[bug] Setting options gives hasOwnProperty issue

[natew]

Case

Bug using collection.schema.options

Issue

Error I get is:

Uncaught (in promise) TypeError: Cannot read property 'hasOwnProperty' of undefined
    at checkField (schema-check.js:73)
    at traverse (schema-check.js:139)
    at traverse (schema-check.js:143)
    at validateFieldsDeep (schema-check.js:146)
    at checkSchema (schema-check.js:177)
    at hooks.js:100
    at Array.forEach (<anonymous>)
    at runPluginHooks (hooks.js:99)
    at Object.create (rx-schema.js:384)
    at RxDatabase._callee4$ (rx-database.js:619)

Here:

Info

• Environment: Chrome latest

Code

Schema looks like:

{
  "primaryPath": "_id",
  "disableKeyCompression": true,
  "properties": {
    "id": {
      "primary": true,
      "type": "string"
    },
    "title": {
      "index": true,
      "type": "string"
    },
    "integration": {
      "type": "string"
    },
    "type": {
      "index": true,
      "type": "string"
    },
    "data": {
      "type": "object"
    },
    "author": {
      "type": "string"
    },
    "bucket": {
      "type": "string"
    },
    "url": {
      "unique": true,
      "type": "string"
    },
    "created": {
      "index": true,
      "type": "string"
    },
    "updated": {
      "index": true,
      "type": "string"
    },
    "createdAt": {
      "format": "date-time",
      "type": "string",
      "index": true
    },
    "updatedAt": {
      "format": "date-time",
      "type": "string",
      "index": true
    }
  },
  "type": "object",
  "required": [
    "title",
    "integration",
    "type",
    "created",
    "updated"
  ],
  "title": "things",
  "version": 0,
  "options": {
    "asyncMethods": {}
  }
}

This is from copy() so it removed the asyncMethods part, but asyncMethods looks like:

[natew]

And immediately realized this is on the wrong place, yikes... (sorry)