message: Don't use window.setTimeout
diff: @@ -3,7 +3,7 @@ import Notice from '../notice';
  export default function makeFilter(): Filter {
  let lastNoticeJSON: string;
  - let timeout: number;
  + let timeout;
  return function(notice: Notice): Notice | null {
  let s = JSON.stringify(notice.errors);
  @@ -16,7 +16,7 @@ export default function makeFilter(): Filter {
  }
  lastNoticeJSON = s;
  - timeout = window.setTimeout(() => {
  + timeout = setTimeout(() => {
  lastNoticeJSON = '';
  }, 1000);
  