noUnknownPseudoElement
Summary
Section titled “Summary”- Rule available since:
v1.8.0 - Diagnostic Category:
lint/correctness/noUnknownPseudoElement - This rule is recommended, meaning it is enabled by default.
- This rule doesn’t have a fix.
- The default severity of this rule is error.
- Sources:
How to configure
Section titled “How to configure”{ "linter": { "rules": { "correctness": { "noUnknownPseudoElement": "error" } } }}Description
Section titled “Description”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 “Examples”Invalid
Section titled “Invalid”a::pseudo {}code-block.css:1:4 lint/correctness/noUnknownPseudoElement ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ 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/correctness/noUnknownPseudoElement ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ 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/correctness/noUnknownPseudoElement ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✖ 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.
a:before {}a::before {}::selection {}input::-moz-placeholder {}Options
Section titled “Options”ignore
Section titled “ignore”A list of unknown pseudo-element names to ignore (case-insensitive).
{ "linter": { "rules": { "correctness": { "noUnknownPseudoElement": { "options": { "ignore": [ "custom-pseudo-element" ] } } } } }}::custom-pseudo-element {}Related links
Section titled “Related links”Sponsored by
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