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

{
  "minNodeVersion": "8.0.0",
  "plugins": [
    ["proposal-private-methods", { "loose": true }],
    ["proposal-class-properties", { "loose": true }]
  ],
  "parserOpts": {
    "allowReturnOutsideFunction": true
  }
}