Function used before its declaration

This warning category is spelled [function-used-before-declaration] by qmllint.

This category is disabled by default.

Function usage before its declaration

You called a function or used its name before the function was declared.

It makes the code more difficult to read and may cause confusion.

Note that the function is made available before its declaration due to hoisting.

 import QtQuick

 Item {
     function f() {
         g(42)
         function g() { return 42; }
     }
 }

To fix this warning, move the declaration before the usage.

 import QtQuick

 Item {
     function f() {
         function g() { return 42; }
         g(42)
     }
 }