.babelrc for JS projrect

.babelrc

{
  "install-then-remove": "npm i -D babel-plugin-transform-class-properties babel-preset-es2015 babel-preset-stage-2",
  "presets": [
    "es2015",
    "stage-2"
  ],
  "plugins": [
    "transform-class-properties"
  ]
}