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  1. Qt
  2. QTBUG-123341

QML JavaScript function annotations not supported

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    Description

      The docs say:

      Function declarations in QML documents can, and should, contain type annotations.

      https://doc.qt.io/qt-6/qtqml-javascript-hostenvironment.html#type-annotations-and-assertions

      But QML using annotations fails to parse:

      import QtQuick
import QtWebEngine

WebEngineView {
    id: webView
    url: "https://www.qt.io"

    onAudioMutedChanged: function (muted: bool) {}
}

      $ qml /tmp/web.qml
QQmlApplicationEngine failed to load component
[file:///tmp/web.qml:8:41:] Type annotations are not permitted in function parameters in JavaScript functions
qml: Did not load any objects, exiting.

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            qtqmlteam Qt Qml Team User
            rectalogic Andrew Wason
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              Created:
              Updated:

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