Syntax error when using dereferencing operator

[deslee]

Hi, I spent a few hours fighting this issue when trying to use next-sanity's previewSubscriptionHook. I traced it down to this package. Basically there is a syntax error for this query:

*[_id == 'siteSettings'][0] {
    ...,
    icon {
        ..., 
        asset -> { _id, metadata }
    }
}

Everything works when I remove the spaces in between the deferencing operator ->:

*[_id == 'siteSettings'][0] {
    ...,
    icon {
        ..., 
        asset->{ _id, metadata }
    }
}

This is a problem because the Sanity Studio Vision plugin allows the spaces. Fetching using Sanity Client also allows spaces between the derefencing operator.

This leads me to believe that the spaces between the operator is valid syntax, which means that it's a bug in groq-js.

If it is actually not valid syntax to have the spaces, then I think the aforementioned libraries and studio plugin should reject the syntax or print a warning for the developer.

[judofyr]

This is indeed a bug in groq-js and a space should be allowed before and after -> (but not between - and >). I'll look into it!