--- parse tree ---
[ Code
    "test/typ/compiler/color-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/color-01.typ"
                                 ( line 1 , column 47 )
                                 (FuncCall
                                    (Ident (Identifier "repr"))
                                    [ NormalArg (Ident (Identifier "x")) ])
                             , Space
                             , Text "/"
                             , Text "="
                             , Space
                             , Code
                                 "test/typ/compiler/color-01.typ"
                                 ( line 1 , column 59 )
                                 (FuncCall
                                    (Ident (Identifier "repr"))
                                    [ NormalArg (Ident (Identifier "y")) ])
                             , Text ")"
                             ])
                      )
                    ]
                ]))))
, SoftBreak
, Comment
, Comment
, Code
    "test/typ/compiler/color-01.typ"
    ( line 4 , column 2 )
    (FuncCall
       (Ident (Identifier "test"))
       [ NormalArg
           (FuncCall
              (FieldAccess
                 (Ident (Identifier "lighten"))
                 (FuncCall
                    (Ident (Identifier "luma"))
                    [ NormalArg (Literal (Numeric 20.0 Percent)) ]))
              [ NormalArg (Literal (Numeric 50.0 Percent)) ])
       , NormalArg
           (FuncCall
              (Ident (Identifier "luma"))
              [ NormalArg (Literal (Numeric 60.0 Percent)) ])
       ])
, SoftBreak
, Code
    "test/typ/compiler/color-01.typ"
    ( line 5 , column 2 )
    (FuncCall
       (Ident (Identifier "test"))
       [ NormalArg
           (FuncCall
              (FieldAccess
                 (Ident (Identifier "darken"))
                 (FuncCall
                    (Ident (Identifier "luma"))
                    [ NormalArg (Literal (Numeric 80.0 Percent)) ]))
              [ NormalArg (Literal (Numeric 20.0 Percent)) ])
       , NormalArg
           (FuncCall
              (Ident (Identifier "luma"))
              [ NormalArg (Literal (Numeric 63.9 Percent)) ])
       ])
, SoftBreak
, Code
    "test/typ/compiler/color-01.typ"
    ( line 6 , column 2 )
    (FuncCall
       (Ident (Identifier "test"))
       [ NormalArg
           (FuncCall
              (FieldAccess
                 (Ident (Identifier "negate"))
                 (FuncCall
                    (Ident (Identifier "luma"))
                    [ NormalArg (Literal (Numeric 80.0 Percent)) ]))
              [])
       , NormalArg
           (FuncCall
              (Ident (Identifier "luma"))
              [ NormalArg (Literal (Numeric 20.0 Percent)) ])
       ])
, ParBreak
]
--- evaluated ---
document(body: { text(body: [
]), 
                 text(body: [✅]), 
                 text(body: [
]), 
                 text(body: [❌(]), 
                 text(body: [luma(64%)]), 
                 text(body: [ /= ]), 
                 text(body: [luma(63%)]), 
                 text(body: [)]), 
                 text(body: [
]), 
                 text(body: [✅]), 
                 parbreak() })