RuoYi-Vue/ruoyi-ui/src/plugins/index.js

import cache from './cache'
import modal from './modal'
import download from './download'

export default {
  install(Vue) {
    // 缓存对象
    Vue.prototype.$cache = cache
    // 模态框对象
    Vue.prototype.$modal = modal
    // 下载文件
    Vue.prototype.$download = download
  }
}