@babel/preset-env: `DEBUG` option

Using targets:
{}

Using modules transform: auto

Using plugins:
  transform-template-literals {}
  transform-literals {}
  transform-function-name {}
  transform-arrow-functions {}
  transform-block-scoped-functions {}
  transform-classes {}
  transform-object-super {}
  transform-shorthand-properties {}
  transform-duplicate-keys {}
  transform-computed-properties {}
  transform-for-of {}
  transform-sticky-regex {}
  transform-dotall-regex {}
  transform-unicode-regex {}
  transform-spread {}
  transform-parameters {}
  transform-destructuring {}
  transform-block-scoping {}
  transform-typeof-symbol {}
  transform-new-target {}
  transform-regenerator {}
  transform-exponentiation-operator {}
  transform-async-to-generator {}
  proposal-async-generator-functions {}
  proposal-object-rest-spread {}
  proposal-unicode-property-regex {}
  proposal-json-strings {}
  proposal-optional-catch-binding {}
  transform-named-capturing-groups-regex {}
  transform-member-expression-literals {}
  transform-property-literals {}
  transform-reserved-words {}

Using polyfills with `entry` option:

[<CWD>/src/in.js] Import of core-js was not found.
Successfully compiled 1 file with Babel.