@babel/preset-env: `DEBUG` option

Using targets:
{
  "chrome": "80"
}

Using modules transform: auto

Using plugins:
  proposal-class-properties { "chrome":"80" }
  proposal-private-methods { "chrome":"80" }
  syntax-numeric-separator { "chrome":"80" }
  proposal-logical-assignment-operators { "chrome":"80" }
  syntax-nullish-coalescing-operator { "chrome":"80" }
  syntax-optional-chaining { "chrome":"80" }
  syntax-json-strings { "chrome":"80" }
  syntax-optional-catch-binding { "chrome":"80" }
  syntax-async-generators { "chrome":"80" }
  syntax-object-rest-spread { "chrome":"80" }
  transform-modules-commonjs { "chrome":"80" }
  proposal-dynamic-import { "chrome":"80" }
  proposal-export-namespace-from {}

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