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node_modules/vue-lazyload/src/index.js

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+import Lazy from './lazy'
+import LazyComponent from './lazy-component'
+import LazyContainer from './lazy-container'
+import { assign } from './util'
+
+export default {
+  /*
+  * install function
+  * @param  {Vue} Vue
+  * @param  {object} options  lazyload options
+  */
+  install (Vue, options = {}) {
+    const LazyClass = Lazy(Vue)
+    const lazy = new LazyClass(options)
+    const lazyContainer = new LazyContainer({ lazy })
+
+    const isVue2 = Vue.version.split('.')[0] === '2'
+
+    Vue.prototype.$Lazyload = lazy
+
+    if (options.lazyComponent) {
+      Vue.component('lazy-component', LazyComponent(lazy))
+    }
+
+    if (isVue2) {
+      Vue.directive('lazy', {
+        bind: lazy.add.bind(lazy),
+        update: lazy.update.bind(lazy),
+        componentUpdated: lazy.lazyLoadHandler.bind(lazy),
+        unbind: lazy.remove.bind(lazy)
+      })
+      Vue.directive('lazy-container', {
+        bind: lazyContainer.bind.bind(lazyContainer),
+        update: lazyContainer.update.bind(lazyContainer),
+        unbind: lazyContainer.unbind.bind(lazyContainer)
+      })
+    } else {
+      Vue.directive('lazy', {
+        bind: lazy.lazyLoadHandler.bind(lazy),
+        update (newValue, oldValue) {
+          assign(this.vm.$refs, this.vm.$els)
+          lazy.add(this.el, {
+            modifiers: this.modifiers || {},
+            arg: this.arg,
+            value: newValue,
+            oldValue: oldValue
+          }, {
+            context: this.vm
+          })
+        },
+        unbind () {
+          lazy.remove(this.el)
+        }
+      })
+
+      Vue.directive('lazy-container', {
+        update (newValue, oldValue) {
+          lazyContainer.update(this.el, {
+            modifiers: this.modifiers || {},
+            arg: this.arg,
+            value: newValue,
+            oldValue: oldValue
+          }, {
+            context: this.vm
+          })
+        },
+        unbind () {
+          lazyContainer.unbind(this.el)
+        }
+      })
+    }
+  }
+}