@remix-run/ui

Check the user's current motion preference with prefersReducedMotion() from @remix-run/ui/animation. It returns false during server rendering or when matchMedia is unavailable, so it can be called safely from component render functions as well as browser event handlers.

Server rendering skips setup and render for animation mixins, keyboard and outside-click helpers, typeahead behavior, and popover anchor and focus helpers. Mixins that provide initial attributes, styles, or ARIA props still run on the server.

Bumped @remix-run/* dependencies:

Preserve client-owned attributes during frame reloads with data-rmx-preserve-attrs="class data-theme" on any matched element, including <html> and <body> (see #11809). The named attributes keep their live values or absence while other attributes and children reconcile normally. The incoming HTML controls the list; clearing it or removing a name returns those attributes to normal reconciliation.

Allow client entry props to use ordinary interfaces, including nested objects whose properties are all optional (see #11918).

Send X-Remix-Frame: true from the default browser resolver for all frame loads, including top-frame navigation and reloads. Named frames also send X-Remix-Target, allowing handlers to identify and target frame requests consistently across browser and server rendering (see #11941).

Treat marker-less HTML that starts with a doctype or <html> as a document reload, so pages rendered with renderToString can be navigated by the client runtime (see #11808).

Ignore invalid host prop names and reserved DOM mutation properties during server rendering and client reconciliation. Block javascript: URLs in executable URL attributes while preserving other URL schemes and non-executable attributes. Use the on() mixin for events; the explicit innerHTML API and standard DOM, data-*, aria-*, SVG, and custom-element properties continue to work as before.

Fix duplicated text during hydration when a browser splits long server-rendered text into multiple DOM nodes, including chunks that span adjacent text children (see #11591).

Avoid attaching duplicate event handlers when a client entry imports and renders another client entry, including through fragments and wrapper components. Preserve deferred removal and exit animations when removing nested client entries (see #11844).

Restore the previous named frame from handle.frames.get(name) when a more recently mounted frame with the same name unmounts.

Client entries can now provide import maps through resolveClientEntry(). The <ImportMap> component from remix/ui/server combines your mappings with those from blocking client entries so the initial document contains one complete import map. New mappings from later frame responses are installed before their client entries load. Plain <script type="importmap"> elements remain supported when you do not need to combine mappings (see #11706).

run() now accepts a processClientEntryPreloads callback to handle preloads for client entries discovered after the initial page load. Use it with remix/multiple-import-maps-polyfill to preload modules in browsers that need the polyfill, returning an empty array to skip native modulepreload links. See the client entry setup example (see #11706).

handle.update() now warns and skips the extra render when called during component setup. Calls during rendering, or before the initial commit from outside setup, report a clear component error. Move these updates into an event handler or a handle.queueTask() callback (see #11795).

Fixed delayed scroll resets and history scroll restoration during frame navigation. Scroll now updates once the destination and its blocking frames first render, without waiting for the rest of the streamed content or client entry hydration. Also fixed scroll jumps in Chromium and stale or repeated scroll changes during redirects and overlapping reloads (see #11755).

Browsers without NavigateEvent.sourceElement support now use full document navigation, so links and forms keep working when frame navigation is unavailable (see #11820).

Frames now render HTML responses with 3xx and 4xx status codes, so form validation messages and error pages appear in the frame when using the default resolver. HTML content types are now recognized regardless of case (see #11823).

Added a browser-only SPA response protocol to remix/ui for associating bodyless route responses with Remix UI nodes. Application code uses the higher-level render() and run() APIs from remix/spa.

Prevent aborted renderToStream requests with multiple blocking Frames from producing unhandled promise rejections that can crash Node servers.

Changed the scheduler's cascading update guard to warn when many component updates happen in one event-loop turn and only throw the infinite-loop error when a single component instance repeatedly updates itself. This keeps large clientEntry hydration bursts interactive while still surfacing component names and counts for diagnosis.

Fixed mix prop types to accept argument-bearing mixins authored for a base element type on compatible subtype elements.