message: Clarify who is meant to use the polyfill
diff: @@ -14,8 +14,10 @@ See the License for the specific language governing permissions and
  limitations under the License.
  */
  +// This is intended to fix re-resizer because of its unguarded `instanceof TouchEvent` checks.
  export function polyfillTouchEvent() {
  - // Firefox doesn't have touch events, so create a fake one we can rely on lying about.
  + // Firefox doesn't have touch events without touch devices being present, so create a fake
  + // one we can rely on lying about.
  if (!window.TouchEvent) {
  // We have no intention of actually using this, so just lie.
  window.TouchEvent = class TouchEvent extends UIEvent {
  