- tests are not compiled with babel and must thus be in
es5
- we don't use polyfills, so we need to make sure no
functions aren't used that are not supported by popular browsers. (like Object.assign in Safari and IE11)
- Boths are errors that usually only appear when running
tests in SauceLabs, which happens only on _after_
merging a PR.
I suspect that the current problems with
saucelabs are due to a change transitive
dependency, but I'm not sure. I'm not
adding the package-lock.json to ensure
that this does not happen in the future.