babel/packages/babel-plugin-proposal-private-methods/test/fixtures/private-method/async/options.json

{
  "minNodeVersion": "8.0.0",
  "plugins": [
    ["external-helpers", { "helperVersion": "7.1000.0" }],
    "proposal-private-methods",
    "proposal-class-properties"
  ],
  "parserOpts": {
    "allowReturnOutsideFunction": true
  }
}