message: chore: fix TS 3.9 error in dematerialize test
diff: @@ -50,7 +50,7 @@ describe('dematerialize operator', () => {
  });
  it('should dematerialize a sad stream', () => {
  - const values = {
  + const values: Record<string, Notification<string | undefined>> = {
  a: Notification.createNext('w'),
  b: Notification.createNext('x'),
  c: Notification.createNext('y'),
  