What happened?

When deserializing a projects_v2_item event into a ProjectsV2ItemEvent, deserialization works fine when you use a single select field and the changes part of the payload looks like this:

  "changes": {
    "field_value": {
      "field_node_id": "PVTF_lADOAWcTxs07G84AAali",
      "field_type": "single_select",
      "field_name": "Status",
      "project_number": 18,
      "from": {
        "id": "f75ad846",
        "name": "Todo",
        "color": "GREEN",
        "description": "This item hasn't been started"
      },
      "to": {
        "id": "47fc9ee4",
        "name": "In Progress",
        "color": "YELLOW",
        "description": "This is actively being worked on"
      }
    }
  },

However, according to the docs, the from and to fields can be one of :null, string, integer, or object. (And from my testing, a numeric can also be contain a decimal as well.)

Because the code currently expects those fields to always be an object of type ChangesFieldValueChange, the scalar use cases like this one:

  "changes": {
    "field_value": {
      "field_node_id": "PVTF_lADOAEzhac4AjFojzgbzsKM",
      "field_type": "date",
      "field_name": "Start Date",
      "project_number": 233,
      "from": null,
      "to": "2025-08-01T00:00:00+00:00"
    }
  },

...result in a deserialization error:

Result: Exception processing GitHub event.
Exception: System.Text.Json.JsonException: The JSON value could not be converted to Octokit.Webhooks.Models.ProjectsV2ItemEvent.ChangesFieldValueChange. Path: $.changes.field_value.to | LineNumber: 0 | BytePositionInLine: 1392.

Versions

Octokit.Webhooks 3.0.0

Relevant log output

Included in description above.

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