9cdce03e16
Null receiver guards (which look like "t1.toString;") are removed in more cases where the following JS fragment would throw a TypeError on the same value. Change-Id: I3872f00c90432077199542f4485b8e991f82fa21 Reviewed-on: https://dart-review.googlesource.com/c/89765 Commit-Queue: Stephen Adams <sra@google.com> Reviewed-by: Sigmund Cherem <sigmund@google.com>