Comment by nostrademons

About 2/3 of those (1.7M) were from babel-code-frame, which is a core dependency of babel:

https://www.npmjs.com/package/babel-code-frame

And the fix was just to drop the functionality and inline the function as a no-op:

https://github.com/babel/babel/commit/09287643c712bcd203bbd6...