{
    "$id": "https://scratch.mit.edu/sb3_schema.json",
    "$schema": "http://json-schema.org/schema#",
    "description": "Scratch 3.0 Project Schema",
    "type": "object",
    "properties": {
        "meta": {
            "type": "object",
            "properties": {
                "semver": {
                    "type": "string",
                    "pattern": "^(3\\.[0-9]+\\.[0-9]+)$"
                },
                "vm": {
                    "type": "string",
                    "pattern": "^([0-9]+\\.[0-9]+\\.[0-9]+)($|-)"
                },
                "agent": {
                    "type": "string"
                },
                "origin": {
                    "type": "string"
                }
            },
            "required": [
                "semver"
            ]
        },
        "targets": {
            "type": "array",
            "items": [
                {
                    "allOf": [
                        {"$ref": "sb3_definitions.json#/definitions/stage" },
                        {"$ref": "sb3_definitions.json#/definitions/target"}
                    ]
                }
            ],
            "additionalItems": {
                "allOf": [
                    {"$ref": "sb3_definitions.json#/definitions/sprite"},
                    {"$ref": "sb3_definitions.json#/definitions/target"}
                ]
            }
        }
    },
    "required": [
        "meta",
        "targets"
    ]
}