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TODO.md

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Missing Features

  • Properly handle iterative types (e.g. lists) in the path of an error message.

    We will need a reasonable way to represent the path to an item in a list, both in the internal path (List[String]) and the output message.

    The output message should probably be formatted as:

    parent.list[0].child

    Though how we represent this internally I don't know. Perhaps change the Path type from List[String] to an enumeration:

    sealed trait Node case class NamedNode(name: String) extends Node case class IndexedNode(name: String, index: Int) extends Node

    type Path = List[Node]

    The downside of this approach is it makes the API more complex, as the user can no longer simply pattern match on a List[String] to handle the path.

  • Provide more default validators

    The goal here should be to cover all Scala standard library types (especially collections) and all cats.data types for which default implementations can be feasibly defined.