uniapp 3.x版本+ts+vite,全局挂载属性和方法,使用报is not defined

main.ts中注册

import { createSSRApp } from "vue";  
import App from "./App.vue";  
//@ts-ignore  
import GlobalMessage from "@/componets/GlobalMessage/GlobalMessage.js";  
function registerGlobal(app) {  
    app.config.globalProperties.$myMethod = function () {  
        console.log('This is my method.')  
    }  
    app.use(GlobalMessage);  
    console.error("全局", app)  
}  

export function createApp() {  
    const app = createSSRApp(App);  
    registerGlobal(app);  
    return {  
        app,  
    };  
}

使用

        console.log("myMethod()", $myMethod())

报错

$myMethod is not defined