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Type: Technical task
Resolution: Unresolved
Priority: P2: Important
Fix Version/s: 6.7
Component/s: QML: Compiler
Labels:
- Reported_by_support_standard

Code

import QtQuick

Window {
    width: 640
    height: 480
    visible: true
    title: currentDate.getFullYear()

    readonly property date currentDate: new Date()
}

Compiler output

Warning: main.qml:7:24: Could not compile binding for title: Cannot generate efficient code for call to untyped JavaScript function [compiler]
    title: currentDate.getFullYear()
                       ^^^^^^^^^^^
Warning: main.qml:9:45: Could not compile binding for currentDate: Cannot generate efficient code for Construct [compiler]
    readonly property date currentDate: new Date()
                                            ^^^^