noUndeclaredVariables not properly handling type import

[KurtPreston]

Environment information

CLI:
  Version:                      1.7.3
  Color support:                true

Platform:
  CPU Architecture:             x86_64
  OS:                           linux

Environment:
  BIOME_LOG_DIR:                unset
  NO_COLOR:                     unset
  TERM:                         "xterm-256color"
  JS_RUNTIME_VERSION:           "v20.12.2"
  JS_RUNTIME_NAME:              "node"
  NODE_PACKAGE_MANAGER:         "npm/10.5.0"

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

Linter:
  Recommended:                  false
  All:                          false
  Rules:                        a11y/noBlankTarget = "off"
                                complexity/noExtraBooleanCast = "off"
                                complexity/noForEach = "off"
                                complexity/noMultipleSpacesInRegularExpressionLiterals = "error"
                                complexity/noStaticOnlyClass = "off"
                                complexity/noUselessCatch = "error"
                                complexity/noUselessConstructor = "error"
                                complexity/noUselessLoneBlockStatements = "error"
                                complexity/noUselessSwitchCase = "off"
                                complexity/noWith = "error"
                                complexity/useFlatMap = "error"
                                correctness/noChildrenProp = "off"
                                correctness/noConstAssign = "error"
                                correctness/noConstantCondition = "off"
                                correctness/noEmptyCharacterClassInRegex = "error"
                                correctness/noEmptyPattern = "off"
                                correctness/noGlobalObjectCalls = "error"
                                correctness/noInnerDeclarations = "off"
                                correctness/noInvalidConstructorSuper = "error"
                                correctness/noNewSymbol = "error"
                                correctness/noNonoctalDecimalEscape = "error"
                                correctness/noPrecisionLoss = "error"
                                correctness/noSelfAssign = "error"
                                correctness/noSetterReturn = "error"
                                correctness/noSwitchDeclarations = "off"
                                correctness/noUndeclaredVariables = "error"
                                correctness/noUnreachable = "error"
                                correctness/noUnreachableSuper = "error"
                                correctness/noUnsafeFinally = "error"
                                correctness/noUnsafeOptionalChaining = "error"
                                correctness/noUnusedLabels = "error"
                                correctness/noUnusedVariables = "error"
                                correctness/useExhaustiveDependencies = "warn"
                                correctness/useHookAtTopLevel = "error"
                                correctness/useIsNan = "error"
                                correctness/useJsxKeyInIterable = "error"
                                correctness/useValidForDirection = "error"
                                correctness/useYield = "error"
                                security/noDangerouslySetInnerHtml = "off"
                                security/noGlobalEval = "error"
                                style/noCommaOperator = "error"
                                style/noImplicitBoolean = "off"
                                style/noNegationElse = "off"
                                style/noRestrictedGlobals = {"level":"error","options":{"deniedGlobals":["bbenchmark","alert","event","fdescribe","fit","isFinite","length","name","open","performance","setInterval","ssuite","status"]}}
                                style/noVar = "error"
                                style/useBlockStatements = "error"
                                style/useConst = "error"
                                style/useForOf = "off"
                                style/useNodejsImportProtocol = "off"
                                style/useNumberNamespace = "off"
                                suspicious/noAsyncPromiseExecutor = "off"
                                suspicious/noCatchAssign = "off"
                                suspicious/noClassAssign = "error"
                                suspicious/noCommentText = "error"
                                suspicious/noCompareNegZero = "error"
                                suspicious/noControlCharactersInRegex = "error"
                                suspicious/noDebugger = "error"
                                suspicious/noDoubleEquals = "error"
                                suspicious/noDuplicateCase = "error"
                                suspicious/noDuplicateClassMembers = "error"
                                suspicious/noDuplicateJsxProps = "error"
                                suspicious/noDuplicateObjectKeys = "error"
                                suspicious/noDuplicateParameters = "error"
                                suspicious/noEmptyBlockStatements = "off"
                                suspicious/noFallthroughSwitchClause = "error"
                                suspicious/noFunctionAssign = "error"
                                suspicious/noGlobalAssign = "error"
                                suspicious/noImportAssign = "error"
                                suspicious/noMisleadingCharacterClass = "error"
                                suspicious/noPrototypeBuiltins = "off"
                                suspicious/noRedeclare = "error"
                                suspicious/noShadowRestrictedNames = "off"
                                suspicious/noThenProperty = "off"
                                suspicious/noUnsafeNegation = "error"
                                suspicious/useGetterReturn = "off"
                                suspicious/useIsArray = "error"
                                suspicious/useValidTypeof = "error"

Workspace:
  Open Documents:               0

Rule name

noUndeclaredVariables

Playground link

https://biomejs.dev/playground/?lintRules=all&code=aQBtAHAAbwByAHQAIAB0AHkAcABlACAAewBHAHIAbwB1AHAAZQBkAEkAdABlAG0ALAAgAE0AWQBfAEEAVABUAFIASQBCAFUAVABFAH0AIABmAHIAbwBtACAAJwAuAC8AdAB5AHAAZQBzACcAOwAKAAoAZQB4AHAAbwByAHQAIAB0AHkAcABlACAARwByAG8AdQBwAEkAdABlAG0AVwBpAHQAaABEAGUAbgBzAGkAdAB5AFAAYQB0AGgAcwA8AFQAPgAgAD0AIABHAHIAbwB1AHAAZQBkAEkAdABlAG0APABUAD4AIAAmACAAewAKACAAIABbAE0AWQBfAEEAVABUAFIASQBCAFUAVABFAF0APwA6ACAAewBbAGsAOgAgAHMAdAByAGkAbgBnAF0AOgAgAGIAbwBvAGwAZQBhAG4AfQA7AAoAfQA7AA%3D%3D

Expected result

I have the following TypeScript code:

import type {GroupedItem, MY_ATTRIBUTE} from './types';

export type GroupItemWithExtraAttribute<T> = GroupedItem<T> & {
  [MY_ATTRIBUTE]?: {[k: string]: boolean};
};

This is valid TypeScript code, however, Biome reports two errors:

The MY_ATTRIBUTE variable is undeclared.
This import is unused.

Code of Conduct

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[Conaclos]

This is an issue coning from the semantic model. MY_ATTRIBUTE is declared as a type and its use is resolved as a variable.