TypeError: e is not a function - vue.js

Question

Good day.
When running my app i get the following error related to my vue-router:
TypeError: e is not a function
however i have nothing ... i simply named "e" in my code.
I have a few before each options but nothing too big besides a few cookies deletions.
I have a few imports of apps and i am trying to use them in my router and they all work. So does the cookies. I did the beforeEach() method a few times to see if the error was there but so far no luck.
i got no idea of what is going on.
EDIT: When trying to figure this i was comenting on my code to see if i could find the error and when i removed most of the beforeEach() section i left on the next() function and a new error showed sayin "t is not a function", so i guess for some reason java script is only recognizing the last letters of my funcions, like t in next() and e in some().
EDIT2: After removing unecessary code that i copied from another project apperently the error happens in my next() function.
here's my router code:
import Vue from "vue";
import Router from "vue-router";
import Dashboard from "#/views/Dashboard.vue";
import Opcoes from "#/views/settings.vue";
import LoginForm from "#/components/component/loginForm.vue";
import store from "./store.js";
import Cookies from "js-cookie";
Vue.use(Router);
let router = new Router({
mode: "history",
base: process.env.BASE_URL,
routes: [
{
path: "/",
name: "loginForm",
component: LoginForm,
meta: {
guest: true
}
},
{
path: "/dashboard",
name: "Dashboard",
component: Dashboard,
meta: {
requiresAuth: true
}
},
{
path: "/opcoes",
name: "Opcoes",
component: Opcoes,
meta: {
requiresAuth: true
}
},
{
path: "/sair",
name: "Sair",
component: LoginForm,
meta: {
requiresAuth: true
}
}
]
});
router.beforeEach((to, from, next) => {
const expirationDate = Cookies.get("expireIn");
const now = new Date().getTime();
if (now >= expirationDate) {
Cookies.remove("expirationDate");
Cookies.remove("token");
Cookies.remove("userId");
store.dispatch('LOGOUT');
} else {
next();
}
});
export default router;
Heres a print of my stack trace:

Answer 1

My Big Fat Guess
The error message points to line 2203 (line 1921 is part of a generic error handler). This line is in the Router push() method
onComplete && onComplete(route);
My guess is, somewhere in your code not shown in your question (perhaps in your LoginForm component), you are calling this.$router.push() with a second argument that is not a function, eg
this.$router.push({ name: 'Dashboard' }, somethingNotAFunction)
Other problems (from previous versions of the question)
Your / route (loginForm) has no params so this...
next({
path: "/",
params: { nextUrl: to.fullPath }
});
is invalid. Did you perhaps mean to send nextUrl as a query parameter. If so, use
next({ name: 'loginForm', query: { nextUrl: to.fullPath } })
You also have
next({ path: "login" });
and
next({ name: "login" });
neither of which exist in your routes. You should only forward the route request to existing routes.
Finally, if you're using Vuex, you should not be directly assigning state values. In strict-mode, this
store.state.isLoggedIn = false
will trigger an error. You should be committing state mutations instead.