scratch-www/.babelrc

// .babelrc is an alias for .babelrc.json and uses JSON5 syntax
{
    "plugins": [
        "@babel/plugin-transform-async-to-generator",
        "@babel/plugin-transform-object-rest-spread",
        "@babel/plugin-syntax-dynamic-import",
        "transform-require-context"
    ],
    "presets": [
        [
            "@babel/preset-env",
            {
                "bugfixes": true
            }
        ],
        "@babel/preset-react"
    ]
}