#4252 40a2584 Thanks @olafur-andri! - Adds Icelandic language support

#4229 e4a3d82 Thanks @HiDeoo! - Fixes a potential issue with icons being cut off in Firefox when pinch-zooming.

#4226 fb562dd Thanks @HiDeoo! - Fixes an issue where pages not importing components from @astrojs/starlight/components included styles of Starlight components used on other pages.

#4250 531af7d Thanks @HiDeoo! - Fixes Failed to resolve dependency warnings logged when running the development server in projects using the Cloudflare adapter.

#4229 e4a3d82 Thanks @HiDeoo! - Fixes the codePen and node icons slightly extending beyond their bounding box.

#4149 fa10e87 Thanks @ematipico! - Optimizes rendering of large nested sidebars

#4215 f791de6 Thanks @HiDeoo! - Adds a new seti:coffee icon for CoffeeScript files in the <FileTree> component.

#4215 f791de6 Thanks @HiDeoo! - Fixes <FileTree> icons for .ejs and npm-debug.log files displaying the default file icon.

#3572 292fb17 Thanks @HiDeoo! - Distributes package as JavaScript files with dedicated type declaration files instead of TypeScript source files.

#4121 2623ae6 Thanks @delucis! - Simplifies markup for Starlight’s mobile menu toggle

⚠️ Potentially breaking change: If you use a theme plugin, custom styles, or component overrides targeting the MobileMenuToggle button or PageFrame components, you may need to adjust these for the new markup. The button is no longer wrapped in a <starlight-menu-button> custom element and no longer uses the aria-expanded attribute. Instead, you can use the .sl-menu-button class name to target the button and the :popover-open pseudo-class to style the menu open state specifically.

In the following example, custom styles for the menu button are updated for the new approach:

- starlight-menu-button button {
+ .sl-menu-button {
  color: var(--sl-color-text);
}

- starlight-menu-button[aria-expanded='true'] button {
+ .sl-menu-button:has(~ :popover-open) {
  color: var(--sl-color-text-accent-high);
}

See MobileMenuToggle.astro and PageFrame.astro on GitHub for the full source code of the updated components.

#3572 292fb17 Thanks @HiDeoo! - Removes the tagline configuration option, which was never used.

If your configuration included a tagline option, you can safely remove it without any replacement.

#4134 6135f01 Thanks @HiDeoo! - Updates internal @astrojs/mdx, @astrojs/markdown-satteri, and satteri dependencies.

⚠️ BREAKING CHANGE: The following minimum versions are now required:

• astro v7.2.10 or later
• @astrojs/markdown-satteri 0.4.0 or later (if you use it)
• @astrojs/markdown-remark 7.3.0 or later (if you use it)

Please update Starlight and Astro together:

npx @astrojs/upgrade

#4121 2623ae6 Thanks @delucis! - Refactors Starlight’s mobile menu toggle to work when JavaScript fails or is disabled

⚠️ BREAKING CHANGE: This release drops official support for Chromium-based browsers prior to version 116 (released August 2023), Safari-based browsers prior to version 17.0 (released September 2023), and Firefox prior to version 125 (released April 2024). You can find a list of currently supported browsers and their versions using this browserslist query.

This change also removes the data-mobile-menu-expanded attribute, which was previously added to <body> while the mobile menu is open. If you have custom code that was depending on this attribute, you will need to update it to use a new selector to check if the mobile menu is open.

In the following example, a custom background colour for the site header while the menu is open is updated for the new approach:

- [data-mobile-menu-expanded] header {
+ body:has(sl-sidebar-pane:popover-open) header {
  background-color: var(--sl-color-bg);
}

#4167 32a5e29 Thanks @HiDeoo! - Fixes a layout issue and anchor links appearing for hidden headings, e.g. footnote headings, when markdown.headingLinks is enabled or the <AnchorHeading> component is used.

#4148 cdfafd8 Thanks @ematipico! - Optimizes sidebar data generation logic to speed up sites with large sidebars

#4160 88442c3 Thanks @ArmandPhilippot! - Adds the missing translations for Expressive Code in the following locales: ar, hi, it, ja, ko, pt, zh-CN, and zh-TW.

#4156 57af92d Thanks @pyxelr! - Adds 1 new icon: hypothesis

#4159 a0e0ba2 Thanks @trueberryless! - Adds 1 new icon: npmx