core/.babelrc

{
    "presets": [
        [
            "@babel/preset-env",
            {
                "targets": {
                    "browsers": [
                        [
                            "last 2 versions",
                            "ie >= 11"
                        ]
                    ]
                },
                "useBuiltIns": "usage",
                "corejs": 3,
                "modules": false
            }
        ]
    ],
    "plugins": [
        "lodash",
        "@babel/plugin-transform-runtime"
    ]
}