less / less/less.js

no warning when extended class is missing inside @media

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#2,486 1 comment 0 reactions 0 assignees View on GitHub

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bug low priority
Dominant language
JavaScript
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Avg merge
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Merged PRs (30d)
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Description

for the following code:

@media print {
    .not {
        p: 2;
    }
    p2 {
        &:extend(.not2);
    }
}

expected: extend ' .not2' has no matches

See also:
https://github.com/less/less.js/issues/2449

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  3. Fork the repository and make your change on a branch.
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Research direction

Reproduce the supplied Less snippet and compare the compiler output with the expected missing-match warning. Trace handling for nested @media and &:extend; done means the warning is emitted for the missing .not2 selector without breaking valid extends.

Written by the indexing model from the issue text.

Assessment

Tech stack
css, javascript
Domain
compilers
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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