References in arrays and non-existent are lost when updating any field in a document

Thanks for making Vuefire, it’s great!

I have a bound object that has an array of references as one of the fields:

For existing references in the array everything works well, however thing break when I add a new entry into that array with

firestore.collection("logs").doc(this.log.id)
    .update({
        photos: 
            firebase.firestore.FieldValue.arrayUnion(doc.ref)
    });
});

I end up with the right data inside firestore, but in Vue, the new entry in the array is loaded as a string instead of an Object:

If I re-bind the object, everything is fine.

[posva]

I found the problem and a solution. I need to refactor some of the code and write unit tests before releasing a new version. I will probably be able to in a week or so 🙂

[miyaoka]

https://github.com/vuejs/vuefire/blob/a1c45de6dd7c15577c01edadb70968da9f4e835f/packages/%40posva/vuefire-core/src/firestore/index.ts#L147-L152

I rewrite this code to

if (sub) sub.unsub()

It works for me.