Hello there,
is there any way how to find out if core-js is already applied on the page? I want to import it only if I have to. We were using _babelPolyfill property on window/global before, but after upgrading to babel@7 this is not the case anymore.
From [email protected], in (window|global)['__core-js-shared__'].versions see versions in the global mode:

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[email protected], in(window|global)['__core-js-shared__'].versionssee versions in theglobalmode: