Analyzer
New features
- Implement nursery/useConsistentMemberAccessibility. Contributed by @seitarof
Enhancements
- Implement css suppression action. Contributed by @togami2864
- Add support of comments in
turbo.json
. Contributed by @Netail - Implement semantic model for CSS. Contributed by @togami2864
- Integrate CSS semantic model into the analyzer. Contributed by @togami2864
CLI
New features
-
Add
--graphql-linter-enabled
option, to control whether the linter should be enabled or not for GraphQL files. Contributed by @ematipico -
New EXPERIMENTAL
search
command. The search command allows you to search a Biome project using GritQL syntax.GritQL is a powerful language that lets you do structural searches on your codebase. This means that trivia such as whitespace or even the type of strings quotes used will be ignored in your search query. It also has many features for querying the structure of your code, making it much more elegant for searching code than regular expressions.
While we believe this command may already be useful to users in some situations (especially when integrated in the IDE extensions!), we also had an ulterior motive for adding this command: We intend to utilize GritQL for our plugin efforts, and by allowing our users to try it out in a first iteration, we hope to gain insight in the type of queries you want to do, as well as the bugs we need to focus on.
For now, the
search
command is explicitly marked as EXPERIMENTAL, since many bugs remain. Keep this in mind when you try it out, and please let us know your issues!Note: GritQL escapes code snippets using backticks, but most shells interpret backticks as command invocations. To avoid this, it's best to put single quotes around your Grit queries.
biome search '`console.log($message)`' # find all `console.log` invocations
Contributed by @arendjr and @BackupMiles
-
The option
--max-diagnostics
now accept anone
value, which lifts the limit of diagnostics shown. Contributed by @ematipico-
Add a new reporter
--reporter=gitlab
, that emits diagnostics for using the GitLab Code Quality report.[ { "description": "Use === instead of ==. == is only allowed when comparing against `null`", "check_name": "lint/suspicious/noDoubleEquals", "fingerprint": "6143155163249580709", "severity": "critical", "location": { "path": "main.ts", "lines": { "begin": 4 } } } ]
Contributed by @NiclasvanEyk
-
-
Add new options to the
lsp-proxy
andstart
commands:--log-path
: a directory where to store the daemon logs. The commands also accepts the environment variableBIOME_LOG_PATH
.--log-prefix-name
: a prefix that's added to the file name of the logs. It defaults toserver.log
. The commands also accepts the environment variableBIOME_LOG_PREFIX_NAME
.
Enhancements
-
When a
--reporter
is provided, and it's different from the default one, the value provided by via--max-diagnostics
is ignored and the limit is lifted. Contributed by @ematipico -
biome init
now generates a new config file with more options set.
This change intends to improve discoverability of the options and to set the more commonly used options to their default values.
Contributed by @Conaclos -
The
--verbose
flag now reports the list of files that were evaluated, and the list of files that were fixed.
The evaluated files are the those files that can be handled by Biome, files that are ignored, don't have an extension or have an extension that Biome can't evaluate are excluded by this list.
The fixed files are those files that were handled by Biome and changed. Files that stays the same after the process are excluded from this list.VERBOSE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ℹ Files processed: - biome/biome.json - biome/packages/@biomejs/cli-win32-arm64/package.json - biome/packages/tailwindcss-config-analyzer/package.json VERBOSE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ℹ Files fixed: - biome/biome/packages/tailwindcss-config-analyzer/src/generate-tailwind-preset.ts
Contributed by @ematipico
-
Allow passing
nursery
to the--only
and--skip
filters.The
--only
option allows you to run a given rule or rule group.
The--skip
option allows you to skip the execution of a given group or a given rule.Previously, it was not possible to pass
nursery
.
This restriction is now removed, as it may make sense to skip the nursery rules that a project has enabled.Contributed by @Conaclos
-
The CLI now returns an error code when calling a command in
stdin
mode, and the contents of the files aren't fixed. For example, the following example will result in an error code of1
because thelint
command triggers some lint rules:echo "let x = 1" | biome lint --stdin-file-path=stdin.js
Contributed by @ematipico
Bug fixes
-
biome lint --write
now takes--only
and--skip
into account (#3470). Contributed by @Conaclos -
Fix #3368, now the reporter
github
tracks the diagnostics that belong to formatting and organize imports. Contributed by @ematipico -
Fix #3545, display a warning, 'Avoid using unnecessary Fragment,' when a Fragment contains only one child element that is placed on a new line. Contributed by @satojin219
-
Migrating from Prettier or ESLint no longer overwrite the
overrides
field from the configuration (#3544). Contributed by @Conaclos -
Fix JSX expressions for
noAriaHiddenOnFocusable
(#3708). Contributed by @anthonyshew -
Fix edge case for
<canvas>
elements that userole="img"
(#3728). Contributed by @anthonyshew -
Fix #3633, where diagnostics where incorrectly printed if the code has errors. Contributed by @ematipico
-
Allow
aria-label
on heading to preventuseHeadingContent
diagnostic (#3767). Contributed by @anthonyshew -
Fix edge case #3791 for rule
noFocusedTests
being used with non-string-like expressions (#3793). Contributed by @h-a-n-a
Configuration
-
Add support for loading configuration from
.editorconfig
files (#1724).Configuration supplied in
.editorconfig
will be overridden by the configuration inbiome.json
. Support is disabled by default and can be enabled by adding the following to your formatter configuration inbiome.json
:{ "formatter": { "useEditorconfig": true } }
Contributed by @dyc3
-
overrides
from an extended configuration is now merged with theoverrides
of the extension.Given the following shared configuration
biome.shared.json
:{ "overrides": [ { "include": ["**/*.json"], // ... } ] }
and the following configuration:
{ "extends": ["./biome.shared.json"], "overrides": [ { "include": ["**/*.ts"], // ... } ] }
Previously, the
overrides
frombiome.shared.json
was overwritten.
It is now merged and results in the following configuration:{ "extends": ["./biome.shared.json"], "overrides": [ { "include": ["**/*.json"], // ... }, { "include": ["**/*.ts"], // ... } ] }
Contributed by @Conaclos
Editors
Bug fixes
- Fix #3577, where the update of the configuration file was resulting in the creation of a new internal project. Contributed by @ematipico
- Fix #3696, where
biome.jsonc
was incorrectly parsed with incorrect options. Contributed by @ematipico
Formatter
Enhancements
-
Add parentheses for nullcoalescing in ternaries.
This change aligns on Prettier 3.3.3.
This adds clarity to operator precedence.- foo ? bar ?? foo : baz; + foo ? (bar ?? foo) : baz;
Contributed by @Conaclos
-
The CSS formatter is enabled by default. Which means that you don't need to opt-in anymore using the configuration file
biome.json
:{ - "css": { - "formatter": { - "enabled": true - } - } }
Contributed by @ematipico
Bug fixes
-
Keep the parentheses around
infer ... extends
declarations in type unions and type intersections (#3419). Contributed by @Conaclos -
Keep parentheses around a
yield
expression inside a type assertion.Previously, Biome removed parentheses around some expressions that require them inside a type assertion.
For example, in the following code, Biome now preserves the parentheses.function* f() { return <T>(yield 0); }
Contributed by @Conaclos
-
Remove parentheses around expressions that don't need them inside a decorator.
Biome now matches Prettier in the following cases:
class { - @(decorator) + @decorator method() {} }, class { - @(decorator()) + @decorator() method() {} }, class { @(decorator?.()) method() {} },
Contributed by @Conaclos
-
Keep parentheses around objects preceded with a
@satisfies
comment.In the following example, parentheses are no longer removed.
export const PROPS = /** @satisfies {Record<string, string>} */ ({ prop: 0, });
Contributed by @Conaclos
JavaScript APIs
Linter
New features
-
Add nursery/noRestrictedTypes. Contributed by @minht11
-
Add support for GraphQL linting. Contributed by @ematipico
-
Add nursery/noDynamicNamespaceImportAccess. Contributed by @minht11
-
noUndeclaredVariables no longer reports a direct reference to an enum member (#2974).
In the following code, the
A
reference is no longer reported as an undeclared variable.enum E { A = 1, B = A << 1, }
Contributed by @Conaclos
-
Add nursery/noIrregularWhitespace. Contributed by @michellocana
-
Implement
noIrreguluarWhitespace
for CSS. Contributed by @DerTimonius -
Add nursery/useTrimStartEnd. Contributed by @chansuke
-
Add nursery/noUselessEscapeInRegex.
Contributed by @Conaclos -
Add nursery/useConsistentMemberAccessibility. Contributed by @seitarof
Enhancements
-
noInvalidUseBeforeDeclaration now reports direct use of an enum member before its declaration.
In the following code,
A
is reported as use before its declaration.enum E { B = A << 1, A = 1, }
Contributed by @Conaclos
-
useFilenamingConvention now supports unicase letters.
unicase letters have a single case: they are neither uppercase nor lowercase.
Biome now accepts filenames in unicase.
For example, the filename안녕하세요
is now accepted.We still reject a name that mixes unicase characters with lowercase or uppercase characters.
For example, the filenameA안녕하세요
is rejected.This change also fixes #3353.
Filenames consisting only of numbers are now accepted.Contributed by @Conaclos
-
useFilenamingConvention now supports Next.js/Nuxt/Astro dynamic routes (#3465).
Next.js, SolidStart, Nuxt, and Astro support dynamic routes such as
[...slug].js
and[[...slug]].js
.Biome now recognizes this syntax.
slug
must contain only alphanumeric characters.Contributed by @Conaclos
-
useExportType no longer report empty
export
(#3535).An empty
export {}
allows you to force TypeScript to consider a file with no imports and exports as an EcmaScript module.
Whileexport type {}
is valid, it is more common to useexport {}
.
Users may find it confusing that the linter asks them to convert it toexport type {}
.
Also, a bundler should be able to removeexport {}
as well asexport type {}
.
So it is not so useful to reportexport {}
.Contributed by @Conaclos
-
noUnusedVariables now checks TypeScript declaration files.
This allows to report a type that is unused because it isn't exported.
Global declarations files (declarations files without exports and imports) are still ignored.Contributed by @Conaclos
-
noUndeclaredVariables recognized Svelte 5 runes in Svelte components and svelte files.
Svelte 5 introduced runes.
The rule now recognizes Svelte 5 runes in files ending with the.svelte
,.svelte.js
or.svelte.ts
extensions.Contributed by @Conaclos
-
noBlankTarget now supports an array of allowed domains.
The following configuration allows
example.com
andexample.org
as blank targets."linter": { "rules": { "a11y": { "noBlankTarget": { "level": "error", "options": { "allowDomains": ["example.com", "example.org"] } } } } }
Contributed by @Jayllyz
-
noNodejsModules now ignores type-only imports (#1674).
The rule no longer reports type-only imports such as:
import type assert from "assert"; import type * as assert2 from "assert";
Contributed by @Conaclos
-
noNodejsModules now ignores imports of a package which has the same name as a Node.js module. Contributed by @Conaclos
-
Add an
ignoreNull
option for noDoubleEquals. Contributed by @peaBerberian. -
The rule
noDuplicateObjectKeys
now works for JSON and JSONC files. Contributed by @ematipico -
The CSS linter is now enabled by default. Which means that you don't need to opt-in anymore using the configuration file
biome.json
:{ - "css": { - "linter": { - "enabled": true - } - } }
Contributed by @ematipico
-
The rule
noRedundantUseStrict
no longer reportsuse strict
when thepackage.json
marks the file as a script using the field"type": "commonjs"
. Contributed by @ematipico -
noConsole now accepts an option that specifies some allowed calls on
console
. Contributed by @Conaclos
Bug fixes
-
Don't request alt text for elements hidden from assistive technologies (#3316). Contributed by @robintown
-
Fix [#3149] crashes that occurred when applying the
noUselessFragments
unsafe fixes in certain scenarios. Contributed by @unvalley -
noExcessiveNestedTestSuites
: Fix another edge case where the rule would alert on heavily nested zod schemas. Contributed by @dyc3 -
noExtraNonNullAssertion
no longer reports a single non-null assertion enclosed in parentheses (#3352). Contributed by @Conaclos -
noRedeclare no longer report redeclartions for lexically scoped function declarations #3664.
In JavaScript strict mode, function declarations are lexically scoped:
they cannot be accessed outside the block where they are declared.In non-strict mode, function declarations are hoisted to the top of the enclosing function or global scope.
Previously Biome always hoisted function declarations.
It now takes into account whether the code is in strict or non strict mode.Contributed by @Conaclos
-
noRedeclare no longer report a variable named as the function expression where it is declared. Contributed by @Conaclos
-
noMultipleSpacesInRegularExpressionLiterals now correctly provides a code fix when Unicode characters are used. Contributed by @Conaclos
-
useValidAriaValues now correctly check property types (3748).
Properties that expect a string now accept arbitrary text.
An identifiers can now be made up of any characters except ASCII whitespace.
An identifier list can now be separated by any ASCII whitespace.Contributed by @Conaclos
-
useAdjacentOverloadSignatures
no longer reports a#private
class member and a public class member that share the same name (#3309).The following code is no longer reported:
class C { #f() {} g() {} f() {} }
Contributed by @Conaclos
-
useNamingConvention now accepts applying custom convention on abstract classes. Contributed by @Conaclos
-
useNamingConvention no longer suggests an empty fix when a name doesn't match strict Pascal case (#3561).
Previously the following code led
useNamingConvention
to suggest an empty fix.
The rule no longer provides a fix for this case.type AAb = any
Contributed by @Conaclos
-
useNamingConvention no longer provides fixes for global TypeScript declaration files.
Global TypeScript declaration files have no epxorts and no imports.
All the declared types are available in all files of the project.
Thus, it is not safe to propose renaming only in the declaration file.Contributed by @Conaclos
-
noControlCharactersInRegex now corretcly handle
\u
escapes in unicode-aware regexes.Previously, the rule didn't consider regex with the
v
flags as unicode-aware regexes.
Moreover,\uhhhh
was not handled in unicode-aware regexes.Contributed by @Conaclos
-
noControlCharactersInRegex now reports control characters and escape sequence of control characters in string regexes. Contributed by @Conaclos
-
useSortedClasses lint error with Template literals (#3394). Contributed by @hangaoke1
-
noUndeclaredDependencies now ignores self package imports. Contributed by @Conaclos
Parser
Enhancements
-
The JSON parser now allows comments in files with the
.json
extension under the.vscode
and.zed
directories.Biome recognizes are well known JSON files that allows comments and/or trailing commas.
Previously, Biome did not recognize JSON files under the.vscode
and the.zed
directories as JSON files that allow comments.
You had to configure Biome to recognize them:{ "overrides": [ { "include": ["**/.vscode/*.json", "**/.zed/*.json"], "json": { "parser": { "allowComments": true } } } ] }
This override is no longer needed!
Note that JSON files under the.vscode
and the.zed
directories don't accept trailing commas.Contributed by @Conaclos
-
The JSON parser now allows comments in
jest.config.json
. Contributed by @Conaclos
Bug fixes
-
The CSS parser now accepts emoji in identifiers (3627).
The following code is now corretcly parsed:
p { --🥔-color: red; color: var(--🥔-color); }
Contributed by @Conaclos
-
Fix #3287 nested selectors with pseudo-classes. Contributed by @denbezrukov
-
Fix #3349 allow CSS multiple ampersand support. Contributed by @denbezrukov
.class { && { color: red; } }
-
Fix #3410 by correctly parsing break statements containing keywords.
out: while (true) { break out; }
Contributed by @ah-yu
-
Fix #3464 by enabling JSX in
.vue
files that use thelang='jsx'
orlang='tsx'
attribute. Contributed by @ematipico
What's Changed
Other changes
- fix(ci): missing codegen check by @Jayllyz in #3692
- fix(console): print
<br />
when having a newline by @ematipico in #3701 - fix(console): regression for #3701 by @ematipico in #3703
- feat: adds an option to
HTML
printer for MDX by @ematipico in #3711 - fix: another quick fix to escape some other chars that make MDX go nuts by @ematipico in #3712
- fix: escape backslash when printing HTML in mdx by @ematipico in #3713
- feat(grit): support
as
keyword by @arendjr in #3719 - refactor(diagnostics): indentation by @ematipico in #3722
- feat(lint/useAriaPropsSupportedByRole): add rule by @ryo-ebata in #3644
- chore(deps): update @biomejs packages by @renovate in #3714
- chore(deps): update rust crate serde_json to 1.0.127 by @renovate in #3717
- chore(deps): update rust crate serde to 1.0.209 by @renovate in #3716
- chore(deps): update rust crate quote to 1.0.37 by @renovate in #3715
- refactor(core): ordered paths, project manifest, tsconfig by @ematipico in #3699
- feat(yaml): lexer that can lex very simple examples by @dyc3 in #3430
- perf(ci): speedup free disk space action by @Jayllyz in #3694
- feat(js_analyze): add
lint/noEnum
by @nickfla1 in #3653 - feat(biome_js_analyzer): useJsxSortProps by @vohoanglong0107 in #2652
- fix(docs): typo in
no_double_equals.rs
by @shubh73 in #3730 - refactor(js_analyze): add TypeScript 5.5 and 5.6 globals by @Conaclos in #3735
- refactor: avoid UTF-8 validation of file extensions by @Conaclos in #3737
- fix(core): ser/de for
FileKind
by @ematipico in #3736 - feat(lsp): add codeActionKinds by @suxin2017 in #3731
- refactor: update bench by @Conaclos in #3739
- chore(deps): update dependency eslint to v9.9.1 by @renovate in #3642
- fix(lsp): update diagnostics only for supported files by @ematipico in #3741
- chore(css_semantic): allow an empty at-property declation by @togami2864 in #3744
- chore(deps): update rust crate indexmap to 2.5.0 by @renovate in #3754
- chore(deps): update pnpm to v9.9.0 by @renovate in #3753
- chore(deps): update rust crate oxc_resolver to 1.11.0 by @renovate in #3755
- chore(deps): update dependency @types/node to v20.16.3 by @renovate in #3750
- chore(deps): update actions/upload-artifact action to v4.4.0 - autoclosed by @renovate in #3752
- refactor(summary-reporter): order reported paths by @Conaclos in #3757
- feat(search): add matches number to summary by @BackupMiles in #3747
- feat(css_semantic): implement rule hierarchy tracking and enhance rule lookup by @togami2864 in #3746
- fix(useExhaustiveDependencies): make stableResult optional by @Conaclos in #3764
- fix(js_formatter): add parens for nullish coalescing in ternary by @Conaclos in #3765
- fix(css_parser): fix is at unicode range check by @suxin2017 in #3745
- fix: don't panic in debug mode when encountring complex variable declaration by @Conaclos in #3769
- perf(css_parser): avoid expensive check when parsing an id by @Conaclos in #3774
- chore(bench): pin bench libs by @pnodet in #3772
- feat(html): set up
biome_html_formatter
by @dyc3 in #3773 - fix(parser/html): fix parsing
html
keyword in doctype by @dyc3 in #3776 - feat(format/html): add
quick_test
to formatter crate by @dyc3 in #3777 - fix(js_format): fix js template element parentheses issue by @suxin2017 in #3780
- refactor(biome_diagnostics): use enumflags2 for
DiagnosticTag
by @Javimtib92 in #3785 - refactor(biome_js_parser/lexer): use enumflags2 for
RegexFlag
by @Javimtib92 in #3788 - refactor(biome_js_parser/syntax): use enumflags2 for
TypeContext
by @Javimtib92 in #3789 - fix(grit): fix matching names in Grit queries by @arendjr in #3792
- fix(deps): update rust crates by @renovate in #3751
- refactor(biome_js_parser/syntax): use enumflags2 for
ModifierFlag
by @Javimtib92 in #3796 - fix(grit): fix matching multiple args by @arendjr in #3797
- refactor(biome_js_parser/state): use enumflags2 for
SignatureFlag
andParsingContextFlag
by @Javimtib92 in #3800 - refactor(biome_js_parser/syntax): use enumflags2 for
ExpressionContextFlag
by @Javimtib92 in #3799 - refactor(biome_parser): use enumflags2 for
TokenFlag
and removebitflags
by @Javimtib92 in #3802 - ci: fix broken CLI binary copy step for NPM publish by @benjamincburns in #3805
- chore(ci): auto label HTML PRs by @dyc3 in #3803
New Contributors
- @peaBerberian made their first contribution in #3702
- @anthonyshew made their first contribution in #3708
- @nickfla1 made their first contribution in #3653
- @shubh73 made their first contribution in #3730
- @pnodet made their first contribution in #3772
- @Javimtib92 made their first contribution in #3785
- @h-a-n-a made their first contribution in #3793
- @benjamincburns made their first contribution in #3805
Full Changelog: cli/v1.8.4-nightly.d079e53...cli/v1.8.4-nightly.7aaf0ce