Constant JSX_HIGHLIGHT_QUERY 

pub const JSX_HIGHLIGHT_QUERY: &'static str = "(jsx_opening_element (identifier) @tag)\r\n(jsx_closing_element (identifier) @tag)\r\n(jsx_self_closing_element (identifier) @tag)\r\n(jsx_attribute (property_identifier) @attribute)\r\n";

The syntax highlighting query for JSX.