feat(css_formatter): formatting support for supports at-rules #1348
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Summary
#1285. Support for
@supports
! These rules are also very similar to media query and container query lists. I'm not sure if there's a great way to genericize the formatting for them, since they all need independent nodes for the syntax tree, but the formatting structure is very similar (group, soft block indent, and/not/or conditions, etc.).Test Plan
Copied over the parser spec tests with whitespace changes to cover all of the various permutations. This test suite again shows the need for a mechanism to lowercase keywords.