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Report unknown custom properties/media as warning, not error #151

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Merged
marcusosterberg merged 1 commit into from
Jun 12, 2026
Merged

Report unknown custom properties/media as warning, not error #151

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4 changes: 2 additions & 2 deletions configurations/standard.json
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Original file line number Diff line number Diff line change
Expand Up @@ -156,14 +156,14 @@
"no-unknown-custom-media": [
true,
{
"severity": "error",
"severity": "warning",
"message": "Unknown custom media query \u201c%s\u201d"
}
],
"no-unknown-custom-properties": [
true,
{
"severity": "error",
"severity": "warning",
"message": "Unknown custom property \u201c%s\u201d"
}
],
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8 changes: 8 additions & 0 deletions tools/update_stylelint.py
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,14 @@ def update_stylelint_rules():
break

if 'no-unknown' in rule_name:
# Unknown custom properties/media reference values that are
# frequently defined where static analysis can't see them (set at
# runtime via JS, in inline style attributes, on a page that wasn't
# crawled, or built at compile time by PostCSS). A missing one
# degrades gracefully to the initial/inherited value rather than
# producing invalid CSS, so report it as a warning, not an error.
if rule_name in ('no-unknown-custom-properties', 'no-unknown-custom-media'):
rule_config["severity"] = "warning"
rules[rule_name] = [rule_enable, rule_config]
elif 'no-deprecated' in rule_name:
rule_config["severity"] = "warning"
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