Expose prerender() for SSG

Author: sebmarkbage

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

@@ -38,6 +38,8 @@ import {
   createRootFormatContext,
 } from 'react-dom-bindings/src/server/ReactFizzConfigDOM';
 
+import {enablePostpone, enableHalt} from 'shared/ReactFeatureFlags';
+
 import {ensureCorrectIsomorphicReactVersion} from '../shared/ensureCorrectIsomorphicReactVersion';
 ensureCorrectIsomorphicReactVersion();
 
@@ -85,10 +87,15 @@ function prerender(
         {highWaterMark: 0},
       );
 
-      const result = {
-        postponed: getPostponedState(request),
-        prelude: stream,
-      };
+      const result: StaticResult =
+        enablePostpone || enableHalt
+          ? {
+              postponed: getPostponedState(request),
+              prelude: stream,
+            }
+          : ({
+              prelude: stream,
+            }: any);
       resolve(result);
     }
 

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

@@ -38,6 +38,8 @@ import {
   createRootFormatContext,
 } from 'react-dom-bindings/src/server/ReactFizzConfigDOM';
 
+import {enablePostpone, enableHalt} from 'shared/ReactFeatureFlags';
+
 import {ensureCorrectIsomorphicReactVersion} from '../shared/ensureCorrectIsomorphicReactVersion';
 ensureCorrectIsomorphicReactVersion();
 
@@ -85,10 +87,15 @@ function prerender(
         {highWaterMark: 0},
       );
 
-      const result = {
-        postponed: getPostponedState(request),
-        prelude: stream,
-      };
+      const result: StaticResult =
+        enablePostpone || enableHalt
+          ? {
+              postponed: getPostponedState(request),
+              prelude: stream,
+            }
+          : ({
+              prelude: stream,
+            }: any);
       resolve(result);
     }
 

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

@@ -39,6 +39,8 @@ import {
   createRootFormatContext,
 } from 'react-dom-bindings/src/server/ReactFizzConfigDOM';
 
+import {enablePostpone, enableHalt} from 'shared/ReactFeatureFlags';
+
 import {ensureCorrectIsomorphicReactVersion} from '../shared/ensureCorrectIsomorphicReactVersion';
 ensureCorrectIsomorphicReactVersion();
 
@@ -94,10 +96,15 @@ function prerenderToNodeStream(
       });
       const writable = createFakeWritable(readable);
 
-      const result = {
-        postponed: getPostponedState(request),
-        prelude: readable,
-      };
+      const result: StaticResult =
+        enablePostpone || enableHalt
+          ? {
+              postponed: getPostponedState(request),
+              prelude: readable,
+            }
+          : ({
+              prelude: readable,
+            }: any);
       resolve(result);
     }
     const resumableState = createResumableState(

packages/react-dom/src/server/react-dom-server.browser.stable.js

@@ -8,3 +8,4 @@
  */
 
 export {renderToReadableStream, version} from './ReactDOMFizzServerBrowser.js';
+export {prerender} from './ReactDOMFizzStaticBrowser.js';

packages/react-dom/src/server/react-dom-server.edge.stable.js

@@ -8,3 +8,4 @@
  */
 
 export {renderToReadableStream, version} from './ReactDOMFizzServerEdge.js';
+export {prerender} from './ReactDOMFizzStaticEdge.js';

packages/react-dom/src/server/react-dom-server.node.stable.js

@@ -8,3 +8,4 @@
  */
 
 export {renderToPipeableStream, version} from './ReactDOMFizzServerNode.js';
+export {prerenderToNodeStream} from './ReactDOMFizzStaticNode.js';