flutter_bloc: Fix provider exception

[ookami-kb]

Status

READY

Breaking Changes

NO

Description

If BLoC depends on something injected with Provider and it's not lazily created, the exception is wrapped into FlutterError and provides description related to BlocProvider. That is wrong and confusing for the client as the problem is not in missing BLoC.

This PR fixes the error by checking the valueType of the thrown exception.

Todos

• Tests
• Documentation
• Examples

[codecov]

Codecov Report

Merging #1286 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master     #1286   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            8         8           
  Lines          143       144    +1     
=========================================
+ Hits           143       144    +1     

Impacted Files	Coverage Δ
packages/flutter_bloc/lib/src/bloc_provider.dart	100.00% <0.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b895443...7306d9f. Read the comment docs.

[felangel]

Thanks for the contribution! I really appreciate it 💯