@babel/preset-env: `DEBUG` option

Using targets:
{
  "node": "12"
}

Using modules transform: auto

Using plugins:
  proposal-class-static-block { node < 16.11 }
  proposal-private-property-in-object { node < 16.9 }
  syntax-class-properties
  proposal-private-methods { node < 14.6 }
  proposal-numeric-separator { node < 12.5 }
  proposal-logical-assignment-operators { node < 15 }
  proposal-nullish-coalescing-operator { node < 14 }
  proposal-optional-chaining { node < 16.9 }
  syntax-json-strings
  syntax-optional-catch-binding
  syntax-async-generators
  syntax-object-rest-spread
  proposal-export-namespace-from { node < 13.2 }
  transform-modules-commonjs
  proposal-dynamic-import

Using polyfills: No polyfills were added, since the `useBuiltIns` option was not set.
