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Improve CPU performance in RSC #1452

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Jun 7, 2022
Merged

Improve CPU performance in RSC #1452

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5e937ae
Improve CPU performance in RSC check
frandiox Jun 7, 2022
805b010
Changeset
frandiox Jun 7, 2022
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5 changes: 5 additions & 0 deletions .changeset/five-cougars-begin.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
'@shopify/hydrogen': patch
---

Reduce CPU consumption when rendering React Server Components.
10 changes: 3 additions & 7 deletions packages/hydrogen/vendor/react-server-dom-vite/esm/react-server-dom-vite-client-proxy.js
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Expand Up @@ -8,7 +8,7 @@
* LICENSE file in the root directory of this source tree.
*/

import { useState } from 'react';
import React from 'react';

// Store of components discovered during RSC to load
// them later when consuming the response in SSR.
Expand All @@ -21,12 +21,8 @@ var STRING_SIZE_LIMIT = 64;
var FN_RSC_ERROR = 'Functions exported from client components cannot be called or used as constructors from a server component.'; // TODO what's a better way to detect Flight runtime?

function isRsc() {
try {
useState();
return false;
} catch (error) {
return error.message.endsWith('Server Components.');
}
// This method is only available during RSC
return !!React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.ReactCurrentDispatcher.current.getCacheForType;
}

function createModuleReference(id, value, name, isDefault) {
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