[no-unnecessary-type-arguments] throws

[fabiospampinato]

Repro

{
  "rules": {
	"@typescript-eslint/no-unnecessary-type-arguments": "error"
  }
}

type SveltoWidgetRef<T> = import ( 'react' ).RefObject<T>;

Expected Result

It shouldn't throw.

Actual Result

It throws.

Additional Info

This is the error:

Error: Debug Failure. Branch in 'resolveSignature' should be unreachable. SyntaxKind: ImportType
Occurred while linting /Users/fabio/Projects/notable/src/types.d.ts:434
    at resolveSignature (/Users/fabio/Projects/notable/node_modules/typescript/lib/typescript.js:52930:28)
    at getResolvedSignature (/Users/fabio/Projects/notable/node_modules/typescript/lib/typescript.js:52950:26)
    at getResolvedSignatureWorker (/Users/fabio/Projects/notable/node_modules/typescript/lib/typescript.js:32457:30)
    at Object.getResolvedSignature (/Users/fabio/Projects/notable/node_modules/typescript/lib/typescript.js:32320:24)
    at getTypeParametersFromCall (/Users/fabio/Projects/notable/node_modules/@typescript-eslint/eslint-plugin/dist/rules/no-unnecessary-type-arguments.js:100:25)
    at getTypeParametersFromNode (/Users/fabio/Projects/notable/node_modules/@typescript-eslint/eslint-plugin/dist/rules/no-unnecessary-type-arguments.js:82:12)
    at getArgsAndParameters (/Users/fabio/Projects/notable/node_modules/@typescript-eslint/eslint-plugin/dist/rules/no-unnecessary-type-arguments.js:70:28)
    at TSTypeParameterInstantiation (/Users/fabio/Projects/notable/node_modules/@typescript-eslint/eslint-plugin/dist/rules/no-unnecessary-type-arguments.js:61:39)
    at listeners.(anonymous function).forEach.listener (/Users/fabio/Projects/notable/node_modules/eslint/lib/linter/safe-emitter.js:45:58)
    at Array.forEach (<anonymous>)

Debug Dump

// lots of other lines about other files before this
  eslint:ignored-paths contains: +81ms
  eslint:ignored-paths   target   = "/Users/fabio/Projects/notable/src/types.d.ts" +0ms
  eslint:ignored-paths   base     = "/Users/fabio/Projects/notable" +0ms
  eslint:ignored-paths   relative = "src/types.d.ts" +0ms
  eslint:ignored-paths   result   = false +0ms
  eslint:file-enumerator Yield: types.d.ts +0ms
  eslint:cli-engine Lint /Users/fabio/Projects/notable/src/types.d.ts +81ms
  eslint:linter Linting code for /Users/fabio/Projects/notable/src/types.d.ts (pass 1) +1ms
  eslint:linter Verify +1ms
  eslint:linter With ConfigArray: /Users/fabio/Projects/notable/src/types.d.ts +1ms
  eslint:linter An error occurred while traversing +80ms
  eslint:linter Filename: /Users/fabio/Projects/notable/src/types.d.ts +0ms
  eslint:linter Line: 434 +0ms
  eslint:linter Parser Options: { ecmaVersion: 11,
  ecmaFeatures: { globalReturn: false, jsx: true },
  project: 'tsconfig.json',
  sourceType: 'module',
  useJSXTextNode: true } +0ms
  eslint:linter Parser Path: /Users/fabio/Projects/notable/node_modules/@typescript-eslint/parser/dist/parser.js +2ms
  eslint:linter Settings: { react: { pragma: 'React', version: 'detect' } } +0ms
Debug Failure. Branch in 'resolveSignature' should be unreachable. SyntaxKind: ImportType
Occurred while linting /Users/fabio/Projects/notable/src/types.d.ts:434

Versions

package	version
@typescript-eslint/eslint-plugin	2.3.4-alpha.5
@typescript-eslint/parser	2.3.3
TypeScript	3.6.4
ESLint	6.5.1
node	10.15.0
npm	6.4.1

[glen-84]

@bradzacher Can this be labelled as a bug?