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[Fiber] track stylesheet preloads when explicitly preloaded - #36386
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gnoff merged 2 commits intoMay 7, 2026
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Previously stylesheet resources would omit connecting with preloads inserted via `preload` which caused unecessary suspension of commits since the stylsheet resource would attempt ot load the stylesheet again and delay the initial commit or commit a fallback (depending on whether the current screen should remain). This missing piece is that if you preload a stylesheet you must be able to use that sheets loading state when determining if the stylesheet is already loaded or not. This adds a pending indicator on client inserted prelaod links. We still assume SSR'd preloads are already loaded.
Comparing: f4e0d4e...a13ce76 Critical size changesIncludes critical production bundles, as well as any change greater than 2%:
Significant size changesIncludes any change greater than 0.2%: (No significant changes) |
eps1lon
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May 4, 2026
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…tylesheets remains because it is byte length sensitive with the fizz runtime.
eps1lon
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May 6, 2026
acdlite
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May 7, 2026
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May 7, 2026
Previously stylesheet resources would omit connecting with preloads inserted via `preload` which caused unecessary suspension of commits since the stylsheet resource would attempt to load the stylesheet again and delay the initial commit or commit a fallback (depending on whether the current screen should remain). This missing piece is that if you preload a stylesheet you must be able to use that sheets loading state when determining if the stylesheet is already loaded or not. This adds a pending indicator on client inserted prelaod links. We still assume SSR'd preloads are already loaded. DiffTrain build for [d5736f0](d5736f0)
github-actionsBot
pushed a commit
that referenced
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May 7, 2026
Previously stylesheet resources would omit connecting with preloads inserted via `preload` which caused unecessary suspension of commits since the stylsheet resource would attempt to load the stylesheet again and delay the initial commit or commit a fallback (depending on whether the current screen should remain). This missing piece is that if you preload a stylesheet you must be able to use that sheets loading state when determining if the stylesheet is already loaded or not. This adds a pending indicator on client inserted prelaod links. We still assume SSR'd preloads are already loaded. DiffTrain build for [d5736f0](d5736f0)
github-actionsBot
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May 10, 2026
) Previously stylesheet resources would omit connecting with preloads inserted via `preload` which caused unecessary suspension of commits since the stylsheet resource would attempt to load the stylesheet again and delay the initial commit or commit a fallback (depending on whether the current screen should remain). This missing piece is that if you preload a stylesheet you must be able to use that sheets loading state when determining if the stylesheet is already loaded or not. This adds a pending indicator on client inserted prelaod links. We still assume SSR'd preloads are already loaded. DiffTrain build for [d5736f0](react@d5736f0)
github-actionsBot
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that referenced
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May 10, 2026
) Previously stylesheet resources would omit connecting with preloads inserted via `preload` which caused unecessary suspension of commits since the stylsheet resource would attempt to load the stylesheet again and delay the initial commit or commit a fallback (depending on whether the current screen should remain). This missing piece is that if you preload a stylesheet you must be able to use that sheets loading state when determining if the stylesheet is already loaded or not. This adds a pending indicator on client inserted prelaod links. We still assume SSR'd preloads are already loaded. DiffTrain build for [d5736f0](react@d5736f0)
gaojude pushed a commit
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May 13, 2026
[diff react/react@dd453071...d5736f09](react/react@dd45307...d5736f0) <details> <summary>React upstream changes</summary> - react/react#36386 </details> --------- Co-authored-by: next-js-bot[bot] <279046576+next-js-bot[bot]@users.noreply.github.com>
m-kawafuji pushed a commit
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Aug 8, 2026
…#93702) [diff react/react@dd453071...d5736f09](react/react@dd45307...d5736f0) <details> <summary>React upstream changes</summary> - react/react#36386 </details> --------- Co-authored-by: next-js-bot[bot] <279046576+next-js-bot[bot]@users.noreply.github.com>
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Previously stylesheet resources would omit connecting with preloads inserted via
preloadwhich caused unecessary suspension of commits since the stylsheet resource would attempt to load the stylesheet again and delay the initial commit or commit a fallback (depending on whether the current screen should remain). This missing piece is that if you preload a stylesheet you must be able to use that sheets loading state when determining if the stylesheet is already loaded or not.This adds a pending indicator on client inserted prelaod links. We still assume SSR'd preloads are already loaded.