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:has()arguments can be accepted on empty queries, nested:has()can match, and wildcard namespaces are rejected on v2. Backport v3's eager logical validation and forgiving-branch handling so these selectors follow the same rules across all eight DOM selector APIs. ChangingVERBOSITYalso clears compiled failures so verbose retries throw correctly.This preserves v2's released source layout, ES2015 syntax, and existing matching and cache architecture. It adds 18 focused regression tests and runs both maintenance suites through
npm test.Validation:
mastersource.:has()pages pass, up from 105 passing and seven failing. The same pages pass on v3. The separate:has-slottedpseudo-class is outside this backport.fd983776a7cd19ebcda7a2bcb69c74330ee5d8c9, Chrome for Testing 154.0.8037.0. Parsing pages use the existing DOM selector-validity helper. Every selected subtest runs without result filtering.node --check src/nwsapi.jsand the existing ES2015 parse check pass.