Add initial RSC Framework Mode implementation

Author: markdalgleish

integration/action-test.ts

@@ -7,11 +7,12 @@ import {
 } from "./helpers/create-fixture.js";
 import type { Fixture, AppFixture } from "./helpers/create-fixture.js";
 import { PlaywrightFixture, selectHtml } from "./helpers/playwright-fixture.js";
-import type { TemplateName } from "./helpers/vite.js";
+import { type TemplateName, reactRouterConfig } from "./helpers/vite.js";
 
 const templateNames = [
   "vite-5-template",
   "rsc-parcel-framework",
+  "rsc-vite-framework",
 ] as const satisfies TemplateName[];
 
 test.describe("actions", () => {
@@ -31,6 +32,9 @@ test.describe("actions", () => {
         fixture = await createFixture({
           templateName,
           files: {
+            "react-router.config.ts": reactRouterConfig({
+              viteEnvironmentApi: templateName.includes("rsc"),
+            }),
             "app/routes/urlencoded.tsx": js`
               import { Form, useActionData } from "react-router";
 

integration/catch-boundary-data-test.ts

@@ -7,11 +7,12 @@ import {
 } from "./helpers/create-fixture.js";
 import type { Fixture, AppFixture } from "./helpers/create-fixture.js";
 import { PlaywrightFixture } from "./helpers/playwright-fixture.js";
-import type { TemplateName } from "./helpers/vite.js";
+import { reactRouterConfig, type TemplateName } from "./helpers/vite.js";
 
 const templateNames = [
   "vite-5-template",
   "rsc-parcel-framework",
+  "rsc-vite-framework",
 ] as const satisfies TemplateName[];
 
 let ROOT_BOUNDARY_TEXT = "ROOT_TEXT" as const;
@@ -48,6 +49,9 @@ test.describe("ErrorBoundary (thrown responses)", () => {
         fixture = await createFixture({
           templateName,
           files: {
+            "react-router.config.ts": reactRouterConfig({
+              viteEnvironmentApi: templateName.includes("rsc"),
+            }),
             "app/root.tsx": js`
               import {
                 Links,