不明白的是，vue文档中写js代码为什么不能在vscode中立等运行，总是报错，而python代码就可以呢，这是什么原因，要怎么修改能运行呢？

const count = ref(0)
console.log(count.value) // 0

count.value++
console.log(count.value) // 1

报错

[Running] node "/Users/ivyone/564"
/Users/ivyone/564:1
const count = ref(0)
              ^

ReferenceError: ref is not defined
    at Object.<anonymous> (/Users/ivyone/564:1:15)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32)
    at Function.Module._load (internal/modules/cjs/loader.js:769:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
    at internal/main/run_main_module.js:17:47

[Done] exited with code=1 in 0.077 seconds