import Vue from "vue"; import VueLazyload, { VueLazyloadOptions } from "../index"; Vue.use(VueLazyload); Vue.use(VueLazyload, { preLoad: 0, }); const vm = new Vue({}); vm.$Lazyload.lazyLoadHandler(); vm.$Lazyload.$on('loading', function (state, cache) { const err: string = state.error; const el: Element = state.el; const bol: boolean = cache; });