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Anthony Lio 6d08a747f1 fix(docs): guide reference perf enhancements (#50239)
## What kind of change does this PR introduce?

follow-up to #50235 to reduce reference page payloads and cold rendering
overhead

## What is the current behavior?

reference pages ship a large rsc payload inside the html _ most of it is
duplication rather than content along with shiki that writes ~30
character css variable name for every syntax token making the page heavy
in some cases

## What is the new behavior?

- moves repeated styles into shared css and uses compact, namespaced
token classes
- renders details icons inside the client trigger
- follows shiki’s guidance to [reuse one
highlighter](https://shiki.style/guide/best-performance#cache-the-highlighter-instance)
and [load languages on
demand](https://shiki.style/guide/best-performance#use-shorthands)

`page size`
page | before | after | change
-- | -- | -- | --
javascript | 10.61 mb | 8.28 mb | -21.9%
dart | 4.59 mb | 4.13 mb | -10.1%
python | 4.38 mb | 3.73 mb | -14.9%
swift | 2.87 mb | 2.56 mb | -10.9%
server | 1.59 mb | 1.35 mb | -15.2%
kotlin | 3.42 mb | 3.17 mb | -7.2%

`cold initialization`
language | before | after | reduction
-- | -- | -- | --
bash | 2,180 ms | 23 ms | 98.95%
javascript | 2,245 ms | 38 ms | 98.29%

## Additional context

measured on a local production build which uses the checked in generated
content _ production has larger sdk data, so absolute sizes there will
be higher

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Added reusable expand/collapse controls for API reference details,
with updated icons, labels, and styling.
* Improved code block rendering with class-based syntax highlighting,
wrapped-code support, responsive layouts, and lazy language loading.

* **Style**
* Added theme-aware syntax-token colors, line-number styling, and
configurable code-block shadows.
  * Consolidated expandable reference panel and item styling.

* **Tests**
* Added coverage for syntax highlighting, code block rendering, language
support, token stability, and reference details.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
2026-09-15 23:55:49 +03:00

20 lines
709 B
CSS

@utility reference-details-trigger {
@apply w-fit rounded-full px-5 py-1 border border-default;
@apply flex items-center gap-2 text-left text-sm text-foreground-light;
@apply hover:bg-surface-100;
@apply data-open:w-full data-open:rounded-b-none data-open:rounded-tl-lg data-open:rounded-tr-lg;
@apply transition [transition-property:width,background-color];
}
@utility reference-details-trigger-icon {
@apply text-foreground-muted group-data-closed:rotate-45 transition-transform;
}
@utility reference-details-panel {
@apply border-b border-x border-default rounded-b-lg;
}
@utility reference-details-item {
@apply px-5 py-3 border-t border-default first:border-t-0 flex flex-col gap-3;
}