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fix: render SSR-enabled build entries once by teeing the RSC stream #163

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Merged
uhyo merged 1 commit into from
Jul 21, 2026
+5 −6
Merged

fix: render SSR-enabled build entries once by teeing the RSC stream #163

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11 changes: 5 additions & 6 deletions packages/static/src/rsc/entry.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -293,13 +293,12 @@ export async function build() {
let appRscStream: ReadableStream<Uint8Array>;

if (ssrEnabled) {
// SSR on: both streams have full tree
rootRscStream = renderToReadableStream<RscPayload>({
// SSR on: render the full tree once and tee the stream — one branch
// for SSR HTML, one for the app RSC payload. Rendering twice would
// execute every server component (and defer()) twice per entry (#147).
[rootRscStream, appRscStream] = renderToReadableStream<RscPayload>({
root: <Root>{appNode}</Root>,
});
appRscStream = renderToReadableStream<RscPayload>({
root: <Root>{appNode}</Root>,
});
}).tee();
} else {
// SSR off: root stream has shell, app stream has App only
rootRscStream = renderToReadableStream<RscPayload>({
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