forge/.babelrc

{
  "sourceMaps": "inline",
  "ignore": [
    "./tmpl"
  ],
  "plugins": [
    "@babel/plugin-proposal-class-properties",
    "source-map-support"
  ],
  "presets": [
    [
      "@babel/preset-env",
      {
        "targets": {
          "node": "10"
        }
      }
    ],
    "@babel/preset-typescript"
  ]
}