[fix] do not collapse whitespace-only css vars #7303
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This should also fix the issue with |
| @@ -145,6 +145,8 @@ class Declaration { | |||
| ? this.node.value.children[0] | |||
| : this.node.value; | |||
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| if (first.type === 'Raw' && /^\s+$/.test(first.value)) return; | |||
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I checked that the below statement is a syntax error. So this regex is ok.
div {
--foo:;
}
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@geoffrich Perhaps it would be useful to put a code comment here as to why we check this, since this applies specifically to chrome only.
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I added an explanatory comment, thanks for the suggestion!
bluwy
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Feb 23, 2022
himanshiLt
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Mar 3, 2022
Fixes sveltejs#7152, see also sveltejs#7288 --foo:; used to be an invalid CSS custom property value, while -foo: ; was valid. By collapsing the whitespace in these declaration values, we were breaking scenarios where an empty custom property was desired. The spec was updated to trim whitespace and treat these values identically, but Chromium browsers still treat --foo; as invalid. This was recently fixed and will be released in Chrome 99, but this would still be a good fix to maintain backwards compatibility.
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Fixes #7152, see also #7288
--foo:;used to be an invalid CSS custom property value, while-foo: ;was valid. By collapsing the whitespace in these declaration values, we were breaking scenarios where an empty custom property was desired.Note that the spec was updated to trim whitespace and treat these values identically, but Chromium browsers still treat
--foo;as invalid. This was recently fixed and will be released in Chrome 99, but this would still be a good fix to maintain backwards compatibility.Before submitting the PR, please make sure you do the following
[feat],[fix],[chore], or[docs].Tests
npm testand lint the project withnpm run lint