packages/babel-standalone/examples/example.htm

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
    <title>babel-standalone example</title>
  </head>
  <body>
    Input:
    <textarea id="input" style="width: 100%" rows="10">
const getMessage = () => 'Hello World';
const someDiv = <div>{getMessage()}</div>;
</textarea
    >

    Transformed code using Babel <strong id="version"></strong>:
    <pre id="output">Loading...</pre>

    <script src="../babel.js"></script>
    <script>
      console.log("Babel =", Babel);
      document.getElementById("version").innerHTML = Babel.version;
      var inputEl = document.getElementById("input");
      var outputEl = document.getElementById("output");

      function transform() {
        try {
          outputEl.innerHTML = Babel.transform(inputEl.value, {
            presets: [
              "es2015",
              "react",
              [
                "stage-0",
                {
                  pipelineProposal: "fsharp",
                },
              ],
            ],
          }).code;
        } catch (ex) {
          outputEl.innerHTML = "ERROR: " + ex.message;
        }
      }

      inputEl.addEventListener("keyup", transform, false);
      transform();
    </script>
  </body>
</html>