fix(relay): expose bodyLimit option in next, react, and vue adapter types

The relay bodyLimit option was supported end-to-end (transform plugins →
RelayControl → env var → Fastify) but missing from the inline relay type
definitions in @domscribe/next, @domscribe/react (vite), and
@domscribe/vue (vite). Users of these adapters couldn't configure
bodyLimit without bypassing TypeScript.

Adds bodyLimit to all three inline types and adds test coverage for
bodyLimit passthrough in next, nuxt, turbopack loader, and relay-control.

Author: Narrator

packages/domscribe-next/src/types.ts

@@ -62,6 +62,13 @@ export interface DomscribeNextOptions {
      * @default '127.0.0.1'
      */
     host?: string;
+
+    /**
+     * Max request body size in bytes (only used if starting).
+     *
+     * @default 10485760 (10 MB)
+     */
+    bodyLimit?: number;
   };
 
   /**

packages/domscribe-next/src/with-domscribe.spec.ts

@@ -316,7 +316,7 @@ describe('withDomscribe', () => {
       it('should pass loader options including debug, relay, overlay', () => {
         const result = withDomscribe({
           debug: true,
-          relay: { port: 5000, host: '0.0.0.0' },
+          relay: { port: 5000, host: '0.0.0.0', bodyLimit: 5242880 },
           overlay: { initialMode: 'expanded', debug: true },
         })({});
         const webpackFn = result.webpack as (
@@ -333,7 +333,7 @@ describe('withDomscribe', () => {
         expect(loaderEntry.options).toEqual({
           debug: true,
           enabled: true,
-          relay: { port: 5000, host: '0.0.0.0' },
+          relay: { port: 5000, host: '0.0.0.0', bodyLimit: 5242880 },
           overlay: { initialMode: 'expanded', debug: true },
           autoInitPath: '/resolved/@domscribe/next/auto-init',
         });

packages/domscribe-nuxt/src/module.spec.ts

@@ -193,14 +193,18 @@ describe('domscribeModule', () => {
         const nuxt = createMockNuxt();
 
         await callSetup(
-          { debug: false, relay: { port: 3001, host: '0.0.0.0' } },
+          {
+            debug: false,
+            relay: { port: 3001, host: '0.0.0.0', bodyLimit: 5242880 },
+          },
           nuxt,
         );
 
         expect(MockRelayControl).toHaveBeenCalledWith('/test/project');
         expect(mockEnsureRunning).toHaveBeenCalledWith({
           port: 3001,
           host: '0.0.0.0',
+          bodyLimit: 5242880,
         });
       });
 

packages/domscribe-react/src/vite/types.ts

@@ -38,6 +38,12 @@ export interface DomscribeReactPluginOptions {
     autoStart?: boolean;
     port?: number;
     host?: string;
+    /**
+     * Max request body size in bytes (only used if starting).
+     *
+     * @default 10485760 (10 MB)
+     */
+    bodyLimit?: number;
   };
   overlay?:
     | boolean

packages/domscribe-relay/src/lifecycle/relay-control.spec.ts

@@ -199,7 +199,7 @@ describe('RelayControl', () => {
     it('should call child_process.spawn with correct arguments', () => {
       const control = new RelayControl('/test/workspace', { debug: true });
 
-      control.spawn({ port: 8080, host: '0.0.0.0' });
+      control.spawn({ port: 8080, host: '0.0.0.0', bodyLimit: 5242880 });
 
       expect(spawn).toHaveBeenCalledWith(
         process.execPath,
@@ -212,6 +212,7 @@ describe('RelayControl', () => {
             DS_WORKSPACE_ROOT: '/test/workspace',
             DS_RELAY_PORT: '8080',
             DS_RELAY_HOST: '0.0.0.0',
+            DS_RELAY_BODY_LIMIT: '5242880',
             DS_DEBUG: '1',
           }),
         }),

packages/domscribe-transform/src/plugins/turbopack/turbopack.loader.spec.ts

@@ -288,7 +288,7 @@ describe('Turbopack Loader', () => {
       // Arrange
       const source = 'export function App() { return <div>Hello</div>; }';
       const context = createLoaderContext('/test/App.tsx', {
-        relay: { port: 5000 },
+        relay: { port: 5000, bodyLimit: 5242880 },
       });
       const asyncCallback = vi.fn();
       context.async = vi.fn(() => asyncCallback);
@@ -304,6 +304,7 @@ describe('Turbopack Loader', () => {
       expect(mockRelayControl.ensureRunning).toHaveBeenCalledWith({
         port: 5000,
         host: undefined,
+        bodyLimit: 5242880,
       });
     });
 

packages/domscribe-vue/src/vite/types.ts

@@ -28,6 +28,12 @@ export interface DomscribeVuePluginOptions {
     autoStart?: boolean;
     port?: number;
     host?: string;
+    /**
+     * Max request body size in bytes (only used if starting).
+     *
+     * @default 10485760 (10 MB)
+     */
+    bodyLimit?: number;
   };
   overlay?:
     | boolean