[Fiber] track stylesheet preloads when explicitly preloaded#36386
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gnoff merged 2 commits intofacebook:mainfrom May 7, 2026
Merged
[Fiber] track stylesheet preloads when explicitly preloaded#36386gnoff merged 2 commits intofacebook:mainfrom
gnoff merged 2 commits intofacebook:mainfrom
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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.
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eps1lon
reviewed
May 4, 2026
…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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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-actions Bot
pushed a commit
that referenced
this pull request
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)
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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.