[wp-trac] [WordPress Trac] #52941: Remove `@babel/polyfill` in favor of `core-js/stable`.

[WordPress Trac]

#52941: Remove `@babel/polyfill` in favor of `core-js/stable`.
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 Reporter:  desrosj           |       Owner:  (none)
     Type:  task (blessed)    |      Status:  new
 Priority:  normal            |   Milestone:  5.8
Component:  Build/Test Tools  |     Version:
 Severity:  normal            |  Resolution:
 Keywords:                    |     Focuses:
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Comment (by gziolo):

 It looks like we need to create a webpack entry point that imports `core-
 js` and `regenerator-runtime`.

 {{{
 import 'core-js/stable';
 import 'regenerator-runtime/runtime';
 }}}

 They aren't defined as dependencies in `package.json` at the moment.

 Thinking a bit more about other polyfill integrations we might also use
 the copy technique for individual scripts. Similar to how other polyfills
 in #52854 are handled.

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Ticket URL: <https://core.trac.wordpress.org/ticket/52941#comment:3>
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