Adding explicit source maps to the operator created a breakable location
when viewing source-mapped dart code in chrome devtools. There isn't a
breakable point in the javascript for a `!` operator so trying to enable
the breakpoint visible in the dart code would trigger some "other
breakpoint".
Recent changes in the V8 debugger have changed which "other breakpoint"
would be triggered.
https://chromium.googlesource.com/v8/v8/+/16b0767adc54de6e0154a0a8226e01efecfdbfbb
This causes our tests to fail and makes the user
interaction a little confusing. Removing the extra source map here seems
to be the most reasonable solution because it prevents a possible
breakpoint from appearing where there isn't a breakable location.
Now, the ! operator doesn't introduce any new source mapping it simply
continues the previous mapping.
Change-Id: I5903bfeaf1bcb2e2a3ce883433153575aa1fd05a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/204742
Reviewed-by: Mark Zhou <markzipan@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Commit-Queue: Nicholas Shahan <nshahan@google.com>
Nicholas Shahan
8ff5176a77