@babel/preset-env: `DEBUG` option

Using targets:
{
  "chrome": "84"
}

Using modules transform: auto

Using plugins:
  proposal-class-static-block { chrome < 94 }
  proposal-private-property-in-object { chrome < 91 }
  syntax-class-properties
  syntax-numeric-separator
  proposal-logical-assignment-operators { chrome < 85 }
  syntax-nullish-coalescing-operator
  proposal-optional-chaining { chrome < 91 }
  syntax-json-strings
  syntax-optional-catch-binding
  syntax-async-generators
  syntax-object-rest-spread
  transform-modules-commonjs
  proposal-dynamic-import
  proposal-export-namespace-from { }
  syntax-import-assertions

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