diff --git a/packages/svelte/src/internal/client/context.js b/packages/svelte/src/internal/client/context.js
index be17fd5cd6..0965da2260 100644
--- a/packages/svelte/src/internal/client/context.js
+++ b/packages/svelte/src/internal/client/context.js
@@ -226,7 +226,10 @@ export function is_runes() {
 
 /**
  * @template T
- * @type {Hydratable<T>}
+ * @param {string} key
+ * @param {() => T} fn
+ * @param {{ transport?: Transport }} [options]
+ * @returns {Promise<T>}
  */
 export function hydratable(key, fn, { transport } = {}) {
 	if (!hydrating) {
diff --git a/packages/svelte/src/internal/client/reactivity/resources/create-fetcher.js b/packages/svelte/src/internal/client/reactivity/resources/create-fetcher.js
index 4e99300f1c..bba3d46529 100644
--- a/packages/svelte/src/internal/client/reactivity/resources/create-fetcher.js
+++ b/packages/svelte/src/internal/client/reactivity/resources/create-fetcher.js
@@ -2,7 +2,7 @@
 /** @import { StandardSchemaV1 } from '@standard-schema/spec' */
 
 import { compile } from 'path-to-regexp';
-import { create_resource } from './create-resource.js';
+import { create_resource } from './define-resource.js';
 
 /**
  * @template {Record<string, unknown>} TPathParams
diff --git a/packages/svelte/src/internal/client/reactivity/resources/create-resource.js b/packages/svelte/src/internal/client/reactivity/resources/define-resource.js
similarity index 74%
rename from packages/svelte/src/internal/client/reactivity/resources/create-resource.js
rename to packages/svelte/src/internal/client/reactivity/resources/define-resource.js
index 1f849f9df3..25fe537d58 100644
--- a/packages/svelte/src/internal/client/reactivity/resources/create-resource.js
+++ b/packages/svelte/src/internal/client/reactivity/resources/define-resource.js
@@ -1,6 +1,7 @@
+/** @import { Transport } from '#shared' */
 import { hydratable } from '../../context.js';
-import { tick } from '../../runtime';
-import { render_effect } from '../effects';
+import { tick } from '../../runtime.js';
+import { render_effect } from '../effects.js';
 import { Resource } from './resource.js';
 
 /** @typedef {{ count: number, resource: Resource<any> }} Entry */
@@ -12,14 +13,14 @@ const cache = new Map();
  * @template {unknown[]} [TArgs=[]]
  * @template {typeof Resource} [TResource=typeof Resource]
  * @param {string} name
- * @param {(...args: TArgs) => Promise<TReturn>} fn
- * @param {{ Resource?: TResource }} [options]
+ * @param {(...args: TArgs) => TReturn} fn
+ * @param {{ Resource?: TResource, transport?: Transport }} [options]
  * @returns {(...args: TArgs) => Resource<TReturn>}
  */
-export function create_resource(name, fn, options) {
+export function define_resource(name, fn, options = {}) {
 	const ResolvedResource = options?.Resource ?? Resource;
 	return (...args) => {
-		const stringified_args = JSON.stringify(args);
+		const stringified_args = (options.transport?.stringify ?? JSON.stringify)(args);
 		const cache_key = `${name}:${stringified_args}`;
 		let entry = cache.get(cache_key);
 		const maybe_remove = create_remover(cache_key);
@@ -41,7 +42,9 @@ export function create_resource(name, fn, options) {
 
 		let resource = entry?.resource;
 		if (!resource) {
-			resource = new ResolvedResource(() => hydratable(cache_key, () => fn(...args)));
+			resource = new ResolvedResource(() =>
+				hydratable(cache_key, () => fn(...args), { transport: options.transport })
+			);
 			const entry = {
 				resource,
 				count: tracking ? 1 : 0
diff --git a/packages/svelte/src/internal/client/reactivity/resources/resource.js b/packages/svelte/src/internal/client/reactivity/resources/resource.js
index 48e6a383ea..6fda261240 100644
--- a/packages/svelte/src/internal/client/reactivity/resources/resource.js
+++ b/packages/svelte/src/internal/client/reactivity/resources/resource.js
@@ -1,6 +1,6 @@
 /** @import { Source, Derived } from '#client' */
 import { state, derived, set, get, tick } from '../../index.js';
-import { deferred, noop } from '../../../shared/utils.js';
+import { deferred } from '../../../shared/utils.js';
 
 /**
  * @template T
diff --git a/packages/svelte/src/internal/server/context.js b/packages/svelte/src/internal/server/context.js
index 93bd3479be..91299b12c1 100644
--- a/packages/svelte/src/internal/server/context.js
+++ b/packages/svelte/src/internal/server/context.js
@@ -1,6 +1,6 @@
 /** @import { ALSContext, SSRContext } from '#server' */
 /** @import { AsyncLocalStorage } from 'node:async_hooks' */
-/** @import { Hydratable } from '#shared' */
+/** @import { Transport } from '#shared' */
 import { DEV } from 'esm-env';
 import * as e from './errors.js';
 
@@ -127,7 +127,10 @@ export async function save(promise) {
 
 /**
  * @template T
- * @type {Hydratable<T>}
+ * @param {string} key
+ * @param {() => T} fn
+ * @param {{ transport?: Transport }} [options]
+ * @returns {Promise<T>}
  */
 export async function hydratable(key, fn, { transport } = {}) {
 	const store = await get_render_store();
diff --git a/packages/svelte/src/internal/server/types.d.ts b/packages/svelte/src/internal/server/types.d.ts
index d8698fd4a4..0c45c0adc5 100644
--- a/packages/svelte/src/internal/server/types.d.ts
+++ b/packages/svelte/src/internal/server/types.d.ts
@@ -20,7 +20,7 @@ export interface ALSContext {
 		string,
 		{
 			value: MaybePromise<unknown>;
-			transport: Transport<any> | undefined;
+			transport: Transport | undefined;
 		}
 	>;
 }
diff --git a/packages/svelte/src/internal/shared/types.d.ts b/packages/svelte/src/internal/shared/types.d.ts
index 3823eec5c9..52456a814d 100644
--- a/packages/svelte/src/internal/shared/types.d.ts
+++ b/packages/svelte/src/internal/shared/types.d.ts
@@ -11,13 +11,7 @@ export type Snapshot<T> = ReturnType<typeof $state.snapshot<T>>;
 
 export type MaybePromise<T> = T | Promise<T>;
 
-export type Hydratable<T> = (
-	key: string,
-	fn: () => T,
-	options?: { transport?: Transport<T> }
-) => Promise<T>;
-
-export type Transport<T> = {
-	stringify: (value: T) => string;
-	parse: (value: string) => T;
+export type Transport = {
+	stringify: (value: unknown) => string;
+	parse: (value: string) => unknown;
 };
diff --git a/packages/svelte/src/reactivity/index-client.js b/packages/svelte/src/reactivity/index-client.js
index 42cd28658b..fe5318dae3 100644
--- a/packages/svelte/src/reactivity/index-client.js
+++ b/packages/svelte/src/reactivity/index-client.js
@@ -6,5 +6,5 @@ export { SvelteURLSearchParams } from './url-search-params.js';
 export { MediaQuery } from './media-query.js';
 export { createSubscriber } from './create-subscriber.js';
 export { Resource } from '../internal/client/reactivity/resources/resource.js';
-export { create_resource as createResource } from '../internal/client/reactivity/resources/create-resource.js';
+export { define_resource as defineResource } from '../internal/client/reactivity/resources/define-resource.js';
 export { create_fetcher as createFetcher } from '../internal/client/reactivity/resources/create-fetcher.js';
diff --git a/packages/svelte/src/reactivity/index-server.js b/packages/svelte/src/reactivity/index-server.js
index 29da641110..1d0d5c8226 100644
--- a/packages/svelte/src/reactivity/index-server.js
+++ b/packages/svelte/src/reactivity/index-server.js
@@ -1,5 +1,6 @@
 /** @import { StandardSchemaV1 } from '@standard-schema/spec' */
-import { compile } from 'path-to-regexp';
+/** @import { Transport } from '#shared' */
+import { uneval } from 'devalue';
 import { hydratable } from '../internal/server/context.js';
 
 export const SvelteDate = globalThis.Date;
@@ -122,20 +123,22 @@ const cache = new Map();
  * @template {unknown[]} [TArgs=[]]
  * @template {typeof Resource} [TResource=typeof Resource]
  * @param {string} name
- * @param {(...args: TArgs) => Promise<TReturn>} fn
- * @param {{ Resource?: TResource }} [options]
+ * @param {(...args: TArgs) => TReturn} fn
+ * @param {{ Resource?: TResource, transport?: Transport }} [options]
  * @returns {(...args: TArgs) => Resource<TReturn>}
  */
-export function createResource(name, fn, options) {
+export function defineResource(name, fn, options = {}) {
 	const ResolvedResource = options?.Resource ?? Resource;
 	return (...args) => {
-		const stringified_args = JSON.stringify(args);
+		const stringified_args = (options.transport?.stringify ?? JSON.stringify)(args);
 		const cache_key = `${name}:${stringified_args}`;
 		const entry = cache.get(cache_key);
 		if (entry) {
 			return entry;
 		}
-		const resource = new ResolvedResource(() => hydratable(cache_key, () => fn(...args)));
+		const resource = new ResolvedResource(() =>
+			hydratable(cache_key, () => fn(...args), { transport: options.transport })
+		);
 		cache.set(cache_key, resource);
 		return resource;
 	};