Lattyware / elm-json-diff

Compute JSON patches by comparing two JSON values.

elm-json-diff

Compute JSON patches by comparing two JSON values.

Usage

patch =
    Json.Diff.diff oldDocument newDocument

Creating a patch has to be done on the Value type, due to the type system (records can't be accessed by field name in Elm).

However, if you have an encoder for your Elm type, you can create a patch by encoding the data first.