[wp-trac] [WordPress Trac] #52158: Twenty Twenty-One: Clean up CSS build process

[WordPress Trac]

#52158: Twenty Twenty-One: Clean up CSS build process
---------------------------+-----------------------------
 Reporter:  ryelle         |      Owner:  (none)
     Type:  defect (bug)   |     Status:  new
 Priority:  normal         |  Milestone:  Awaiting Review
Component:  Bundled Theme  |    Version:
 Severity:  normal         |   Keywords:
  Focuses:                 |
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 The current Sass + PostCSS build process generates redundant code. The
 Sass step generates source map files we don't use, and the PostCSS step
 generates some duplicate code in `ie.css` & `ie-editor.css`. The PostCSS
 issue is [https://github.com/MadLittleMods/postcss-css-variables/issues/67
 a bug upstream], but we can work around it with
 [https://github.com/cssnano/cssnano/tree/master/packages/postcss-discard-
 duplicates postcss-discard-duplicates].

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Ticket URL: <https://core.trac.wordpress.org/ticket/52158>
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