Issues

• WithUnionTagNamingPolicy is ignored if UnionTagName is set

  Tarmil/FSharp.SystemTextJson#216 · Filter by author Bananas-Are-Yellow opened on Jul 2, 2026

• Feature request: option to disallow deserializing union cases with private constructors

  Tarmil/FSharp.SystemTextJson#215 · Filter by author reinux opened on May 29, 2026
  2

• Add per-type override methods

  enhancement
  Tarmil/FSharp.SystemTextJson#214 · Filter by author Tarmil opened on Apr 22, 2026

• Add SkippableOptionFields value for deserialization only

  Tarmil/FSharp.SystemTextJson#209 · Filter by author cmeeren opened on Jan 23, 2026

• JsonUnmappedMemberHandling.Disallow has no effect when using JsonFSharpConverter

  Tarmil/FSharp.SystemTextJson#208 · Filter by author cmeeren opened on Jan 20, 2026

• Utf8JsonReader.Skip() fails when Utf8JsonReader.IsFinalBlock is false (streaming scenarios only?)

  bug
  Tarmil/FSharp.SystemTextJson#206 · Filter by author fcallejon opened on Dec 17, 2025
  1

• FSharpLuLike should include WithUnionTagCaseInsensitive

  Tarmil/FSharp.SystemTextJson#190 · Filter by author cmeeren opened on Sep 3, 2024
  1

• Do not use FSharp.SystemTextJson on types that do not have the [<JsonFSharpConverter>] attribute

  Tarmil/FSharp.SystemTextJson#187 · Filter by author Bananas-Are-Yellow opened on Jun 3, 2024
  3

• Allowing null fields example from the docs is not working

  Tarmil/FSharp.SystemTextJson#186 · Filter by author paredes-intracen opened on May 29, 2024
  3

• Custom serializer/JsonConverter for a record

  Tarmil/FSharp.SystemTextJson#185 · Filter by author rynoV opened on Apr 25, 2024
  4

• Untagged Attribute and options configurations don't seem to be working

  Tarmil/FSharp.SystemTextJson#183 · Filter by author vitash opened on Mar 25, 2024
  2

• Incorrect missing field name - seems to pick name of first null field, even if field is optional

  Tarmil/FSharp.SystemTextJson#178 · Filter by author cmeeren opened on Jan 20, 2024

• WithUnwrapOption(false) still serializes None as null

  enhancement
  Tarmil/FSharp.SystemTextJson#171 · Filter by author cmeeren opened on Aug 21, 2023
  5

• Unwrap the whole union into a record

  Tarmil/FSharp.SystemTextJson#157 · Filter by author shanoaice opened on Apr 29, 2023
  1

• Translate JsonValue from/to F# data

  Tarmil/FSharp.SystemTextJson#156 · Filter by author jkone27 opened on Apr 22, 2023

• Types with mutual recursion are not supported

  Tarmil/FSharp.SystemTextJson#155 · Filter by author jmfallecker opened on Mar 24, 2023
  2

• How handle full cases from first letter

  Tarmil/FSharp.SystemTextJson#150 · Filter by author kyryloboiev opened on Jan 26, 2023
  1

• JsonConverterAttribute applied to a record field is ignored

  Tarmil/FSharp.SystemTextJson#148 · Filter by author kyryloboiev opened on Jan 18, 2023
  4

• Never ending recursion when trying to handle recursive discriminated unions.

  bug
  Tarmil/FSharp.SystemTextJson#147 · Filter by author gdar91 opened on Jan 6, 2023

• String can be null on serialization but throws on deserialization

  Tarmil/FSharp.SystemTextJson#144 · Filter by author jannikbuschke opened on Dec 26, 2022
  3

• Add Support for Untagged Unwrapped Single Cases

  Tarmil/FSharp.SystemTextJson#135 · Filter by author daniellittledev opened on Oct 21, 2022
  1

• Deserializtion doesn't match serialization (DU) (alternatively: can't deserialize DU case from bare string)

  Tarmil/FSharp.SystemTextJson#131 · Filter by author aggieben opened on Sep 13, 2022
  2

• Can the library benefit of JSON contract customization to simplify any logic?

  Tarmil/FSharp.SystemTextJson#129 · Filter by author xperiandri opened on Aug 21, 2022
  2

• Use ListCollector to construct 'T list during deserialization

  Tarmil/FSharp.SystemTextJson#118 · Filter by author Tarmil opened on Jun 16, 2022

• Serialize Tuple as an object

  Tarmil/FSharp.SystemTextJson#116 · Filter by author isaacabraham opened on Jun 14, 2022
  4