.js files cannot be imported to the qml document while it's possible in the big qt

// JSexperiment.qml
import QtQuick
import "myjs.js" as JS
Rectangle {
    Text {
        anchors.centerIn: parent
        text: "Qt for MCUs"
    }
    Component.onCompleted: {
        console.log("Qt for MCUs is ready!")
        JS.func()
    }
}

// myjs.js
function func() {
    console.log("form js")
}  

C:/Users/81808/Downloads/JSexperiment/JSexperiment.qml:2:1: error: path 'myjs.js' not found
import "myjs.js" as JS 

// Main.qml
import QtQuick
import QtQuick.Window
import "myjs.js" as JS
Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")
    Component.onCompleted: {
        console.log("Qt for MCUs is ready!")
        JS.func()
    }
}
 
// myjs.js
function func() {
    console.log("form js")
}