Duplicated name

This warning category is spelled [duplicated-name] by qmllint.

Duplicated Property Name

Multiple properties in the same QML component scope have the same name.

Components with duplicate property names will not be created at runtime: they will be null instead.

import QtQuick
Item {
    property int helloWorld
    property int helloWorld
}

To fix this warning, remove the duplicate property or rename it:

import QtQuick
Item {
    property int helloWorld
}

Multiple signals in the same QML component scope have the same name.

Components with duplicate signal names will not be created at runtime: they will be null instead.

import QtQuick
Rectangle {
    signal helloWorld
    signal helloWorld
}

To fix this warning, remove the duplicate signal or rename it:

import QtQuick
Rectangle {
    signal helloWorld
}