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2021-03-31-cssnano-5.md

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cssnano-5-release-notes
cssnano 5 release

We have released a new version of cssnano.

Major changes

  • requires Node >= 10.13
  • PostCSS 8 API, so cssnano 5 does not emit warnings when running under PostCSS 8
  • updated to SVGO 2, fixing many SVG minification bugs
  • updated css-value-parser and css-selector-parser, fixing many bugs

Upgrade notes

If you use the cssnano JavaScript API, you need to change your code:

  • Replace cssnano.process() with cssnano().process() (notice the () after cssnano)

  • cssnano specific options go into the options go to cssnano instead of process

cssnano(cssnanoOptions).process(postcssOptions)

Bug fixes

  • fix improperly discarding @font-face declarations #726
  • partially fix some isues where cssnano did not combine rules when used together with postcss-nested #1004
  • fix translate3d() minification #920
  • fix minification of values starting with e #589, #984
  • fix minification of percentage vaalues #962, #957
  • fix minification of aspect-ratio #963
  • fix merging of @supports rules #974
  • fix sorting of longhand and shorthand properties #535
  • remove vulnerable dependency and always warn with bad SVG input #1034