#79894855c4a Thanks@alissonlauffer! - Fixed a regression in Astro frontmatter parsing where comments inside quoted strings were incorrectly detected as actual comments. This caused the parser to prematurely terminate frontmatter parsing when encountering strings likeconst test = "//";.
For example, the following Astro frontmatter now parses correctly:
---const test="// not a real comment";---
#79680b28f5f Thanks@denbezrukov! - Refactored formatter to use strictToken element for better performance. The newToken variant is optimized for static, ASCII-only text (keywords, operators, punctuation) with the following constraints:
- ASCII only (no Unicode characters)
- No newlines (
\n,\r) - No tab characters (
\t)
This enables faster printing and fitting logic by using bulk string operations (push_str,len()) instead of character-by-character iteration with Unicode width calculations.
#794119b8280 Thanks@Conaclos! - Fixed#7943. Rules'options are now properly merged with the inheritedoptions from a shared configuration.
This means that you can now override a specific option from a rule without resetting the other options to their default.
Given the following shared configuration:
{"linter": {"rules": {"style": {"useNamingConvention": {"level":"on","options": {"strictCase":false,"conventions": [ {"selector": {"kind":"variable","scope":"global" },"formats": ["CONSTANT_CASE"] } ] } } } } }}And the user configuration that extends this shared configuration:
{"extends": ["shared.json"],"linter": {"rules": {"style": {"useNamingConvention": {"level":"on","options": {"strictCase":true } } } } }}The obtained merged configuration is now as follows:
{"extends": ["shared.json"],"linter": {"rules": {"style": {"useNamingConvention": {"level":"on","options": {"strictCase":true,"conventions": [ {"selector": {"kind":"variable","scope":"global" },"formats": ["CONSTANT_CASE"] } ] } } } } }}#7969425963d Thanks@ematipico! - Added support for the Svelte syntax{@​debug}. The Biome HTML parser is now able to parse and format the blocks:
-{@​debug foo,bar, something}+{@​debug foo, bar, something}#79863256f82 Thanks@lisiur! - Fixed#7981. Now Biome correctly detects and parseslang='tsx' andlang='jsx' languages when used inside in.vue files, when.experimentalFullSupportEnabled is enabled.
#7921547c2da Thanks@dyc3! - Fixed#7854: The CSS parser, withtailwindDirectives enabled, will now parse@source inline("underline");.
#7856c9e20c3 Thanks@Netail! - Added the nursery rulenoContinue. Disallowing the usage of thecontinue statement, structured control flow statements such asif should be used instead.
Invalid:
letsum=0,i;for(i=0;i<10;i++){if(i>=5){continue;}sum+=i;}Valid:
letsum=0,i;for(i=0;i<10;i++){if(i<5){sum+=i;}}
#7859c600618 Thanks@Netail! - Added the nursery rulenoIncrementDecrement, disallows the usage of the unary operators ++ and --.
#79010d17b05 Thanks@ematipico! - Fixed#7837, where Biome couldn't properly parse text expressions that contained nested curly brackets. This was breaking parsing in Astro and Svelte files.
#7874e617d36 Thanks@Bertie690! - Fixed#7230:noUselessStringConcat no longer emits false positives for multi-line strings with leading+ operators.
Previously, the rule did not check for leading newlines on the+ operator, emitting false positives if one occurred at the start of a line.
Notably, formatting withoperatorLinebreak="before" would move the+ operators to the start of lines automatically, resulting in spurious errors whenever a multi-line string was used.
Now, the rule correctly detects and ignores multi-line concatenations with leading operators as well, working regardless of the setting ofoperatorLinebreak.
Example
// The following code used to error if the `+` operators were at the start of lines (as opposed to the end).// Now, the rule correctly recognizes this as a stylistic concatenation and ignores it.constreallyLongStringThatShouldNotError="Lorem ipsum dolor sit amet consectetur adipiscing elit."+"Quisque faucibus ex sapien vitae pellentesque sem placerat."+"In id cursus mi pretium tellus duis convallis."+"Tempus leo eu aenean sed diam urna tempor. Pulvinar vivamus fringilla";
#778633ffcd5 Thanks@daivinhtran! - Fixed#7601: Properly match Grit plugin's code snippet with only one child.
#79010d17b05 Thanks@ematipico! - Fixed#7837, where Biome Language Server panicked when opening HTML-ish files when the experimental full support is enabled.
#784072afdfa Thanks@ematipico! - Fixed#7838, which caused the new--css-parse-* arguments not being recognised by theci command.
#7789d5b416e Thanks@fronterior! - Fixed the LSP methodworkspace/didChangeWorkspaceFolders to perform incremental updates instead of replacing the entire folder list.
#7852bd254c7 Thanks@dyc3! - Fixed#7843: The CSS parser, whentailwindDirectives is enabled, correctly parses--*: initial;.
#78720fe13fe Thanks@dyc3! - Fixed#7861: The HTML parser will now accept Svelte attribute shorthand syntax in.svelte files.
#78667b2600b Thanks@dyc3! - Fixed#7860: The css parser, withtailwindDirectives enabled, will now accept@plugin options.
#7853fe90c78 Thanks@dyc3! - Fixed#7848: The css parser withtailwindDirectives enabled will now correctly parse tailwind's source exclude syntax:@source not "foo.css";
#7878c9f7fe5 Thanks@ematipico! - Fixed#7857: Biome now parses<script> tags as TypeScript when analysing.astro files.
#7867b42b718 Thanks@smorimoto! - Fixed incorrect option name in HTML parser error message.
The error message for disabled text expressions incorrectly referred
to thehtml.parser.textExpression option, which does not exist.
Updated it to reference the correcthtml.parser.interpolation option.
#77456fcbc07 Thanks@dyc3! - Addedignore option tonoUnknownAtRules. If an unknown at-rule matches any of the items provided inignore, a diagnostic won't be emitted.
#775363cb7ff Thanks@ematipico! - Enhanced theinit command. Theinit command now checks if the existing project contains known ignore files and known generated folders.
If Biome finds.gitignore or.ignore files, it will add the following configuration tobiome.json:
{+ "vcs": {+ "enabled": true,+ "clientKind": "git",+ "useIgnoreFile": true+ }}If Biome finds adist/ folder, it will exclude it automatically using the double-exclude syntax:
{+ "files": {+ "includes": ["**", "!!**/dist"]+ }}#754885d3a3a Thanks@siketyan! - The rules in a domain are no longer enabled automatically by the installed dependencies unless the rule is recommended.
#7723d3aac63 Thanks@ematipico! - Added--css-parse-css-modules CLI flag to control whether CSS Modules syntax is enabled.
You can now enable or disable CSS Modules parsing directly from the command line:
biome check --css-parse-css-modules=true file.module.cssbiome format --css-parse-css-modules=true file.module.cssbiome lint --css-parse-css-modules=true file.module.cssbiome ci --css-parse-css-modules=true file.module.css
#7723d3aac63 Thanks@ematipico! - Added--css-parse-tailwind-directives CLI flag to control whether Tailwind CSS 4.0 directives and functions are enabled.
You can now enable or disable Tailwind CSS 4.0 directive parsing directly from the command line:
biome check --css-parse-tailwind-directives=true file.cssbiome format --css-parse-tailwind-directives=true file.cssbiome lint --css-parse-tailwind-directives=true file.cssbiome ci --css-parse-tailwind-directives=true file.css
#7330272632f Thanks@ematipico! - Updated the formatting of.svelte and.vue files. Now the indentation of the JavaScript blocks matches Prettier's:
<script>- import Component from "./Component"+ import Component from "./Component"</script>
#7333de0d2d6 Thanks@dyc3! - Implemented theindentScriptAndStyle option for vue and svelte files, with the default set tofalse to matchPrettier'svueIndentScriptAndStyle option. When enabled, this option indents the content within<script> and<style> tags to align with the surrounding HTML structure.
It can be enabled with this configuration:
{"html": {"formatter": {"indentScriptAndStyle":true } }}Which will format this code to:
<script>importComponentfrom"./Component.vue";</script>
#7359ebbddc4 Thanks@arendjr! - Deprecated the optionfiles.experimentalScannerIgnores in favour offorce-ignore syntax infiles.includes.
files.includes supports ignoring files by prefixing globs with an exclamation mark (!). With this change, it also supportsforce-ignoring globs by prefixing them with a double exclamation mark (!!).
The effect of force-ignoring is that the scanner will not index files matching the glob, even in project mode, even if those files are imported by other files, and even if they are files that receive special treatment by Biome, such as nestedbiome.json files.
{"files": {"includes": ["**","!**/generated","!!**/dist","fixtures/example/dist/*.js" ] },"linter": {"domains": {"project":"all" } }}In general, we now recommend using the force-ignore syntax for any folders that containoutput files, such asbuild/ anddist/. For such folders, it is highly unlikely that indexing has any useful benefits. For folders containing generated files, you may wish to use the regular ignore syntax so that type information can still be extracted from the files.
#7723d3aac63 Thanks@ematipico! - Added--json-parse-allow-comments CLI flag to control whether comments are allowed in JSON files.
You can now enable or disable comment parsing in JSON files directly from the command line:
biome check --json-parse-allow-comments=true file.jsonbiome format --json-parse-allow-comments=true file.jsonbiome lint --json-parse-allow-comments=true file.jsonbiome ci --json-parse-allow-comments=true file.json
#7723d3aac63 Thanks@ematipico! - Added--json-parse-allow-trailing-commas CLI flag to control whether trailing commas are allowed in JSON files.
You can now enable or disable trailing comma parsing in JSON files directly from the command line:
biome check --json-parse-allow-trailing-commas=true file.jsonbiome format --json-parse-allow-trailing-commas=true file.jsonbiome lint --json-parse-allow-trailing-commas=true file.jsonbiome ci --json-parse-allow-trailing-commas=true file.json
#7758cea002f Thanks@ematipico! - Promoted new lint rules:
- Promoted
noNonNullAssertedOptionalChain to the suspicious group - Promoted
useReactFunctionComponents to thestyle group - Promoted
useImageSize to thecorrectness group - Promoted
useConsistentTypeDefinitions to thestyle group - Promoted
useQwikClasslist to thecorrectness group - Promoted
noSecrets to thesecurity group
Removed the lint ruleuseAnchorHref, because its use case is covered byuseValidAnchor.
#6356296627d Thanks@wrick17! - Added the newcheckstyle reporter. When--reporter=checkstyle is passed to the CLI, Biome will emit diagnostics forCheckstyle format:
<?xml version="1.0" encoding="utf-8"?><checkstyleversion="4.3"> <filename="index.ts"> <errorline="1"column="8"severity="warning"message="This import is unused."source="lint/correctness/noUnusedImports" /> <errorline="2"column="10"severity="warning"message="Several of these imports are unused."source="lint/correctness/noUnusedImports" /> <errorline="8"column="5"severity="warning"message="This variable f is unused."source="lint/correctness/noUnusedVariables" /> <errorline="9"column="7"severity="warning"message="This variable f is unused."source="lint/correctness/noUnusedVariables" /> <errorline="1"column="1"severity="error"message="The imports and exports are not sorted."source="assist/source/organizeImports" /> <errorline="4"column="3"severity="error"message="Using == may be unsafe if you are relying on type coercion."source="lint/suspicious/noDoubleEquals" /> <errorline="6"column="1"severity="error"message="This is an unexpected use of the debugger statement."source="lint/suspicious/noDebugger" /> <errorline="8"column="5"severity="error"message="This variable implicitly has the any type."source="lint/suspicious/noImplicitAnyLet" /> <errorline="9"column="7"severity="error"message="This variable implicitly has the any type."source="lint/suspicious/noImplicitAnyLet" /> <errorline="2"column="10"severity="error"message="Shouldn't redeclare'z'. Consider to delete it or rename it."source="lint/suspicious/noRedeclare" /> <errorline="9"column="7"severity="error"message="Shouldn't redeclare'f'. Consider to delete it or rename it."source="lint/suspicious/noRedeclare" /> <errorline="0"column="0"severity="error"message="Formatter would have printed the following content:"source="format" /> </file> <filename="main.ts"> <errorline="1"column="8"severity="warning"message="This import is unused."source="lint/correctness/noUnusedImports" /> <errorline="2"column="10"severity="warning"message="Several of these imports are unused."source="lint/correctness/noUnusedImports" /> <errorline="8"column="5"severity="warning"message="This variable f is unused."source="lint/correctness/noUnusedVariables" /> <errorline="9"column="7"severity="warning"message="This variable f is unused."source="lint/correctness/noUnusedVariables" /> <errorline="1"column="1"severity="error"message="The imports and exports are not sorted."source="assist/source/organizeImports" /> <errorline="4"column="3"severity="error"message="Using == may be unsafe if you are relying on type coercion."source="lint/suspicious/noDoubleEquals" /> <errorline="6"column="1"severity="error"message="This is an unexpected use of the debugger statement."source="lint/suspicious/noDebugger" /> <errorline="8"column="5"severity="error"message="This variable implicitly has the any type."source="lint/suspicious/noImplicitAnyLet" /> <errorline="9"column="7"severity="error"message="This variable implicitly has the any type."source="lint/suspicious/noImplicitAnyLet" /> <errorline="2"column="10"severity="error"message="Shouldn't redeclare'z'. Consider to delete it or rename it."source="lint/suspicious/noRedeclare" /> <errorline="9"column="7"severity="error"message="Shouldn't redeclare'f'. Consider to delete it or rename it."source="lint/suspicious/noRedeclare" /> <errorline="0"column="0"severity="error"message="Formatter would have printed the following content:"source="format" /> </file></checkstyle>
#7488b13e524 Thanks@kpapa05! - Added "@rbxts/react" as an alias for "react" for handling the reactClassic jsxRuntime.
#75360bccd34 Thanks@TheAlexLichter! - Added.oxlintrc.json to well-known files.
#754885d3a3a Thanks@siketyan! - The following rules are now a part of thereact domain, and they won't be enabled automatically unless you enabled the domain, or Biome detectsreact as a dependency of your closestpackage.json:
#7667480909a Thanks@ematipico! - Added the ability to show severityInformation diagnostics in reporter outputs.
If one or more rules are triggered, and they are configured to emit anInformation diagnostic, now they're counted in the final output:
Checked 1 filein<TIME>. No fixes applied.Found 1 info.
#770228e8860 Thanks@ematipico! - Added linting and assist support for.html files, with addition of two new configurations:
html.linter.enabledhtml.assist.enabled
The HTML linter, in this release, only contains the rulenoHeaderScope. More rules will be released in the upcoming releases.
#7164f66b0c5 Thanks@dyc3! - Added a new CSS parser optiontailwindDirectives. Enabling this option will allow all of Tailwind v4's syntax additions to be parsed and formatted by Biome.
You can enable this by settingcss.parser.tailwindDirectives totrue in your Biome configuration.
{"css": {"parser": {"tailwindDirectives":true } }}#76696ed4d16 Thanks@barklund! - React 19.2 support is now supported in Biome:
#770228e8860 Thanks@ematipico! - Addedexperimental full support for HTML, Vue, Svelte and Astro files. In this release, the HTML parser
has been enhanced, and it's now able to parse.vue,.svelte and.astro files.
This means that now Biome is able to lint and format the JavaScript (TypeScript), HTML and CSS code that is contained in these files.
Now that the main architecture is stable and working, in the upcoming patches and minors we will also fix possible inaccuracies and edge cases coming from existing lint rules, such asnoUnusedVariables inside<script> blocks or frontmatter.
The support is considered experimental because there might be cases that aren't fine-parsed yet, hence causing possible inaccuracies when it comes to formatting and linting.
#759909445c8 Thanks@anaisbetts! - #### lineEnding has a new optionauto
The optionlineEnding now has a variant calledauto to match the operating system's expected
line-ending style: on Windows, this will be CRLF (\r\n), and on macOS / Linux, this will
be LF (\n).
This allows for cross-platform projects that use Biome not to have to
force one option or the other, which aligns better with Git's default behavior
on these platforms.
Example usage:
{"formatter": {"lineEnding":"auto" }}biome format --line-ending auto
#7392e4feb8e Thanks@ematipico! - Added new capabilities to the CLI arguments--skip and--only, available to thebiome lint command.
--skip and--only can now accept domain names; when provided, Biome will run or skip all the rules that belong to a certain domain.
For example, the following command will only run the rules that belong to thenext domain:
Another example, the following command will skip the rules that belong to theproject domain:
biome lint --skip=project
#770228e8860 Thanks@ematipico! - Added a new option calledhtml.interpolation. This option enables the parsing of text expressions (or interpolation) in HTML files.
The followingfile.html will be correctly formatted:
<!-- file.html --><div> Hello {{ name }}!<p>Your balance is: {{ account.balance }}</p><button>{{ isLoading ? "Loading..." : "Submit" }}</button></div>To note thathtml.interpolation only parses text expressions that are delimited by double curly braces ({{ }}). The content of expressions is parsed as normal text.
#7071a8e7301 Thanks@ptkagori! - Added theuseQwikValidLexicalScope rule to the Qwik domain.
This rule helps you avoid common bugs in Qwik components by checking that your variables and functions are declared in the correct place.
Invalid:
// Invalid: state defined outside the component's lexical scope.letstate=useStore({count:0});constComponent=component$(()=>{return(<buttononClick$={()=>state.count++}>Invalid:{state.count}</button>);});Valid:
// Valid: state initialised within the component's lexical scope and captured by the event.constComponent=component$(()=>{conststate=useStore({count:0});return<buttononClick$={()=>state.count++}>Valid:{state.count}</button>;});#76205beb1ee Thanks@Netail! - Added the ruleuseDeprecatedDate, which makes a deprecation date required for the graphql@deprecated directive.
Invalid
query {member @​deprecated(reason: "Use `members` instead") {id }}Valid
query {member @​deprecated(reason: "Use `members` instead", deletionDate: "2099-12-25") {id }}#7709d6da4d5 Thanks@siketyan! - Fixed#7704: TheuseExhaustiveDependencies rule now correctly adds an object dependency when its method is called within the closure.
For example:
functionComponent(props){useEffect(()=>{props.foo();},[]);}will now be fixed to:
functionComponent(props){useEffect(()=>{props.foo();},[props]);}#7624309ae41 Thanks@lucasweng! - Fixed#7595:noUselessEscapeInString no longer reports$\{ escape in template literals.
#766529e4229 Thanks@ryan-m-walker! - Fixed#7619: Added support for parsing the CSS:state() pseudo-class.
custom-selector:state(checked) {}#760841df59b Thanks@ritoban23! - Fixed#7604: theuseMaxParams rule now highlights parameter lists instead of entire function bodies. This provides more precise error highlighting. Previously, the entire function was highlighted; now only the parameter list is highlighted, such as(a, b, c, d, e, f, g, h).
#7643459a6ac Thanks@daivinhtran! - Fixed#7580: Include plugin in summary report
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This PR contains the following updates:
^2.1.4->^2.3.4^1.54.2->^1.56.1^1.4.15->^1.6.2^0.11.2->^0.17.1^22.17.1->^22.19.0^1.54.2->^1.56.110->10.20.0^5.9.2->^5.9.3Release Notes
biomejs/biome (@biomejs/biome)
v2.3.4Compare Source
Patch Changes
#7989
4855c4aThanks@alissonlauffer! - Fixed a regression in Astro frontmatter parsing where comments inside quoted strings were incorrectly detected as actual comments. This caused the parser to prematurely terminate frontmatter parsing when encountering strings likeconst test = "//";.For example, the following Astro frontmatter now parses correctly:
#7968
0b28f5fThanks@denbezrukov! - Refactored formatter to use strictTokenelement for better performance. The newTokenvariant is optimized for static, ASCII-only text (keywords, operators, punctuation) with the following constraints:\n,\r)\t)This enables faster printing and fitting logic by using bulk string operations (
push_str,len()) instead of character-by-character iteration with Unicode width calculations.#7941
19b8280Thanks@Conaclos! - Fixed#7943. Rules'optionsare now properly merged with the inheritedoptionsfrom a shared configuration.This means that you can now override a specific option from a rule without resetting the other options to their default.
Given the following shared configuration:
{"linter": {"rules": {"style": {"useNamingConvention": {"level":"on","options": {"strictCase":false,"conventions": [ {"selector": {"kind":"variable","scope":"global" },"formats": ["CONSTANT_CASE"] } ] } } } } }}And the user configuration that extends this shared configuration:
{"extends": ["shared.json"],"linter": {"rules": {"style": {"useNamingConvention": {"level":"on","options": {"strictCase":true } } } } }}The obtained merged configuration is now as follows:
{"extends": ["shared.json"],"linter": {"rules": {"style": {"useNamingConvention": {"level":"on","options": {"strictCase":true,"conventions": [ {"selector": {"kind":"variable","scope":"global" },"formats": ["CONSTANT_CASE"] } ] } } } } }}#7969
425963dThanks@ematipico! - Added support for the Svelte syntax{@​debug}. The Biome HTML parser is now able to parse and format the blocks:#7986
3256f82Thanks@lisiur! - Fixed#7981. Now Biome correctly detects and parseslang='tsx'andlang='jsx'languages when used inside in.vuefiles, when.experimentalFullSupportEnabledis enabled.#7921
547c2daThanks@dyc3! - Fixed#7854: The CSS parser, withtailwindDirectivesenabled, will now parse@source inline("underline");.#7856
c9e20c3Thanks@Netail! - Added the nursery rulenoContinue. Disallowing the usage of thecontinuestatement, structured control flow statements such asifshould be used instead.Invalid:
Valid:
v2.3.3Compare Source
Patch Changes
#7907
57bd662Thanks@ematipico! - Fixed#7839. Now the Biome parser correctly parses the Astro frontmatter even when a triple fence is inside quotes.#7934
a35c496Thanks@alissonlauffer! - Fixed#7919: The HTML parser now correctly handles Unicode BOM (Byte Order Mark) characters at the beginning of HTML files, ensuring proper parsing and tokenization.#7869
c80361dThanks@matanshavit! - Fixed#7864: Biome now preserves component tag name casing in Svelte, Astro, and Vue files.#7926
69cececThanks@matanshavit! - Added the rulenoParametersOnlyUsedInRecursion.This rule detects function parameters that are exclusively used in recursive calls and can be removed to simplify the function signature since they are effectively unused.
Fixes#6484.
#7774
2509b91Thanks@dibashthapa! - Fixed#7657: Added the new ruleno-unknown-propertyfrom ESLint#7918
7165d06Thanks@dyc3! - Fixed#7913: The CSS parser, withtailwindDirectivesenabled, will now correctly handle@slot.#7959
ffae203Thanks@siketyan! - Fixed the Biome Language Server so it no longer returns an internal error when the formatter is disabled in the configuration.v2.3.2Compare Source
Patch Changes
#7859
c600618Thanks@Netail! - Added the nursery rulenoIncrementDecrement, disallows the usage of the unary operators ++ and --.#7901
0d17b05Thanks@ematipico! - Fixed#7837, where Biome couldn't properly parse text expressions that contained nested curly brackets. This was breaking parsing in Astro and Svelte files.#7874
e617d36Thanks@Bertie690! - Fixed#7230:noUselessStringConcatno longer emits false positives for multi-line strings with leading+operators.Previously, the rule did not check for leading newlines on the
+operator, emitting false positives if one occurred at the start of a line.Notably, formatting with
operatorLinebreak="before"would move the+operators to the start of lines automatically, resulting in spurious errors whenever a multi-line string was used.Now, the rule correctly detects and ignores multi-line concatenations with leading operators as well, working regardless of the setting of
operatorLinebreak.Example
#7786
33ffcd5Thanks@daivinhtran! - Fixed#7601: Properly match Grit plugin's code snippet with only one child.#7901
0d17b05Thanks@ematipico! - Fixed#7837, where Biome Language Server panicked when opening HTML-ish files when the experimental full support is enabled.v2.3.1Compare Source
Patch Changes
#7840
72afdfaThanks@ematipico! - Fixed#7838, which caused the new--css-parse-*arguments not being recognised by thecicommand.#7789
d5b416eThanks@fronterior! - Fixed the LSP methodworkspace/didChangeWorkspaceFoldersto perform incremental updates instead of replacing the entire folder list.#7852
bd254c7Thanks@dyc3! - Fixed#7843: The CSS parser, whentailwindDirectivesis enabled, correctly parses--*: initial;.#7872
0fe13feThanks@dyc3! - Fixed#7861: The HTML parser will now accept Svelte attribute shorthand syntax in.sveltefiles.#7866
7b2600bThanks@dyc3! - Fixed#7860: The css parser, withtailwindDirectivesenabled, will now accept@pluginoptions.#7853
fe90c78Thanks@dyc3! - Fixed#7848: The css parser withtailwindDirectivesenabled will now correctly parse tailwind's source exclude syntax:@source not "foo.css";#7878
c9f7fe5Thanks@ematipico! - Fixed#7857: Biome now parses<script>tags as TypeScript when analysing.astrofiles.#7867
b42b718Thanks@smorimoto! - Fixed incorrect option name in HTML parser error message.The error message for disabled text expressions incorrectly referred
to the
html.parser.textExpressionoption, which does not exist.Updated it to reference the correct
html.parser.interpolationoption.v2.3.0Compare Source
Minor Changes
a3e3369Thanks@arendjr! - Biome's resolver now supportsbaseUrlif specified intsconfig.json.Example
Given the following file structure:
tsconfig.json{"compilerOptions": {"baseUrl":"./src" }}src/foo.tsIn this scenario,
import { foo } from "foo";should work regardless of thelocation of the file containing the
importstatement.Fixes#6432.
#7745
6fcbc07Thanks@dyc3! - Addedignoreoption tonoUnknownAtRules. If an unknown at-rule matches any of the items provided inignore, a diagnostic won't be emitted.#7753
63cb7ffThanks@ematipico! - Enhanced theinitcommand. Theinitcommand now checks if the existing project contains known ignore files and known generated folders.If Biome finds
.gitignoreor.ignorefiles, it will add the following configuration tobiome.json:{+ "vcs": {+ "enabled": true,+ "clientKind": "git",+ "useIgnoreFile": true+ }}If Biome finds a
dist/folder, it will exclude it automatically using the double-exclude syntax:{+ "files": {+ "includes": ["**", "!!**/dist"]+ }}#7548
85d3a3aThanks@siketyan! - The rules in a domain are no longer enabled automatically by the installed dependencies unless the rule is recommended.#7723
d3aac63Thanks@ematipico! - Added--css-parse-css-modulesCLI flag to control whether CSS Modules syntax is enabled.You can now enable or disable CSS Modules parsing directly from the command line:
#7723
d3aac63Thanks@ematipico! - Added--css-parse-tailwind-directivesCLI flag to control whether Tailwind CSS 4.0 directives and functions are enabled.You can now enable or disable Tailwind CSS 4.0 directive parsing directly from the command line:
#7330
272632fThanks@ematipico! - Updated the formatting of.svelteand.vuefiles. Now the indentation of the JavaScript blocks matches Prettier's:#7333
de0d2d6Thanks@dyc3! - Implemented theindentScriptAndStyleoption for vue and svelte files, with the default set tofalseto matchPrettier'svueIndentScriptAndStyleoption. When enabled, this option indents the content within<script>and<style>tags to align with the surrounding HTML structure.It can be enabled with this configuration:
{"html": {"formatter": {"indentScriptAndStyle":true } }}Which will format this code to:
#7359
ebbddc4Thanks@arendjr! - Deprecated the optionfiles.experimentalScannerIgnoresin favour offorce-ignore syntax infiles.includes.files.includessupports ignoring files by prefixing globs with an exclamation mark (!). With this change, it also supportsforce-ignoring globs by prefixing them with a double exclamation mark (!!).The effect of force-ignoring is that the scanner will not index files matching the glob, even in project mode, even if those files are imported by other files, and even if they are files that receive special treatment by Biome, such as nested
biome.jsonfiles.Example
Let's take the following configuration:
{"files": {"includes": ["**","!**/generated","!!**/dist","fixtures/example/dist/*.js" ] },"linter": {"domains": {"project":"all" } }}This configuration achieves the following:
generatedfolder are not processed by the linter, but they will get indexedif a file outside ageneratedfolder imports them.distfolder are never indexed nor processed, not even if they are imported for any purpose,except:distfolder is insidefixtures/example/, its.jsfilesdo get both indexed and processed.In general, we now recommend using the force-ignore syntax for any folders that containoutput files, such as
build/anddist/. For such folders, it is highly unlikely that indexing has any useful benefits. For folders containing generated files, you may wish to use the regular ignore syntax so that type information can still be extracted from the files.experimentalScannerIgnoreswill continue to work for now, but you'll see a deprecation warning if you still use it.Run the
biome migrate --writecommand to automatically update the configuration file.#7698
3b6f5e3Thanks@ematipico! - Added a new reporter namedrdjson. This reporter prints diagnostics following theRDJSON format:The following command:
Will emit diagnostics in the following format:
{"source": {"name":"Biome","url":"https://biomejs.dev" },"diagnostics": [ {"code": {"url":"https://biomejs.dev/linter/rules/no-unused-imports","value":"lint/correctness/noUnusedImports" },"location": {"path":"index.ts","range": {"end": {"column":11,"line":0 },"start": {"column":7,"line":0 } } },"message":"This import is unused." }, {"code": {"url":"https://biomejs.dev/linter/rules/no-unused-imports","value":"lint/correctness/noUnusedImports" },"location": {"path":"index.ts","range": {"end": {"column":10,"line":1 },"start": {"column":9,"line":1 } } },"message":"Several of these imports are unused." } ]}#7719
188a767Thanks@cadunass! - TheformatWithErrorsoption can now be set via CLI using the--format-with-errorsflag.This flag was previously only available in the configuration file. It allows formatting to proceed on files with syntax errors, which is useful during development when you want to auto-format code while fixing syntax issues.
Example
#7723
d3aac63Thanks@ematipico! - Added--json-parse-allow-commentsCLI flag to control whether comments are allowed in JSON files.You can now enable or disable comment parsing in JSON files directly from the command line:
#7723
d3aac63Thanks@ematipico! - Added--json-parse-allow-trailing-commasCLI flag to control whether trailing commas are allowed in JSON files.You can now enable or disable trailing comma parsing in JSON files directly from the command line:
#7758
cea002fThanks@ematipico! - Promoted new lint rules:noNonNullAssertedOptionalChainto the suspicious groupuseReactFunctionComponentsto thestylegroupuseImageSizeto thecorrectnessgroupuseConsistentTypeDefinitionsto thestylegroupuseQwikClasslistto thecorrectnessgroupnoSecretsto thesecuritygroupRemoved the lint rule
useAnchorHref, because its use case is covered byuseValidAnchor.#6356
296627dThanks@wrick17! - Added the newcheckstylereporter. When--reporter=checkstyleis passed to the CLI, Biome will emit diagnostics forCheckstyle format:#7488
b13e524Thanks@kpapa05! - Added "@rbxts/react" as an alias for "react" for handling the reactClassic jsxRuntime.#7536
0bccd34Thanks@TheAlexLichter! - Added.oxlintrc.jsonto well-known files.#7548
85d3a3aThanks@siketyan! - The following rules are now a part of thereactdomain, and they won't be enabled automatically unless you enabled the domain, or Biome detectsreactas a dependency of your closestpackage.json:lint/correctness/noChildrenProp(recommended)lint/correctness/noReactPropAssignmentslint/security/noDangerouslySetInnerHtml(recommended)lint/security/noDangerouslySetInnerHtmlWithChildren(recommended)lint/style/useComponentExportOnlyModuleslint/suspicious/noArrayIndexKey(recommended)#7667
480909aThanks@ematipico! - Added the ability to show severityInformationdiagnostics in reporter outputs.If one or more rules are triggered, and they are configured to emit an
Informationdiagnostic, now they're counted in the final output:#7702
28e8860Thanks@ematipico! - Added linting and assist support for.htmlfiles, with addition of two new configurations:html.linter.enabledhtml.assist.enabledThe HTML linter, in this release, only contains the rule
noHeaderScope. More rules will be released in the upcoming releases.#7164
f66b0c5Thanks@dyc3! - Added a new CSS parser optiontailwindDirectives. Enabling this option will allow all of Tailwind v4's syntax additions to be parsed and formatted by Biome.You can enable this by setting
css.parser.tailwindDirectivestotruein your Biome configuration.{"css": {"parser": {"tailwindDirectives":true } }}#7669
6ed4d16Thanks@barklund! - React 19.2 support is now supported in Biome:useEffectEventlikeuseRefinuseExhaustiveDependencies<Activity />to known React APIs.#7702
28e8860Thanks@ematipico! - Addedexperimental full support for HTML, Vue, Svelte and Astro files. In this release, the HTML parserhas been enhanced, and it's now able to parse
.vue,.svelteand.astrofiles.This means that now Biome is able to lint and format the JavaScript (TypeScript), HTML and CSS code that is contained in these files.
Now that the main architecture is stable and working, in the upcoming patches and minors we will also fix possible inaccuracies and edge cases coming from existing lint rules, such as
noUnusedVariablesinside<script>blocks or frontmatter.The support is considered experimental because there might be cases that aren't fine-parsed yet, hence causing possible inaccuracies when it comes to formatting and linting.
#7599
09445c8Thanks@anaisbetts! - #### lineEnding has a new optionautoThe option
lineEndingnow has a variant calledautoto match the operating system's expectedline-ending style: on Windows, this will be CRLF (
\r\n), and on macOS / Linux, this willbe LF (
\n).This allows for cross-platform projects that use Biome not to have to
force one option or the other, which aligns better with Git's default behavior
on these platforms.
Example usage:
{"formatter": {"lineEnding":"auto" }}#7392
e4feb8eThanks@ematipico! - Added new capabilities to the CLI arguments--skipand--only, available to thebiome lintcommand.--skipand--onlycan now accept domain names; when provided, Biome will run or skip all the rules that belong to a certain domain.For example, the following command will only run the rules that belong to thenext domain:
Another example, the following command will skip the rules that belong to theproject domain:
#7702
28e8860Thanks@ematipico! - Added a new option calledhtml.interpolation. This option enables the parsing of text expressions (or interpolation) in HTML files.The following
file.htmlwill be correctly formatted:To note that
html.interpolationonly parses text expressions that are delimited by double curly braces ({{ }}). The content of expressions is parsed as normal text.Patch Changes
#7712
fcc9b42Thanks@minht11! - Added new ruleuseVueDefineMacrosOrderwhich allows enforcing specific order for Vue compiler macros.In this example, the rule will suggest moving
definePropsbeforedefineEmits:#7698
3b6f5e3Thanks@ematipico! - Fixed an issue where the JUnit reporter returned a zero-based location. Now the location returned is one-based.#7819
ef45056Thanks@ematipico! - Fixed#7788. Removes some error logging that were emitted when loading possible configuration files.#7593
e51dd55Thanks@arendjr! - Fixed an issue with thefiles.maxSizesetting. Previously the setting would always be looked up in the root settings, even in monorepos where a closerbiome.jsonis available. It now correctly uses the nearest configuration.#7825
ad55b35Thanks@Conaclos! - Fixed#7798.useNamingConvention no longer panics when it encounters a name that consists of a single dollar sign$that doesn't match a custom convention.#7764
93be2abThanks@gaauwe! - Fixed#6589: Biome now properly loads extension settings before loading the configuration file when opening a text document in the LSP server.v2.2.7Compare Source
Patch Changes
#7715
b622425Thanks@Netail! - Added the nursery rulenoEmptySource, disallowing meaningless js, css, json & graphql files to prevent codebase clutter.#7714
c7e5a14Thanks@MeGaNeKoS! - Increased the maximum line limit fornoExcessiveLinesPerFunction from 255 to 65,535 to better support large JSX/front-end components.#5868
2db73aeThanks@bushuai! - Fixed#5856,noRedundantUseStrictnow keeps leading trivia#7756
d665c97Thanks@ematipico! - Improved the diagnostic message of the rulenoDuplicateTestHooks.v2.2.6Compare Source
Patch Changes
#7071
a8e7301Thanks@ptkagori! - Added theuseQwikMethodUsagelint rule for the Qwik domain.This rule validates Qwik hook usage. Identifiers matching
useXxxmust be called only within serialisable reactive contexts (for example, insidecomponent$, route loaders/actions, or within other Qwik hooks), preventing common Qwik antipatterns.Invalid:
Valid:
#7685
52071f5Thanks@denbezrukov! - Fixed#6981: TheNoUnknownPseudoClass rule no longer reports local pseudo-classes when CSS Modules are used.#7640
899f7b2Thanks@arendjr! - Fixed#7638:useImportExtensionsno longer emits diagnostics on valid import paths that end with a query or hash.Example
#7071
a8e7301Thanks@ptkagori! - Added theuseQwikValidLexicalScoperule to the Qwik domain.This rule helps you avoid common bugs in Qwik components by checking that your variables and functions are declared in the correct place.
Invalid:
Valid:
#7620
5beb1eeThanks@Netail! - Added the ruleuseDeprecatedDate, which makes a deprecation date required for the graphql@deprecateddirective.Invalid
Valid
#7709
d6da4d5Thanks@siketyan! - Fixed#7704: TheuseExhaustiveDependenciesrule now correctly adds an object dependency when its method is called within the closure.For example:
will now be fixed to:
#7624
309ae41Thanks@lucasweng! - Fixed#7595:noUselessEscapeInStringno longer reports$\{escape in template literals.#7665
29e4229Thanks@ryan-m-walker! - Fixed#7619: Added support for parsing the CSS:state()pseudo-class.#7608
41df59bThanks@ritoban23! - Fixed#7604: theuseMaxParamsrule now highlights parameter lists instead of entire function bodies. This provides more precise error highlighting. Previously, the entire function was highlighted; now only the parameter list is highlighted, such as(a, b, c, d, e, f, g, h).#7643
459a6acThanks@daivinhtran! - Fixed#7580: Include plugin in summary reportv2.2.5Compare Source
Patch Changes
#7597
5c3d542Thanks@arendjr! - Fixed#6432:useImportExtensionsnow works correctly with aliased paths.#7269
f18dac1Thanks@CDGardner! - Fixed#6648, where Biome'snoUselessFragmentscontained inconsistencies with ESLint for fragments only containing text.Previously, Biome would report that fragments with only text were unnecessary under the
noUselessFragmentsrule. Further analysis of ESLint's behavior towards these cases revealed that text-only fragments (<>A</a>,<React.Fragment>B</React.Fragment>,<RenamedFragment>B</RenamedFragment>) would not havenoUselessFragmentsemitted for them.On the Biome side, instances such as these would emit
noUselessFragments, and applying the suggestConfiguration
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