{
  "type": "object",
  "properties": {
    "base": {
      "type": "number"
    },
    "attrs": {
      "type": "object"
    },
    "insertAt": {
      "type": "string"
    },
    "insertInto": {
      "type": "string"
    },
    "singleton": {
      "type": "boolean"
    },
    "sourceMap": {
      "type": "boolean"
    },
    "convertToAbsoluteUrls": {
      "type": "boolean"
    }
  },
  "additionalProperties": true
}