tools: DRY isString() in lint rules
This commit makes isString()
a reusable utility function for core's custom ESLint rules.
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
commit message follows commit guidelines
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This commit makes isString()
a reusable utility function for core's custom ESLint rules.
make -j4 test
(UNIX), or vcbuild test
(Windows) passes