package data-encoding

With_field_name_duplicate_checks is a subset of Encoding where all the constructed objects are checked for duplicates.

Note that the analysis can include false positives: it might fail on encodings which will never serialise a value with duplicate fields. Still, these false positives are uncommon and we recommend you use these combinators when relevant.

let e =
  let open Data_encoding in
  let open Data_encoding.With_field_name_duplicate_checks in
  …