# Kotlin JS - annotations processor **URL:** \ **Category:** JavaScript\ **Created:** [September 2, 2017, 8:18pm UTC](https://discuss.kotlinlang.org/t/kotlin-js-annotations-processor/4436 "2017-09-02T20:18:31Z")\ **Posts on this page:** 1\ **Showing post:** 10
**Author:** ![jdemeulenaere](https://avatars.discourse-cdn.com/v4/letter/j/ecc23a/32.png) [@jdemeulenaere](https://discuss.kotlinlang.org/u/jdemeulenaere)\ **Post date:** [April 3, 2018, 8:47pm UTC](https://discuss.kotlinlang.org/t/kotlin-js-annotations-processor/4436/10 "2018-04-03T20:47:16Z")
All right, thanks a lot. Another question related to annotation processing, is there a way to get any information regarding a variable type nullability ? For another project I am manipulating an ExecutableElement, and I’d like to know for each of its parameters and return type if I should consider it as nullable or not, i.e. I would like to differentiate between a String parameter coming from java (always nullable) or a String parameter coming from Kotlin (not nullable by default). Maybe you added some metadata somewhere to have this kind of information ? I can start a new thread if you think it’s preferable. Thanks --- _[View the full topic](https://discuss.kotlinlang.org/t/kotlin-js-annotations-processor/4436)._