--- parse tree ---
[ Code
    "test/typ/compiler/return-01.typ"
    ( line 1 , column 2 )
    (Let
       (BasicBind (Just (Identifier "test")))
       (FuncExpr
          [ NormalParam (Identifier "x") , NormalParam (Identifier "y") ]
          (Block
             (CodeBlock
                [ If
                    [ ( Equals (Ident (Identifier "x")) (Ident (Identifier "y"))
                      , Block (Content [ Text "\9989" ])
                      )
                    , ( Literal (Boolean True)
                      , Block
                          (Content
                             [ Text "\10060"
                             , Text "("
                             , Code
                                 "test/typ/compiler/return-01.typ"
                                 ( line 1 , column 47 )
                                 (FuncCall
                                    (Ident (Identifier "repr"))
                                    [ NormalArg (Ident (Identifier "x")) ])
                             , Space
                             , Text "/"
                             , Text "="
                             , Space
                             , Code
                                 "test/typ/compiler/return-01.typ"
                                 ( line 1 , column 59 )
                                 (FuncCall
                                    (Ident (Identifier "repr"))
                                    [ NormalArg (Ident (Identifier "y")) ])
                             , Text ")"
                             ])
                      )
                    ]
                ]))))
, SoftBreak
, Comment
, SoftBreak
, Code
    "test/typ/compiler/return-01.typ"
    ( line 4 , column 2 )
    (LetFunc
       (Identifier "f")
       [ NormalParam (Identifier "x") ]
       (Block
          (CodeBlock
             [ Literal (String "a")
             , If
                 [ ( Equals (Ident (Identifier "x")) (Literal (Int 0))
                   , Block (CodeBlock [ Return (Just (Literal (String "b"))) ])
                   )
                 , ( Equals (Ident (Identifier "x")) (Literal (Int 1))
                   , Block (CodeBlock [ Literal (String "c") ])
                   )
                 , ( Literal (Boolean True)
                   , Block
                       (CodeBlock
                          [ Literal (String "d") , Return Nothing , Literal (String "e") ])
                   )
                 ]
             ])))
, ParBreak
, Code
    "test/typ/compiler/return-01.typ"
    ( line 17 , column 2 )
    (FuncCall
       (Ident (Identifier "test"))
       [ NormalArg
           (FuncCall (Ident (Identifier "f")) [ NormalArg (Literal (Int 0)) ])
       , NormalArg (Literal (String "b"))
       ])
, SoftBreak
, Code
    "test/typ/compiler/return-01.typ"
    ( line 18 , column 2 )
    (FuncCall
       (Ident (Identifier "test"))
       [ NormalArg
           (FuncCall (Ident (Identifier "f")) [ NormalArg (Literal (Int 1)) ])
       , NormalArg (Literal (String "ac"))
       ])
, SoftBreak
, Code
    "test/typ/compiler/return-01.typ"
    ( line 19 , column 2 )
    (FuncCall
       (Ident (Identifier "test"))
       [ NormalArg
           (FuncCall (Ident (Identifier "f")) [ NormalArg (Literal (Int 2)) ])
       , NormalArg (Literal (String "ad"))
       ])
, ParBreak
]
--- evaluated ---
document(body: { text(body: [
]), 
                 text(body: [
]), 
                 parbreak(), 
                 text(body: [✅]), 
                 text(body: [
]), 
                 text(body: [✅]), 
                 text(body: [
]), 
                 text(body: [✅]), 
                 parbreak() })