Perfect - thanks! Jonathan On Wed, Nov 10, 2021 at 1:41 PM Martin Honnen <martin.honnen@gmx.de> wrote:

On 10.11.2021 19:34, Jonathan Robie wrote:

...

I want to serialize JSON. Consider the following function:

declare function local:index() { array{ $levinsohn/levinsohn/feature/header ! map {./name : ./description ! string() } } };

When I run that, I get output that looks like this:

[map { "Ambiguous": "Marked but ambiguous constituent order." }, map { "annotations": "Inline annotations." } !!! SNIP !!!]

That won't work as output in a REST API, so I want to serialize that without the map keyword. I tried to use fn:serialize():

declare function local:index() { array{ $levinsohn/levinsohn/feature/header ! map {./name : ./description ! string() } } ! serialize(.) };

That gave me this error:

items of type map(*) cannot be serialized

So ... what's the right way to do this?

I would use

serialize(local:index(), map { 'method' : 'json' })

to serialize the whole array as JSON