`JSX Transform` ↔ JSX translated to `React.createElement()` calls

!deprecated old version transforms JSX in code

import React from "react";
function App() {
  return <h1\>App</h1\>;
}

into

import React from "react";
function App() {
  return React.createElement("h1", null, "App");
}

React 17 updated JSX transform to no longer require React import!

function App() {
  return <h1\>App</h1\>
}

transpiles to

import {jsx as _jsx} from "react/jsx-runtime";
function App() {
  return _jsx("h1", {children: "App" });
}

JSX Transform ↔ JSX translated to React.createElement() calls