jsx-curly-braces

Ensure consistent use of curly braces around JSX expressions.

Invalid:

const foo = <Foo foo=<div/>/>;
const foo = <Foo str={"foo"}/>;
const foo = <div>{"foo"}</div>;

Valid:

const foo = <Foo foo={<div/>}/>;
const foo = <Foo str="foo"/>;
const foo = <div>foo</div>;