config-schema.json

{
    "$schema": "http://json-schema.org/draft-07/schema#",
    "title": "Pupin menu configuration object",
    "type": "object",
    "properties": {
      "name": {
        "type": "string"
      },
      "options": {
        "type": "array",
        "items": {
          "$ref": "#/definitions/menuItem"
        }
      }
    },
    "required": ["name", "options"],
    "definitions": {
      "menuItem": {
        "type": "object",
        "properties": {
          "name": {
            "type": "string"
          },
          "command": {
            "type": "string"
          },
          "options": {
            "type": "array",
            "items": {
              "$ref": "#/definitions/menuItem"
            }
          }
        },
        "required": ["name"],
        "oneOf": [
          {
            "required": ["command"]
          },
          {
            "required": ["options"]
          }
        ]
      }
    }
  }