Coverage results differ between local and Github Actions environments

[mttschltz]

Already solved but adding details for posterity.

Context

In 6fbd4fe I set coverage thresholds to be 100% after reaching that level while testing locally.

It passed locally but failed on Github Actions where the percentages were < 100%.

Left = local results; Right = Github Actions

Troubleshooting attempts

I tried

• --no-cache when calling jest, locally and remote
• jest --clearCache locally
• Removing cache: yarn from .github/workflows/matt-fyi-cd.yml
• Cloning and installing the repo from scratch locally
• Updating my local yarn version to be the same as Github Actions (Node version was already the same)

None of those helped.

Changing coverage provider

I changed coverageProvider in Jest from v8 to babel (the actual default) and the results were consistent between local and Github Actions environments.

I have read that v8 is still experimental, though is apparently faster. So we may want to investigate changing back to it in the future.

[mttschltz]

Solved in d89e7b8