Should we enforce trailing commas for Kotlin code?

[sschuberth]

We already do so for TypeScript code. Not enforcing / allowing them for Kotlin code could confuse front-end developers that also do back-end work. So it seems that aligning formatting rules for consistency here is a good idea, even though there probably are more (language-specific) formatting rules where TypeScript (Prettier) vs. Kotlin (Detekt / Ktlint) configurations differ.

[mnonnenmacher]

I would be fine with enabling that rule, it also makes for nicer diffs.

[MarcelBochtler]

So it seems that aligning formatting rules for consistency here is a good idea

I would be fine with the rule, but only if there is a way to automatically detect it, and additionally I have to be able to configure my IDE to automatically handle this.

If one of these requirements is not given, I would like to keep the style guide as-is.

[MarcelBochtler]

Looks like IntelliJ supports this setting:
https://www.jetbrains.com/help/idea/code-style-kotlin.html#other