Transform error with null values

[Alkarex]

Hello,
I believe this is an error:

Input:

{
  "hi": "world",
  "bye": null
}

Transform:

$ ~> | ** ["hi"] | {"hello": hi}, ["hi"] |

Output with http://try.jsonata.org :

u is null

Instead, I would expect the following output:

{
  "bye": null,
  "hello": "world"
}

[andrew-coleman]

Certainly it's a bug that you are getting a non-jsonata error bubbling up from the evaluator. I'll fix that.

However, to get the result you want, the predicate on the descendent wildcard (**) needs to be the path/property hi, not the string literal "hi". The following expression will work for you:

$ ~> | ** [hi] | {"hello": hi}, ["hi"] |

See http://try.jsonata.org/B1NqQGUAB

[Alkarex]

@andrew-coleman Thanks for the feedback! Ok, I thought the two forms were equivalent.