Try adding a very basic lgtm.yml
file, to prevent LGTM complaining about unused variables (issue 11965)
#12562
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Please note: I cannot be sure if this actually helps, since we've not enabled LGTM for the PDF.js repository[1], however I hope that it should stop LGTM reporting things that we're already using ESLint to enforce.
(Even though we're currently not intending to integrate LGTM here, since #11965 was closed, this patch shouldn't hurt.)
[1] In case the patch does nothing, we can simply revert it and move on :-)