neptune-web-wallet/src/api/config/index.ts

import axios from 'axios'

axios.defaults.withCredentials = false

export const API_URL = import.meta.env.VITE_APP_API
const instance = axios.create({
    baseURL: API_URL,
    headers: {
        'Content-Type': 'application/json',
    },
})

export const setLocaleApi = (locale: string) => {
    instance.defaults.headers.common['lang'] = locale
}

export default instance