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     Technical task Technical task
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    Resolution: Unresolved
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    P2: Important 
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    None
import QtQuick import QtQuick.Window Window { width: 640 height: 480 visible: true title: qsTr("Hello World") Item { id: foo } Component.onCompleted: { const fooIsItem = foo instanceof Item console.log("foo is item: " + fooIsItem) } }
runs into
Warning: Main.qml:19:42: Could not compile binding for onCompleted: Instruction "generate_CmpInstanceOf" not implemented [compiler]
        const fooIsItem = foo instanceof Item
                                         ^^^^