.babelrc

{
    "presets": [
        ["env",
        {
            "modules": false,
            "targets":
            {
                firefox: 62,
                uglify: true

            },
            useBuiltIns: true,
            debug: true
        }],
        "stage-3"
    ],
    "plugins": ["add-module-exports", "transform-vue-jsx", "transform-runtime", "transform-es2015-modules-commonjs", "syntax-dynamic-import"],
    comments: false
}