 
 		writeFileSync(`.netlify/functions-internal/${FUNCTION_PREFIX}render.mjs`, fn);
 		if (builder.hasServerInstrumentationFile?.()) {
diff --git a/packages/adapter-netlify/test/apps/basic/netlify/functions/render.mjs b/packages/adapter-netlify/test/apps/basic/netlify/functions/render.mjs
index 9444ce6e2bf6..ae9928a35911 100644
--- a/packages/adapter-netlify/test/apps/basic/netlify/functions/render.mjs
+++ b/packages/adapter-netlify/test/apps/basic/netlify/functions/render.mjs
@@ -2,5 +2,6 @@ export { default } from '../../.netlify/functions-internal/sveltekit-render.mjs'
 
 export const config = {
 	path: '/*',
+	excludedPath: '/.netlify/*',
 	preferStatic: true
 };

From 3f8178099cb247914cc2dd069153f62092315852 Mon Sep 17 00:00:00 2001
From: Tee Ming <chewteeming01@gmail.com>
Date: Fri, 6 Feb 2026 02:39:30 +0800
Subject: [PATCH 5/9] Apply suggestion from @benmccann

Co-authored-by: Ben McCann <322311+benmccann@users.noreply.github.com>
---
 .changeset/weak-dryers-bow.md | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/.changeset/weak-dryers-bow.md b/.changeset/weak-dryers-bow.md
index a4466b508176..dcad45b23f27 100644
--- a/.changeset/weak-dryers-bow.md
+++ b/.changeset/weak-dryers-bow.md
@@ -4,5 +4,4 @@
 
 feat: allow configuring redirects in `netlify.toml`
 
-The limitation of only being able to configure redirects via the
-`_redirects` file has been removed.
+The limitation of only being able to configure redirects via the `_redirects` file has been removed.

From 600efd11afebe695df7197e2b2abeba1d385ca8e Mon Sep 17 00:00:00 2001
From: Tee Ming <chewteeming01@gmail.com>
Date: Fri, 6 Feb 2026 02:39:45 +0800
Subject: [PATCH 6/9] Apply suggestion from @benmccann

Co-authored-by: Ben McCann <322311+benmccann@users.noreply.github.com>
---
 .changeset/tender-kings-knock.md | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/.changeset/tender-kings-knock.md b/.changeset/tender-kings-knock.md
index 9afd0d6a4f7c..21e428afdd30 100644
--- a/.changeset/tender-kings-knock.md
+++ b/.changeset/tender-kings-knock.md
@@ -4,9 +4,7 @@
 
 feat: Migrate to the modern Netlify Functions API
 
-The Netlify adapter now generates "v2" Netlify Functions, which uses modern standards (ESM, Request,
-Response) instead of the legacy "Lambda-compatible" or "v1" format. Under the hood, this greatly
-simplifies the adapter code and improves maintainability.
+The Netlify adapter now generates "v2" Netlify Functions, which uses modern standards (ESM, `Request`, `Response`) instead of the legacy "Lambda-compatible" or "v1" format. Under the hood, this greatly simplifies the adapter code and improves maintainability.
 
 For more details on features this unlocks for your SvelteKit app, see
 https://developers.netlify.com/guides/migrating-to-the-modern-netlify-functions/.

From 4d06096706083923acadee518070b424729c29ca Mon Sep 17 00:00:00 2001
From: Tee Ming <chewteeming01@gmail.com>
Date: Fri, 6 Feb 2026 02:54:08 +0800
Subject: [PATCH 7/9] add ambient types

---
 .changeset/great-parents-share.md     | 5 +++++
 packages/adapter-netlify/ambient.d.ts | 9 +++++++++
 packages/adapter-netlify/index.d.ts   | 1 +
 packages/adapter-netlify/package.json | 3 ++-
 4 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/great-parents-share.md
 create mode 100644 packages/adapter-netlify/ambient.d.ts

diff --git a/.changeset/great-parents-share.md b/.changeset/great-parents-share.md
new file mode 100644
index 000000000000..0b196723c26c
--- /dev/null
+++ b/.changeset/great-parents-share.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/adapter-netlify': patch
+---
+
+fix: populate `App.Platform` with `context` property
diff --git a/packages/adapter-netlify/ambient.d.ts b/packages/adapter-netlify/ambient.d.ts
new file mode 100644
index 000000000000..a776cd3568f3
--- /dev/null
+++ b/packages/adapter-netlify/ambient.d.ts
@@ -0,0 +1,9 @@
+declare global {
+	namespace App {
+		export interface Platform {
+			context: import('@netlify/functions').Context;
+		}
+	}
+}
+
+export {};
diff --git a/packages/adapter-netlify/index.d.ts b/packages/adapter-netlify/index.d.ts
index 6bdc8db882dc..580b30cb1060 100644
--- a/packages/adapter-netlify/index.d.ts
+++ b/packages/adapter-netlify/index.d.ts
@@ -1,3 +1,4 @@
 import { Adapter } from '@sveltejs/kit';
+import './ambient.d.ts';
 
 export default function plugin(opts?: { split?: boolean; edge?: boolean }): Adapter;
diff --git a/packages/adapter-netlify/package.json b/packages/adapter-netlify/package.json
index d4b58c266ce9..953aef668c7a 100644
--- a/packages/adapter-netlify/package.json
+++ b/packages/adapter-netlify/package.json
@@ -29,7 +29,8 @@
 	"files": [
 		"files",
 		"index.js",
-		"index.d.ts"
+		"index.d.ts",
+		"ambient.d.ts"
 	],
 	"scripts": {
 		"dev": "rollup -cw",

From ed8bc9d70f417c20834dbf55318943cc60c66032 Mon Sep 17 00:00:00 2001
From: Tee Ming <chewteeming01@gmail.com>
Date: Fri, 6 Feb 2026 03:03:30 +0800
Subject: [PATCH 8/9] bump peer version of kit

---
 packages/adapter-netlify/index.js     | 33 ++++-----------------------
 packages/adapter-netlify/package.json |  2 +-
 2 files changed, 6 insertions(+), 29 deletions(-)

diff --git a/packages/adapter-netlify/index.js b/packages/adapter-netlify/index.js
index 18672f182e9d..2f51e130c860 100644
--- a/packages/adapter-netlify/index.js
+++ b/packages/adapter-netlify/index.js
@@ -6,9 +6,6 @@ import { builtinModules } from 'node:module';
 import process from 'node:process';
 import esbuild from 'esbuild';
 import toml from '@iarna/toml';
-import { VERSION } from '@sveltejs/kit';
-
-const [kit_major, kit_minor] = VERSION.split('.');
 
 /**
  * @typedef {{
@@ -17,17 +14,6 @@ const [kit_major, kit_minor] = VERSION.split('.');
  * } & toml.JsonMap} NetlifyConfig
  */
 
-/**
- * @template T
- * @template {keyof T} K
- * @typedef {Partial<Omit<T, K>> & Required<Pick<T, K>>} PartialExcept
- */
-
-/**
- * We use a custom `Builder` type here to support the minimum version of SvelteKit.
- * @typedef {PartialExcept<import('@sveltejs/kit').Builder, 'log' | 'rimraf' | 'mkdirp' | 'config' | 'prerendered' | 'routes' | 'createEntries' | 'findServerAssets' | 'generateFallback' | 'generateEnvModule' | 'generateManifest' | 'getBuildDirectory' | 'getClientDirectory' | 'getServerDirectory' | 'getAppPath' | 'writeClient' | 'writePrerendered' | 'writePrerendered' | 'writeServer' | 'copy' | 'compress'>} Builder2_4_0
- */
-
 const name = '@sveltejs/adapter-netlify';
 const files = fileURLToPath(new URL('./files', import.meta.url).href);
 
@@ -41,7 +27,7 @@ const FUNCTION_PREFIX = 'sveltekit-';
 export default function ({ split = false, edge = edge_set_in_env_var } = {}) {
 	return {
 		name,
-		/** @param {Builder2_4_0} builder */
+		/** @param {import('@sveltejs/kit').Builder} builder */
 		async adapt(builder) {
 			if (!builder.routes) {
 				throw new Error(
@@ -109,23 +95,14 @@ export default function ({ split = false, edge = edge_set_in_env_var } = {}) {
 		},
 
 		supports: {
-			read: ({ route }) => {
-				// TODO bump peer dep in next adapter major to simplify this
-				if (edge && kit_major === '2' && kit_minor < '25') {
-					throw new Error(
-						`${name}: Cannot use \`read\` from \`$app/server\` in route \`${route.id}\` when using edge functions and SvelteKit < 2.25.0`
-					);
-				}
-
-				return true;
-			},
+			read: () => true,
 			instrumentation: () => true
 		}
 	};
 }
 /**
  * @param { object } params
- * @param {Builder2_4_0} params.builder
+ * @param {import('@sveltejs/kit').Builder} params.builder
  */
 async function generate_edge_functions({ builder }) {
 	const tmp = builder.getBuildDirectory('netlify-tmp');
@@ -234,7 +211,7 @@ async function generate_edge_functions({ builder }) {
 }
 /**
  * @param { object } params
- * @param {Builder2_4_0} params.builder
+ * @param {import('@sveltejs/kit').Builder} params.builder
  * @param { string } params.publish
  * @param { boolean } params.split
  */
@@ -352,7 +329,7 @@ function get_netlify_config() {
 
 /**
  * @param {NetlifyConfig | null} netlify_config
- * @param {Builder2_4_0} builder
+ * @param {import('@sveltejs/kit').Builder} builder
  **/
 function get_publish_directory(netlify_config, builder) {
 	if (netlify_config) {
diff --git a/packages/adapter-netlify/package.json b/packages/adapter-netlify/package.json
index 953aef668c7a..078b97c1f6fe 100644
--- a/packages/adapter-netlify/package.json
+++ b/packages/adapter-netlify/package.json
@@ -64,6 +64,6 @@
 		"vitest": "catalog:"
 	},
 	"peerDependencies": {
-		"@sveltejs/kit": "^2.4.0"
+		"@sveltejs/kit": "^2.31.0"
 	}
 }

From 01184a9c6260c3bc6a403006cf059a2663f79c2f Mon Sep 17 00:00:00 2001
From: Tee Ming <chewteeming01@gmail.com>
Date: Fri, 6 Feb 2026 03:03:40 +0800
Subject: [PATCH 9/9] chores

---
 packages/adapter-netlify/test/apps/basic/netlify.toml   | 2 +-
 packages/adapter-netlify/test/apps/basic/vite.config.ts | 4 ++--
 packages/adapter-netlify/test/apps/edge/netlify.toml    | 3 +--
 packages/adapter-netlify/test/apps/edge/vite.config.ts  | 4 ++--
 4 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/packages/adapter-netlify/test/apps/basic/netlify.toml b/packages/adapter-netlify/test/apps/basic/netlify.toml
index 75cbe2e5f61e..0183026741cd 100644
--- a/packages/adapter-netlify/test/apps/basic/netlify.toml
+++ b/packages/adapter-netlify/test/apps/basic/netlify.toml
@@ -1,2 +1,2 @@
-[dev]
+[build]
 publish = "build"
diff --git a/packages/adapter-netlify/test/apps/basic/vite.config.ts b/packages/adapter-netlify/test/apps/basic/vite.config.ts
index 29ad08debe6a..72a307cc0e56 100644
--- a/packages/adapter-netlify/test/apps/basic/vite.config.ts
+++ b/packages/adapter-netlify/test/apps/basic/vite.config.ts
@@ -1,7 +1,7 @@
 import { sveltekit } from '@sveltejs/kit/vite';
+import type { UserConfig } from 'vite';
 
-/** @type {import('vite').UserConfig} */
-const config = {
+const config: UserConfig = {
 	build: {
 		minify: false
 	},
diff --git a/packages/adapter-netlify/test/apps/edge/netlify.toml b/packages/adapter-netlify/test/apps/edge/netlify.toml
index 0d9af7524b9d..fba5510330d6 100644
--- a/packages/adapter-netlify/test/apps/edge/netlify.toml
+++ b/packages/adapter-netlify/test/apps/edge/netlify.toml
@@ -1,9 +1,8 @@
-[dev]
+[build]
 publish = "build"
 
 # TODO: remove these once we overhaul the Netlify adapter to use the new edge declarations https://docs.netlify.com/build/edge-functions/declarations/#declare-edge-functions-inline
 
-[build]
 # defaults to "netlify/edge-functions" (without the . prefix)
 edge_functions = ".netlify/edge-functions"
 
diff --git a/packages/adapter-netlify/test/apps/edge/vite.config.ts b/packages/adapter-netlify/test/apps/edge/vite.config.ts
index 29ad08debe6a..72a307cc0e56 100644
--- a/packages/adapter-netlify/test/apps/edge/vite.config.ts
+++ b/packages/adapter-netlify/test/apps/edge/vite.config.ts
@@ -1,7 +1,7 @@
 import { sveltekit } from '@sveltejs/kit/vite';
+import type { UserConfig } from 'vite';
 
-/** @type {import('vite').UserConfig} */
-const config = {
+const config: UserConfig = {
 	build: {
 		minify: false
 	},