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CLI v1.7.4-nightly.125f34b

23 May 07:14
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cli/v1.7.4-nightly.125f34b
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CLI v1.7.4-nightly.125f34b Pre-release
Pre-release

Analyzer

Enhancements

  • Assume Vue compiler macros are globals when processing .vue files. (#2771) Contributed by @dyc3

CLI

New features

  • Add a new option --rule to the command biome lint (#58).

    This new option allows you to execute a single rule or a rule group.
    This option is convenient to test a rule or apply the code fixes of a single rule.

    For example, you can execute the style/useNamingConvention rule on the working directory:

    biome lint --rule=style/useNamingConvention ./

    If the rule has a code action (autofix), you can use --apply to apply the fix:

    biome lint --rule=style/useNamingConvention --apply ./

    The option takes the rule options in the Biome configuration file into account.
    Only, the severity level of the rule is overridden by its default value,
    i.e. error for a recommended rule or warn otherwise.

    You can also run a group of rules:

    biome lint --rule=suspicious src/main.js

    In this case, the severity level of a rule is not overridden.
    Thus, the disabled rules stay disabled.
    To ensure that the group is run, the recommended field of the group is turned on.
    The nursery group cannot be passed because no rules are enabled in the nursery group by default.

    The option is compatible with other options such as --apply, --apply-unsafe and --reporter.

    Contributed by @Conaclos

  • Add new command biome clean. Use this command to purge all the logs emitted by the Biome daemon. This command is really useful, because the Biome daemon tends
    log many files and contents during its lifecycle. This means that if your editor is open for hours (or even days), the biome-logs folder could become quite heavy. Contributed by @ematipico

  • Add support for formatting and linting CSS files from the CLI. These operations are opt-in for the time being.

    If you don't have a configuration file, you can enable these features with --css-formatter-enabled and --css-linter-enabled:

    biome check --css-formatter-enabled=true --css-linter-enabled=true ./

    Contributed by @ematipico

  • Add new CLI options to control the CSS formatting. Check the CLI reference page for more details. Contributed by @ematipico

  • Add new options --write, --fix (alias of --write) and --unsafe to the command biome lint and biome check.
    Add a new option --fix (alias of --write) to the command biome format and biome migrate.

    biome <lint|check> --<write|fix> [--unsafe]
biome format --<write|fix>
biome migrate --<write|fix>

    The biome <lint|check> --<write|fix> has the same behavior as biome <lint|check> --apply.
    The biome <lint|check> --<write|fix> --unsafe has the same behavior as biome <lint|check> --apply-unsafe.
    The biome format --fix has the same behavior as biome format --write.
    The biome migrate --fix has the same behavior as biome migrate --write.

    This change allows these commands to write modifications in the same options.
    With this change, the --apply and --apply-unsafe options are deprecated.

    Contributed by @unvalley

Enhancements

  • Biome now executes commands (lint, format, check and ci) on the working directory by default. #2266 Contributed by @unvalley

    - biome check .
+ biome check    # You can run the command without the path

  • biome migrate eslint now tries to convert ESLint ignore patterns into Biome ignore patterns.

    ESLint uses gitignore patterns.
    Biome now tries to convert these patterns into Biome ignore patterns.

    For example, the gitignore pattern /src is a relative path to the file in which it appears.
    Biome now recognizes this and translates this pattern to ./src.

    Contributed by @Conaclos

  • biome migrate eslint now supports the eslintIgnore field in package.json.

    ESLint allows the use of package.json as an ESLint configuration file.
    ESLint supports two fields: eslintConfig and eslintIgnore.
    Biome only supported the former. It now supports both.

    Contributed by @Conaclos

  • biome migrate eslint now propagates NodeJS errors to the user.

    This will help users to identify why Biome is unable to load some ESLint configurations.

    Contributed by @Conaclos

  • Add a new --reporter called summary. This reporter will print diagnostics in a different way, based on the tools (formatter, linter, etc.) that are executed.
    Import sorting and formatter shows the name of the files that require formatting. Instead, the linter will group the number of rules triggered and the number of errors/warnings:

    Formatter ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
The following files needs to be formatted:
main.ts
index.ts

Organize Imports ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
The following files needs to have their imports sorted:
main.ts
index.ts

Analyzer ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Some analyzer rules were triggered

Rule Name                                               Diagnostics
lint/suspicious/noImplicitAnyLet                        12 (12 error(s), 0 warning(s), 0 info(s))
lint/suspicious/noDoubleEquals                          8 (8 error(s), 0 warning(s), 0 info(s))
lint/suspicious/noRedeclare                             12 (12 error(s), 0 warning(s), 0 info(s))
lint/suspicious/noDebugger                              20 (20 error(s), 0 warning(s), 0 info(s))

    Contributed by @ematipico

  • biome ci now enforces printing the output using colours. If you were previously using --colors=force, you can remove it because it's automatically set. Contributed by @ematipico

Configuration

New features

  • Add an rule option fix to override the code fix kind of a rule (#2882).

    A rule can provide a safe or an unsafe code action.
    You can now tune the kind of code actions thanks to the fix option.
    This rule option takes a value among:

    • none: the rule no longer emits code actions.
    • safe: the rule emits safe code action.
    • unsafe: the rule emits unsafe code action.

    The following configuration disables the code actions of noUnusedVariables, makes the emitted code actions of style/useConst and style/useTemplate unsafe and safe respectively.

    {
  "linter": {
    "rules": {
      "correctness": {
        "noUnusedVariables": {
          "level": "error",
          "fix": "none"
        },
        "style": {
          "useConst": {
            "level": "warn",
            "fix": "unsafe"
          },
          "useTemplate": {
            "level": "warn",
            "fix": "safe"
          }
        }
      }
    }
  }
}

    Contributed by @Conaclos

  • Add option javascript.linter.enabled to control the linter for JavaScript (and its super languages) files. Contributed by @ematipico

  • Add option json.linter.enabled to control the linter for JSON (and its super languages) files. Contributed by @ematipico

  • Add option css.linter.enabled to control the linter for CSS (and its super languages) files. Contributed by @ematipico

  • Add option css.formatter, to control the formatter options for CSS (and its super languages) files. Contributed by @ematipico

Enhancements

  • The javascript.formatter.trailingComma option is deprecated and renamed to javascript.formatter.trailingCommas. The corresponding CLI option --trailing-comma is also deprecated and renamed to --trailing-commas. Details can be checked in #2492. Contributed by @Sec-ant

Editors

New features

  • Add support for LSP Workspaces

Bug fixes

  • Fixes #2781, by correctly computing the configuration to apply to a specific file. Contributed by @ematipico

Formatter

Bug fixes

  • Fix #2470 by avoid introducing linebreaks in single line string interpolations. Contributed by @ah-yu
  • Resolve deadlocks by narrowing the scope of locks. Contributed by @mechairoi
  • Fix #2782 by computing the enabled rules by taking the override settings into consideration. Contributed by @ematipico

JavaScript APIs

Linter

New features

Read more

Contributors

mechairoi, chansuke, and 16 other contributors
Assets 10

JavaScript APIs v0.6.0-nightly.af70ac2

23 May 04:38
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js-api/v0.6.0-nightly.af70ac2
af70ac2
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JavaScript APIs v0.6.0-nightly.af70ac2 Pre-release
Pre-release

Analyzer

Enhancements

  • Assume Vue compiler macros are globals when processing .vue files. (#2771) Contributed by @dyc3

CLI

New features

  • Add a new option --rule to the command biome lint (#58).

    This new option allows you to execute a single rule or a rule group.
    This option is convenient to test a rule or apply the code fixes of a single rule.

    For example, you can execute the style/useNamingConvention rule on the working directory:

    biome lint --rule=style/useNamingConvention ./

    If the rule has a code action (autofix), you can use --apply to apply the fix:

    biome lint --rule=style/useNamingConvention --apply ./

    The option takes the rule options in the Biome configuration file into account.
    Only, the severity level of the rule is overridden by its default value,
    i.e. error for a recommended rule or warn otherwise.

    You can also run a group of rules:

    biome lint --rule=suspicious src/main.js

    In this case, the severity level of a rule is not overridden.
    Thus, the disabled rules stay disabled.
    To ensure that the group is run, the recommended field of the group is turned on.
    The nursery group cannot be passed because no rules are enabled in the nursery group by default.

    The option is compatible with other options such as --apply, --apply-unsafe and --reporter.

    Contributed by @Conaclos

  • Add new command biome clean. Use this command to purge all the logs emitted by the Biome daemon. This command is really useful, because the Biome daemon tends
    log many files and contents during its lifecycle. This means that if your editor is open for hours (or even days), the biome-logs folder could become quite heavy. Contributed by @ematipico

  • Add support for formatting and linting CSS files from the CLI. These operations are opt-in for the time being.

    If you don't have a configuration file, you can enable these features with --css-formatter-enabled and --css-linter-enabled:

    biome check --css-formatter-enabled=true --css-linter-enabled=true ./

    Contributed by @ematipico

  • Add new CLI options to control the CSS formatting. Check the CLI reference page for more details. Contributed by @ematipico

  • Add new options --write, --fix (alias of --write) and --unsafe to the command biome lint and biome check.
    Add a new option --fix (alias of --write) to the command biome format and biome migrate.

    biome <lint|check> --<write|fix> [--unsafe]
biome format --<write|fix>
biome migrate --<write|fix>

    The biome <lint|check> --<write|fix> has the same behavior as biome <lint|check> --apply.
    The biome <lint|check> --<write|fix> --unsafe has the same behavior as biome <lint|check> --apply-unsafe.
    The biome format --fix has the same behavior as biome format --write.
    The biome migrate --fix has the same behavior as biome migrate --write.

    This change allows these commands to write modifications in the same options.
    With this change, the --apply and --apply-unsafe options are deprecated.

    Contributed by @unvalley

Enhancements

  • Biome now executes commands (lint, format, check and ci) on the working directory by default. #2266 Contributed by @unvalley

    - biome check .
+ biome check    # You can run the command without the path

  • biome migrate eslint now tries to convert ESLint ignore patterns into Biome ignore patterns.

    ESLint uses gitignore patterns.
    Biome now tries to convert these patterns into Biome ignore patterns.

    For example, the gitignore pattern /src is a relative path to the file in which it appears.
    Biome now recognizes this and translates this pattern to ./src.

    Contributed by @Conaclos

  • biome migrate eslint now supports the eslintIgnore field in package.json.

    ESLint allows the use of package.json as an ESLint configuration file.
    ESLint supports two fields: eslintConfig and eslintIgnore.
    Biome only supported the former. It now supports both.

    Contributed by @Conaclos

  • biome migrate eslint now propagates NodeJS errors to the user.

    This will help users to identify why Biome is unable to load some ESLint configurations.

    Contributed by @Conaclos

  • Add a new --reporter called summary. This reporter will print diagnostics in a different way, based on the tools (formatter, linter, etc.) that are executed.
    Import sorting and formatter shows the name of the files that require formatting. Instead, the linter will group the number of rules triggered and the number of errors/warnings:

    Formatter ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
The following files needs to be formatted:
main.ts
index.ts

Organize Imports ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
The following files needs to have their imports sorted:
main.ts
index.ts

Analyzer ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Some analyzer rules were triggered

Rule Name                                               Diagnostics
lint/suspicious/noImplicitAnyLet                        12 (12 error(s), 0 warning(s), 0 info(s))
lint/suspicious/noDoubleEquals                          8 (8 error(s), 0 warning(s), 0 info(s))
lint/suspicious/noRedeclare                             12 (12 error(s), 0 warning(s), 0 info(s))
lint/suspicious/noDebugger                              20 (20 error(s), 0 warning(s), 0 info(s))

    Contributed by @ematipico

  • biome ci now enforces printing the output using colours. If you were previously using --colors=force, you can remove it because it's automatically set. Contributed by @ematipico

Configuration

New features

  • Add an rule option fix to override the code fix kind of a rule (#2882).

    A rule can provide a safe or an unsafe code action.
    You can now tune the kind of code actions thanks to the fix option.
    This rule option takes a value among:

    • none: the rule no longer emits code actions.
    • safe: the rule emits safe code action.
    • unsafe: the rule emits unsafe code action.

    The following configuration disables the code actions of noUnusedVariables, makes the emitted code actions of style/useConst and style/useTemplate unsafe and safe respectively.

    {
  "linter": {
    "rules": {
      "correctness": {
        "noUnusedVariables": {
          "level": "error",
          "fix": "none"
        },
        "style": {
          "useConst": {
            "level": "warn",
            "fix": "unsafe"
          },
          "useTemplate": {
            "level": "warn",
            "fix": "safe"
          }
        }
      }
    }
  }
}

    Contributed by @Conaclos

  • Add option javascript.linter.enabled to control the linter for JavaScript (and its super languages) files. Contributed by @ematipico

  • Add option json.linter.enabled to control the linter for JSON (and its super languages) files. Contributed by @ematipico

  • Add option css.linter.enabled to control the linter for CSS (and its super languages) files. Contributed by @ematipico

  • Add option css.formatter, to control the formatter options for CSS (and its super languages) files. Contributed by @ematipico

Enhancements

  • The javascript.formatter.trailingComma option is deprecated and renamed to javascript.formatter.trailingCommas. The corresponding CLI option --trailing-comma is also deprecated and renamed to --trailing-commas. Details can be checked in #2492. Contributed by @Sec-ant

Editors

New features

  • Add support for LSP Workspaces

Bug fixes

  • Fixes #2781, by correctly computing the configuration to apply to a specific file. Contributed by @ematipico

Formatter

Bug fixes

  • Fix #2470 by avoid introducing linebreaks in single line string interpolations. Contributed by @ah-yu
  • Resolve deadlocks by narrowing the scope of locks. Contributed by @mechairoi
  • Fix #2782 by computing the enabled rules by taking the override settings into consideration. Contributed by @ematipico

JavaScript APIs

Linter

New features

Read more

Contributors

mechairoi, chansuke, and 29 other contributors
Assets 2

CLI v1.7.3

06 May 10:11
@github-actions github-actions
cli/v1.7.3
b9f90b7
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CLI v1.7.3 Latest
Latest

CLI

Bug fixes

  • The stdin-file-path option now works correctly for Astro/Svelte/Vue files (#2686)

    Fix #2225 where lint output become empty for Vue files.

    Contributed by @tasshi-me

  • biome migrate eslint now correctly resolve @scope/eslint-config (#2705). Contributed by @Conaclos

Linter

New features

Bug fixes

  • noBlankTarget no longer hangs when applying a code fix (#2675).

    Previously, the following code made Biome hangs when applying a code fix.

    <a href="https://example.com" rel="" target="_blank"></a>

    Contributed by @Conaclos

  • noRedeclare no longer panics on conditional type (#2659).

    This is a regression introduced by #2394.
    This regression makes noRedeclare panics on every conditional types with infer bindings.

    Contributed by @Conaclos

  • noUnusedLabels and noConfusingLabels now ignore svelte reactive statements (#2571).

    The rules now ignore reactive Svelte blocks in Svelte components.

    <script>
$: { /* reactive block */ }
</script>

    Contributed by @Conaclos

  • useExportType no longer removes leading comments (#2685).

    Previously, useExportType removed leading comments when it factorized the type qualifier.
    It now provides a code fix that preserves the leading comments:

    - export {
+ export type {
    /**leading comment*/
-   type T
+   T
  }

    Contributed by @Conaclos

  • useJsxKeyInIterable no longer reports false positive when iterating on non-jsx items (#2590).

    The following snipet of code no longer triggers the rule:

    <>{data.reduce((total, next) => total + next, 0)}</>

    Contributed by @dyc3

  • Fix typo by renaming useConsistentBuiltinInstatiation to useConsistentBuiltinInstantiation
    Contributed by @minht11

What's Changed

Other changes

New Contributors

Full Changelog: cli/v1.7.2...cli/v1.7.3

Contributors

arendjr, ematipico, and 11 other contributors
Assets 10

CLI v1.7.2

30 Apr 12:49
@github-actions github-actions
cli/v1.7.2
2c70d3f
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CLI v1.7.2

Analyzer

Bug fixes

  • Import sorting now ignores side effect imports (#817).

    A side effect import consists now in its own group.
    This ensures that side effect imports are not reordered.

    Here is an example of how imports are now sorted:

      import "z"
- import { D } from "d";
  import { C } from "c";
+ import { D } from "d";
  import "y"
  import "x"
- import { B } from "b";
  import { A } from "a";
+ import { B } from "b";
  import "w"

    Contributed by @Conaclos

  • Import sorting now adds spaces where needed (#1665)
    Contributed by @Conaclos

CLI

Bug fixes

  • biome migrate eslint now handles cyclic references.

    Some plugins and configurations export objects with cyclic references.
    This causes biome migrate eslint to fail or ignore them.
    These edge cases are now handled correctly.

    Contributed by @Conaclos

Formatter

Bug fixes

  • Correctly handle placement of comments inside named import clauses. #2566. Contributed by @ah-yu

Linter

New features

Bug fixes

  • noDuplicateJsonKeys no longer crashes when a JSON file contains an unterminated string (#2357).
    Contributed by @Conaclos

  • noRedeclare now reports redeclarations of parameters in a functions body (#2394).

    The rule was unable to detect redeclarations of a parameter or type parameter in the function body.
    The following two redeclarations are now reported:

    function f<T>(a) {
  type T = number; // redeclaration
  const a = 0; // redeclaration
}

    Contributed by @Conaclos

  • noRedeclare no longer reports overloads in object types (#2608).

    The rule no longer report redeclarations in the following code:

    type Overloads = {
  ({ a }: { a: number }): number,
  ({ a }: { a: string }): string,
};

    Contributed by @Conaclos

  • noRedeclare now merge default function export declarations and types (#2372).

    The following code is no longer reported as a redeclaration:

    interface Foo {}
export default function Foo() {}

    Contributed by @Conaclos

  • noUndeclaredVariables no longer reports variable-only and type-only exports (#2637).
    Contributed by @Conaclos

  • [noUnusedVariables] no longer crash Biome when encountering a malformed conditional type (#1695).
    Contributed by @Conaclos

  • useConst now ignores a variable that is read before its assignment.

    Previously, the rule reported the following example:

    let x;
x; // read
x = 0; // write

    It is now correctly ignored.

    Contributed by @Conaclos

  • useShorthandFunctionType now suggests correct code fixes when parentheses are required (#2595).

    Previously, the rule didn't add parentheses when they were needed.
    It now adds parentheses when the function signature is inside an array, a union, or an intersection.

    - type Union = { (): number } | string;
+ type Union = (() => number) | string;

    Contributed by @Conaclos

  • useTemplate now correctly escapes strings (#2580).

    Previously, the rule didn't correctly escape characters preceded by an escaped character.

    Contributed by @Conaclos

  • noMisplacedAssertion now allow these matchers

    • expect.any()
    • expect.anything()
    • expect.closeTo
    • expect.arrayContaining
    • expect.objectContaining
    • expect.stringContaining
    • expect.stringMatching
    • expect.extend
    • expect.addEqualityTesters
    • expect.addSnapshotSerializer

    Contributed by @fujiyamaorange

Parser

Bug fixes

  • The language parsers no longer panic on unterminated strings followed by a newline and a space (#2606, #2410).

    The following example is now parsed without making Biome panics:

    "
 "

    Contributed by @Conaclos

What's Changed

Other changes

New Contributors

Full Changelog: cli/v1.7.1...cli/v1.7.2

Contributors

arendjr, ematipico, and 17 other contributors
Assets 10

CLI v1.7.1

22 Apr 15:47
@github-actions github-actions
cli/v1.7.1
d6f1f2b
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CLI v1.7.1

Editors

Bug fixes

  • Fix #2403 by printing the errors in the client console. Contributed by @ematipico

Formatter

Bug fixes

  • Add parentheses for the return expression that has leading multiline comments. #2504. Contributed by @ah-yu

  • Correctly format dangling comments of continue statements. #2555. Contributed by @ah-yu

Linter

Bug fixes

  • Fix case where jsxRuntime wasn't being respected by useImportType rule (#2473).Contributed by @arendjr
  • Fix #2460, where the rule noUselessFragments was crashing the linter in some cases. Now cases like these are correctly handled: 
    callFunction(<>{bar}</>)
    Contributed by @ematipico
  • Fix #2366, where noDuplicateJsonKeys incorrectly computed the kes to highlight. Contributed by @ematipico

Enhancements

  • The rule noMisplacedAssertions now considers valid calling expect inside waitFor: 
    import { waitFor } from '@testing-library/react';

await waitFor(() => {
  expect(111).toBe(222);
});
    Contributed by @ematipico

What's Changed

Other changes

New Contributors

Full Changelog: cli/v1.7.0...cli/v1.7.1

Contributors

chansuke, arendjr, and 17 other contributors
Assets 10

CLI v1.7.0

15 Apr 12:38
@github-actions github-actions
cli/v1.7.0
2dce6af
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CLI v1.7.0

Analyzer

Bug fixes

  • Now Biome can detect the script language in Svelte and Vue script blocks more reliably (#2245). Contributed by @Sec-ant

  • useExhaustiveDependencies no longer reports recursive calls as missing
    dependencies (#2361).
    Contributed by @arendjr

  • useExhaustiveDependencies correctly reports missing dependencies declared
    using function declarations (#2362).
    Contributed by @arendjr

  • Biome now can handle .svelte and .vue files with CRLF as the end-of-line sequence. Contributed by @Sec-ant

  • noMisplacedAssertion no longer reports method calls by describe, test, it objects (e.g. test.each([])()) (#2443). Contributed by @unvalley.

  • Biome now can handle .vue files with generic components (#2456).

    <script generic="T extends Record<string, any>" lang="ts" setup>
//...
</script>

    Contributed by @Sec-ant

Enhancements

  • Complete the well-known file lists for JSON-like files. Trailing commas are allowed in .jsonc files by default. Some well-known files like tsconfig.json and .babelrc don't use the .jsonc extension but still allow comments and trailing commas. While others, such as .eslintrc.json, only allow comments. Biome is able to identify these files and adjusts the json.parser.allowTrailingCommas option accordingly to ensure they are correctly parsed. Contributed by @Sec-ant

  • Fix dedent logic inconsistent with prettier where the indent-style is space and the indent-width is not 2. Contributed by @mdm317

CLI

New features

  • Add a command to migrate from ESLint

    biome migrate eslint allows you to migrate an ESLint configuration to Biome.
    The command supports legacy ESLint configurations and new flat ESLint configurations.
    Legacy ESLint configurations using the YAML format are not supported.

    When loading a legacy ESLint configuration, Biome resolves the extends field.
    It resolves both shared configurations and plugin presets!
    To do this, it invokes Node.js.

    Biome relies on the metadata of its rules to determine the equivalent rule of an ESLint rule.
    A Biome rule is either inspired or roughly identical to an ESLint rules.
    By default, inspired and nursery rules are excluded from the migration.
    You can use the CLI flags --include-inspired and --include-nursery to migrate them as well.

    Note that this is a best-effort approach.
    You are not guaranteed to get the same behavior as ESLint.

    Given the following ESLint configuration:

    {
      "ignore_patterns": ["**/*.test.js"],
      "globals": { "var2": "readonly" },
      "rules": {
          "eqeqeq": "error"
      },
      "overrides": [{
          "files": ["lib/*.js"],
          "rules": {
            "default-param-last": "off"
          }
      }]
}

    biome migrate eslint --write changes the Biome configuration as follows:

    {
  "linter": {
    "rules": {
      "recommended": false,
      "suspicious": {
        "noDoubleEquals": "error"
      }
    }
  },
  "javascript": { "globals": ["var2"] },
  "overrides": [{
    "include": ["lib/*.js"],
    "linter": {
      "rules": {
        "style": {
          "useDefaultParameterLast": "off"
        }
      }
    }
  }]
}

    Also, if the working directory contains .eslintignore, then Biome migrates the glob patterns.
    Nested .eslintignore in subdirectories and negated glob patterns are not supported.

    If you find any issue, please don't hesitate to report them.

    Contributed by @Conaclos

  • Added two new options to customise the emitted output of the CLI: --reporter=json and --reporter=json-pretty. With --reporter=json, the diagnostics and the
    summary will be printed in the terminal in JSON format. With --reporter=json-pretty, you can print the same information, but formatted using the same options of your configuration.

    NOTE: the shape of the JSON is considered experimental, and the shape of the JSON might change in the future.

    Example of output when running `biome format` command ```json { "summary": { "changed": 0, "unchanged": 1, "errors": 1, "warnings": 0, "skipped": 0, "suggestedFixesSkipped": 0, "diagnosticsNotPrinted": 0 }, "diagnostics": [ { "category": "format", "severity": "error", "description": "Formatter would have printed the following content:", "message": [ { "elements": [], "content": "Formatter would have printed the following content:" } ], "advices": { "advices": [ { "diff": { "dictionary": " statement();\n", "ops": [ { "diffOp": { "delete": { "range": [0, 2] } } }, { "diffOp": { "equal": { "range": [2, 12] } } }, { "diffOp": { "delete": { "range": [0, 2] } } }, { "diffOp": { "equal": { "range": [12, 13] } } }, { "diffOp": { "delete": { "range": [0, 2] } } }, { "diffOp": { "insert": { "range": [13, 15] } } } ] } } ] }, "verboseAdvices": { "advices": [] }, "location": { "path": { "file": "format.js" }, "span": null, "sourceCode": null }, "tags": [], "source": null } ], "command": "format" } ```

  • Added new --staged flag to the check, format and lint subcommands.

    This new option allows users to apply the command only to the files that are staged (the
    ones that will be committed), which can be very useful to simplify writing git hook scripts
    such as pre-commit. Contributed by @castarco

Enhancements

  • Improve support of .prettierignore when migrating from Prettier

    Now, Biome translates most of the glob patterns in .prettierignore to the equivalent Biome ignore pattern.
    Only negated glob patterns are not supported.

    Contributed by @Conaclos

  • Support JavaScript configuration files when migrating from Prettier

    biome migrate prettier is now able to migrate Prettier configuration files
    ending with js, mjs, or cjs extensions.
    To do this, Biome invokes Node.js.

    Also, embedded Prettier configurations in package.json are now supported.

    Contributed by @Conaclos

  • Support overrides field in Prettier configuration files when migrating from Prettier.
    Contributed by @Conaclos

  • Support passing a file path to the --config-path flag or the BIOME_CONFIG_PATH environment variable.

    Now you can pass a .json/.jsonc file path with any filename to the --config-path flag or the
    BIOME_CONFIG_PATH environment variable. This will disable the configuration auto-resolution and Biome
    will try to read the configuration from the said file path (#2265).

    biome format --config-path=../biome.json ./src

    Contributed by @Sec-ant

Bug fixes

  • Biome now tags the diagnostics emitted by organizeImports and formatter with correct severity levels, so they will be properly filtered by the flag --diagnostic-level (#2288). Contributed by @Sec-ant

  • Biome now correctly filters out files that are not present in the current directory when using the --changed flag #1996. Contributed by @castarco

  • Biome now skips traversing fifo or socket files (#2311). Contributed by @Sec-ant

  • Biome now resolves configuration files exported from external libraries in extends from the working directory (CLI) or project root (LSP). This is the documented behavior and previous resolution behavior is considered as a bug (#2231). Contributed by @Sec-ant

Configuration

Bug fixes

  • Now setting group level all to false can disable recommended rules from that group when top level recommended is true or unset. Contributed by @Sec-ant

  • Biome configuration files can correctly extends .jsonc configuration files now (#2279). Contributed by @Sec-ant

  • Fixed the JSON schema for React hooks configuration (#2396). Contributed by @arendjr

Enhancements

  • Biome now displays the location of a parsing error for its configuration file (#1627).

    Previously, when Biome encountered a parsing error in its configuration file,
    it didn't indicate the location of the error.
    It now displays the name of the configuration file and the range where the error occurred.

    Contributed by @Conaclos

  • options is no longer required for rules without any options (#2313).

    Previously, the JSON schema required to set options to null when an object is used to set the diagnostic level of a rule without any option.
    However, if options is set to null, Biome emits an error.

    The schema is now fixed and it no longer requires specifying options.
    This makes the following configuration valid:

    {
  "linter": {
    "rules": {
      "styl...
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Contributors

castarco, ganta, and 21 other contributors
Assets 10

CLI v1.6.4

03 Apr 10:57
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cli/v1.6.4
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CLI v1.6.4

Analyzer

Bug fixes

  • An operator with no spaces around in a binary expression no longer breaks the js analyzer (#2243). Contributed by @Sec-ant

CLI

Bug fixes

Configuration

Bug fixes

  • Correctly calculate enabled rules in lint rule groups. Now a specific rule belonging to a group can be enabled even if its group-level preset option recommended or all is false (#2191). Contributed by @Sec-ant

Editors

Bug fixes

  • Fix the unexpected code deletion and repetition when quickfix.biome is enabled and some import-related rules are applied (#2222, #688, #1015). Contributed by @Sec-ant

Linter

Bug fixes

  • Fix #2211. noChildrenProp should work fine when children pass as a prop in a new line. Contributed by @fireairforce

  • Fix #2248. lint/a11y/useButtonType should not trigger when button element with spread attribute. Contributed by @fireairforce

  • Fix #2216. lint/style/useNamingConvention should not ignore JSX Component name binding. Contributed by @fireairforce

Enhancements

  • Add support for object property members in the rule useSortedClasses. Contributed by @ematipico

Parser

  • The parser doesn't throw any error when the frontmatter of .astro files contains an illegal return:

    ---
const condition = true;
if (condition) {
  return "Something";
}
---
<div></div>

    Contributed by @ematipico

What's Changed

Other changes

New Contributors

Full Changelog: cli/v1.6.3...cli/v1.6.4

Contributors

arendjr, ematipico, and 13 other contributors
Assets 10

CLI v1.6.3

25 Mar 17:20
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cli/v1.6.3
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CLI v1.6.3

Analyzer

CLI

Bug fixes

  • Fix configuration resolution. Biome is now able to correctly find the biome.jsonc configuration file when --config-path is explicitly set (#2164). Contributed by @Sec-ant

  • JavaScript/TypeScript files of different variants (.ts, .js, .tsx, .jsx) in a single workspace now have stable formatting behaviors when running the CLI command in paths of different nested levels or in different operating systems (#2080, #2109). Contributed by @Sec-ant

Configuration

Bug fixes

  • Complete the documentation and overrides support for options formatter.lineEnding, [language].formatter.lineEnding, formatter.attributePosition and javascript.formatter.attributePosition. Contributed by @Sec-ant

Editors

Formatter

Bug fixes

  • Fix #2172 by breaking long object destructuring patterns. Contributed by @ah-yu

JavaScript APIs

Linter

New features

LSP

Bug fixes

  • Quickfix action no longer autofixes lint rule errors on save when linter is disabled (#2161). Contributed by @Sec-ant
  • Range formatting for Astro/Svelte/Vue doesn't place code out of place, especially when formatting on paste is enabled. Contributed by @ematipico

Parser

What's Changed

Other changes

New Contributors

Full Changelog: cli/v1.6.2...cli/v1.6.3

Contributors

arendjr, ematipico, and 6 other contributors
Assets 10

CLI v1.6.2

22 Mar 08:57
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CLI v1.6.2

Analyzer

Bug fixes

  • The noSuperWithoutExtends rule now allows for calling super() in derived class constructors of class expressions (#2108). Contributed by @Sec-ant

  • Fix discrepancies on file source detection. Allow module syntax in .cts files (#2114). Contributed by @Sec-ant

CLI

Bug fixes

  • Fixes #2131, where folders were incorrectly ignored when running the command check. Now folders are correctly ignored based on their command. Contributed by @ematipico

  • Smoother handling of "endOfLine": "auto" in prettier migration: falling back to "lf" (#2145). Contributed by @eMerzh

Configuration

Bug fixes

  • Fix enabled rules calculation. The precendence of individual rules, all and recommend presets in top-level and group-level configs is now correctly respected. More details can be seen in (#2072) (#2028). Contributed by @Sec-ant

Formatter

Bug fixes

  • Fix #1661. Now nested conditionals are aligned with Prettier's logic, and won't contain mixed spaces and tabs. Contributed by @ematipico

JavaScript APIs

Enhancements

  • Support applying lint fixes when calling the lintContent method of the Biome class (#1956). Contributed by @mnahkies

Linter

Bug fixes

  • Rule noUndeclaredDependencies now also validates peerDependencies and optionalDependencies (#2122). Contributed by @Sec-ant

  • Rule noUndeclaredDependencies won't check declare module statements anymore (#2123). Contributed by @Sec-ant

  • Fix #1925. The fix for useOptionalChain would sometimes suggest an incorrect fix that discarded optional chaining operators on the left-hand side of logical expressions. These are now preserved. Contributed by @arendjr

  • Rule noUndeclaredVariables now also checks for worker globals (#2121). Contributed by @Sec-ant

LSP

Bug fixes

  • Correctly parse .jsonc files. Contributed by @Sec-ant

  • Correctly resolve external extends configs. Contributed by @Sec-ant

Full Changelog: js-api/v0.5.0...cli/v1.6.2

Contributors

eMerzh, arendjr, and 3 other contributors
Assets 10

CLI v1.6.1

12 Mar 11:48
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cli/v1.6.1
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CLI v1.6.1

CLI

Bug fixes

  • CLI is now able to automatically search and resolve biome.jsonc (#2008). Contributed by @Sec-ant
  • Fix a false positive where some files were counted as "fixed" even though they weren't modified. Contributed by @ematipico

Configuration

Bug fixes

  • json.formatter.trailingCommas option now works in overrides (#2009). Contributed by @Sec-ant

Linter

New features

  • Add rule noDoneCallback, this rule checks the function parameter of hooks & tests
    for use of the done argument, suggesting you return a promise instead. Contributed by @vasucp1207

    beforeEach(done => {
  // ...
});

Bug fixes

  • useJsxKeyInIterable now recognizes function bodies wrapped in parentheses (#2011). Contributed by @Sec-ant

  • useShorthandFunctionType now preserves type parameters of generic interfaces when applying fixes (#2015). Contributed by @Sec-ant

  • Code fixes of useImportType and useExportType now handle multiline statements (#2041). Contributed by @Conaclos

  • noRedeclare no longer reports type parameter and parameter with identical names (#1992).

    The following code is no longer reported:

    function f<a>(a: a) {}

    Contributed by @Conaclos

  • noRedeclare now reports duplicate type parameters in a same declaration.

    The following type parameters are now reported as a redeclaraion:

    function f<T, T>() {}

    Contributed by @Conaclos

  • noUndeclaredDependencies now recognizes imports of subpath exports.

    E.g., the following import statements no longer report errors if @mui/material and tailwindcss are installed as dependencies:

    import Button from "@mui/material/Button";
import { fontFamily } from "tailwindcss/defaultTheme";

    Contributed by @Sec-ant

Parser

Bug fixes

  • JavaScript lexer is now able to lex regular expression literals with escaped non-ascii chars (#1941).

    Contributed by @Sec-ant

What's Changed

Other changes

New Contributors

Full Changelog: cli/v1.5.3-nightly.4fa841c...cli/v1.6.1

Contributors

chansuke, arendjr, and 9 other contributors
Assets 10