babel-plugin-jsx/packages/babel-helper-vue-transform-on/index.mjs

function transformOn(obj) {
  const result = {};
  Object.keys(obj).forEach((evt) => {
    result[`on${evt[0].toUpperCase()}${evt.slice(1)}`] = obj[evt];
  });
  return result;
}

export { transformOn as default, transformOn as 'module.exports' };