Enforces coding style that user-defined JSX components are defined and referenced in PascalCase.

https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-pascal-case.md

The following patterns are considered warnings:

<Test_component />

<TEST_COMPONENT />

The following patterns are not considered warnings:

<div />

<TestComponent />

<TestComponent>
  <div />
</TestComponent>

<CSSTransitionGroup />