check if eslint config should change prefer-arrow-callback setting

[JoernBerkefeld]

somehow it's automatically turning arrow functions into old fashioned function notation for all tests.

https://eslint.org/docs/rules/prefer-arrow-callback

Originally posted by @JoernBerkefeld in #108 (comment)

[DougMidgley]

https://github.com/prettier/eslint-plugin-prettier#arrow-body-style-and-prefer-arrow-callback-issue basically covers this. In the interests of keeping the standards, prefer to keep OOTB recommendation

[JoernBerkefeld]

Wrong issue?

[DougMidgley]

Updated link:)

[JoernBerkefeld]

Question remains why your 3 test classes are - across our 2 projects - the only place eslint/prettier auto-replaced this. I find that rather strange