Function(
 Function {
  head: Destructured(
   FunctionHeadDestructured {
    ellipsis: false,
    identifier: None,
    arguments: [
     FunctionHeadDestructuredArgument {
      identifier: "lib",
      default: None,
     },
    ],
   },
  ),
  body: Map(
   Map {
    recursive: true,
    bindings: [
     KeyValue(
      BindingKeyValue {
       from: [
        Raw(
         PartRaw {
          content: "assertMsg",
          span: Span {
           start: Position {
            line: 19,
            column: 3,
           },
           end: Position {
            line: 19,
            column: 12,
           },
          },
         },
        ),
       ],
       to: Function(
        Function {
         head: Simple(
          FunctionHeadSimple {
           identifier: "pred",
          },
         ),
         body: Function(
          Function {
           head: Simple(
            FunctionHeadSimple {
             identifier: "msg",
            },
           ),
           body: BinaryOperation(
            BinaryOperation {
             left: Identifier(
              Identifier {
               id: "pred",
               span: Span {
                start: Position {
                 line: 20,
                 column: 5,
                },
                end: Position {
                 line: 20,
                 column: 9,
                },
               },
              },
             ),
             operator: LogicalOr,
             right: FunctionApplication(
              FunctionApplication {
               function: PropertyAccess(
                PropertyAccess {
                 expression: Identifier(
                  Identifier {
                   id: "builtins",
                   span: Span {
                    start: Position {
                     line: 20,
                     column: 13,
                    },
                    end: Position {
                     line: 20,
                     column: 21,
                    },
                   },
                  },
                 ),
                 attribute_path: [
                  Raw(
                   PartRaw {
                    content: "throw",
                    span: Span {
                     start: Position {
                      line: 20,
                      column: 22,
                     },
                     end: Position {
                      line: 20,
                      column: 27,
                     },
                    },
                   },
                  ),
                 ],
                 default: None,
                },
               ),
               arguments: [
                Identifier(
                 Identifier {
                  id: "msg",
                  span: Span {
                   start: Position {
                    line: 20,
                    column: 28,
                   },
                   end: Position {
                    line: 20,
                    column: 31,
                   },
                  },
                 },
                ),
               ],
              },
             ),
            },
           ),
           span: Span {
            start: Position {
             line: 19,
             column: 21,
            },
            end: Position {
             line: 20,
             column: 31,
            },
           },
          },
         ),
         span: Span {
          start: Position {
           line: 19,
           column: 15,
          },
          end: Position {
           line: 20,
           column: 31,
          },
         },
        },
       ),
      },
     ),
     KeyValue(
      BindingKeyValue {
       from: [
        Raw(
         PartRaw {
          content: "assertOneOf",
          span: Span {
           start: Position {
            line: 36,
            column: 3,
           },
           end: Position {
            line: 36,
            column: 14,
           },
          },
         },
        ),
       ],
       to: Function(
        Function {
         head: Simple(
          FunctionHeadSimple {
           identifier: "name",
          },
         ),
         body: Function(
          Function {
           head: Simple(
            FunctionHeadSimple {
             identifier: "val",
            },
           ),
           body: Function(
            Function {
             head: Simple(
              FunctionHeadSimple {
               identifier: "xs",
              },
             ),
             body: FunctionApplication(
              FunctionApplication {
               function: Identifier(
                Identifier {
                 id: "assertMsg",
                 span: Span {
                  start: Position {
                   line: 36,
                   column: 32,
                  },
                  end: Position {
                   line: 36,
                   column: 41,
                  },
                 },
                },
               ),
               arguments: [
                FunctionApplication(
                 FunctionApplication {
                  function: PropertyAccess(
                   PropertyAccess {
                    expression: Identifier(
                     Identifier {
                      id: "lib",
                      span: Span {
                       start: Position {
                        line: 37,
                        column: 6,
                       },
                       end: Position {
                        line: 37,
                        column: 9,
                       },
                      },
                     },
                    ),
                    attribute_path: [
                     Raw(
                      PartRaw {
                       content: "elem",
                       span: Span {
                        start: Position {
                         line: 37,
                         column: 10,
                        },
                        end: Position {
                         line: 37,
                         column: 14,
                        },
                       },
                      },
                     ),
                    ],
                    default: None,
                   },
                  ),
                  arguments: [
                   Identifier(
                    Identifier {
                     id: "val",
                     span: Span {
                      start: Position {
                       line: 37,
                       column: 15,
                      },
                      end: Position {
                       line: 37,
                       column: 18,
                      },
                     },
                    },
                   ),
                   Identifier(
                    Identifier {
                     id: "xs",
                     span: Span {
                      start: Position {
                       line: 37,
                       column: 19,
                      },
                      end: Position {
                       line: 37,
                       column: 21,
                      },
                     },
                    },
                   ),
                  ],
                 },
                ),
                String(
                 String_ {
                  parts: [
                   Interpolation(
                    PartInterpolation {
                     expression: Identifier(
                      Identifier {
                       id: "name",
                       span: Span {
                        start: Position {
                         line: 38,
                         column: 8,
                        },
                        end: Position {
                         line: 38,
                         column: 12,
                        },
                       },
                      },
                     ),
                    },
                   ),
                   Raw(
                    PartRaw {
                     content: " must be one of ",
                     span: Span {
                      start: Position {
                       line: 38,
                       column: 6,
                      },
                      end: Position {
                       line: 38,
                       column: 29,
                      },
                     },
                    },
                   ),
                   Interpolation(
                    PartInterpolation {
                     expression: FunctionApplication(
                      FunctionApplication {
                       function: PropertyAccess(
                        PropertyAccess {
                         expression: Identifier(
                          Identifier {
                           id: "lib",
                           span: Span {
                            start: Position {
                             line: 39,
                             column: 7,
                            },
                            end: Position {
                             line: 39,
                             column: 10,
                            },
                           },
                          },
                         ),
                         attribute_path: [
                          Raw(
                           PartRaw {
                            content: "generators",
                            span: Span {
                             start: Position {
                              line: 39,
                              column: 11,
                             },
                             end: Position {
                              line: 39,
                              column: 21,
                             },
                            },
                           },
                          ),
                          Raw(
                           PartRaw {
                            content: "toPretty",
                            span: Span {
                             start: Position {
                              line: 39,
                              column: 22,
                             },
                             end: Position {
                              line: 39,
                              column: 30,
                             },
                            },
                           },
                          ),
                         ],
                         default: None,
                        },
                       ),
                       arguments: [
                        Map(
                         Map {
                          recursive: false,
                          bindings: [],
                          span: Span {
                           start: Position {
                            line: 39,
                            column: 31,
                           },
                           end: Position {
                            line: 39,
                            column: 33,
                           },
                          },
                         },
                        ),
                        Identifier(
                         Identifier {
                          id: "xs",
                          span: Span {
                           start: Position {
                            line: 39,
                            column: 34,
                           },
                           end: Position {
                            line: 39,
                            column: 36,
                           },
                          },
                         },
                        ),
                       ],
                      },
                     ),
                    },
                   ),
                   Raw(
                    PartRaw {
                     content: ", but is: ",
                     span: Span {
                      start: Position {
                       line: 38,
                       column: 6,
                      },
                      end: Position {
                       line: 39,
                       column: 47,
                      },
                     },
                    },
                   ),
                   Interpolation(
                    PartInterpolation {
                     expression: FunctionApplication(
                      FunctionApplication {
                       function: PropertyAccess(
                        PropertyAccess {
                         expression: Identifier(
                          Identifier {
                           id: "lib",
                           span: Span {
                            start: Position {
                             line: 40,
                             column: 9,
                            },
                            end: Position {
                             line: 40,
                             column: 12,
                            },
                           },
                          },
                         ),
                         attribute_path: [
                          Raw(
                           PartRaw {
                            content: "generators",
                            span: Span {
                             start: Position {
                              line: 40,
                              column: 13,
                             },
                             end: Position {
                              line: 40,
                              column: 23,
                             },
                            },
                           },
                          ),
                          Raw(
                           PartRaw {
                            content: "toPretty",
                            span: Span {
                             start: Position {
                              line: 40,
                              column: 24,
                             },
                             end: Position {
                              line: 40,
                              column: 32,
                             },
                            },
                           },
                          ),
                         ],
                         default: None,
                        },
                       ),
                       arguments: [
                        Map(
                         Map {
                          recursive: false,
                          bindings: [],
                          span: Span {
                           start: Position {
                            line: 40,
                            column: 33,
                           },
                           end: Position {
                            line: 40,
                            column: 35,
                           },
                          },
                         },
                        ),
                        Identifier(
                         Identifier {
                          id: "val",
                          span: Span {
                           start: Position {
                            line: 40,
                            column: 36,
                           },
                           end: Position {
                            line: 40,
                            column: 39,
                           },
                          },
                         },
                        ),
                       ],
                      },
                     ),
                    },
                   ),
                  ],
                  span: Span {
                   start: Position {
                    line: 38,
                    column: 5,
                   },
                   end: Position {
                    line: 40,
                    column: 41,
                   },
                  },
                 },
                ),
               ],
              },
             ),
             span: Span {
              start: Position {
               line: 36,
               column: 28,
              },
              end: Position {
               line: 40,
               column: 41,
              },
             },
            },
           ),
           span: Span {
            start: Position {
             line: 36,
             column: 23,
            },
            end: Position {
             line: 40,
             column: 41,
            },
           },
          },
         ),
         span: Span {
          start: Position {
           line: 36,
           column: 17,
          },
          end: Position {
           line: 40,
           column: 41,
          },
         },
        },
       ),
      },
     ),
    ],
    span: Span {
     start: Position {
      line: 3,
      column: 1,
     },
     end: Position {
      line: 42,
      column: 2,
     },
    },
   },
  ),
  span: Span {
   start: Position {
    line: 1,
    column: 1,
   },
   end: Position {
    line: 42,
    column: 2,
   },
  },
 },
)