.babelrc

{
    "presets": ["stage-0", "react"],
    "plugins": [
        "transform-class-properties",
        "transform-es2015-template-literals",
        "transform-es2015-literals",
        "transform-es2015-function-name",
        "transform-es2015-arrow-functions",
        "transform-es2015-block-scoped-functions",
        "transform-es2015-classes",
        "transform-es2015-object-super",
        "transform-es2015-shorthand-properties",
        "transform-es2015-computed-properties",
        "transform-es2015-for-of",
        "transform-es2015-sticky-regex",
        "transform-es2015-unicode-regex",
        "check-es2015-constants",
        "transform-es2015-spread",
        "transform-es2015-parameters",
        "transform-es2015-destructuring",
        "transform-es2015-block-scoping",
        "transform-es2015-typeof-symbol",
        ["transform-regenerator", { "async": false, "asyncGenerators": false }]
    ],
    "env": {
        "test": {
            "presets": ["stage-0", "react", "es2015"],
            "plugins": [
                "transform-class-properties"
            ]
        }
    }
}