================================================================================
errors/forGeneratorDuplicateParams2
================================================================================

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

b = List("a", "b", "c", "d")

foo {
  for (_dup, i in a) {
    for (_dup, j in b) {
      i + j
    }
  }
}

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

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