Hi.. I found a simple typo.. https://arturbosch.github.io/detekt/style.html#noncompliant-code-39

a?.let { 1.plus(1) } // can be replaced with `if (a == null) 1.plus(1)`

to

a?:let { 1.plus(1) } // can be replaced with `if (a == null) 1.plus(1)`
a?.let { 1.plus(1) } // can be replaced with `if (a != null) 1.plus(1)`

https://github.com/detekt/detekt/pull/2969 Thanks for report it!

Thank you. I wasn't confident in open the PR, but it seemed too simple to post as an issue. I'll try next time 😄

Looking forward to it :)