The question has already been posted, including one 9 years ago, but my case is simpler: The code in my Vue.js version 2 app starts with

console.log('Starting at ', Date.now())
import Vue from 'vue'
...

This produces 2 log lines:

Starting at 1656842448690 ... VM983 main.js:21

and

Starting at 1656842449156 ... main.js:21

So about half a second difference.

Is my code running 2 times, must I care about this?