This pull request ensures the webpack hook is installed before an attempt is made to load the configuration.
This pull request is tested by the PnP tests, which should now be passing as a result of this change.
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Fixes#21679
This implements the compatibility require hook as per https://github.com/vercel/next.js/issues/21789.
The hook is applied at the point of webpack initialization. In addition the separate packages are exposed for the various webpack subrequires.
The test then ensures instance equality for the basic require hook from the next.js config file.
I suspect this might have bad interactions with Yarn Pnp support, but maybe we will be lucky.
Closes#17042
I removed mkdirp from package.json taskfil.js, and ran `yarn && ./check-pre-compiled.sh `. Please let me know if anything else is needed!
(Extracted from #20411)
Note that now compiled webpack has mkdirP function
