[Vue warn]: onMounted is called when there is no active component instance to be associated with. Lifecycle injection APIs can only be used during execution of setup(). If you are using async setup(), make sure to register lifecycle hooks before the first await statement. warn$1 @ VM32:3

[maxiaoma12]

Hi,the onMounted is not work in .vue files.
The error message like this:
[Vue warn]: onMounted is called when there is no active component instance to be associated with. Lifecycle injection APIs can only be used during execution of setup(). If you are using async setup(), make sure to register lifecycle hooks before the first await statement. warn$1 @ VM32:3

How can I use onMounted or getCurrentInstance in .vue files.

<script setup>
    import { onMounted, getCurrentInstance } from "../js/Vue/vue.esm-browser.js";
    onMounted(() => {
        let Lang = getCurrentInstance()?.appContext.config.globalProperties.$Lang;
        console.log(Lang)
    });
</script>

If I use getCurrentInstance like this,it's return null;

<script  type="module">
    import { onMounted, getCurrentInstance } from "../js/Vue/vue.esm-browser.js"; 
    export default {
        props: ["obj" ],
            data() {
                return {
                    msg: 'world!',
                    color: 'red',
                }
        },
    setup() { 
        // onMounted(() => {
             let Lang = getCurrentInstance()?.appContext.config.globalProperties.$Lang;
             console.log(Lang)
        // });
            return { };
    
        } 
    }
    
</script>

[FranckFreiburger]

Hi,
../js/Vue/vue.esm-browser.js is not the right module to import.
Try to use import { onMounted, getCurrentInstance } from "vue";