Axios-wrapped global API service with JWT authentication and base URL environment variable

api.js

// api.js
import axios from 'axios'

const API_URL = process.env.API_URL
const AUTH_TOKEN = ... // from local storage, session etc.

const api = axios.create({
  baseURL: API_URL,
  headers: { 'Authorization': 'JWT ' + AUTH_TOKEN  }
})

export default api