Expose maxBoundarySize as an option

Author: sebmarkbage

packages/react-dom/src/server/ReactDOMFizzServerBrowser.js

@@ -18,6 +18,7 @@ import {
 
 type Options = {
   signal?: AbortSignal,
+  maxBoundarySize?: number,
 };
 
 function renderToReadableStream(
@@ -30,7 +31,11 @@ function renderToReadableStream(
   }
   return new ReadableStream({
     start(controller) {
-      request = createRequest(children, controller);
+      request = createRequest(
+        children,
+        controller,
+        options ? options.maxBoundarySize : undefined,
+      );
       startWork(request);
     },
     pull(controller) {

packages/react-dom/src/server/ReactDOMFizzServerNode.js

@@ -21,6 +21,10 @@ function createDrainHandler(destination, request) {
   return () => startFlowing(request);
 }
 
+type Options = {
+  maxBoundarySize?: number,
+};
+
 type Controls = {
   // Cancel any pending I/O and put anything remaining into
   // client rendered mode.
@@ -30,8 +34,13 @@ type Controls = {
 function pipeToNodeWritable(
   children: ReactNodeList,
   destination: Writable,
+  options?: Options,
 ): Controls {
-  const request = createRequest(children, destination);
+  const request = createRequest(
+    children,
+    destination,
+    options ? options.maxBoundarySize : undefined,
+  );
   destination.on('drain', createDrainHandler(destination, request));
   startWork(request);
   return {

packages/react-noop-renderer/src/ReactNoopServer.js

@@ -210,7 +210,11 @@ const ReactNoopServer = ReactFizzServer({
   },
 });
 
-function render(children: React$Element<any>): Destination {
+type Options = {
+  maxBoundarySize?: number,
+};
+
+function render(children: React$Element<any>, options?: Options): Destination {
   const destination: Destination = {
     root: null,
     placeholders: new Map(),
@@ -220,7 +224,11 @@ function render(children: React$Element<any>): Destination {
       ReactNoopServer.abort(request);
     },
   };
-  const request = ReactNoopServer.createRequest(children, destination);
+  const request = ReactNoopServer.createRequest(
+    children,
+    destination,
+    options ? options.maxBoundarySize : undefined,
+  );
   ReactNoopServer.startWork(request);
   return destination;
 }

packages/react-server/src/ReactFizzServer.js

@@ -116,13 +116,14 @@ type Request = {
 export function createRequest(
   children: ReactNodeList,
   destination: Destination,
+  maxBoundarySize: number = 1024,
 ): Request {
   const pingedWork = [];
   const abortSet: Set<SuspendedWork> = new Set();
   const request = {
     destination,
     responseState: createResponseState(),
-    maxBoundarySize: 1024,
+    maxBoundarySize,
     status: BUFFERING,
     nextSegmentId: 0,
     allPendingWork: 0,