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node_modules/vue-router/src/install.js

@@ -0,0 +1,52 @@
+import View from './components/view'
+import Link from './components/link'
+
+export let _Vue
+
+export function install (Vue) {
+  if (install.installed && _Vue === Vue) return
+  install.installed = true
+
+  _Vue = Vue
+
+  const isDef = v => v !== undefined
+
+  const registerInstance = (vm, callVal) => {
+    let i = vm.$options._parentVnode
+    if (isDef(i) && isDef(i = i.data) && isDef(i = i.registerRouteInstance)) {
+      i(vm, callVal)
+    }
+  }
+
+  Vue.mixin({
+    beforeCreate () {
+      if (isDef(this.$options.router)) {
+        this._routerRoot = this
+        this._router = this.$options.router
+        this._router.init(this)
+        Vue.util.defineReactive(this, '_route', this._router.history.current)
+      } else {
+        this._routerRoot = (this.$parent && this.$parent._routerRoot) || this
+      }
+      registerInstance(this, this)
+    },
+    destroyed () {
+      registerInstance(this)
+    }
+  })
+
+  Object.defineProperty(Vue.prototype, '$router', {
+    get () { return this._routerRoot._router }
+  })
+
+  Object.defineProperty(Vue.prototype, '$route', {
+    get () { return this._routerRoot._route }
+  })
+
+  Vue.component('RouterView', View)
+  Vue.component('RouterLink', Link)
+
+  const strats = Vue.config.optionMergeStrategies
+  // use the same hook merging strategy for route hooks
+  strats.beforeRouteEnter = strats.beforeRouteLeave = strats.beforeRouteUpdate = strats.created
+}