实际上，我想知道在＃NUXT.JS中存储通用组件方法的位置。

我尝试过的东西。->将通用代码存储在中间件中（无用），因为据我所知，中间件仅能够处理对服务器的请求和响应。

methods: {

  // states methods.
  SwitchManager: function (__dataContainer, __key, __value) {
    // stand alone debugger for this module.
    let debug = __debug('computed:_3levelSwitch')
    // debug showing function loaded.
    debug('(h1:sizeCheck) creating switch..')
    // switch.
    switch (__key) {
      // fake allow set value to true of given key
      default:
        this[__dataContainer][__key][__value] = true
        break
    }
    return this[__dataContainer][__key][__value]
  },
  SizeCheck: function (__size) {
    // stand alone debugger for this module.
    let debug = __debug('tags:p')
    // debug showing function loaded.
    debug('(p:sizeCheck) checking..')
    // init switch.
    this.SwitchManager('pill', 'size', __size)
  },
  StateCheck: function (__state) {
    // stand alone debugger for this module.
    let debug = __debug('tags:h1')
    // debug showing function loaded.
    debug('(h1:sizeCheck) checking..')
    // init switch.
    this.SwitchManager('pill', 'state', __state)
  }
},
created () {
  // h1 tag size check
  this.SizeCheck(this.size)
  this.StateCheck(this.state)
}