In translate(), zeros in calc() functions are having units removed

[mprofitlich]

Analog to issue #1160 clean-css deletes unites after 0 in a calc() function within a transform: translateX CSS statement. CSS needs the unit however.

The problem occurs in
transform: translateX(calc(…))
but not in
translate: calc(…) 0

Environment

• clean-css version: 5.3
• node.js version: 20.8.0
• operating system: Mac OS 14.0

Configuration options

.pipe(cleanCSS())

Input CSS

transform: translateX(calc((100% - 1.39vw)/ 4 + 0vw))

Actual output CSS

transform: translateX(calc((100% - 1.39vw)/ 4 + 0))

Expected output CSS

transform: translateX(calc((100% - 1.39vw)/ 4 + 0vw))