strict checking for package examples

[danielpeintner]

relates to #758

[codecov-commenter]

Codecov Report

Merging #1049 (ca2de58) into master (7340a59) will decrease coverage by 0.24%.
Report is 13 commits behind head on master.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1049      +/-   ##
==========================================
- Coverage   75.78%   75.55%   -0.24%     
==========================================
  Files          80       80              
  Lines       15303    15342      +39     
  Branches     1444     1460      +16     
==========================================
- Hits        11597    11591       -6     
- Misses       3673     3717      +44     
- Partials       33       34       +1     

Files Changed	Coverage Δ
packages/binding-http/src/routes/action.ts	57.42% <100.00%> (+2.88%)	⬆️
packages/core/src/exposed-thing.ts	66.91% <100.00%> (+0.14%)	⬆️
packages/core/src/helpers.ts	82.26% <100.00%> (+0.04%)	⬆️

... and 14 files with indirect coverage changes

[danielpeintner]

I think the PR should be ready now...

[danielpeintner]

I am not sure what we do with CI "codecov/project" failing. I guess we can ignore it for now.

[relu91]

Looks fine, thank you!! let's merge it.