WorkerScript is missing a property ready to designate when the script specified has been loaded. If you send messages before this has happened, you'll get the following warning:
I propose adding a ready property, so you can actually check whether the WorkerScript object is ready or not.
|For Gerrit Dashboard: QTBUG-80413|
|283926,6||src/qmlworkerscript: Add ready property to WorkerScript||5.15||qt/qtdeclarative||Status: MERGED||+2||0|