You can even specify the tarball checksum if you append #HASH_HERE to the end of the URL! Yarn and npm should also handle caching it in the same way as a regular registry tarball.
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Even better! Thank you for that info
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Ah, looks like it was added in NPM version 5!
Thanks. Twitter will use this to make your timeline better. UndoUndo
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he/him 
Might be an idea for a yarn RFC