Convert the code in src/display/canvas.js
to use standard classes
#13300
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This gets rid of a lot of boilerplate that stems from our old way of simulating classes, and it actually reduces the filesize noticeably.
For e.g.
gulp mozcentral
, the builtpdf.js
files decreases from318 404
to314 722
bytes (~1 percent) with this patch.Much smaller/simpler diff with https://github.com/mozilla/pdf.js/pull/13300/files?w=1