token usage

auth.module.js

const actions = {
    [AUTH_REQUEST]: ({commit, dispatch}, user) => {
        return new Promise((resolve, reject) => {
            commit(AUTH_REQUEST)
            axios({url: 'auth', data: user, method: 'POST' })
            .then(resp => {
                const token = resp.data.token
                localStorage.setItem('user-token', token)
                // Add the following line:
                axios.defaults.headers.common['Authorization'] = token
                commit(AUTH_SUCCESS, resp)
                dispatch(USER_REQUEST)
                resolve(resp)
            })
            .catch(err => {
                commit(AUTH_ERROR, err)
                localStorage.removeItem('user-token')
                reject(err)
            })
        })
    },
    [AUTH_LOGOUT]: ({commit, dispatch}) => {
        return new Promise((resolve, reject) => {
            commit(AUTH_LOGOUT)
            localStorage.removeItem('user-token')
            // remove the axios default header
            delete axios.defaults.headers.common['Authorization']
            resolve()
        })
    }
}