💅 useStrictMode mangles leading comments and shebangs in .cjs files

[simon-paris]

Environment information

CLI:
  Version:                      1.9.4
  Color support:                true

Platform:
  CPU Architecture:             aarch64
  OS:                           macos

Environment:
  BIOME_LOG_PATH:               unset
  BIOME_LOG_PREFIX_NAME:        unset
  BIOME_CONFIG_PATH:            unset
  NO_COLOR:                     unset
  TERM:                         "xterm-256color"
  JS_RUNTIME_VERSION:           "v22.12.0"
  JS_RUNTIME_NAME:              "node"
  NODE_PACKAGE_MANAGER:         "yarn/1.22.22"

Biome Configuration:
  Status:                       Loaded successfully
  Formatter disabled:           false
  Linter disabled:              false
  Organize imports disabled:    true
  VCS disabled:                 false

Linter:
  JavaScript enabled:           true
  JSON enabled:                 true
  CSS enabled:                  true
  GraphQL enabled:              false
  Recommended:                  true
  All:                          false
  Enabled rules:
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  suspicious/noUnsafeNegation
  suspicious/useNamespaceKeyword
  a11y/useValidLang
  complexity/noUselessEmptyExport
  complexity/noMultipleSpacesInRegularExpressionLiterals
  suspicious/useValidTypeof
  a11y/useValidAriaRole
  correctness/noConstantCondition
  a11y/useAriaActivedescendantWithTabindex
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  suspicious/noDuplicateSelectorsKeyframeBlock
  complexity/noEmptyTypeParameters
  correctness/noConstructorReturn
  style/useSelfClosingElements
  correctness/noUnknownProperty
  style/useTemplate
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  suspicious/noCompareNegZero
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  suspicious/noControlCharactersInRegex
  complexity/noUselessTypeConstraint
  style/noVar
  suspicious/noDoubleEquals
  suspicious/noRedundantUseStrict
  style/useLiteralEnumMembers
  suspicious/noGlobalIsNan
  suspicious/noEmptyInterface
  suspicious/noMisleadingCharacterClass
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  suspicious/noRedeclare
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  correctness/noInvalidConstructorSuper
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  complexity/noUselessThisAlias
  complexity/noThisInStatic
  correctness/noInnerDeclarations
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  suspicious/noImportantInKeyframe
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  complexity/noUselessCatch
  correctness/noUnsafeFinally
  a11y/useAriaPropsForRole
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  style/useEnumInitializers
  a11y/useHtmlLang
  complexity/noStaticOnlyClass
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  complexity/useSimpleNumberKeys
  suspicious/noImportAssign
  a11y/noInteractiveElementToNoninteractiveRole
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  security/noGlobalEval
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  style/useNodejsImportProtocol
  a11y/noDistractingElements
  complexity/noWith
  nursery/useStrictMode
  complexity/noExtraBooleanCast
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  correctness/noVoidTypeReturn
  correctness/noInvalidUseBeforeDeclaration
  a11y/noAriaHiddenOnFocusable
  a11y/useGenericFontNames
  a11y/useAnchorContent
  complexity/noUselessRename
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  style/useExponentiationOperator
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  suspicious/noExportsInTest
  a11y/noNoninteractiveElementToInteractiveRole
  style/noCommaOperator
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  suspicious/useIsArray
  a11y/noHeaderScope
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  suspicious/noMisrefactoredShorthandAssign
  suspicious/noEmptyBlock
  suspicious/noClassAssign
  suspicious/noFunctionAssign

Workspace:
  Open Documents:               0

Rule name

useStrictMode

Playground link

https://biomejs.dev/playground/?lintRules=all&files.main.cjs=LwAvACAAYwBvAG0AbQBlAG4AdAA%3D

Expected result

When the input file has extension .cjs, and does not have a "use strict" directive, and the first line of the file is a comment or a shebang, it will apply an incorrect fix.

With leading comments -

Input file:

// leading comment

After applying fix:

// leading comment
"use strict"; // leading comment

With shebang -

Input file:

#!/usr/bin/env node

After applying fix:

#!/usr/bin/env node"use strict";

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