/**
 * Make `import './thing.css'` a no-op under the Node test runner.
 *
 * Vite turns a CSS import into a side effect that injects a stylesheet; Node
 * has no such notion and refuses the file outright with
 * ERR_UNKNOWN_FILE_EXTENSION. That is fine for the pure tests, which never
 * import a component — but the map has to be MOUNTED to be tested at all, and
 * leaflet's own stylesheet comes with it.
 *
 * Styling is not what those tests check. They count polylines and markers in
 * the document, which leaflet creates regardless of whether any CSS loaded. So
 * every `.css` specifier resolves to an empty module and the import vanishes.
 */
export function resolve(specifier, context, next) {
  if (specifier.endsWith('.css')) {
    return { url: 'data:text/javascript,export default {}', shortCircuit: true };
  }
  return next(specifier, context);
}