How to use global variable

[akbarism]

so i use dayjs on my vue project, and declare it as a global variable
this is my configuration :

on dayjs.js :
import dayjs from "dayjs";
export const dayConfig = (app) => { app.provide("day", dayjs); };

on main,js :

import { dayConfig } from "./plugins/Dayjs";
dayConfig(app);

in component.vue I use it like this :

import { inject } from "vue";
const day = inject("day");
const date = day().format('YYYY-MM-DD')
if I use that method in store.js it will display a warning:
inject() can only be used inside setup() or functional components.

[posva]

Just import dayjs (everywhere). You don’t need to provide that kind of variables