JSON Schema Property 'background'

"background": {
    "type": "object",
    "description": "The background page is an HTML page that runs in the extension process. It exists for the lifetime of your extension, and only one instance of it at a time is active.",
    "properties": {
        "persistent": {
            "type": "boolean",
            "description": "When false, makes the background page an event page (loaded only when needed).",
            "default": true
        },
        "page": {
            "$ref": "#/definitions/page",
            "description": "Specify the HTML of the background page.",
            "default": "background.html"
        },
        "scripts": {
            "$ref": "#/definitions/scripts",
            "description": "A background page will be generated by the extension system that includes each of the files listed in the scripts property.",
            "default": [
                "background.js"
            ]
        }
    },
    "dependencies": {
        "page": {
            "not": {
                "required": [
                    "scripts"
                ]
            }
        },
        "scripts": {
            "not": {
                "required": [
                    "page"
                ]
            }
        }
    }
}

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