‹div›
  ‹h1›Hello‹/h1›
‹/div›;

‹div›
  ‹h1›Hello‹/h1›
  World
‹/div›;

const CustomComp = (props) =› ‹div›props.children‹/div›
‹CustomComp›
  ‹div›Hello World‹/div›
  {"This is just a JS expression..." + 1000}
‹/CustomComp›