Function(
 Function {
  head: Destructured(
   FunctionHeadDestructured {
    ellipsis: true,
    identifier: None,
    arguments: [
     FunctionHeadDestructuredArgument {
      identifier: "config",
      default: None,
     },
     FunctionHeadDestructuredArgument {
      identifier: "lib",
      default: None,
     },
    ],
   },
  ),
  body: LetIn(
   LetIn {
    bindings: [
     Inherit(
      BindingInherit {
       from: Some(
        Identifier(
         Identifier {
          id: "lib",
          span: Span {
           start: Position {
            line: 3,
            column: 12,
           },
           end: Position {
            line: 3,
            column: 15,
           },
          },
         },
        ),
       ),
       attributes: [
        Raw(
         PartRaw {
          content: "mkOption",
          span: Span {
           start: Position {
            line: 3,
            column: 17,
           },
           end: Position {
            line: 3,
            column: 25,
           },
          },
         },
        ),
        Raw(
         PartRaw {
          content: "types",
          span: Span {
           start: Position {
            line: 3,
            column: 26,
           },
           end: Position {
            line: 3,
            column: 31,
           },
          },
         },
        ),
       ],
       span: Span {
        start: Position {
         line: 2,
         column: 4,
        },
        end: Position {
         line: 3,
         column: 32,
        },
       },
      },
     ),
    ],
    target: Map(
     Map {
      recursive: false,
      bindings: [
       KeyValue(
        BindingKeyValue {
         from: [
          Raw(
           PartRaw {
            content: "options",
            span: Span {
             start: Position {
              line: 6,
              column: 3,
             },
             end: Position {
              line: 6,
              column: 10,
             },
            },
           },
          ),
         ],
         to: Map(
          Map {
           recursive: false,
           bindings: [
            KeyValue(
             BindingKeyValue {
              from: [
               Raw(
                PartRaw {
                 content: "result",
                 span: Span {
                  start: Position {
                   line: 7,
                   column: 5,
                  },
                  end: Position {
                   line: 7,
                   column: 11,
                  },
                 },
                },
               ),
              ],
              to: FunctionApplication(
               FunctionApplication {
                function: Identifier(
                 Identifier {
                  id: "mkOption",
                  span: Span {
                   start: Position {
                    line: 7,
                    column: 14,
                   },
                   end: Position {
                    line: 7,
                    column: 22,
                   },
                  },
                 },
                ),
                arguments: [
                 Map(
                  Map {
                   recursive: false,
                   bindings: [
                    KeyValue(
                     BindingKeyValue {
                      from: [
                       Raw(
                        PartRaw {
                         content: "internal",
                         span: Span {
                          start: Position {
                           line: 8,
                           column: 7,
                          },
                          end: Position {
                           line: 8,
                           column: 15,
                          },
                         },
                        },
                       ),
                      ],
                      to: Identifier(
                       Identifier {
                        id: "true",
                        span: Span {
                         start: Position {
                          line: 8,
                          column: 18,
                         },
                         end: Position {
                          line: 8,
                          column: 22,
                         },
                        },
                       },
                      ),
                     },
                    ),
                    KeyValue(
                     BindingKeyValue {
                      from: [
                       Raw(
                        PartRaw {
                         content: "default",
                         span: Span {
                          start: Position {
                           line: 9,
                           column: 7,
                          },
                          end: Position {
                           line: 9,
                           column: 14,
                          },
                         },
                        },
                       ),
                      ],
                      to: Identifier(
                       Identifier {
                        id: "config",
                        span: Span {
                         start: Position {
                          line: 9,
                          column: 17,
                         },
                         end: Position {
                          line: 9,
                          column: 23,
                         },
                        },
                       },
                      ),
                     },
                    ),
                   ],
                   span: Span {
                    start: Position {
                     line: 7,
                     column: 23,
                    },
                    end: Position {
                     line: 10,
                     column: 6,
                    },
                   },
                  },
                 ),
                ],
               },
              ),
             },
            ),
           ],
           span: Span {
            start: Position {
             line: 6,
             column: 13,
            },
            end: Position {
             line: 11,
             column: 4,
            },
           },
          },
         ),
        },
       ),
      ],
      span: Span {
       start: Position {
        line: 5,
        column: 1,
       },
       end: Position {
        line: 12,
        column: 2,
       },
      },
     },
    ),
    span: Span {
     start: Position {
      line: 2,
      column: 1,
     },
     end: Position {
      line: 12,
      column: 2,
     },
    },
   },
  ),
  span: Span {
   start: Position {
    line: 1,
    column: 1,
   },
   end: Position {
    line: 12,
    column: 2,
   },
  },
 },
)