fix: preserve protocol-less hostnames with ports in isURL

[codefix-patchflow]

What failed

The scheme regex treated my-3272-service: as a protocol and removed it, so 9000 was validated as the hostname and the URL returned false.

What changed

Protocol detection now leaves hostname:numeric-port inputs on the existing host and port parsing path. The reported input was added to the protocol-less URL regression cases

• src/lib/isURL.js around line 88 (modified, +4/-1)
• test/validators.test.js around line 499 (modified, +1/-0)

Why this works

Numeric text after the first colon is parsed as a port, while explicit protocols and nonnumeric schemes continue through the existing protocol validation, including its security checks

Expected result

validator.isURL('my-3272-service:9000', { requiretld: false, requirevalidprotocol: false }) returns true

Patchflow did not run repository-local commands; the automated review gate checks the patch without assuming the project full runtime environment is available.

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

Automation details

• Job ID: 6575d0fb-0e26-47f7-b599-6638c1ae5797
• Repository: CDEN190/validator.js
• Branch: codefix/6575d0fb-url-returns-false-for-urls-like-some-hostname-90
• Base branch: master
• Reference command: None
• Review gate: automated static review; repository-local commands were not executed.