{
  "type": "object",
  "definitions": {
    "Attribute": {
      "anyOf": [
        {
          "type": "object",
          "properties": {
            "tag": {
              "type": "string",
              "minLength": 1
            },
            "attribute": {
              "type": "string",
              "minLength": 1
            },
            "type": {
              "enum": ["src", "srcset"]
            },
            "filter": {
              "instanceof": "Function"
            }
          },
          "required": ["attribute", "type"],
          "additionalProperties": false
        },
        {
          "enum": ["..."]
        }
      ]
    },
    "AttributeList": {
      "type": "array",
      "items": {
        "$ref": "#/definitions/Attribute"
      },
      "minItems": 1,
      "uniqueItems": true
    }
  },
  "properties": {
    "preprocessor": {
      "instanceof": "Function"
    },
    "attributes": {
      "anyOf": [
        { "type": "boolean" },
        {
          "type": "object",
          "properties": {
            "list": {
              "$ref": "#/definitions/AttributeList"
            },
            "urlFilter": {
              "instanceof": "Function"
            },
            "root": {
              "type": "string"
            }
          },
          "additionalProperties": false
        }
      ]
    },
    "minimize": {
      "anyOf": [{ "type": "boolean" }, { "type": "object" }]
    },
    "esModule": {
      "type": "boolean"
    }
  },
  "additionalProperties": false
}