.babelrc

{
    "env": {
        "production": {
            "presets": [
                "react-optimize"
            ],
            "sourceMaps": false
        },
        "test": {
            "plugins": [
                ["istanbul", {
                    "exclude": [
                        "**/node_modules/**",
                        "**/test/**",
                        "**/Test*"
                    ]
                }],
                "dynamic-import-node"
            ],
            "sourceMaps": "inline"
        }
    },
    "plugins": [
        "transform-decorators-legacy",
        "transform-inline-environment-variables",
        "transform-export-extensions",
        "transform-class-properties",
        "transform-object-rest-spread",
        "transform-remove-strict-mode",
        "syntax-dynamic-import"
    ],
    "presets": [
        ["env", {
            "targets": {
                "browsers": ["last 1 versions", "ie >= 11"]
            },
            "modules": "commonjs",
            "loose": true,
            "useBuiltIns": true
        }],
        "react",
        "es2015"
    ],
    "sourceMaps": "inline"
}