The last update of PDF.js (https://github.com/WebKit/WebKit/pull/3771) introduces named constants, we should start using them!
Pull request: https://github.com/WebKit/WebKit/pull/3778
Committed 253916@main (b7e32069a1da): <https://commits.webkit.org/253916@main> Reviewed commits have been landed. Closing PR #3778 and removing active labels.
<rdar://problem/99287359>