smash-aeson

Aeson support for the smash library

https://github.com/emilypi/smash

LTS Haskell 18.28:0.1.0.0@rev:1
Stackage Nightly 2026-11-03:0.3.0
Latest on Hackage:0.3.0

See all snapshots smash-aeson appears in

BSD-3-Clause licensed by Emily Pillmore
Maintained by [email protected]
This version can be pinned in stack with:smash-aeson-0.3.0@sha256:0007499c69ba1672b5831a59c3edf29c96cbac6cc53d0dc0cb933dcbe6cd1a85,1548

Module documentation for 0.3.0

Depends on 3 packages(full list with versions):
aeson, base, smash

smash-aeson: Aeson support for the smash library

CI Hackage

The instances use an explicit, stable object format across supported aeson versions. Import the corresponding Data.Can.Aeson, Data.Smash.Aeson, or Data.Wedge.Aeson module to bring the instances into scope.

Value JSON
Non, Nada, Nowhere {}
One a {"One": a}
Eno b {"Eno": b}
Two a b {"One": a, "Eno": b}
Smash a b {"SmashL": a, "SmashR": b}
Here a {"Here": a}
There b {"There": b}

Ordinary and lifted instances use the same representation. Object key order is irrelevant when decoding. Unexpected or missing keys are rejected, and nullable payloads retain their constructor keys even when their values are null.

Changes

Revision history for smash-aeson

0.3.0 – 2026-10-26

  • Start the 0.3 major release series and require smash >=0.2.0 && <0.3.
  • Preserve the explicit ordinary and lifted JSON wire formats across aeson 2.0–2.3.

0.2.0.2 – 2026-10-26

  • Update dependency bounds and the supported GHC matrix to 9.6–9.14.
  • Update copyrights through 2026.
  • Support aeson >=2.0 && <2.4 while retaining the explicit JSON wire formats.
  • Decode two-field objects independently of key order.
  • Add fixed wire-format fixtures, malformed-input tests, and ordinary/lifted instance properties.

0.2.0.1 – 2022-04-03

  • Update base bounds to allow GHC 9.2.x

0.2.0.0 – 2022-04-02

  • Update aeson bounds to >=2.0 && <2.1

0.1.0.0 – YYYY-mm-dd

  • First version. Released on an unsuspecting world.