🐛 CSS parser doesn't support nested pseudo classes

[Zombobot1]

Environment information

CLI:
  Version:                      1.8.3
  Color support:                true

Platform:
  CPU Architecture:             aarch64
  OS:                           macos

Environment:
  BIOME_LOG_DIR:                unset
  NO_COLOR:                     unset
  TERM:                         "xterm-256color"
  JS_RUNTIME_VERSION:           "v20.5.0"
  JS_RUNTIME_NAME:              "node"
  NODE_PACKAGE_MANAGER:         "bun/1.1.20"

Biome Configuration:
  Status:                       Loaded successfully
  Formatter disabled:           false
  Linter disabled:              false
  Organize imports disabled:    false
  VCS disabled:                 true

Workspace:
  Open Documents:               0

What happened?

Crashes on:

.about {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 500px;

  .welcome {
    p:first-child {
      width: 100%;
    }

    p:last-child {
      text-align: center;
    }
  }

  .hierarchy {
    display: flex;

    .hierarchy-item:nth-child(2) {
      padding-left: 12px;
    }

    .hierarchy-item:nth-child(3) {
      padding-left: 24px;
    }
  }
}

Error log:

$ biome lint --write --unsafe --error-on-warnings .
./src/UBook.css:86:19 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Unexpected value or character.
  
    84 │     max-width: 350px;
    85 │ 
  > 86 │     p:first-child {
       │                   ^
  > 87 │       width: 100%;
       │       ^^^^^^^^^^^
    88 │       text-align: center;
    89 │       font-weight: 700;
  
  ℹ Expected one of:
  
  - identifier
  - string
  - number
  - dimension
  - ratio
  - custom property
  - function
  

./src/UBook.css:93:18 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Unexpected value or character.
  
    91 │     }
    92 │ 
  > 93 │     p:last-child {
       │                  ^
  > 94 │       text-align: center;
       │       ^^^^^^^^^^^^^^^^^^
    95 │     }
    96 │   }
  
  ℹ Expected one of:
  
  - identifier
  - string
  - number
  - dimension
  - ratio
  - custom property
  - function
  

./src/UBook.css:96:3 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Expected a qualified rule, or an at rule but instead found '}'.
  
    94 │       text-align: center;
    95 │     }
  > 96 │   }
       │   ^
    97 │ 
    98 │   .hierarchy {
  
  ℹ Expected a qualified rule, or an at rule here.
  
    94 │       text-align: center;
    95 │     }
  > 96 │   }
       │   ^
    97 │ 
    98 │   .hierarchy {
  

./src/UBook.css:117:1 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Expected a qualified rule, or an at rule but instead found '}'.
  
    115 │     }
    116 │   }
  > 117 │ }
        │ ^
    118 │ 
  
  ℹ Expected a qualified rule, or an at rule here.
  
    115 │     }
    116 │   }
  > 117 │ }
        │ ^
    118 │ 
  

Checked 11 files in 13ms. No fixes applied.
Found 4 errors.
lint ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Some errors were emitted while running checks.

Similar to #3287

Expected result

Doesn't crash

Code of Conduct

• I agree to follow Biome's Code of Conduct

[ematipico]

This issue was solved a while ago. You can see that our playground doesn't emit any error: https://biomejs.dev/playground/?files.main.css=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%3D

You can use our latest nightly, it should contain the fix