"use strict";function _interopDefault(n){return n&&"object"==typeof n&&"default"in n?n.default:n}Object.defineProperty(exports,"__esModule",{value:!0});var resolvePathname=_interopDefault(require("resolve-pathname")),valueEqual=_interopDefault(require("value-equal"));require("tiny-warning");var invariant=_interopDefault(require("tiny-invariant"));function _extends(){return(_extends=Object.assign||function(n){for(var t=1;t<arguments.length;t++){var e=arguments[t];for(var a in e)Object.prototype.hasOwnProperty.call(e,a)&&(n[a]=e[a])}return n}).apply(this,arguments)}function addLeadingSlash(n){return"/"===n.charAt(0)?n:"/"+n}function stripLeadingSlash(n){return"/"===n.charAt(0)?n.substr(1):n}function hasBasename(n,t){return new RegExp("^"+t+"(\\/|\\?|#|$)","i").test(n)}function stripBasename(n,t){return hasBasename(n,t)?n.substr(t.length):n}function stripTrailingSlash(n){return"/"===n.charAt(n.length-1)?n.slice(0,-1):n}function parsePath(n){var t=n||"/",e="",a="",o=t.indexOf("#");-1!==o&&(a=t.substr(o),t=t.substr(0,o));var r=t.indexOf("?");return-1!==r&&(e=t.substr(r),t=t.substr(0,r)),{pathname:t,search:"?"===e?"":e,hash:"#"===a?"":a}}function createPath(n){var t=n.pathname,e=n.search,a=n.hash,o=t||"/";return e&&"?"!==e&&(o+="?"===e.charAt(0)?e:"?"+e),a&&"#"!==a&&(o+="#"===a.charAt(0)?a:"#"+a),o}function createLocation(n,t,e,a){var o;"string"==typeof n?(o=parsePath(n)).state=t:(void 0===(o=_extends({},n)).pathname&&(o.pathname=""),o.search?"?"!==o.search.charAt(0)&&(o.search="?"+o.search):o.search="",o.hash?"#"!==o.hash.charAt(0)&&(o.hash="#"+o.hash):o.hash="",void 0!==t&&void 0===o.state&&(o.state=t));try{o.pathname=decodeURI(o.pathname)}catch(n){throw n instanceof URIError?new URIError('Pathname "'+o.pathname+'" could not be decoded. This is likely caused by an invalid percent-encoding.'):n}return e&&(o.key=e),a?o.pathname?"/"!==o.pathname.charAt(0)&&(o.pathname=resolvePathname(o.pathname,a.pathname)):o.pathname=a.pathname:o.pathname||(o.pathname="/"),o}function locationsAreEqual(n,t){return n.pathname===t.pathname&&n.search===t.search&&n.hash===t.hash&&n.key===t.key&&valueEqual(n.state,t.state)}function createTransitionManager(){var r=null;var a=[];return{setPrompt:function(n){return r=n,function(){r===n&&(r=null)}},confirmTransitionTo:function(n,t,e,a){if(null!=r){var o="function"==typeof r?r(n,t):r;"string"==typeof o?"function"==typeof e?e(o,a):a(!0):a(!1!==o)}else a(!0)},appendListener:function(n){var t=!0;function e(){t&&n.apply(void 0,arguments)}return a.push(e),function(){t=!1,a=a.filter(function(n){return n!==e})}},notifyListeners:function(){for(var n=arguments.length,t=new Array(n),e=0;e<n;e++)t[e]=arguments[e];a.forEach(function(n){return n.apply(void 0,t)})}}}var canUseDOM=!("undefined"==typeof window||!window.document||!window.document.createElement);function getConfirmation(n,t){t(window.confirm(n))}function supportsHistory(){var n=window.navigator.userAgent;return(-1===n.indexOf("Android 2.")&&-1===n.indexOf("Android 4.0")||-1===n.indexOf("Mobile Safari")||-1!==n.indexOf("Chrome")||-1!==n.indexOf("Windows Phone"))&&(window.history&&"pushState"in window.history)}function supportsPopStateOnHashChange(){return-1===window.navigator.userAgent.indexOf("Trident")}function supportsGoWithoutReloadUsingHash(){return-1===window.navigator.userAgent.indexOf("Firefox")}function isExtraneousPopstateEvent(n){void 0===n.state&&navigator.userAgent.indexOf("CriOS")}var PopStateEvent="popstate",HashChangeEvent="hashchange";function getHistoryState(){try{return window.history.state||{}}catch(n){return{}}}function createBrowserHistory(n){void 0===n&&(n={}),canUseDOM||invariant(!1);var c=window.history,s=supportsHistory(),t=!supportsPopStateOnHashChange(),e=n,a=e.forceRefresh,h=void 0!==a&&a,o=e.getUserConfirmation,u=void 0===o?getConfirmation:o,r=e.keyLength,i=void 0===r?6:r,f=n.basename?stripTrailingSlash(addLeadingSlash(n.basename)):"";function l(n){var t=n||{},e=t.key,a=t.state,o=window.location,r=o.pathname+o.search+o.hash;return f&&(r=stripBasename(r,f)),createLocation(r,a,e)}function d(){return Math.random().toString(36).substr(2,i)}var v=createTransitionManager();function p(n){_extends(T,n),T.length=c.length,v.notifyListeners(T.location,T.action)}function g(n){isExtraneousPopstateEvent(n)||w(l(n.state))}function P(){w(l(getHistoryState()))}var m=!1;function w(t){if(m)m=!1,p();else{v.confirmTransitionTo(t,"POP",u,function(n){n?p({action:"POP",location:t}):function(n){var t=T.location,e=H.indexOf(t.key);-1===e&&(e=0);var a=H.indexOf(n.key);-1===a&&(a=0);var o=e-a;o&&(m=!0,L(o))}(t)})}}var y=l(getHistoryState()),H=[y.key];function x(n){return f+createPath(n)}function L(n){c.go(n)}var O=0;function E(n){1===(O+=n)&&1===n?(window.addEventListener(PopStateEvent,g),t&&window.addEventListener(HashChangeEvent,P)):0===O&&(window.removeEventListener(PopStateEvent,g),t&&window.removeEventListener(HashChangeEvent,P))}var S=!1;var T={length:c.length,action:"POP",location:y,createHref:x,push:function(n,t){var i=createLocation(n,t,d(),T.location);v.confirmTransitionTo(i,"PUSH",u,function(n){if(n){var t=x(i),e=i.key,a=i.state;if(s)if(c.pushState({key:e,state:a},null,t),h)window.location.href=t;else{var o=H.indexOf(T.location.key),r=H.slice(0,-1===o?0:o+1);r.push(i.key),H=r,p({action:"PUSH",location:i})}else window.location.href=t}})},replace:function(n,t){var r="REPLACE",i=createLocation(n,t,d(),T.location);v.confirmTransitionTo(i,r,u,function(n){if(n){var t=x(i),e=i.key,a=i.state;if(s)if(c.replaceState({key:e,state:a},null,t),h)window.location.replace(t);else{var o=H.indexOf(T.location.key);-1!==o&&(H[o]=i.key),p({action:r,location:i})}else window.location.replace(t)}})},go:L,goBack:function(){L(-1)},goForward:function(){L(1)},block:function(n){void 0===n&&(n=!1);var t=v.setPrompt(n);return S||(E(1),S=!0),function(){return S&&(S=!1,E(-1)),t()}},listen:function(n){var t=v.appendListener(n);return E(1),function(){E(-1),t()}}};return T}var HashChangeEvent$1="hashchange",HashPathCoders={hashbang:{encodePath:function(n){return"!"===n.charAt(0)?n:"!/"+stripLeadingSlash(n)},decodePath:function(n){return"!"===n.charAt(0)?n.substr(1):n}},noslash:{encodePath:stripLeadingSlash,decodePath:addLeadingSlash},slash:{encodePath:addLeadingSlash,decodePath:addLeadingSlash}};function getHashPath(){var n=window.location.href,t=n.indexOf("#");return-1===t?"":n.substring(t+1)}function pushHashPath(n){window.location.hash=n}function replaceHashPath(n){var t=window.location.href.indexOf("#");window.location.replace(window.location.href.slice(0,0<=t?t:0)+"#"+n)}function createHashHistory(n){void 0===n&&(n={}),canUseDOM||invariant(!1);var t=window.history,e=(supportsGoWithoutReloadUsingHash(),n),a=e.getUserConfirmation,i=void 0===a?getConfirmation:a,o=e.hashType,r=void 0===o?"slash":o,c=n.basename?stripTrailingSlash(addLeadingSlash(n.basename)):"",s=HashPathCoders[r],h=s.encodePath,u=s.decodePath;function f(){var n=u(getHashPath());return c&&(n=stripBasename(n,c)),createLocation(n)}var l=createTransitionManager();function d(n){_extends(E,n),E.length=t.length,l.notifyListeners(E.location,E.action)}var v=!1,p=null;function g(){var n=getHashPath(),t=h(n);if(n!==t)replaceHashPath(t);else{var e=f(),a=E.location;if(!v&&locationsAreEqual(a,e))return;if(p===createPath(e))return;p=null,function(t){if(v)v=!1,d();else{l.confirmTransitionTo(t,"POP",i,function(n){n?d({action:"POP",location:t}):function(n){var t=E.location,e=y.lastIndexOf(createPath(t));-1===e&&(e=0);var a=y.lastIndexOf(createPath(n));-1===a&&(a=0);var o=e-a;o&&(v=!0,H(o))}(t)})}}(e)}}var P=getHashPath(),m=h(P);P!==m&&replaceHashPath(m);var w=f(),y=[createPath(w)];function H(n){t.go(n)}var x=0;function L(n){1===(x+=n)&&1===n?window.addEventListener(HashChangeEvent$1,g):0===x&&window.removeEventListener(HashChangeEvent$1,g)}var O=!1;var E={length:t.length,action:"POP",location:w,createHref:function(n){return"#"+h(c+createPath(n))},push:function(n,t){var r=createLocation(n,void 0,void 0,E.location);l.confirmTransitionTo(r,"PUSH",i,function(n){if(n){var t=createPath(r),e=h(c+t);if(getHashPath()!==e){p=t,pushHashPath(e);var a=y.lastIndexOf(createPath(E.location)),o=y.slice(0,-1===a?0:a+1);o.push(t),y=o,d({action:"PUSH",location:r})}else d()}})},replace:function(n,t){var o="REPLACE",r=createLocation(n,void 0,void 0,E.location);l.confirmTransitionTo(r,o,i,function(n){if(n){var t=createPath(r),e=h(c+t);getHashPath()!==e&&(p=t,replaceHashPath(e));var a=y.indexOf(createPath(E.location));-1!==a&&(y[a]=t),d({action:o,location:r})}})},go:H,goBack:function(){H(-1)},goForward:function(){H(1)},block:function(n){void 0===n&&(n=!1);var t=l.setPrompt(n);return O||(L(1),O=!0),function(){return O&&(O=!1,L(-1)),t()}},listen:function(n){var t=l.appendListener(n);return L(1),function(){L(-1),t()}}};return E}function clamp(n,t,e){return Math.min(Math.max(n,t),e)}function createMemoryHistory(n){void 0===n&&(n={});var t=n,o=t.getUserConfirmation,e=t.initialEntries,a=void 0===e?["/"]:e,r=t.initialIndex,i=void 0===r?0:r,c=t.keyLength,s=void 0===c?6:c,h=createTransitionManager();function u(n){_extends(g,n),g.length=g.entries.length,h.notifyListeners(g.location,g.action)}function f(){return Math.random().toString(36).substr(2,s)}var l=clamp(i,0,a.length-1),d=a.map(function(n){return createLocation(n,void 0,"string"==typeof n?f():n.key||f())}),v=createPath;function p(n){var t=clamp(g.index+n,0,g.entries.length-1),e=g.entries[t];h.confirmTransitionTo(e,"POP",o,function(n){n?u({action:"POP",location:e,index:t}):u()})}var g={length:d.length,action:"POP",location:d[l],index:l,entries:d,createHref:v,push:function(n,t){var a=createLocation(n,t,f(),g.location);h.confirmTransitionTo(a,"PUSH",o,function(n){if(n){var t=g.index+1,e=g.entries.slice(0);e.length>t?e.splice(t,e.length-t,a):e.push(a),u({action:"PUSH",location:a,index:t,entries:e})}})},replace:function(n,t){var e="REPLACE",a=createLocation(n,t,f(),g.location);h.confirmTransitionTo(a,e,o,function(n){n&&(g.entries[g.index]=a,u({action:e,location:a}))})},go:p,goBack:function(){p(-1)},goForward:function(){p(1)},canGo:function(n){var t=g.index+n;return 0<=t&&t<g.entries.length},block:function(n){return void 0===n&&(n=!1),h.setPrompt(n)},listen:function(n){return h.appendListener(n)}};return g}exports.createBrowserHistory=createBrowserHistory,exports.createHashHistory=createHashHistory,exports.createMemoryHistory=createMemoryHistory,exports.createLocation=createLocation,exports.locationsAreEqual=locationsAreEqual,exports.parsePath=parsePath,exports.createPath=createPath;