Load jest config from package.json if no dedicated config file found

[aj8k]

This PR fixes #228

Hi! Initially tried to fix the issue with help of updated version of c12 library #371, but it breaks build and makes PR too big. So here is a simplified version.

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟢	Statements	95.43% (+0.02% 🔼)	835/875
🟢	Branches	88.77% (-0.19% 🔻)	419/472
🟢	Functions	93.64%	162/173
🟢	Lines	95.06% (+0.02% 🔼)	750/789

Show files with reduced coverage 🔻

St.❔	File	Statements	Branches	Functions	Lines
🟢	... / parseJestConfig.ts	100%	80% (-20% 🔻)	100%	100%

Test suite run success

166 tests passing in 57 suites.

Report generated by 🧪jest coverage report action from 9c022eb

[aj8k]

@ArtiomTr I have a question if these thresholds have any effect at all? I could see that in https://github.com/ArtiomTr/jest-coverage-report-action/blob/main/src/stages/createReport.ts that the red/yellow/green circle should come from formatCoverage function. But it takes only one number as threshold, not 4 as in jest config. And actually it is undefined in all usages of this function. And looks like the indicators always shows status comparing with default 60% coverage. Do I miss something, as actually this PR should work, it actually work but doesn't change indicator statuses based on my thresholds.

[ArtiomTr]

Hey @aj8k 👋,

No, currently thresholds do not affect the colours of those circles. However, thresholds are a necessary part of this action, as they validate your coverage and report errors.

Fixing the colours of those circles isn't a straightforward thing to do. The fix is planned for the v3 version.

Thank you for your contribution!

[ArtiomTr]

@all-contributors please add @aj8k for code

[allcontributors]

@ArtiomTr

I've put up a pull request to add @aj8k! 🎉

[ArtiomTr]

The fix is now available under v2.2.4 or just v2 versions.

[aj8k]

Oh, I see. Thanks for quick response!