Drop duplicate custom properties
npm install postcss-dropdupedvars
postcss -u postcss-dropdupedvars -o dist/index.css src/index.cssAssuming you have some variables defined that are overridden in the same rule:
:root {
--prefix-component-background-color: blue;
--prefix-component-width: 10px;
--prefix-component-height: 10px;
--prefix-component-size: 10px;
--prefix-component-width: 12px;
--prefix-component-height: 12px;
}The the overridden definitions will be removed from output:
:root {
--prefix-component-background-color: blue;
--prefix-component-size: 10px;
--prefix-component-width: 12px;
--prefix-component-height: 12px;
}