biomejs/biome cli/v1.6.4-nightly.abab451 on GitHub

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

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

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

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

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 --diagnositic-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

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

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": {
      "style": {
        "noDefaultExport": {
          "level": "off"
        }
      }
    }
  }
}
```
Contributed by @Conaclos

Editors

Bug fixes

Biome extension is now able to parse the JSX syntax in files that associated with the javascript language identifier. This is an ad hoc fix, because in the React world, .js files are allowed to include JSX syntax, and these files are often associated with the javascript language identifier in most of the editors. Plus, some editor extensions will also associate .jsx files with the javascript language identifier. Relative links: discussion, #2085. Contributed by @Sec-ant

Formatter

JavaScript APIs

Linter

New features

Add a new option ignoreReact to noUnusedImports.
When ignoreReact is enabled, Biome ignores imports of React from the react package.
The option is disabled by default.
Contributed by @Conaclos
Implement #2043: The React rule useExhaustiveDependencies is now also compatible with Preact hooks imported from preact/hooks or preact/compat. Contributed by @arendjr

Enhancements

style/useFilenamingConvention now allows prefixing a filename with + (#2341).
This is a convention used by Sveltekit and Vike.
Contributed by @Conaclos
style/useNamingConvention now accepts PascalCase for local and top-level variables.
This allows supporting local variables that hold a component or a regular class.
The following code is now accepted:
```
function loadComponent() {
  const Component = getComponent();
  return <Component />;
}
```
Contributed by @Conaclos

Bug fixes

Lint rules useNodejsImportProtocol, useNodeAssertStrict, noRestrictedImports, noNodejsModules will no longer check declare module statements anymore. Contributed by @Sec-ant
style/useNamingConvention now accepts any case for variables from object destructuring (#2332).
The following name is now ignored:
```
const { Strange_Style } = obj;
```
Previously, the rule renamed this variable. This led to a runtime error.
Contributed by @Conaclos

Parser

What's Changed

Other changes

chore: derive Diagnostic on enum by @arendjr in #2282
chore(deps): update dependency vite to v5.1.7 [security] by @renovate in #2290
feat(css_formatter): ValueListLayout::SingleLine by @denbezrukov in #2226
Describe multi-root workspace limitation in docs by @smikitky in #2297
refactor(project): new crate biome_configuration by @unvalley in #2269
refactor(biome_deserialize): replace is_type() with visitable_type() by @Conaclos in #2310
feat: graphql lexer by @vohoanglong0107 in #2271
docs: add warning around nested config by @ematipico in #2318
feat(cli): generic reporter APIs by @ematipico in #853
fix(js_analyzer): add graphics-symbol role by @drwpow in #2294
chore(ci): add update contributors workflow by @Sec-ant in #2333
chore(website): update contributors by @github-actions in #2334
fix(lint): noSvgWithoutTitle valid case to use aria-hidden correctly by @unvalley in #2340
fix(lint/useExhaustiveDependencies): unintended application of stable custom hook rules by @fluffy-takagi in #2328
chore(website): update contributors by @github-actions in #2344
chore(deps): pin dependencies by @renovate in #2345
chore(deps): update @biomejs packages by @renovate in #2346
chore(deps): update pnpm to v8.15.6 by @renovate in #2347
chore(ci): remove bots from contributors by @Sec-ant in #2349
chore(website): update contributors by @github-actions in #2352
chore(deps): update dependency dprint to v0.45.1 by @renovate in #2354
chore(deps): update rust crate serde_json to 1.0.115 by @renovate in #2351
chore(deps): update rust crate quote to 1.0.35 by @renovate in #2348
chore(deps): update rust crate regex to 1.10.4 by @renovate in #2350
chore(deps): update dependency eslint to v8.57.0 by @renovate in #2355
chore(deps): update rust crate bitflags to 2.5.0 by @renovate in #2356
refactor(linter): allow multiple rule sources by @Conaclos in #2336
chore(use-number-namespace.md): fix typo by @arienshibani in #2155
chore(website): update contributors by @github-actions in #2373
Add operation parsing rule for GraphQL parser by @vohoanglong0107 in #2327
docs(website): Getting Started and Formatter improvements by @Conaclos in #2379
chore(website): add yaml & graphql to language support & sync table rows by @afonsojramos in #2363
chore(website): update contributors by @github-actions in #2391

New Contributors

@smikitky made their first contribution in #2297
@castarco made their first contribution in #2319
@drwpow made their first contribution in #2294
@github-actions made their first contribution in #2334
@fluffy-takagi made their first contribution in #2328
@arienshibani made their first contribution in #2155
@afonsojramos made their first contribution in #2363

Full Changelog: cli/v1.6.4...cli/v1.6.4-nightly.abab451

biomejs/biome cli/v1.6.4-nightly.abab451 CLI v1.6.4-nightly.abab451 on GitHub

Analyzer

Bug fixes

Enhancements

CLI

New features

Enhancements

Bug fixes

Configuration

Bug fixes

Enhancements

Editors

Bug fixes

Formatter

JavaScript APIs

Linter

New features

Enhancements

Bug fixes

Parser

What's Changed

Other changes

New Contributors

biomejs/biome cli/v1.6.4-nightly.abab451
CLI v1.6.4-nightly.abab451

on GitHub