nwb/lib/preact/preact-preset.js

A toolkit for React, Preact & Inferno apps, React libraries and other npm modules for the web, with no configuration (until you need it)

"use strict";

module.exports = function () {
  return {
    plugins: [[require.resolve('@babel/plugin-transform-react-jsx'), {
      pragma: 'h',
      pragmaFrag: 'Fragment'
    }]]
  };
};