5.15.0

Created Sep 1, 2026Takeshi Takatsudo

Release notes for 5.15.0.

Released: 2026-09-01

Added an accessible language dropdown that scales to every configured locale instead of assuming a two-language site. (607121e9)
Generated locale-owned Claude/Codex resource indexes and Asset Viewer routes for every configured locale, with translated page chrome, locale-preserving links, and safe handling of generated versus authored indexes. (781fb820, 8ceca53e, 44ae7812, 1e558854, 5d682bc1)
Localized all seven HtmlPreview control labels and added per-preview labels, showSource, and showViewportControls overrides while preserving host-provided MDX bindings. (ffee673f, 6538184a)
Added loading="visible" for route-bound HtmlPreview instances, deferring iframe markup, scripts, and external resources until the reserved preview area enters the viewport. (df63d981)
Kept auto-height previews synchronized after delayed content changes and viewport reflows, including both growth and shrink. (df3d4b56)
Added escaped, nonblank language and title metadata to generated preview documents, with explicit author <title> content retaining precedence. (2b8b0ee3, 55e66300)

Retained package English strings when a configured locale supplies only partial translations. (0a3619cb)
Preserved an explicit empty sandbox attribute in generated HTML so strict opaque previews remain sandboxed as authored. (c8b1cac7)
Increased interactive HtmlPreview controls to accessible minimum hit-target dimensions. (a35f1573)

Revision History