From a97a79f11ed68e037c8943cbe1e68f024cc998bc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Szymon=20R=C4=85czka?= <04_barista_pads@icloud.com>
Date: Sun, 28 Dec 2025 12:47:09 +0100
Subject: [PATCH] fix(sveltekit): make adapter runtime-agnostic

Remove process.env default to support all SvelteKit runtimes
(Node, Cloudflare Workers, Vercel Edge, Deno). Users now pass
env explicitly via $env/dynamic/private.
---
 .../sveltekit/sveltekit.adapter.spec.ts       |  4 +--
 .../adapter/sveltekit/sveltekit.adapter.ts    | 26 +++++++++++++------
 examples/sveltekit/src/hooks.server.ts        |  3 ++-
 examples/sveltekit/src/routes/+page.server.ts |  3 ++-
 4 files changed, 24 insertions(+), 12 deletions(-)

diff --git a/app/src/adapter/sveltekit/sveltekit.adapter.spec.ts b/app/src/adapter/sveltekit/sveltekit.adapter.spec.ts
index 002cf27..17da756 100644
--- a/app/src/adapter/sveltekit/sveltekit.adapter.spec.ts
+++ b/app/src/adapter/sveltekit/sveltekit.adapter.spec.ts
@@ -9,7 +9,7 @@ afterAll(enableConsoleLog);
 
 describe("sveltekit adapter", () => {
    adapterTestSuite(bunTestRunner, {
-      makeApp: sveltekit.getApp,
-      makeHandler: (c, a) => (request: Request) => sveltekit.serve(c, a)({ request }),
+      makeApp: (c, a) => sveltekit.getApp(c, a ?? ({} as any)),
+      makeHandler: (c, a) => (request: Request) => sveltekit.serve(c, a ?? ({} as any))({ request }),
    });
 });
diff --git a/app/src/adapter/sveltekit/sveltekit.adapter.ts b/app/src/adapter/sveltekit/sveltekit.adapter.ts
index 3454d72..7d7ea8d 100644
--- a/app/src/adapter/sveltekit/sveltekit.adapter.ts
+++ b/app/src/adapter/sveltekit/sveltekit.adapter.ts
@@ -1,21 +1,31 @@
 import { type FrameworkBkndConfig, createFrameworkApp } from "bknd/adapter";
 
-type SvelteKitEnv = NodeJS.ProcessEnv;
 type TSvelteKit = {
    request: Request;
 };
-export type SvelteKitBkndConfig<Env = SvelteKitEnv> = FrameworkBkndConfig<Env>;
 
-export async function getApp<Env = SvelteKitEnv>(
-   config: SvelteKitBkndConfig<Env> = {},
-   args: Env = process.env as Env,
+export type SvelteKitBkndConfig<Env> = FrameworkBkndConfig<Env>;
+
+/**
+ * Get bknd app instance
+ * @param config - bknd configuration
+ * @param args - environment variables (use $env/dynamic/private for universal runtime support)
+ */
+export async function getApp<Env>(
+   config: SvelteKitBkndConfig<Env> = {} as SvelteKitBkndConfig<Env>,
+   args: Env,
 ) {
    return await createFrameworkApp(config, args);
 }
 
-export function serve<Env = SvelteKitEnv>(
-   config: SvelteKitBkndConfig<Env> = {},
-   args: Env = process.env as Env,
+/**
+ * Create request handler for hooks.server.ts
+ * @param config - bknd configuration
+ * @param args - environment variables (use $env/dynamic/private for universal runtime support)
+ */
+export function serve<Env>(
+   config: SvelteKitBkndConfig<Env> = {} as SvelteKitBkndConfig<Env>,
+   args: Env,
 ) {
    return async (fnArgs: TSvelteKit) => {
       return (await getApp(config, args)).fetch(fnArgs.request);
diff --git a/examples/sveltekit/src/hooks.server.ts b/examples/sveltekit/src/hooks.server.ts
index 9993b77..1f4b055 100644
--- a/examples/sveltekit/src/hooks.server.ts
+++ b/examples/sveltekit/src/hooks.server.ts
@@ -1,8 +1,9 @@
 import type { Handle } from "@sveltejs/kit";
 import { serve } from "bknd/adapter/sveltekit";
+import { env } from "$env/dynamic/private";
 import config from "../bknd.config";
 
-const bkndHandler = serve(config);
+const bkndHandler = serve(config, env);
 
 export const handle: Handle = async ({ event, resolve }) => {
   // Handle bknd API requests
diff --git a/examples/sveltekit/src/routes/+page.server.ts b/examples/sveltekit/src/routes/+page.server.ts
index 6ca8ca1..8efbda8 100644
--- a/examples/sveltekit/src/routes/+page.server.ts
+++ b/examples/sveltekit/src/routes/+page.server.ts
@@ -1,9 +1,10 @@
 import type { PageServerLoad } from "./$types";
 import { getApp } from "bknd/adapter/sveltekit";
+import { env } from "$env/dynamic/private";
 import config from "../../bknd.config";
 
 export const load: PageServerLoad = async () => {
-  const app = await getApp(config);
+  const app = await getApp(config, env);
   const api = app.getApi();
 
   const todos = await api.data.readMany("todos");