Enforces coding style that user-defined JSX components are defined and referenced in PascalCase.
The following patterns are considered warnings:
<testComponent />
<testComponent>
<div />
</testComponent>
<test_component />
<YELLING />
The following patterns are not considered warnings:
<TestComponent />
<TestComponent>
<div />
</TestComponent>
<CSSTransitionGroup />
If you are not using JSX.