================================================================================
errors/forGeneratorDuplicateParams1
================================================================================

a = List(1, 2, 3, 4)

foo {
  for (i, i in a) {
    i
  }
}

--------------------------------------------------------------------------------

(module
  (classProperty
    (identifier)
    (methodCallExpr
      (identifier)
      (argumentList
        (intLiteral)
        (intLiteral)
        (intLiteral)
        (intLiteral))))
  (classProperty
    (identifier)
    (objectBody
      (forGenerator
        (typedIdentifier
          (identifier))
        (typedIdentifier
          (identifier))
        (variableExpr
          (identifier))
        (objectBody
          (objectElement
            (variableExpr
              (identifier))))))))
