fix: treat protocol-less host:port URLs as valid in isURL

[codefix-patchflow]

What failed

isURL treated protocol-less service URLs such as my-3272-service:9000 as if my-3272-service were a protocol, so validation returned false after the 13.15.20 update even with require_tld: false and require_valid_protocol: false.

What changed

• src/lib/isURL.js now detects a numeric host:port suffix before consuming text before : as a protocol.
• test/validators.test.js adds the reported my-3272-service:9000 regression case.

Why this works

The parser distinguishes a numeric host:port suffix from a protocol delimiter, so protocol-less service hostnames continue through normal host and port validation while require_protocol still rejects URLs without an explicit protocol.

Expected result

validator.isURL("my-3272-service:9000", { require_tld: false, require_valid_protocol: false }) returns true, and the existing URL validation matrix remains green.

Patchflow did not run repository-local commands during generation; GitHub Actions ran the repository CI on the delivered pull request.

🔧 Fixed automatically by Patchflow — $1/fix · no fix, no fee

Automation details

• Job ID: f131b4ce-95d2-44aa-afbe-b1f8d608ca50
• Repository: CDEN190/validator.js
• Branch: codefix/f131b4ce-describe-the-bug
• Base branch: master