Why my authentificationService is undefined?

I've one question. I don't understand why, but my services is undefined. Someone could help me to clarify this ?

I've a component "FormLogin" with the call of this service

<script>
import { authenticationService } from '@/container.js'
import { ref } from '@vue/reactivity'

export default {
    emits: ['successfullyLogged'],
    setup (props, context) {
        const errors = ref([])
        const email = ref(null)
        const password = ref(null)

        const submit = () => {
            errors.value = []

            authenticationService()
                .login(email.value, password.value)
                .then(() => {
                    context.emit('successfullyLogged')
                })
                .catch(error => {
                    errors.value = [error.response.data.message]
                })
        }

        return {
            email,
            password,
            errors,
            submit
        }
    }
}
</script>

Then i've the "global injection"

import api from '@/clients/api.js'
import TokenRepository from '@/repositories/TokenRepository.js'
import AuthenticationService from '@/services/AuthenticationService.js'

export function tokenRepository () {
    return new TokenRepository()
}

export function authenticationService () {
    return new AuthenticationService(api, tokenRepository)
}

And after that, the service itself

import store from "@/store"

export default (client, tokenRepository) => {
    const login = (email, password) => {
        return client.post('/oauth/token', {
                grant_type: 'password',
                client_id: process.env.VUE_APP_CLIENT_ID,
                client_secret: process.env.VUE_APP_CLIENT_SECRET,
                username: email,
                password: password
            })
            .then(response => {
                tokenRepository().store(response.data.access_token)
                store.dispatch('account/loadUser')
            })
    }
    
    const logout = () => {
        tokenRepository().destroy()
        store.commit('account/setUser', {})
    }
    
    return {
        login,
        logout
    }
}

But when i run this code, fill my form fields and hit the button "submit", i've this error in console, and i don't undestand why. (And when i try to use the debugger, it appear that authenticationService in FormLogin is undefined.

Thanks in advance for your help, Christophe

Solution

So the answer of the problem was to remove the word "new" in my container.js

Bad answer for me

export function authenticationService () {
    return new AuthenticationService(api, tokenRepository)
}

Good answer for me

export function authenticationService () {
    return AuthenticationService(api, tokenRepository)
}