add TypeScript definition for paintMasks()

[incanus]

As with #587, this is a simple addition of another method (paintMasks()) to the TypeScript definitions.

[codecov]

Codecov Report

Merging #591 (a5118e4) into legacy (192058e) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           legacy     #591   +/-   ##
=======================================
  Coverage   83.58%   83.58%           
=======================================
  Files         163      163           
  Lines        5603     5603           
  Branches     1397     1397           
=======================================
  Hits         4683     4683           
  Misses        820      820           
  Partials      100      100           

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[incanus]

Hi, any movement on this? I know that development has shifted to another branch, but this is needed in the current stable version.

[targos]

Hello, I cannot merge because of the linter error. You can run npm run prettier-write to fix it.

[incanus]

Ah — this was the case with my other recent PR #587 so I did not think it important. I will update the PR.