AFAICT: cpy uses graceful-fs, which in turn should use fs.copyFile to copy files. How fs.copyFile handles timestamps seems to be platform dependent. Now there's a new fs.cp in recent NodeJs versions that has a special option called preserveTimestamps, fs-extra has it too.
So I would like to propose to add this option in cpy as well - not only for files, but for directories too (cp -a).
sindresorhus / cpy
Copy files
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