message: No working push on Firefox
diff: @@ -87,7 +87,8 @@ const browserPredicates: {
  },
  'Firefox': {
  es2015: since(51),
  - push: since(36),
  + // Firefox bug - https://bugzilla.mozilla.org/show_bug.cgi?id=1409570
  + push: () => false,
  serviceworker: since(44),
  modules: () => false,
  },
  