@ file : Js Export Ċ @ file : Suppress (" NON _ EXPORT ABLE _ TYPE ", Ġ" WRONG _ EXPORT ED _ DECL AR ATION ") Ċ Ċ package Ġkotlinx . collections . inter oper able Ċ Ċ import Ġkotlinx . collections . inter oper able . serializers . Mutable Set Serializer Ċ import Ġkotlinx . serialization . Serializable Ċ import Ġkotlin . js . Js Export Ċ import Ġkotlin . collections . Mutable Set Ġas ĠK Mutable Set Ċ Ċ @ Serializable ( with Ġ= ĠMutable Set Serializer :: class ) Ċ interface ĠMutable Set < E > Ġ: ĠSet < E >, ĠK Mutable Set < E >