[object Object] with malformed type definition on hover

[sbdchd]

Describe the bug

With the following malformed schema:

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://example.com/product.schema.json",
  "title": "servers",
  "type": "object",
  "additionalProperties": {
    "type": {
      "$ref": "#/$defs/server"
    }
  },
  "$defs": {
    "server": {
      "type": "object",
      "required": [
        "id",
        "cpu",
        "mem",
        "storage"
      ],
      "properties": {
        "id": {
          "description": "The unique identifier for a product",
          "type": "string"
        },
        "cpu": {
          "description": "The unique identifier for a product",
          "type": "number"
        },
        "mem": {
          "description": "The unique identifier for a product",
          "type": "string"
        },
        "storage": {
          "description": "The unique identifier for a product",
          "type": "string"
        }
      }
    }
  }
}

where we are using:

  "additionalProperties": {
    "type": {
      "$ref": "#/$defs/server"
    }
  },

instead of

  "additionalProperties": {
    "$ref": "#/$defs/server"
  },

with the following yaml

foo:
  id: foo-1
  cpu: 1
  mem: 12GB
  storage: 200GB

on hover we get:

Incorrect type. Expected "[object Object]". yaml-schema: servers

Expected Behavior

the editor should show something besides [object Object] maybe unknown or error!

Current Behavior

on hover with malformed schema the tooltip shows [object Object]

Steps to Reproduce

1. create yaml and json schema
2. setup vscode to connect the two
3. open yaml and see incorrect error message on hover

Environment

• Windows
• Mac
• Linux
• other (please specify)