feat(@react-router/dev): remove deprecated ABORT_DELAY in favor of streamTimeout

.changeset/wild-dogs-double.md

@@ -0,0 +1,8 @@
+---
+"@react-router/dev": patch
+---
+
+Remove the leftover/unused `abortDelay` prop from `ServerRouter` and update the default `entry.server.tsx` to use the new `streamTimeout` value for Single Fetch
+
+- The `abortDelay` functionality was removed in v7 as it was coupled to the `defer` implementation from Remix v2, but this removal of this prop was missed
+- If you were still using this prop in your `entry.server` file, it's likely your app is not aborting streams as you would expect and you will need to adopt the new [`streamTimeout`](https://reactrouter.com/explanation/special-files#streamtimeout) value introduced with Single Fetch

docs/explanation/special-files.md

@@ -229,6 +229,32 @@ The `default` export of this module is a function that lets you create the respo
 
 This module should render the markup for the current page using a `<ServerRouter>` element with the `context` and `url` for the current request. This markup will (optionally) be re-hydrated once JavaScript loads in the browser using the [client entry module][client-entry].
 
+### `streamTimeout`
+
+If you are [streaming] responses, you can export an optional `streamTimeout` value (in milliseconds) that will control the amount of time the server will wait for streamed promises to settle before rejecting outstanding promises them and closing the stream.
+
+It's recommended to decouple this value from the timeout in which you abort the React renderer. You should always set the React rendering timeout to a higher value so it has time to stream down the underlying rejections from your `streamTimeout`.
+
+```tsx lines=[1-2,13-15]
+// Reject all pending promises from handler functions after 10 seconds
+export const streamTimeout = 10000;
+
+export default function handleRequest(...) {
+  return new Promise((resolve, reject) => {
+    // ...
+
+    const { pipe, abort } = renderToPipeableStream(
+      <ServerRouter context={routerContext} url={request.url} />,
+      { /* ... */ }
+    );
+
+    // Abort the streaming render pass after 11 seconds soto allow the rejected
+    // boundaries to be flushed
+    setTimeout(abort, streamTimeout + 1000);
+  });
+}
+```
+
 ### `handleDataRequest`
 
 You can export an optional `handleDataRequest` function that will allow you to modify the response of a data request. These are the requests that do not render HTML, but rather return the loader and action data to the browser once client-side hydration has occurred.
@@ -289,3 +315,4 @@ Note that this does not handle thrown `Response` instances from your `loader`/`a
 [rendertopipeablestream]: https://react.dev/reference/react-dom/server/renderToPipeableStream
 [rendertoreadablestream]: https://react.dev/reference/react-dom/server/renderToReadableStream
 [node-streaming-entry-server]: https://github.com/remix-run/react-router/blob/dev/packages/react-router-dev/config/defaults/entry.server.node.tsx
+[streaming]: ../how-to/suspense

integration/error-sanitization-test.ts

@@ -497,8 +497,6 @@ test.describe("Error Sanitization", () => {
               import { ServerRouter, isRouteErrorResponse } from "react-router";
               import { renderToPipeableStream } from "react-dom/server";
 
-              const ABORT_DELAY = 5_000;
-
               export default function handleRequest(
                 request,
                 responseStatusCode,
@@ -508,11 +506,7 @@ test.describe("Error Sanitization", () => {
                 return new Promise((resolve, reject) => {
                   let shellRendered = false;
                   const { pipe, abort } = renderToPipeableStream(
-                    <ServerRouter
-                      context={remixContext}
-                      url={request.url}
-                      abortDelay={ABORT_DELAY}
-                    />,
+                    <ServerRouter context={remixContext} url={request.url} />,
                     {
                       onShellReady() {
                         shellRendered = true;
@@ -545,7 +539,7 @@ test.describe("Error Sanitization", () => {
                     }
                   );
 
-                  setTimeout(abort, ABORT_DELAY);
+                  setTimeout(abort, 5000);
                 });
               }
 

integration/vite-dev-custom-entry-test.ts

@@ -14,8 +14,6 @@ const files: Files = async ({ port }) => ({
     import { ServerRouter } from "react-router";
     import { renderToPipeableStream } from "react-dom/server";
 
-    const ABORT_DELAY = 5_000;
-
     export default function handleRequest(
       request: Request,
       responseStatusCode: number,
@@ -25,11 +23,7 @@ const files: Files = async ({ port }) => ({
       return new Promise((resolve, reject) => {
         let shellRendered = false;
         const { pipe, abort } = renderToPipeableStream(
-          <ServerRouter
-            context={remixContext}
-            url={request.url}
-            abortDelay={ABORT_DELAY}
-          />,
+          <ServerRouter context={remixContext} url={request.url} />,
           {
             onShellReady() {
               shellRendered = true;
@@ -65,7 +59,7 @@ const files: Files = async ({ port }) => ({
           }
         );
 
-        setTimeout(abort, ABORT_DELAY);
+        setTimeout(abort, 5000);
       });
     }
   `,

integration/vite-spa-mode-test.ts

@@ -296,8 +296,6 @@ test.describe("SPA Mode", () => {
             import { ServerRouter } from "react-router";
             import { renderToPipeableStream } from "react-dom/server";
 
-            const ABORT_DELAY = 5_000;
-
             export default function handleRequest(
               request: Request,
               responseStatusCode: number,
@@ -322,11 +320,7 @@ test.describe("SPA Mode", () => {
               const html = await new Promise((resolve, reject) => {
                 let shellRendered = false;
                 const { pipe, abort } = renderToPipeableStream(
-                  <ServerRouter
-                    context={remixContext}
-                    url={request.url}
-                    abortDelay={ABORT_DELAY}
-                  />,
+                  <ServerRouter context={remixContext} url={request.url} />,
                   {
                     onAllReady() {
                       shellRendered = true;
@@ -359,7 +353,7 @@ test.describe("SPA Mode", () => {
                   }
                 );
 
-                setTimeout(abort, ABORT_DELAY);
+                setTimeout(abort, 5000);
               });
 
               const shellHtml = fs

packages/react-router-dev/config/defaults/entry.server.node.tsx

@@ -7,7 +7,7 @@ import { isbot } from "isbot";
 import type { RenderToPipeableStreamOptions } from "react-dom/server";
 import { renderToPipeableStream } from "react-dom/server";
 
-const ABORT_DELAY = 5_000;
+export const streamTimeout = 5_000;
 
 export default function handleRequest(
   request: Request,
@@ -28,11 +28,7 @@ export default function handleRequest(
         : "onShellReady";
 
     const { pipe, abort } = renderToPipeableStream(
-      <ServerRouter
-        context={routerContext}
-        url={request.url}
-        abortDelay={ABORT_DELAY}
-      />,
+      <ServerRouter context={routerContext} url={request.url} />,
       {
         [readyOption]() {
           shellRendered = true;
@@ -65,6 +61,8 @@ export default function handleRequest(
       }
     );
 
-    setTimeout(abort, ABORT_DELAY);
+    // Abort the rendering stream after the `streamTimeout` so it has tine to
+    // flush down the rejected boundaries
+    setTimeout(abort, streamTimeout + 1000);
   });
 }

packages/react-router/lib/dom/ssr/entry.ts

@@ -17,7 +17,6 @@ export interface FrameworkContextObject {
   serverHandoffString?: string;
   future: FutureConfig;
   isSpaMode: boolean;
-  abortDelay?: number;
   serializeError?(error: Error): SerializedError;
   renderMeta?: {
     didRenderScripts?: boolean;

packages/react-router/lib/dom/ssr/server.tsx

@@ -11,7 +11,6 @@ import { StreamTransfer } from "./single-fetch";
 export interface ServerRouterProps {
   context: EntryContext;
   url: string | URL;
-  abortDelay?: number;
   nonce?: string;
 }
 
@@ -25,7 +24,6 @@ export interface ServerRouterProps {
 export function ServerRouter({
   context,
   url,
-  abortDelay,
   nonce,
 }: ServerRouterProps): ReactElement {
   if (typeof url === "string") {
@@ -79,7 +77,6 @@ export function ServerRouter({
           future: context.future,
           isSpaMode: context.isSpaMode,
           serializeError: context.serializeError,
-          abortDelay,
           renderMeta: context.renderMeta,
         }}
       >

packages/react-router/lib/server-runtime/single-fetch.ts

@@ -313,11 +313,12 @@ export function encodeViaTurboStream(
 ) {
   let controller = new AbortController();
   // How long are we willing to wait for all of the promises in `data` to resolve
-  // before timing out?  We default this to 50ms shorter than the default value for
-  // `ABORT_DELAY` in our built-in `entry.server.tsx` so that once we reject we
-  // have time to flush the rejections down through React's rendering stream before `
-  // we call abort() on that.  If the user provides their own it's up to them to
-  // decouple the aborting of the stream from the aborting of React's renderToPipeableStream
+  // before timing out?  We default this to 50ms shorter than the default value
+  // of 5000ms we had in `ABORT_DELAY` in Remix v2 that folks may still be using
+  // in RR v7 so that once we reject we have time to flush the rejections down
+  // through React's rendering stream before we call `abort()` on that.  If the
+  // user provides their own it's up to them to decouple the aborting of the
+  // stream from the aborting of React's `renderToPipeableStream`
   let timeoutId = setTimeout(
     () => controller.abort(new Error("Server Timeout")),
     typeof streamTimeout === "number" ? streamTimeout : 4950

playground/framework-express/app/entry.server.tsx

@@ -6,8 +6,6 @@ import { ServerRouter } from "react-router";
 import { isbot } from "isbot";
 import { renderToPipeableStream } from "react-dom/server";
 
-const ABORT_DELAY = 5_000;
-
 export default function handleRequest(
   request: Request,
   responseStatusCode: number,
@@ -39,11 +37,7 @@ function handleBotRequest(
   return new Promise((resolve, reject) => {
     let shellRendered = false;
     const { pipe, abort } = renderToPipeableStream(
-      <ServerRouter
-        context={reactRouterContext}
-        url={request.url}
-        abortDelay={ABORT_DELAY}
-      />,
+      <ServerRouter context={reactRouterContext} url={request.url} />,
       {
         onAllReady() {
           shellRendered = true;
@@ -76,7 +70,7 @@ function handleBotRequest(
       }
     );
 
-    setTimeout(abort, ABORT_DELAY);
+    setTimeout(abort, 5000);
   });
 }
 
@@ -89,11 +83,7 @@ function handleBrowserRequest(
   return new Promise((resolve, reject) => {
     let shellRendered = false;
     const { pipe, abort } = renderToPipeableStream(
-      <ServerRouter
-        context={reactRouterContext}
-        url={request.url}
-        abortDelay={ABORT_DELAY}
-      />,
+      <ServerRouter context={reactRouterContext} url={request.url} />,
       {
         onShellReady() {
           shellRendered = true;
@@ -126,6 +116,6 @@ function handleBrowserRequest(
       }
     );
 
-    setTimeout(abort, ABORT_DELAY);
+    setTimeout(abort, 5000);
   });
 }

playground/framework/app/entry.server.tsx

@@ -6,8 +6,6 @@ import { ServerRouter } from "react-router";
 import { isbot } from "isbot";
 import { renderToPipeableStream } from "react-dom/server";
 
-const ABORT_DELAY = 5_000;
-
 export default function handleRequest(
   request: Request,
   responseStatusCode: number,
@@ -39,11 +37,7 @@ function handleBotRequest(
   return new Promise((resolve, reject) => {
     let shellRendered = false;
     const { pipe, abort } = renderToPipeableStream(
-      <ServerRouter
-        context={reactRouterContext}
-        url={request.url}
-        abortDelay={ABORT_DELAY}
-      />,
+      <ServerRouter context={reactRouterContext} url={request.url} />,
       {
         onAllReady() {
           shellRendered = true;
@@ -76,7 +70,7 @@ function handleBotRequest(
       }
     );
 
-    setTimeout(abort, ABORT_DELAY);
+    setTimeout(abort, 5000);
   });
 }
 
@@ -89,11 +83,7 @@ function handleBrowserRequest(
   return new Promise((resolve, reject) => {
     let shellRendered = false;
     const { pipe, abort } = renderToPipeableStream(
-      <ServerRouter
-        context={reactRouterContext}
-        url={request.url}
-        abortDelay={ABORT_DELAY}
-      />,
+      <ServerRouter context={reactRouterContext} url={request.url} />,
       {
         onShellReady() {
           shellRendered = true;
@@ -126,6 +116,6 @@ function handleBrowserRequest(
       }
     );
 
-    setTimeout(abort, ABORT_DELAY);
+    setTimeout(abort, 5000);
   });
 }