Rename Mixed Mode to remote proxy/remote bindings depending on context

.changeset/nice-falcons-yell.md

@@ -0,0 +1,8 @@
+---
+"@cloudflare/vite-plugin": patch
+"@cloudflare/vitest-pool-workers": patch
+"miniflare": patch
+"wrangler": patch
+---
+
+Remove the Mixed Mode naming in favour of "remote bindings"/"remote proxy"

fixtures/vitest-pool-workers-mixed-mode/package.json → fixtures/vitest-pool-workers-remote-bindings/package.json

@@ -1,5 +1,5 @@
 {
-	"name": "@fixture/vitest-pool-workers-mixed-mode",
+	"name": "@fixture/vitest-pool-workers-remote-bindings",
 	"private": true,
 	"scripts": {
 		"test": "vitest run --config vitest.workers.config.ts",

fixtures/vitest-pool-workers-remote-bindings/remote-worker.js

@@ -0,0 +1,7 @@
+export default {
+	fetch() {
+		return new Response(
+			"Hello from a remote Worker part of the vitest-pool-workers remote bindings fixture!"
+		);
+	},
+};

fixtures/vitest-pool-workers-mixed-mode/test/index.spec.ts → fixtures/vitest-pool-workers-remote-bindings/test/index.spec.ts

@@ -18,15 +18,15 @@ describe("Hello World worker", () => {
 			const response = await env.MY_WORKER.fetch(request, env, ctx);
 			await waitOnExecutionContext(ctx);
 			expect(await response.text()).toMatchInlineSnapshot(
-				`"Hello from a remote worker part of the vitest-pool-workers mixed mode fixture!"`
+				`"Hello from a remote worker part of the vitest-pool-workers remote bindings fixture!"`
 			);
 		}
 	);
 
 	it("responds with Hello World! (integration style)", async () => {
 		const response = await SELF.fetch("https://example.com");
 		expect(await response.text()).toMatchInlineSnapshot(
-			`"Response from remote worker: Hello from a remote worker part of the vitest-pool-workers mixed mode fixture!"`
+			`"Response from remote worker: Hello from a remote worker part of the vitest-pool-workers remote bindings fixture!"`
 		);
 	});
 });

fixtures/vitest-pool-workers-mixed-mode/vitest.workers.config.ts → fixtures/vitest-pool-workers-remote-bindings/vitest.workers.config.ts

@@ -15,7 +15,7 @@ export default defineWorkersConfig({
 	test: {
 		poolOptions: {
 			workers: {
-				experimental_mixedMode: true,
+				experimental_remoteBindings: true,
 				wrangler: { configPath: "./wrangler.json" },
 			},
 		},

fixtures/vitest-pool-workers-remote-bindings/wrangler.json

@@ -0,0 +1,12 @@
+{
+	"name": "vitest-remote-bindings-fixture-test",
+	"main": "src/index.js",
+	"compatibility_date": "2025-06-01",
+	"services": [
+		{
+			"binding": "MY_WORKER",
+			"service": "my-worker-test",
+			"experimental_remote": true
+		}
+	]
+}

packages/miniflare/src/index.ts

@@ -432,12 +432,12 @@ function getExternalServiceEntrypoints(
 			for (const [name, service] of Object.entries(
 				workerOpts.core.serviceBindings
 			)) {
-				const { serviceName, entrypoint, mixedModeConnectionString } =
+				const { serviceName, entrypoint, remoteProxyConnectionString } =
 					normaliseServiceDesignator(service);
 
 				if (
 					// Skip if it is a remote service
-					mixedModeConnectionString === undefined &&
+					remoteProxyConnectionString === undefined &&
 					// Skip if the service is bound to another Worker defined in the Miniflare config
 					serviceName &&
 					!allWorkerNames.includes(serviceName)
@@ -466,12 +466,12 @@ function getExternalServiceEntrypoints(
 					scriptName,
 					unsafePreventEviction,
 					enableSql: useSQLite,
-					mixedModeConnectionString,
+					remoteProxyConnectionString,
 				} = normaliseDurableObject(designator);
 
 				if (
 					// Skip if it is a remote durable object
-					mixedModeConnectionString === undefined &&
+					remoteProxyConnectionString === undefined &&
 					// Skip if the durable object is bound to a Worker that exists in the current Miniflare config
 					scriptName &&
 					!allWorkerNames.includes(scriptName)
@@ -501,12 +501,12 @@ function getExternalServiceEntrypoints(
 				const {
 					serviceName = workerOpts.core.name,
 					entrypoint,
-					mixedModeConnectionString,
+					remoteProxyConnectionString,
 				} = normaliseServiceDesignator(workerOpts.core.tails[i]);
 
 				if (
 					// Skip if it is a remote service
-					mixedModeConnectionString === undefined &&
+					remoteProxyConnectionString === undefined &&
 					// Skip if the service is bound to the existing workers
 					serviceName &&
 					!allWorkerNames.includes(serviceName)
@@ -2196,7 +2196,7 @@ export class Miniflare {
 							workerOpts.do.durableObjects ?? {}
 						).reduce<WorkerDefinition["durableObjects"]>(
 							(internalObjects, [bindingName, designator]) => {
-								const { className, scriptName, mixedModeConnectionString } =
+								const { className, scriptName, remoteProxyConnectionString } =
 									normaliseDurableObject(designator);
 
 								if (
@@ -2205,7 +2205,7 @@ export class Miniflare {
 									// If the scriptName matches one of the workers defined, it is internal as well
 									allWorkerNames.includes(scriptName) ||
 									// If it is not a remote durable object
-									mixedModeConnectionString === undefined
+									remoteProxyConnectionString === undefined
 								) {
 									internalObjects.push({
 										name: bindingName,

packages/miniflare/src/plugins/ai/index.ts

@@ -1,15 +1,15 @@
 import assert from "node:assert";
 import { z } from "zod";
 import {
-	mixedModeClientWorker,
-	MixedModeConnectionString,
 	Plugin,
 	ProxyNodeBinding,
+	remoteProxyClientWorker,
+	RemoteProxyConnectionString,
 } from "../shared";
 
 const AISchema = z.object({
 	binding: z.string(),
-	mixedModeConnectionString: z.custom<MixedModeConnectionString>(),
+	remoteProxyConnectionString: z.custom<RemoteProxyConnectionString>(),
 });
 
 export const AIOptionsSchema = z.object({
@@ -26,8 +26,8 @@ export const AI_PLUGIN: Plugin<typeof AIOptionsSchema> = {
 		}
 
 		assert(
-			options.ai.mixedModeConnectionString,
-			"Workers AI only supports Mixed Mode"
+			options.ai.remoteProxyConnectionString,
+			"Workers AI only supports running remotely"
 		);
 
 		return [
@@ -61,8 +61,8 @@ export const AI_PLUGIN: Plugin<typeof AIOptionsSchema> = {
 		return [
 			{
 				name: `${AI_PLUGIN_NAME}:${options.ai.binding}`,
-				worker: mixedModeClientWorker(
-					options.ai.mixedModeConnectionString,
+				worker: remoteProxyClientWorker(
+					options.ai.remoteProxyConnectionString,
 					options.ai.binding
 				),
 			},

packages/miniflare/src/plugins/browser-rendering/index.ts

@@ -1,15 +1,15 @@
 import assert from "node:assert";
 import { z } from "zod";
 import {
-	mixedModeClientWorker,
-	MixedModeConnectionString,
 	Plugin,
 	ProxyNodeBinding,
+	remoteProxyClientWorker,
+	RemoteProxyConnectionString,
 } from "../shared";
 
 const BrowserRenderingSchema = z.object({
 	binding: z.string(),
-	mixedModeConnectionString: z.custom<MixedModeConnectionString>(),
+	remoteProxyConnectionString: z.custom<RemoteProxyConnectionString>(),
 });
 
 export const BrowserRenderingOptionsSchema = z.object({
@@ -28,8 +28,8 @@ export const BROWSER_RENDERING_PLUGIN: Plugin<
 		}
 
 		assert(
-			options.browserRendering.mixedModeConnectionString,
-			"Workers Browser Rendering only supports Mixed Mode"
+			options.browserRendering.remoteProxyConnectionString,
+			"Workers Browser Rendering only supports running remotely"
 		);
 
 		return [
@@ -55,15 +55,15 @@ export const BROWSER_RENDERING_PLUGIN: Plugin<
 		}
 
 		assert(
-			options.browserRendering.mixedModeConnectionString,
-			"Workers Browser Rendering only supports Mixed Mode"
+			options.browserRendering.remoteProxyConnectionString,
+			"Workers Browser Rendering only supports running remotely"
 		);
 
 		return [
 			{
 				name: `${BROWSER_RENDERING_PLUGIN_NAME}:${options.browserRendering.binding}`,
-				worker: mixedModeClientWorker(
-					options.browserRendering.mixedModeConnectionString,
+				worker: remoteProxyClientWorker(
+					options.browserRendering.remoteProxyConnectionString,
 					options.browserRendering.binding
 				),
 			},

packages/miniflare/src/plugins/core/index.ts

@@ -41,10 +41,10 @@ import { getCacheServiceName } from "../cache";
 import { DURABLE_OBJECTS_STORAGE_SERVICE_NAME } from "../do";
 import {
 	kUnsafeEphemeralUniqueKey,
-	mixedModeClientWorker,
 	parseRoutes,
 	Plugin,
 	ProxyNodeBinding,
+	remoteProxyClientWorker,
 	SERVICE_LOOPBACK,
 	WORKER_BINDING_SERVICE_LOOPBACK,
 } from "../shared";
@@ -299,9 +299,9 @@ function getCustomServiceDesignator(
 	} else if (typeof service === "object") {
 		if ("node" in service) {
 			serviceName = getCustomNodeServiceName(workerIndex, kind, name);
-		} else if ("mixedModeConnectionString" in service) {
+		} else if ("remoteProxyConnectionString" in service) {
 			assert("name" in service && typeof service.name === "string");
-			serviceName = `${CORE_PLUGIN_NAME}:mixed-mode-service:${workerIndex}:${name}`;
+			serviceName = `${CORE_PLUGIN_NAME}:remote-proxy-service:${workerIndex}:${name}`;
 		}
 		// Worker with entrypoint
 		else if ("name" in service) {
@@ -378,17 +378,20 @@ function maybeGetCustomServiceService(
 		};
 	} else if (
 		typeof service === "object" &&
-		service.mixedModeConnectionString !== undefined
+		service.remoteProxyConnectionString !== undefined
 	) {
 		assert(
-			service.mixedModeConnectionString &&
+			service.remoteProxyConnectionString &&
 				service.name &&
 				typeof service.name === "string"
 		);
 
 		return {
-			name: `${CORE_PLUGIN_NAME}:mixed-mode-service:${workerIndex}:${name}`,
-			worker: mixedModeClientWorker(service.mixedModeConnectionString, name),
+			name: `${CORE_PLUGIN_NAME}:remote-proxy-service:${workerIndex}:${name}`,
+			worker: remoteProxyClientWorker(
+				service.remoteProxyConnectionString,
+				name
+			),
 		};
 	}
 }

packages/miniflare/src/plugins/core/services.ts

@@ -3,7 +3,7 @@ import { Request, Response } from "../../http";
 import {
 	HOST_CAPNP_CONNECT,
 	Miniflare,
-	MixedModeConnectionString,
+	RemoteProxyConnectionString,
 } from "../../index";
 import {
 	ExternalServer,
@@ -104,7 +104,9 @@ export const ServiceDesignatorSchema = z.union([
 		name: z.union([z.string(), z.literal(kCurrentWorker)]),
 		entrypoint: z.ostring(),
 		props: z.record(z.unknown()).optional(),
-		mixedModeConnectionString: z.custom<MixedModeConnectionString>().optional(),
+		remoteProxyConnectionString: z
+			.custom<RemoteProxyConnectionString>()
+			.optional(),
 	}),
 	z.object({ network: NetworkSchema }),
 	z.object({ external: ExternalServerSchema }),

packages/miniflare/src/plugins/d1/index.ts

@@ -12,14 +12,14 @@ import {
 	getMiniflareObjectBindings,
 	getPersistPath,
 	migrateDatabase,
-	mixedModeClientWorker,
-	MixedModeConnectionString,
 	namespaceEntries,
 	namespaceKeys,
 	objectEntryWorker,
 	PersistenceSchema,
 	Plugin,
 	ProxyNodeBinding,
+	remoteProxyClientWorker,
+	RemoteProxyConnectionString,
 	SERVICE_LOOPBACK,
 } from "../shared";
 
@@ -30,8 +30,8 @@ export const D1OptionsSchema = z.object({
 			z.record(
 				z.object({
 					id: z.string(),
-					mixedModeConnectionString: z
-						.custom<MixedModeConnectionString>()
+					remoteProxyConnectionString: z
+						.custom<RemoteProxyConnectionString>()
 						.optional(),
 				})
 			),
@@ -61,10 +61,10 @@ export const D1_PLUGIN: Plugin<
 	getBindings(options) {
 		const databases = namespaceEntries(options.d1Databases);
 		return databases.map<Worker_Binding>(
-			([name, { id, mixedModeConnectionString }]) => {
+			([name, { id, remoteProxyConnectionString }]) => {
 				assert(
-					!(name.startsWith("__D1_BETA__") && mixedModeConnectionString),
-					"Mixed Mode cannot be used with Alpha D1 Databases"
+					!(name.startsWith("__D1_BETA__") && remoteProxyConnectionString),
+					"Alpha D1 Databases cannot run remotely"
 				);
 
 				const binding = name.startsWith("__D1_BETA__")
@@ -106,10 +106,10 @@ export const D1_PLUGIN: Plugin<
 		const persist = sharedOptions.d1Persist;
 		const databases = namespaceEntries(options.d1Databases);
 		const services = databases.map<Service>(
-			([name, { id, mixedModeConnectionString }]) => ({
+			([name, { id, remoteProxyConnectionString }]) => ({
 				name: `${D1_DATABASE_SERVICE_PREFIX}:${id}`,
-				worker: mixedModeConnectionString
-					? mixedModeClientWorker(mixedModeConnectionString, name)
+				worker: remoteProxyConnectionString
+					? remoteProxyClientWorker(remoteProxyConnectionString, name)
 					: objectEntryWorker(D1_DATABASE_OBJECT, id),
 			})
 		);