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