cannotModifyImmutableAttributeError should give me document id

[hallvors]

Is your feature request related to a problem? Please describe.

Using the JavaScript client, I create a transaction and push a lot of documents with createOrReplace(). Sometimes I get a Cannot modify immutable attribute "type" error from .commit(), and while I understand why it happens, the error does not have enough detail to tell me which of the many documents is causing the problem. Could this error object be extended a bit to add a documentId property or similar?

Describe the solution you'd like

    "error": {
      "attribute": "_type",
      "description": "Cannot modify immutable attribute \"_type\"",
      "type": "cannotModifyImmutableAttributeError",
      "documentId": "fooo_id"
    }

[vicmeow]

Improved error messaging is definitely on our list of todos, so thank you for reporting!

[dutsik]

But why we should ever receive the issue if we are going to recreate the document from scratch?