I start seeing in many repos that Kotlin file names are starting small letter like

resourceProvider.kt

or

viewExt.kt

. Is it an official convention? I couldn’t find anything in Coding Conventions about it Thread in #codingconventions

Are there classes in these files, or is it just global methods/variables? This could be an interesting way to indicate at a glance that there’s no class in the file.

I personally use lowercase file names when there's no clear owning class inside (e.g. a file with multiple utility classes and top level declarations)

I thought at one point is was recommended that if there’s multiple classes, the file should be named after the first or most important one