Biome 2.5.9

2.5.9

Biome CLI v2.5.9

Added 3
  • Added a new nursery rule useNamedLayer which disallows anonymous cascade layers
  • Added the nursery rule useTailwindShorthandClasses, which suggests shorter Tailwind utility classes
  • Added the nursery rule useAstroClientOnlyDirectiveValue, which reports Astro client:only directives without an initializer
Changed 2
  • Expanded the environment variable metadata used by biome rage to include BIOME_BINARY, BIOME_LOG_FILE, and RUST_BACKTRACE
  • The HTML formatter now preserves meaningful blank lines in HTML, including spacing after elements with trailing spaces and blank lines between comment groups
Fixed 7
  • The CSS parser now recovers at declaration boundaries after bogus declarations, allowing subsequent valid declarations to be parsed
  • The lint/nursery/useExpect rule now recognizes Vitest Browser Mode expect.element() calls as assertions
  • The CSS parser now accepts Tailwind container-query variant names in @variant, such as @xl and @max-xl
  • The noUndeclaredVariables, noUnusedImports, and noUnusedVariables rules now correctly recognise exported variables and functions declared in one embedded script block as usable from a sibling script block in Svelte and Vue components
  • Fixed the HTML formatter's whitespace handling for marquee, noscript, video, audio, and object elements
  • The useGenericFontNames rule now treats math as a valid generic font family
  • The noComponentHookFactories rule now reports a use-prefixed variable only when a function is assigned to it directly

From Biome

2.5.9
Patch Changes

  • #11321 41386f3 Thanks @dyc3! - Fixed #11315: The CSS parser now recovers at declaration boundaries after bogus declarations, allowing subsequent valid declarations to be parsed.

  • #11248 57b197e Thanks @yanthomasdev! - Expanded the environment variable metadata used by biome rage to include BIOME_BINARY, BIOME_LOG_FILE, and RUST_BACKTRACE as well as reworded explanations for better readability.

  • #11377 a8798ea Thanks @Netail! - Added a new nursery rule useNamedLayer which disallows anonymous cascade layers.

    @layer {
  a {
    color: red;
  }
}

  • #11327 6771cf5 Thanks @dyc3! - The HTML formatter now preserves meaningful blank lines in HTML, including spacing after elements with trailing spaces and blank lines between comment groups.

     <div>
   <!-- first group -->
+
   <!-- second group -->
 </div>

  • #10312 ba8aa18 Thanks @dyc3! - Added the nursery rule useTailwindShorthandClasses, which suggests shorter Tailwind utility classes. For example, the rule suggests replacing w-4 h-4 with size-4.

  • #11333 715e0cd Thanks @kkkhs! - Fixed #11328: lint/nursery/useExpect now recognizes Vitest Browser Mode expect.element() calls as assertions.

  • #11343 9b98211 Thanks @johncarmack1984! - Fixed #11311: the CSS parser now accepts Tailwind container-query variant names in @variant, such as @xl and @max-xl. These previously produced a parse error and a noUnknownAtRules diagnostic.

    @variant @xl {
  div {
    background: red;
  }
}

  • #11220 3e8c488 Thanks @santichausis! - Fixed #9541: noUndeclaredVariables, noUnusedImports, and noUnusedVariables now correctly recognise exported variables and functions declared in one embedded <script> block as usable from a sibling <script> block, in Svelte's <script module>/<script> pair and Vue's non-setup <script> blocks.

    For example, Biome no longer reports greet as undeclared in the following Svelte component:

    <script module>
  export function greet() {
    console.log("Hello!");
  }
</script>

<script>
  greet();
</script>

  • #11300 36430eb Thanks @dyc3! - Fixed the HTML formatter's whitespace handling for marquee, noscript, video, audio, and object elements.

    - <marquee behavior="alternate"> This text will bounce </marquee>
+ <marquee behavior="alternate">This text will bounce</marquee>

  • #11299 6559e6c Thanks @jp-knj! - Added the nursery rule useAstroClientOnlyDirectiveValue, which reports Astro client:only directives without an initializer.

    For example, <Component client:only /> triggers the rule.

  • #11365 7529811 Thanks @MHJahanbakhsh! - Fixed #11229: The useGenericFontNames rule now treats math as a valid generic font family.

  • #11346 674f5f4 Thanks @Jayllyz! - Fixed #11335: noComponentHookFactories now reports a use-prefixed variable only when a function is assigned to it directly.

    function factory() {
  const useColors = true; // no longer reported
  const useStore = createStore({ count: 0 }); // no longer reported
  const useData = () => useState(null); // still reported
  return useColors;
}

  • #11334 c87c46a Thanks @zkasuran! - Fixed #11317: noSvgWithoutTitle no longer reports an svg that uses the boolean shorthand aria-hidden (equivalent to aria-hidden={true} in React).

  • #11364 13853b1 Thanks @ematipico! - Fixed a bug where useJsxKeyInIterable incorrectly flagged Astro files.

  • #11321 41386f3 Thanks @dyc3! - Fixed #11315: Invalid CSS declarations in HTML style attributes now produce parser diagnostics instead of causing a panic.

  • #11325 67c3bf0 Thanks @dyc3! - Fixed HTML text wrapping to account for the width of an adjacent closing tag, avoiding lines that exceed the configured width when the final word and tag must move together.

     <a-long-long-long-element
-  >foo bar foo bar foo bar foo bar foo bar foo bar foo bar</a-long-long-long-element
+  >foo bar foo bar foo bar foo bar foo bar foo
+  bar</a-long-long-long-element
 >

  • #11367 fe5b5d4 Thanks @ematipico! - Fixed TypeScript compilerOptions.paths resolution when mapping targets omit ./. Biome now resolves these targets relative to their configured path base.

  • #11316 17e48d6 Thanks @wanxiankai! - Fixed #11289: the safe fix for noExtraBooleanCast now preserves parentheses around nested conditional expressions.

  • #11254 d25d113 Thanks @dyc3! - Fixed #11242: Biome no longer crashes with an access violation when analysing files on Windows ARM64.

  • #11221 85aac73 Thanks @freeatnet! - Added the nursery rule noUnsafeTypeAssertion, which disallows TypeScript type assertions while allowing const assertions.

    const value = input as SomeType;

  • #11314 7ffb677 Thanks @ematipico! - Fixed #11310: Restored the performance of noMisusedPromises and noFloatingPromises when analyzed expressions share deep imported type paths.

  • #11356 6cd3263 Thanks @johncarmack1984! - The Tailwind parser now understands modifiers on bare utilities (@container/sidebar, shadow/50).

  • #11318 76059e9 Thanks @johncarmack1984! - The Tailwind parser now understands container-query variants (@sm:, @max-lg:, @min-[400px]:) and child and descendant variants (*:, **:).

  • #11357 faa2074 Thanks @johncarmack1984! - The Tailwind parser now accepts the legacy leading ! important marker (!flex, hover:!p-4).

  • #11344 f34e15c Thanks @johncarmack1984! - The Tailwind parser now understands combinator selectors in arbitrary variants (has-[>svg]:, has-[+p]:), modifiers on variants (group-hover/menu:, @sm/main:), and arbitrary container-query sizes (@[400px]:).

  • #11324 2f5d452 Thanks @dyc3! - Fixed HTML formatting that inserted rendered whitespace between an element and touching text when the line wrapped.

      <div>
-   before<meter value=".5"></meter>
-   after
+   before<meter value=".5"></meter
+   >after
  </div>

  • #11312 e65f07e Thanks @xosnos! - Added a new nursery rule useControlLabel for both HTML and JSX, which reports interactive control elements (button, menuitem) without an accessible label.

    <button />

  • #11364 13853b1 Thanks @ematipico! - Fixed SVG parsing for files with an XML declaration followed by a PUBLIC doctype, such as <?xml version="1.0"?><!DOCTYPE svg PUBLIC "a" "b">.

  • #11301 610ee28 Thanks @dyc3! - Fixed parent tag wrapping when an HTML element starts or ends with a block-like or hidden child such as source, track, or param.

    - <video src="brave.webm"><track kind="subtitles" src="brave.en.vtt"></video>
+ <video src="brave.webm">
+   <track kind="subtitles" src="brave.en.vtt">
+ </video>
What's Changed
New Contributors

Full Changelog: https://github.com/biomejs/biome/compare/@biomejs/biome@2.5.8...@biomejs/biome@2.5.9

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