noInvalidGridAreas

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Diagnostic Category: lint/correctness/noInvalidGridAreas

Since: v1.9.0

Sources:

Same as: stylelint/named-grid-areas-no-invalid

Description

Disallows invalid named grid areas in CSS Grid Layouts.

For a named grid area to be valid, all strings must define:

the same number of cell tokens
at least one cell token

And all named grid areas that spans multiple grid cells must form a single filled-in rectangle.

Examples

Invalid

a { grid-template-areas: "a a"
                         "b b b"; }

code-block.css:1:26 lint/correctness/noInvalidGridAreas ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Inconsistent cell count in grid areas are not allowed.
  
  > 1 │ a { grid-template-areas: “a a”
      │                          ^^^^^
    2 │                          “b b b”; }
    3 │ 
  
  ℹ Consider adding the same number of cell tokens in each string.

a { grid-template-areas: "b b b"
                         ""; }

code-block.css:1:33 lint/correctness/noInvalidGridAreas ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Empty grid areas are not allowed.
  
  > 1 │ a { grid-template-areas: “b b b”
      │                                 
  > 2 │                          ""; }
      │                          ^^
    3 │ 
  
  ℹ Consider adding the cell token within string.

a { grid-template-areas: "a a a"
                         "b b a"; }

code-block.css:1:33 lint/correctness/noInvalidGridAreas ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Duplicate filled in rectangle are not allowed.
  
  > 1 │ a { grid-template-areas: “a a a”
      │                                 
  > 2 │                          “b b a”; }
      │                          ^^^^^^^
    3 │ 
  
  ℹ Consider removing the duplicated filled-in rectangle: a

Valid

a { grid-template-areas: "a a a"
                         "b b b"; }

a { grid-template-areas: "a a a"
                         "a a a"; }

How to configure

{
  "linter": {
    "rules": {
      "correctness": {
        "noInvalidGridAreas": "error"
      }
    }
  }
}