fix(datepicker): date fns date format

[yggg]

Please read and mark the following check list before creating a pull request:

• I read and followed the CONTRIBUTING.md guide.
• I read and followed the New Feature Checklist guide.

Short description of what this resolves:

Closes #1056

[nnixaa]

@yggg the build is failing

[nnixaa]

@yggg ping

[codecov]

Codecov Report

Merging #1172 into master will decrease coverage by 0.36%.
The diff coverage is 60.34%.

@@            Coverage Diff             @@
##           master    #1172      +/-   ##
==========================================
- Coverage   79.85%   79.49%   -0.37%     
==========================================
  Files         202      202              
  Lines        6230     6266      +36     
  Branches      492      503      +11     
==========================================
+ Hits         4975     4981       +6     
- Misses       1141     1165      +24     
- Partials      114      120       +6

Impacted Files	Coverage Δ
...heme/components/datepicker/datepicker.directive.ts	61.66% <47.61%> (-11.92%)	⬇️
...heme/components/datepicker/datepicker.component.ts	80.95% <62.96%> (-4.58%)	⬇️
...amework/date-fns/services/date-fns-date.service.ts	73.68% <80%> (-3.24%)	⬇️
.../theme/components/datepicker/datepicker-adapter.ts	64.7% <0%> (-2.95%)	⬇️
...nents/calendar-kit/services/native-date.service.ts	98.52% <0%> (+1.47%)	⬆️

[mayanksudden]

Hi yggg,

Validation failed with date fns date format.
I also used your above updated file date-fns-date.service.ts and datepicker.component.ts.
But there are some error on compile.
Screen-shots attached.
Could you share the specific file for this issue?

I am using below version
"@nebular/theme": "4.5.0",

[varnguyen]

Hi @Tibing,
I think the reactive form issue has not been resolved.
I am using Angular 9 and Nebular 5.0.
I have looked into the issues but have yet to find a solution.