.babelrc

{
    "env": {
        "development": {
            "plugins": [
                "transform-es2015-modules-commonjs",
                "transform-class-properties",
                "transform-decorators-legacy",
                ["transform-private", {
                    "pattern": "^_"
                }]
            ],
            "sourceMaps": "inline",
            "comments": true,
            "minified": false,
            "sourceRoot": "src/"
        },
        "production": {
            "plugins": [
                "transform-es2015-modules-commonjs",
                "transform-class-properties",
                "transform-decorators-legacy",
                ["transform-private", {
                    "pattern": "^_"
                }]
            ],
            "sourceMaps": false,
            "comments": true,
            "minified": true,
            "sourceRoot": "src/"
        }
    }
}