my-notes-viewer/babel.config.json

{
    "sourceMaps": "inline",
    "inputSourceMap": true,
    "presets": [
        [
            "@babel/preset-env",
            {
                "useBuiltIns": "usage",
                "corejs": {
                    "version": "3",
                    "proposals": true
                },
                "targets": ">0.5%, IE 11, not dead"
            }
        ]
    ],
    "plugins": [
        [
            "@babel/plugin-transform-spread",
            {
                "loose": true
            }
        ]
    ]
}