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  * (c) 2020 Evan You
  * @license MIT
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e=document.querySelector("base");t=(t=e&&e.getAttribute("href")||"/").replace(/^https?:\/\/[^\/]+/,"")}else t="/";"/"!==t.charAt(0)&&(t="/"+t);return t.replace(/\/$/,"")}(e),this.current=p,this.pending=null,this.ready=!1,this.readyCbs=[],this.readyErrorCbs=[],this.errorCbs=[],this.listeners=[]}listen(t){this.cb=t}onReady(t,e){this.ready?t():(this.readyCbs.push(t),e&&this.readyErrorCbs.push(e))}onError(t){this.errorCbs.push(t)}transitionTo(t,e,n){let r;try{r=this.router.match(t,this.current)}catch(t){throw this.errorCbs.forEach(e=>{e(t)}),t}const o=this.current;this.confirmTransition(r,()=>{this.updateRoute(r),e&&e(r),this.ensureURL(),this.router.afterHooks.forEach(t=>{t&&t(r,o)}),this.ready||(this.ready=!0,this.readyCbs.forEach(t=>{t(r)}))},t=>{n&&n(t),t&&!this.ready&&(Rt(t,gt.redirected)&&o===p||(this.ready=!0,this.readyErrorCbs.forEach(e=>{e(t)})))})}confirmTransition(t,e,n){const r=this.current;this.pending=t;const o=t=>{!Rt(t)&&kt(t)&&(this.errorCbs.length?this.errorCbs.forEach(e=>{e(t)}):console.error(t)),n&&n(t)},i=t.matched.length-1,s=r.matched.length-1;if(y(t,r)&&i===s&&t.matched[i]===r.matched[s])return this.ensureURL(),o(function(t,e){const n=vt(t,e,gt.duplicated,`Avoided redundant navigation to current location: "${t.fullPath}".`);return n.name="NavigationDuplicated",n}(r,t));const{updated:a,deactivated:c,activated:u}=function(t,e){let n;const r=Math.max(t.length,e.length);for(n=0;n<r&&t[n]===e[n];n++);return{updated:e.slice(0,n),activated:e.slice(n),deactivated:t.slice(n)}}(this.current.matched,t.matched),h=[].concat(function(t){return jt(t,"beforeRouteLeave",Lt,!0)}(c),this.router.beforeHooks,function(t){return jt(t,"beforeRouteUpdate",Lt)}(a),u.map(t=>t.beforeEnter),Et(u)),l=(e,n)=>{if(this.pending!==t)return o(bt(r,t));try{e(t,r,e=>{!1===e?(this.ensureURL(!0),o(function(t,e){return vt(t,e,gt.aborted,`Navigation aborted from "${t.fullPath}" to "${e.fullPath}" via a navigation guard.`)}(r,t))):kt(e)?(this.ensureURL(!0),o(e)):"string"==typeof e||"object"==typeof e&&("string"==typeof e.path||"string"==typeof e.name)?(o(wt(r,t)),"object"==typeof e&&e.replace?this.replace(e):this.push(e)):n(e)})}catch(t){o(t)}};mt(h,l,()=>{mt(function(t){return jt(t,"beforeRouteEnter",(t,e,n,r)=>(function(t,e,n){return function(r,o,i){return t(r,o,t=>{"function"==typeof t&&(e.enteredCbs[n]||(e.enteredCbs[n]=[]),e.enteredCbs[n].push(t)),i(t)})}})(t,n,r))}(u).concat(this.router.resolveHooks),l,()=>{if(this.pending!==t)return o(bt(r,t));this.pending=null,e(t),this.router.app&&this.router.app.$nextTick(()=>{g(t)})})})}updateRoute(t){this.current=t,this.cb&&this.cb(t)}setupListeners(){}teardown(){this.listeners.forEach(t=>{t()}),this.listeners=[],this.current=p,this.pending=null}}function jt(t,e,n,r){const o=$t(t,(t,r,o,i)=>{const s=function(t,e){"function"!=typeof t&&(t=K.extend(t));return t.options[e]}(t,e);if(s)return Array.isArray(s)?s.map(t=>n(t,r,o,i)):n(s,r,o,i)});return Ct(r?o.reverse():o)}function Lt(t,e){if(e)return function(){return t.apply(e,arguments)}}class Pt extends St{constructor(t,e){super(t,e),this._startLocation=Tt(this.base)}setupListeners(){if(this.listeners.length>0)return;const t=this.router,e=t.options.scrollBehavior,n=ft&&e;n&&this.listeners.push(ot());const r=()=>{const e=this.current,r=Tt(this.base);this.current===p&&r===this._startLocation||this.transitionTo(r,r=>{n&&it(t,r,e,!0)})};window.addEventListener("popstate",r),this.listeners.push(()=>{window.removeEventListener("popstate",r)})}go(t){window.history.go(t)}push(t,e,n){const{current:r}=this;this.transitionTo(t,t=>{dt(x(this.base+t.fullPath)),it(this.router,t,r,!1),e&&e(t)},n)}replace(t,e,n){const{current:r}=this;this.transitionTo(t,t=>{yt(x(this.base+t.fullPath)),it(this.router,t,r,!1),e&&e(t)},n)}ensureURL(t){if(Tt(this.base)!==this.current.fullPath){const e=x(this.base+this.current.fullPath);t?dt(e):yt(e)}}getCurrentLocation(){return Tt(this.base)}}function Tt(t){let e=window.location.pathname;return t&&0===e.toLowerCase().indexOf(t.toLowerCase())&&(e=e.slice(t.length)),(e||"/")+window.location.search+window.location.hash}class _t extends St{constructor(t,e,n){super(t,e),n&&function(t){const e=Tt(t);if(!/^\/#/.test(e))return window.location.replace(x(t+"/#"+e)),!0}(this.base)||qt()}setupListeners(){if(this.listeners.length>0)return;const t=this.router.options.scrollBehavior,e=ft&&t;e&&this.listeners.push(ot());const n=()=>{const t=this.current;qt()&&this.transitionTo(Ut(),n=>{e&&it(this.router,n,t,!0),ft||Vt(n.fullPath)})},r=ft?"popstate":"hashchange";window.addEventListener(r,n),this.listeners.push(()=>{window.removeEventListener(r,n)})}push(t,e,n){const{current:r}=this;this.transitionTo(t,t=>{Mt(t.fullPath),it(this.router,t,r,!1),e&&e(t)},n)}replace(t,e,n){const{current:r}=this;this.transitionTo(t,t=>{Vt(t.fullPath),it(this.router,t,r,!1),e&&e(t)},n)}go(t){window.history.go(t)}ensureURL(t){const e=this.current.fullPath;Ut()!==e&&(t?Mt(e):Vt(e))}getCurrentLocation(){return Ut()}}function qt(){const t=Ut();return"/"===t.charAt(0)||(Vt("/"+t),!1)}function Ut(){let t=window.location.href;const e=t.indexOf("#");return e<0?"":t=t.slice(e+1)}function It(t){const e=window.location.href,n=e.indexOf("#");return`${n>=0?e.slice(0,n):e}#${t}`}function Mt(t){ft?dt(It(t)):window.location.hash=t}function Vt(t){ft?yt(It(t)):window.location.replace(It(t))}class Bt extends St{constructor(t,e){super(t,e),this.stack=[],this.index=-1}push(t,e,n){this.transitionTo(t,t=>{this.stack=this.stack.slice(0,this.index+1).concat(t),this.index++,e&&e(t)},n)}replace(t,e,n){this.transitionTo(t,t=>{this.stack=this.stack.slice(0,this.index).concat(t),e&&e(t)},n)}go(t){const e=this.index+t;if(e<0||e>=this.stack.length)return;const n=this.stack[e];this.confirmTransition(n,()=>{const t=this.current;this.index=e,this.updateRoute(n),this.router.afterHooks.forEach(e=>{e&&e(n,t)})},t=>{Rt(t,gt.duplicated)&&(this.index=e)})}getCurrentLocation(){const t=this.stack[this.stack.length-1];return t?t.fullPath:"/"}ensureURL(){}}class Ht{constructor(t={}){this.app=null,this.apps=[],this.options=t,this.beforeHooks=[],this.resolveHooks=[],this.afterHooks=[],this.matcher=Y(t.routes||[],this);let e=t.mode||"hash";switch(this.fallback="history"===e&&!ft&&!1!==t.fallback,this.fallback&&(e="hash"),J||(e="abstract"),this.mode=e,e){case"history":this.history=new Pt(this,t.base);break;case"hash":this.history=new _t(this,t.base,this.fallback);break;case"abstract":this.history=new Bt(this,t.base)}}match(t,e,n){return this.matcher.match(t,e,n)}get currentRoute(){return this.history&&this.history.current}init(t){if(this.apps.push(t),t.$once("hook:destroyed",()=>{const e=this.apps.indexOf(t);e>-1&&this.apps.splice(e,1),this.app===t&&(this.app=this.apps[0]||null),this.app||this.history.teardown()}),this.app)return;this.app=t;const e=this.history;if(e instanceof Pt||e instanceof _t){const t=t=>{const n=e.current,r=this.options.scrollBehavior;ft&&r&&"fullPath"in t&&it(this,t,n,!1)},n=n=>{e.setupListeners(),t(n)};e.transitionTo(e.getCurrentLocation(),n,n)}e.listen(t=>{this.apps.forEach(e=>{e._route=t})})}beforeEach(t){return Ft(this.beforeHooks,t)}beforeResolve(t){return Ft(this.resolveHooks,t)}afterEach(t){return Ft(this.afterHooks,t)}onReady(t,e){this.history.onReady(t,e)}onError(t){this.history.onError(t)}push(t,e,n){if(!e&&!n&&"undefined"!=typeof Promise)return new Promise((e,n)=>{this.history.push(t,e,n)});this.history.push(t,e,n)}replace(t,e,n){if(!e&&!n&&"undefined"!=typeof Promise)return new Promise((e,n)=>{this.history.replace(t,e,n)});this.history.replace(t,e,n)}go(t){this.history.go(t)}back(){this.go(-1)}forward(){this.go(1)}getMatchedComponents(t){const e=t?t.matched?t:this.resolve(t).route:this.currentRoute;return e?[].concat.apply([],e.matched.map(t=>Object.keys(t.components).map(e=>t.components[e]))):[]}resolve(t,e,n){const r=B(t,e=e||this.history.current,n,this),o=this.match(r,e),i=o.redirectedFrom||o.fullPath;return{location:r,route:o,href:function(t,e,n){var r="hash"===n?"#"+e:e;return t?x(t+"/"+r):r}(this.history.base,i,this.mode),normalizedTo:r,resolved:o}}addRoutes(t){this.matcher.addRoutes(t),this.history.current!==p&&this.history.transitionTo(this.history.getCurrentLocation())}}function Ft(t,e){return t.push(e),()=>{const n=t.indexOf(e);n>-1&&t.splice(n,1)}}Ht.install=function t(e){if(t.installed&&K===e)return;t.installed=!0,K=e;const n=t=>void 0!==t,r=(t,e)=>{let r=t.$options._parentVnode;n(r)&&n(r=r.data)&&n(r=r.registerRouteInstance)&&r(t,e)};e.mixin({beforeCreate(){n(this.$options.router)?(this._routerRoot=this,this._router=this.$options.router,this._router.init(this),e.util.defineReactive(this,"_route",this._router.history.current)):this._routerRoot=this.$parent&&this.$parent._routerRoot||this,r(this,this)},destroyed(){r(this)}}),Object.defineProperty(e.prototype,"$router",{get(){return this._routerRoot._router}}),Object.defineProperty(e.prototype,"$route",{get(){return this._routerRoot._route}}),e.component("RouterView",w),e.component("RouterLink",z);const o=e.config.optionMergeStrategies;o.beforeRouteEnter=o.beforeRouteLeave=o.beforeRouteUpdate=o.created},Ht.version="3.4.6",Ht.isNavigationFailure=Rt,Ht.NavigationFailureType=gt,J&&window.Vue&&window.Vue.use(Ht);export default Ht;