Vue config from https://medium.com/dzangolab/vue-js-environment-variables-799fc080d736

config.js

# config.js
const config = {
  ...,
  features: {
    ...
  }.
  ...
}
function feature (name) {
  return config.features[name]
}
function parse (value, fallback) {
  if (typeof value === 'undefined') {
    return fallback
  }
  switch (typeof fallback) {
    case 'boolean' :
      return !!JSON.parse(value)
    case 'number' :
      return JSON.parse(value)
    default :
      return value
  }
}
export {
  config
}
export default {
  install (Vue) {
    Vue.appConfig = config
    Vue.feature = feature
    Vue.prototype.$appConfig = config
    Vue.prototype.$feature = feature
  }
}