qmlformat removes initialisation in if statements if not covered by a variable definitions:

import QtQuick 2.15

Item {
  function test() {
  let i = 0;
  for(i = 1; i < 10; i++) {
  }
  }
  }

is formatted to

import QtQuick 2.15

Item {
    function test() {
        let i = 0;
        for (; i < 10; i++) {
        }
    }

}

Note the missing `i = 1` in the for loop. If I remove the `let` state and write `let i = 1` in the for loop, everything is okay.