flutter/packages/flutter_tools/schema/pubspec_yaml.json

{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "title": "pubspec.yaml",
    "type": "object",
    "additionalProperties": true,
    "properties": {
        "name": { "type": "string" },
        "flutter": {
            "type": "object",
            "additionalProperties": false,
            "properties": {
                "uses-material-design": { "type": "boolean" },
                "assets": {
                    "type": "array",
                    "items": { "type": "string" }
                },
                "services": {
                    "type": "array",
                    "items": { "type": "string" }
                },
                "fonts": {
                    "type": "array",
                    "items": {
                        "type": "object",
                        "additionalProperties": false,
                        "properties": {
                            "family": { "type": "string" },
                            "fonts": {
                                "type": "array",
                                "items": {
                                    "type": "object",
                                    "additionalProperties": false,
                                    "properties": {
                                        "asset": { "type": "string" },
                                        "weight": { "enum": [ 100, 200, 300, 400, 500, 600, 700, 800, 900 ] },
                                        "style": { "enum": [ "normal", "italic" ] }
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}