Rule suggestion: prefer emptyList() over listOf()

[FloEdelmann]

Expected Rule behavior

// Should fail:
val foo: List<String> = listOf()
val bar = listOf<String>()

// Should pass:
val baz: List<String> = emptyList()
val boo = emptyList<String>()

val far = mutableListOf<String>()
val faz = listOf("foo")

Additional information

• Current version of ktlint: 1.4.1
• Styleguide section: not applicable (emptyList is not mentioned in the Kotlin Coding Conventions or Android Kotlin Style Guide)
• https://stackoverflow.com/questions/48741473/what-is-the-function-of-emptylist-in-kotlin
• https://kotlinlang.org/api/core/kotlin-stdlib/kotlin.collections/empty-list.html
• https://kotlinlang.org/api/core/kotlin-stdlib/kotlin.collections/list-of.html

[paul-dingemans]

I have some doubts whether this should be a Ktlint rule. It is not really related to lint/formatting but more an inspection kind of rule. If such a rule would be added it should be a bit more generic and also take setOf() and mapOf into account. As this is not mentioned in the style guides, it can only be added and activated by default in ktlint_official code style. For other code styles it will need to be enabled explicitly.