Jonathan Desrosiers 1ec56ec5b5 Build/Test Tools: Add the regenerator-runtime script as a dependency to wp-polyfill.
In [51146], the `core-js` package replaced the deprecated `@babel//polyfill` one. The `core-js` package builds `wp-polyfill` from a configuration provided by `@wordpress/babel-preset-default` instead of copying a one size fits all polyfill.

That change caused an issue where plugins and themes relying on the `regenerator-runtime` script being included in the `wp-polyfill.js` file encountering fatal JavaScript errors.

This adds the `regenerator-runtime` package to Core and registers it as a dependency for `wp-polyfill`. While Core does not require `regenerator-runtime`, it will allow for a smoother transition to using `core-js`.

This dependency will be removed in a future version of WordPress, so developers are encouraged to add `regenerator-runtime` as a dependency for any custom script that requires it.

Follow up to [51146].

Props gziolo, herregroen, jeherve, hellofromtonya, peterwilsoncc.
Fixes #52941.

git-svn-id: https://develop.svn.wordpress.org/trunk@51212 602fd350-edb4-49c9-b593-d223f7449a82
2021-06-23 00:04:47 +00:00
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