Fix: TypeError in matchConnection and findADConnectionWithoutDomain for enterprise connections with null/undefined domains (#2749) - #2758

**Added**
- feat(types): ship TypeScript definitions directly from the lock repo
[\#2763](#2763)
([ankita10119](https://github.com/ankita10119))

**Changed**
- chore(deps): upgrade webpack-dev-server to v5, auth0-password-policies
to 3.1.0, and fix dev setup
[\#2771](#2771)
([ankita10119](https://github.com/ankita10119))

**Deprecated**
- chore: remove deprecated yammer, renren, miicard strategies
[\#2747](#2747)
([omarquazi-okta](https://github.com/omarquazi-okta))

**Fixed**
- Fix: TypeError in matchConnection and findADConnectionWithoutDomain
for enterprise connections with null/undefined domains (#2749)
[\#2758](#2758)
([ankita10119](https://github.com/ankita10119))

**Added**
- feat(types): ship TypeScript definitions directly from the lock repo
[\#2763](#2763)
([ankita10119](https://github.com/ankita10119))

**Changed**
- chore(deps): upgrade webpack-dev-server to v5, auth0-password-policies
to 3.1.0, and fix dev setup
[\#2771](#2771)
([ankita10119](https://github.com/ankita10119))

**Deprecated**
- chore: remove deprecated yammer, renren, miicard strategies
[\#2747](#2747)
([omarquazi-okta](https://github.com/omarquazi-okta))

**Fixed**
- Fix: TypeError in matchConnection and findADConnectionWithoutDomain
for enterprise connections with null/undefined domains (#2749)
[\#2758](#2758)
([ankita10119](https://github.com/ankita10119))

…D screen (#2841)

### Changes

`connection/enterprise.js`
- `matchConnection`: added null guard on x.get('domains') before calling
`.contains()` - prevents a crash when a connection has no domains
configured
- `findADConnectionWithoutDomain`: same null guard before calling
`.isEmpty()`

 ` connection/enterprise/hrd_screen.jsx`
- Changed `domain !== null `to `domain` && `domain.trim()` - empty or
whitespace-only domain strings now fall back to the generic login
instructions instead of interpolating a blank value into the enterprise
instructions string

### References

- #2736 - "Fix: TypeError in matchConnection for enterprise connections
with no domains" (merged Mar 17, 2026, closes #2733)
- #2758 - "Fix: TypeError in matchConnection and
findADConnectionWithoutDomain for null/undefined domains" (merged Apr 1,
2026, closes #2749)

### Testing

* [ ] This change adds unit test coverage
* [ ] This change adds integration test coverage
* [ ] This change has been tested on the latest version of the
platform/language

New test file `matchConnection.test.js` covers:
  - Matching a connection by email domain
  - No match when domain differs
  - No throw when a connection has null domains
  - Returns false for an email with no domain part

`hrd_screen.test.js` adds two new cases:
  - Empty string domain falls back to generic instructions
  - Whitespace-only domain falls back to generic instructions

  All 407 tests pass.

### Checklist

* [ ] I have read the [Auth0 general contribution
guidelines](https://github.com/auth0/open-source-template/blob/master/GENERAL-CONTRIBUTING.md)
* [ ] I have read the [Auth0 Code of
Conduct](https://github.com/auth0/open-source-template/blob/master/CODE-OF-CONDUCT.md)
* [ ] All code quality tools/guidelines have been run/followed
* [ ] All relevant assets have been compiled