{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "type": "object",
  "patternProperties": {
    "^.*$": {
      "oneOf": [
        { "$ref": "#/$defs/logLevel" },
        {
          "type": "object",
          "properties": {
            "minLevel": { "$ref": "#/$defs/logLevel" },
            "subConfig": {
              "type": "object",
              "$ref": "#",
              "minProperties": 1
            },
            "conditional": {
              "type": "object",
              "properties": {
                "minLevel": { "$ref": "#/$defs/logLevel" }
              },
              "required": ["minLevel"],
              "additionalProperties": true
            }
          },
          "required": ["minLevel"],
          "additionalProperties": false
        }
      ]
    }
  },
  "$defs": {
    "logLevel": { "enum": ["trace", "debug", "info", "warn", "error", "fatal"] }
  }
}