{
  "type": "object",
  "properties": {
    "hmr": {
      "type": "boolean"
    },
    "base": {
      "type": "number"
    },
    "attrs": {
      "type": "object"
    },
    "insertAt": {
      "type": ["string", "object"]
    },
    "insertInto": {
      "anyOf": [
        { "type": "string" },
        { "instanceof": "Function" }
      ]
    },
    "transform": {
      "type": "string"
    },
    "singleton": {
      "type": "boolean"
    },
    "sourceMap": {
      "type": "boolean"
    },
    "convertToAbsoluteUrls": {
      "type": "boolean"
    }
  },
  "additionalProperties": false
}