axios-helpers.js

// Axios.prototype cannot be modified
const axiosExtra = {
  setBaseURL (baseURL) {
    this.defaults.baseURL = baseURL
  },
  setHeader (name, value, scopes = 'common') {
    for (let scope of Array.isArray(scopes) ? scopes : [ scopes ]) {
      if (!value) {
        delete this.defaults.headers[scope][name];
        return
      }
      this.defaults.headers[scope][name] = value
    }
  },
  setToken (token, type, scopes = 'common') {
    const value = !token ? null : (type ? type + ' ' : '') + token
    this.setHeader('Authorization', value, scopes)
  },
  onRequest(fn) {
    this.interceptors.request.use(config => fn(config) || config)
  },
  onResponse(fn) {
    this.interceptors.response.use(response => fn(response) || response)
  },
  onRequestError(fn) {
    this.interceptors.request.use(undefined, error => fn(error) || Promise.reject(error))
  },
  onResponseError(fn) {
    this.interceptors.response.use(undefined, error => fn(error) || Promise.reject(error))
  },
  onError(fn) {
    this.onRequestError(fn)
    this.onResponseError(fn)
  }
}