babel/packages/babel-plugin-proposal-class-properties/test/fixtures/private-loose/options.json

{
  "plugins": [
    ["external-helpers", { "helperVersion": "7.100.0" }],
    ["proposal-class-properties", { "loose": true }],
    "transform-classes",
    "transform-block-scoping",
    "syntax-class-properties"
  ]
}