list_of_xml_files.js

const ListOfXML = [];

// https://webpack.js.org/guides/dependency-management/#require-context
const requireComponent = require.context(
  // Look for files in a directory
  '/path/to/xml/files',
  // Do not look in subdirectories
  false,
  // Only include ".xml" files
  /.*\.xml$/
)

// For each matching file name...
requireComponent.keys().forEach((fileName) => {
  ListOfXML.push(filename);
})

export default ListOfXML