Mark new createPrinter vars as pure to remove new code from typingsInstaller #52438
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#52382 added a few new top-level variables to
emitter.ts; but, I noticed in dcad07f (which pulled this change into release-5.0) that typingsInstaller grew by 5000+ lines.This is because the memoize function isn't seen as pure (it could reasonably call the function it accepts immediately). I don't want to totally throw off the bundle size, so just mark the new things as pure to restore the old size.