CSS multiple ampersand support

[mpech]

Not really part of the spec (as far as I know)

but lightningcss supports it, esbuild not really but does not fail on it

playground

example of translation (if it helps)
lightningcss (1.25.1):

.vr-ZQJbCW-test.vr-ZQJbCW-test {
  color: pink;
}
.vr-ZQJbCW-test div:is(.vr-ZQJbCW-test div):is(.vr-ZQJbCW-test div) {
  color: pink;
}

esbuild (0.23.0):

.src_test {
  & {
    color: pink;
  }
  div {
    & {
      color: pink;
    }
  }
}

it would be really nice if biome can support &+ syntax, as copying :is() is really cumbersome

[denbezrukov]

I think it's a bug.
Thank you for the report!