schema.json

{
    "type": "object",
    "additionalProperties": {
        "$ref": "#/$defs/state"
    },
    "$defs": {
        "state": {
            "type": "object",
            "required": [],
            "properties": {
                "parallel": {
                    "type": "boolean"
                },
                "initial": {
                    "type": "string"
                },
                "context": {
                    "anyOf": [
                        {
                            "type": "string"
                        },
                        {
                            "type": "object"
                        },
                        {
                            "type": "array"
                        }
                    ]
                },
                "transitions": {
                    "type": "array",
                    "items": {
                        "$ref": "#/$defs/transition"
                    }
                },
                "children": {
                    "type": "object",
                    "additionalProperties": {
                        "$ref": "#/$defs/state"
                    }
                },
                "onEntry": {
                    "$ref": "#/$defs/callback"
                },
                "onExit": {
                    "$ref": "#/$defs/callback"
                },
                "action": {
                    "$ref": "#/$defs/callback"
                }
            }
        },
        "transition": {
            "anyOf": [
                {
                    "type": "string"
                },
                {
                    "type": "object",
                    "required": [
                        "target"
                    ],
                    "properties": {
                        "target": {
                            "type": "string"
                        },
                        "guard": {
                            "$ref": "#/$defs/callback"
                        }
                    }
                }
            ]
        },
        "callback": {
            "type": "string"
        }
    }
}