{
    "presets": [
        ["env", {
            "targets": {
                "chrome": 40,
                "firefox": 35,
                "edge": 14,
                "node": "6.5"
            },
            "modules": false,
            "useBuiltIns": true
        }]
    ],
    "plugins": [
        ["babel-plugin-transform-builtin-extend", {
            "globals": ["Error"]
        }]
    ]
}