noUnknownSelectorPseudoElement (since v1.8.0)
Diagnostic Category: lint/nursery/noUnknownSelectorPseudoElement
Sources:
Disallow unknown pseudo-element selectors.
For details on known CSS pseudo-elements, see the MDN web docs.
This rule ignores vendor-prefixed pseudo-element selectors.
Examples
Section titled ExamplesInvalid
Section titled Invalida::pseudo {}code-block.css:1:4 lint/nursery/noUnknownSelectorPseudoElement ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ Unexpected unknown pseudo-elements: pseudo
> 1 │ a::pseudo {}
│ ^^^^^^
2 │
ℹ See MDN web docs for more details.
ℹ Use a known pseudo-elements instead, such as:
- after
- backdrop
- before
- etc.
a::PSEUDO {}code-block.css:1:4 lint/nursery/noUnknownSelectorPseudoElement ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ Unexpected unknown pseudo-elements: PSEUDO
> 1 │ a::PSEUDO {}
│ ^^^^^^
2 │
ℹ See MDN web docs for more details.
ℹ Use a known pseudo-elements instead, such as:
- after
- backdrop
- before
- etc.
a::element {}code-block.css:1:4 lint/nursery/noUnknownSelectorPseudoElement ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ Unexpected unknown pseudo-elements: element
> 1 │ a::element {}
│ ^^^^^^^
2 │
ℹ See MDN web docs for more details.
ℹ Use a known pseudo-elements instead, such as:
- after
- backdrop
- before
- etc.
Valid
Section titled Valida:before {}a::before {}::selection {}input::-moz-placeholder {}