===== AST after reference-resolving =====
ArbitrarilyLargeNumbers(a):
TreeList
  BinaryOperation Assignment
    Var a
    MathematicalConstant 1
  BinaryOperation Assignment
    Var b
    MathematicalConstant 3.6
  BinaryOperation Assignment
    Var c
    MathematicalConstant -3.6
  BinaryOperation Assignment
    Var d
    MathematicalConstant -1000000000000000000000
  BinaryOperation Assignment
    Var e
    MathematicalConstant 10000001/10000000
  ReturnNode
    BinaryOperation Plus
      Var a
      BinaryOperation Plus
        Var b
        BinaryOperation Plus
          Var c
          BinaryOperation Plus
            Var d
            Var e

WellKnownConstants(a):
TreeList
  IfElseIfChain
    IsOneOf
      Var a
      WellKnownNode Undefined
    TreeList
      BinaryOperation Assignment
        Var b
        WellKnownNode Null
      ReturnNode
        WellKnownNode True
    TreeList
      BinaryOperation Assignment
        Var c
        WellKnownNode This
      ReturnNode
        WellKnownNode False

TestReturnIfAbrupt(a):
TreeList
  ReturnNode
    UnaryOperation ReturnIfAbrubt
      FunctionCall
        Func "WellKnownConstants"
        Var a