{
    "toplevel": true,
    "format": {
        "quote_style": 1,
        "comments": "/^!/"
    },
    "mangle": {
        "properties": {
            "regex": "/^_/",
            "keep_quoted": true
        }
    },
    "compress": {
        "drop_console": true,
        "passes": 3,
        "pure_funcs": [
            "_log"
        ],
        "ecma": 5
    }
}