xstate - npm Package Compare versions

.vscode/settings.json

lib/actions.d.ts

lib/actions.js

lib/scxml.d.ts

lib/scxml.js

src/actions.ts

test/actionCreators.test.ts

test/activities.test.ts

test/data.test.ts

test/initial.test.ts

test/localTransitions.test.ts

test/transient.test.ts

2

dist/xstate.js

		@@ -1,1 +0,1 @@
		!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.xstate=e():t.xstate=e()}(this,function(){return function(t){function e(i){if(n[i])return n[i].exports;var r=n[i]={i:i,l:!1,exports:{}};return t[i].call(r.exports,r,r.exports,e),r.l=!0,r.exports}var n={};return e.m=t,e.c=n,e.d=function(t,n,i){e.o(t,n)\|\|Object.defineProperty(t,n,{configurable:!1,enumerable:!0,get:i})},e.n=function(t){var n=t&&t.__esModule?function(){return t.default}:function(){return t};return e.d(n,"a",n),n},e.o=function(t,e){return Object.prototype.hasOwnProperty.call(t,e)},e.p="",e(e.s=4)}([function(t,e,n){"use strict";function i(t){try{return"string"==typeof t\|\|"number"==typeof t?""+t:t.type}catch(t){throw new Error("Events must be strings or objects with a string event.type property.")}}function r(t){try{return Array.isArray(t)?t:t.toString().split(".")}catch(e){throw new Error("'"+t+"' is not a valid state path.")}}function a(t){if(t instanceof s.State)return t.value;if("object"==typeof t&&!(t instanceof s.State))return t;var e=r(t);if(1===e.length)return e[0];for(var n={},i=n,a=0;a<e.length-1;a++)a===e.length-2?i[e[a]]=e[a+1]:(i[e[a]]={},i=i[e[a]]);return n}function o(t,e){var n={};return Object.keys(t).forEach(function(i){n[i]=e(t[i],i,t)}),n}Object.defineProperty(e,"__esModule",{value:!0});var s=n(2);e.getEventType=i,e.toStatePath=r,e.toTrie=a,e.mapValues=o},function(t,e,n){"use strict";function i(t){return new f(t)}var r=this&&this.__assign\|\|Object.assign\|\|function(t){for(var e,n=1,i=arguments.length;n<i;n++){e=arguments[n];for(var r in e)Object.prototype.hasOwnProperty.call(e,r)&&(t[r]=e[r])}return t};Object.defineProperty(e,"__esModule",{value:!0});var a=n(0),o=n(3);e.matchesState=o.default;var s=n(6);e.mapState=s.default;var c=n(2);e.State=c.State;var u=".",f=function(){function t(e){var n=this;this.config=e,this.__cache={events:void 0,relativeValue:new Map,initialState:void 0},this.key=e.key\|\|"(machine)",this.parent=e.parent,this.machine=this.parent?this.parent.machine:this,this.id=this.parent?this.parent.id+u+this.key:this.key,this.relativeId=this.parent&&this.parent.parent?this.parent.relativeId+u+this.key:this.key,this.initial=e.initial,this.parallel=!!e.parallel,this.states=e.states?a.mapValues(e.states,function(e,i){return new t(r({},e,{key:i,parent:n}))}):{},this.on=e.on,this.strict=!!e.strict,this.onEntry=e.onEntry?[].concat(e.onEntry):void 0,this.onExit=e.onExit?[].concat(e.onExit):void 0}return t.prototype.getStateNodes=function(t){var e=this,n=t instanceof c.State?t.value:a.toTrie(t);if("string"==typeof n){var i=this.states[n].initial;return i?this.getStateNodes((o={},o[n]=i,o)):[this.states[n]]}var r=Object.keys(n);return r.map(function(t){return e.states[t]}).concat(r.map(function(t){return e.states[t].getStateNodes(n[t])}).reduce(function(t,e){return t.concat(e)}));var o},t.prototype.handles=function(t){var e=a.getEventType(t);return!!this.on&&e in this.on},t.prototype.transition=function(t,e,n){if(this.strict){var i=a.getEventType(e);if(-1===this.events.indexOf(i))throw new Error("Machine '"+this.id+"' does not accept event '"+i+"'")}var r=this.transitionStateValue(t,e,n),o=r[0],s=r[1];return o?new c.State(o,c.State.from(t),s.onExit.concat(s.actions).concat(s.onEntry)):c.State.inert(t)},t.prototype.transitionStateValue=function(t,e,n){var i=this,o=t instanceof c.State?t.history:void 0,s=a.toTrie(t);if("string"==typeof s){if(!this.states[s])throw new Error("State '"+s+"' does not exist on machine '"+this.id+"'");var u=this.states[s];if(!u.states\|\|!u.initial)return u.next(e,o?o.value:void 0,n);var f=u.initialState.value;g={},g[s]=f,s=g}var h=a.mapValues(s,function(t,r){var a=o?o.value[r]:void 0,s=new c.State(t,a?c.State.from(a):void 0);return i.states[r].transitionStateValue(s,e,n)});if(Array.prototype.every.call(Object.keys(h),function(t){return void 0===h[t][0]})){if(this.parallel)return[void 0,{onEntry:[],onExit:[],actions:[]}];var l=Object.keys(h)[0],p=this.states[l].next(e,o?o.value:void 0),v=p[0],y=p[1],d=h[l][1];return[v,{onEntry:d.onEntry.concat(y.onEntry),actions:d.actions.concat(y.actions),onExit:d.onExit.concat(y.onExit)}]}this.parallel&&(h=r({},a.mapValues(this.initialState.value,function(t){return[t,{onEntry:[],onExit:[],actions:[]}]}),h));var E={onEntry:[],actions:[],onExit:[]};return[a.mapValues(h,function(t,e){var n=t[0],i=t[1];return i.onEntry&&(r=E.onEntry).push.apply(r,i.onEntry),i.actions&&(a=E.actions).push.apply(a,i.actions),i.onExit&&(o=E.onExit).push.apply(o,i.onExit),n\|\|s[e];var r,a,o}),E];var g},t.prototype.next=function(t,e,n){var i=a.getEventType(t),r={onEntry:[],onExit:[],actions:[]};if(this.onExit&&(r.onExit=this.onExit),!this.on\|\|!this.on[i])return[void 0,r];var o,s=this.on[i];if("string"==typeof s)o=s;else for(var c=0,u=Object.keys(s);c<u.length;c++){var f=u[c],h=s[f],l=h.cond,p=h.actions,v="string"==typeof t\|\|"number"==typeof t?{type:t}:t;if(!l\|\|l(n,v)){o=f,p&&(r.actions=r.actions.concat(p));break}}if(!o)return[void 0,r];var y=a.toStatePath(o),d=this.parent,E=e,g=this.key;if(y.forEach(function(e){if(!d\|\|!d.states)throw new Error("Unable to read '"+e+"'");if("$history"===e)if(E)e="object"==typeof E?Object.keys(E)[0]:E;else{if(!d.initial)throw new Error("Cannot read '$history' from state '"+d.id+"': missing 'initial'");e=d.initial}if(void 0===(d=d.states[e]))throw new Error("Event '"+t+"' on state '"+g+"' leads to undefined state '"+y+"'.");d.onEntry&&(r.onEntry=r.onEntry.concat(d.onEntry)),g=e,E&&(E=E[e])}),!d)throw new Error("no state");for(;d.initial;){if(!d\|\|!d.states)throw new Error("Invalid initial state");d=d.states[d.initial],d.onEntry&&(r.onEntry=r.onEntry.concat(d.onEntry))}return[d.getRelativeValue(this.parent),r]},Object.defineProperty(t.prototype,"initialStateValue",{get:function(){return this.__cache.initialState=this.__cache.initialState\|\|(this.parallel?a.mapValues(this.states,function(t){return t.initialStateValue}):this.initial),this.__cache.initialState},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"initialState",{get:function(){var t=this.initialStateValue;if(!t)throw new Error("Cannot retrieve initial state from simple state '"+this.id+".'");var e=this.getStateNodes(t).reduce(function(t,e){return e.onEntry?t.concat(e.onEntry):t},[]);return new c.State(t,void 0,e)},enumerable:!0,configurable:!0}),t.prototype.getStates=function(t){var e=this;if("string"==typeof t)return[this.states[t]];var n=[];return Object.keys(t).forEach(function(i){n.push.apply(n,e.states[i].getStates(t[i]))}),n},t.prototype.getState=function(t){var e=a.toStatePath(t);try{return e.reduce(function(t,e){if(!t.states)throw new Error("Cannot retrieve subPath '"+e+"' from node with no states");return t.states[e]},this)}catch(e){throw new Error("State '"+t+" does not exist on machine '"+this.id+"'")}},Object.defineProperty(t.prototype,"events",{get:function(){if(this.__cache.events)return this.__cache.events;var t=this.states,e=new Set(this.on?Object.keys(this.on):void 0);return t&&Object.keys(t).forEach(function(n){var i=t[n];if(i.states)for(var r=0,a=i.events;r<a.length;r++){var o=a[r];e.add(""+o)}}),this.__cache.events=Array.from(e)},enumerable:!0,configurable:!0}),t.prototype.getRelativeValue=function(t){var e=t?this.__cache.relativeValue.get(t):void 0;if(e)return e;for(var n=this.initialStateValue,i=n?(s={},s[this.key]=n,s):this.key,a=this.parent;a&&a!==t;){var o=a.initialStateValue;c={},c[a.key]="object"==typeof o&&"object"==typeof i?r({},o,i):i,i=c,a=a.parent}return this.__cache.relativeValue.set(t,i),i;var s,c},t}();e.StateNode=f,e.Machine=i},function(t,e,n){"use strict";Object.defineProperty(e,"__esModule",{value:!0});var i=n(5),r=n(0),a=function(){function t(t,e,n){void 0===n&&(n=[]),this.value=t,this.history=e,this.actions=n}return t.from=function(e){return e instanceof t?e:new t(r.toTrie(e))},t.inert=function(e){return e instanceof t?e.actions.length?new t(e.value,e.history,[]):e:t.from(e)},t.prototype.toString=function(){if("string"==typeof this.value)return this.value;for(var t=[],e=this.value;;){if("string"==typeof e){t.push(e);break}var n=Object.keys(e),r=n[0];if(n.slice(1).length)return;t.push(r),e=e[r]}return t.join(i.STATE_DELIMITER)},t}();e.State=a},function(t,e,n){"use strict";function i(t,e){var n=r.toTrie(t),a=r.toTrie(e);return"string"==typeof a?"string"==typeof n?a===n:a in n:"string"==typeof n?n in a:Object.keys(n).every(function(t){return t in a&&i(n[t],a[t])})}Object.defineProperty(e,"__esModule",{value:!0});var r=n(0);e.default=i},function(t,e,n){n(1),t.exports=n(1)},function(t,e,n){"use strict";Object.defineProperty(e,"__esModule",{value:!0}),e.STATE_DELIMITER="."},function(t,e,n){"use strict";function i(t,e){var n;return Object.keys(t).forEach(function(t){r.default(t,e)&&(!n\|\|e.length>n.length)&&(n=t)}),t[n]}Object.defineProperty(e,"__esModule",{value:!0});var r=n(3);e.default=i}])});
		!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.xstate=e():t.xstate=e()}(this,function(){return function(t){function e(i){if(n[i])return n[i].exports;var a=n[i]={i:i,l:!1,exports:{}};return t[i].call(a.exports,a,a.exports,e),a.l=!0,a.exports}var n={};return e.m=t,e.c=n,e.d=function(t,n,i){e.o(t,n)\|\|Object.defineProperty(t,n,{configurable:!1,enumerable:!0,get:i})},e.n=function(t){var n=t&&t.__esModule?function(){return t.default}:function(){return t};return e.d(n,"a",n),n},e.o=function(t,e){return Object.prototype.hasOwnProperty.call(t,e)},e.p="",e(e.s=4)}([function(t,e,n){"use strict";function i(t){try{return"string"==typeof t\|\|"number"==typeof t?""+t:t.type}catch(t){throw new Error("Events must be strings or objects with a string event.type property.")}}function a(t){try{return Array.isArray(t)?t:t.toString().split(".")}catch(e){throw new Error("'"+t+"' is not a valid state path.")}}function r(t){if(t instanceof s.State)return t.value;if("object"==typeof t&&!(t instanceof s.State))return t;var e=a(t);if(1===e.length)return e[0];for(var n={},i=n,r=0;r<e.length-1;r++)r===e.length-2?i[e[r]]=e[r+1]:(i[e[r]]={},i=i[e[r]]);return n}function o(t,e){var n={};return Object.keys(t).forEach(function(i){n[i]=e(t[i],i,t)}),n}Object.defineProperty(e,"__esModule",{value:!0});var s=n(2);e.getEventType=i,e.toStatePath=a,e.toTrie=r,e.mapValues=o},function(t,e,n){"use strict";function i(t){return new l(t)}var a=this&&this.__assign\|\|Object.assign\|\|function(t){for(var e,n=1,i=arguments.length;n<i;n++){e=arguments[n];for(var a in e)Object.prototype.hasOwnProperty.call(e,a)&&(t[a]=e[a])}return t};Object.defineProperty(e,"__esModule",{value:!0});var r=n(0),o=n(3);e.matchesState=o.default;var s=n(6);e.mapState=s.default;var c=n(2);e.State=c.State;var u=n(7),f=".",l=function(){function t(e){var n=this;this.config=e,this.__cache={events:void 0,relativeValue:new Map,initialState:void 0},this.key=e.key\|\|"(machine)",this.parent=e.parent,this.machine=this.parent?this.parent.machine:this,this.id=this.parent?this.parent.id+f+this.key:this.key,this.relativeId=this.parent&&this.parent.parent?this.parent.relativeId+f+this.key:this.key,this.initial=e.initial,this.parallel=!!e.parallel,this.states=e.states?r.mapValues(e.states,function(e,i){return new t(a({},e,{key:i,parent:n}))}):{},this.on=e.on,this.strict=!!e.strict,this.onEntry=e.onEntry?[].concat(e.onEntry):void 0,this.onExit=e.onExit?[].concat(e.onExit):void 0,this.data=e.data,this.activities=e.activities}return t.prototype.getStateNodes=function(t){var e=this,n=t instanceof c.State?t.value:r.toTrie(t);if("string"==typeof n){var i=this.states[n].initial;return i?this.getStateNodes((o={},o[n]=i,o)):[this.states[n]]}var a=Object.keys(n);return a.map(function(t){return e.states[t]}).concat(a.map(function(t){return e.states[t].getStateNodes(n[t])}).reduce(function(t,e){return t.concat(e)}));var o},t.prototype.handles=function(t){var e=r.getEventType(t);return!!this.on&&e in this.on},t.prototype.transition=function(t,e,n){if(this.strict){var i=r.getEventType(e);if(-1===this.events.indexOf(i))throw new Error("Machine '"+this.id+"' does not accept event '"+i+"'")}var a=this.transitionStateValue(t,e,n),o=this.stateTransitionToState(a,t);if(!o)return c.State.inert(t);var s,u=o;do{s=u,u=this.stateTransitionToState(this.transitionStateValue(s,"",n),s)}while(u);return s},t.prototype.stateTransitionToState=function(t,e){var n=t.stateValue,i=t.actions,r=t.activities;if(n){var o=e instanceof c.State?e.activities:void 0,s=a({},o,r);return new c.State(n,c.State.from(e),i?i.onExit.concat(i.actions).concat(i.onEntry):[],s,this.getStateNodes(n).reduce(function(t,e){return t[e.id]=e.data,t},{}))}},t.prototype.transitionStateValue=function(t,e,n){var i=this,o=t instanceof c.State?t.history:void 0,s=r.toTrie(t);if("string"==typeof s){if(!this.states[s])throw new Error("State '"+s+"' does not exist on machine '"+this.id+"'");var u=this.states[s];if(!u.states\|\|!u.initial)return u.next(e,o?o.value:void 0,n);var f=u.initialState.value;m={},m[s]=f,s=m}var l=[],h=r.mapValues(s,function(t,a){var r=o?o.value[a]:void 0,s=new c.State(t,r?c.State.from(r):void 0),u=i.states[a],f=u.transitionStateValue(s,e,n);return f.stateValue\|\|l.push(u.next(e,o?o.value:void 0,n)),f});if(Array.prototype.every.call(Object.keys(h),function(t){return void 0===h[t].stateValue})){if(this.parallel)return l.length?l[0]:{stateValue:void 0,actions:{onEntry:[],onExit:[],actions:[]},activities:void 0};var v=Object.keys(h)[0],p=this.states[v].next(e,o?o.value:void 0,n),y=p.stateValue,d=p.actions,E=p.activities,g=h[v].actions,S=h[v].activities,b=a({},S,E);return{stateValue:y,actions:d?g?{onEntry:g.onEntry.concat(d.onEntry),actions:g.actions.concat(d.actions),onExit:g.onExit.concat(d.onExit)}:d:g,activities:b}}this.parallel&&(h=a({},r.mapValues(this.initialState.value,function(t){return{stateValue:t,actions:{onEntry:[],onExit:[],actions:[]},activities:void 0}}),h));var x={onEntry:[],actions:[],onExit:[]},_={};return{stateValue:r.mapValues(h,function(t,e){var n=t.stateValue,i=t.actions,a=t.activities;return i&&(i.onEntry&&(r=x.onEntry).push.apply(r,i.onEntry),i.actions&&(o=x.actions).push.apply(o,i.actions),i.onExit&&(c=x.onExit).push.apply(c,i.onExit)),a&&Object.assign(_,a),n\|\|s[e];var r,o,c}),actions:x,activities:_};var m},t.prototype.next=function(t,e,n){var i=this,o=r.getEventType(t),s={onEntry:[],onExit:[],actions:[]},c={};if(this.onExit&&(s.onExit=this.onExit),this.activities&&this.activities.forEach(function(t){c[r.getEventType(t)]=!1,s.onExit=s.onExit.concat(u.stop(t))}),!this.on\|\|!this.on[o])return{stateValue:void 0,actions:s,activities:c};var l,h=this.on[o];if("string"==typeof h)l=h;else for(var v=Array.isArray(h)?h:Object.keys(h).map(function(t){return a({},h[t],{target:t})}),p=0,y=v;p<y.length;p++){var d=y[p],E=d,g=E.cond,S=E.actions,b=n\|\|{},x="string"==typeof t\|\|"number"==typeof t?{type:t}:t;if(!g\|\|g(b,x)){l=d.target,S&&(s.actions=s.actions.concat(S));break}}if(!l)return{stateValue:void 0,actions:s,activities:c};var _=r.toStatePath(l),m=this.parent,T=e,V=this.key;if(_.forEach(function(e){if(!m\|\|!m.states)throw new Error("Unable to read '"+e+"'");if("$history"===e)if(T)e="object"==typeof T?Object.keys(T)[0]:T;else{if(!m.initial)throw new Error("Cannot read '$history' from state '"+m.id+"': missing 'initial'");e=m.initial}else if(""===e)return s.onExit=[],void(m=m.states[i.key]);if(void 0===(m=m.states[e]))throw new Error("Event '"+t+"' on state '"+V+"' leads to undefined state '"+_.join(f)+"'.");m.onEntry&&(s.onEntry=s.onEntry.concat(m.onEntry)),m.activities&&m.activities.forEach(function(t){c[r.getEventType(t)]=!0,s.onEntry=s.onEntry.concat(u.start(t))}),V=e,T&&(T=T[e])}),!m)throw new Error("no state");for(;m.initial;){if(!m\|\|!m.states)throw new Error("Invalid initial state");m=m.states[m.initial],m.onEntry&&(s.onEntry=s.onEntry.concat(m.onEntry)),m.activities&&m.activities.forEach(function(t){c[r.getEventType(t)]=!0,s.onEntry=s.onEntry.concat(u.start(t))})}return{stateValue:m.getRelativeValue(this.parent),actions:s,activities:c}},Object.defineProperty(t.prototype,"resolvedStateValue",{get:function(){var t=this.key;return this.parallel?(e={},e[t]=r.mapValues(this.states,function(t){return t.resolvedStateValue[t.key]}),e):this.initial?(n={},n[t]=this.states[this.initial].resolvedStateValue,n):t;var e,n},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"initialStateValue",{get:function(){var t=this.__cache.initialState\|\|(this.parallel?r.mapValues(this.states,function(t){return t.initialStateValue}):this.resolvedStateValue[this.key]);return this.__cache.initialState=t,this.__cache.initialState},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"initialState",{get:function(){var t=this.initialStateValue;if(!t)throw new Error("Cannot retrieve initial state from simple state '"+this.id+".'");var e=this.getStateNodes(t).reduce(function(t,e){return e.onEntry?t.concat(e.onEntry):t},[]);return new c.State(t,void 0,e)},enumerable:!0,configurable:!0}),t.prototype.getStates=function(t){var e=this;if("string"==typeof t)return[this.states[t]];var n=[];return Object.keys(t).forEach(function(i){n.push.apply(n,e.states[i].getStates(t[i]))}),n},t.prototype.getState=function(t){var e=r.toStatePath(t);try{return e.reduce(function(t,e){if(!t.states)throw new Error("Cannot retrieve subPath '"+e+"' from node with no states");return t.states[e]},this)}catch(e){throw new Error("State '"+t+" does not exist on machine '"+this.id+"'")}},Object.defineProperty(t.prototype,"events",{get:function(){if(this.__cache.events)return this.__cache.events;var t=this.states,e=new Set(this.on?Object.keys(this.on):void 0);return t&&Object.keys(t).forEach(function(n){var i=t[n];if(i.states)for(var a=0,r=i.events;a<r.length;a++){var o=r[a];e.add(""+o)}}),this.__cache.events=Array.from(e)},enumerable:!0,configurable:!0}),t.prototype.getRelativeValue=function(t){var e=t?this.__cache.relativeValue.get(t):void 0;if(e)return e;for(var n=this.initialStateValue,i=n?(s={},s[this.key]=n,s):this.key,r=this.parent;r&&r!==t;){var o=r.initialStateValue;c={},c[r.key]=r.parallel&&"object"==typeof o&&"object"==typeof i?a({},o,i):i,i=c,r=r.parent}return this.__cache.relativeValue.set(t,i),i;var s,c},t}();e.StateNode=l,e.Machine=i},function(t,e,n){"use strict";Object.defineProperty(e,"__esModule",{value:!0});var i=n(5),a=n(0),r=function(){function t(t,e,n,a,r){void 0===n&&(n=[]),void 0===a&&(a=i.EMPTY_ACTIVITY_MAP),void 0===r&&(r={}),this.value=t,this.history=e,this.actions=n,this.activities=a,this.data=r}return t.from=function(e){return e instanceof t?e:new t(a.toTrie(e))},t.inert=function(e){return e instanceof t?e.actions.length?new t(e.value,e.history,[]):e:t.from(e)},t.prototype.toString=function(){if("string"==typeof this.value)return this.value;for(var t=[],e=this.value;;){if("string"==typeof e){t.push(e);break}var n=Object.keys(e),a=n[0];if(n.slice(1).length)return;t.push(a),e=e[a]}return t.join(i.STATE_DELIMITER)},t}();e.State=r},function(t,e,n){"use strict";function i(t,e){var n=a.toTrie(t),r=a.toTrie(e);return"string"==typeof r?"string"==typeof n?r===n:r in n:"string"==typeof n?n in r:Object.keys(n).every(function(t){return t in r&&i(n[t],r[t])})}Object.defineProperty(e,"__esModule",{value:!0});var a=n(0);e.default=i},function(t,e,n){n(1),t.exports=n(1)},function(t,e,n){"use strict";Object.defineProperty(e,"__esModule",{value:!0}),e.STATE_DELIMITER=".",e.EMPTY_ACTIVITY_MAP={}},function(t,e,n){"use strict";function i(t,e){var n;return Object.keys(t).forEach(function(t){a.default(t,e)&&(!n\|\|e.length>n.length)&&(n=t)}),t[n]}Object.defineProperty(e,"__esModule",{value:!0});var a=n(3);e.default=i},function(t,e,n){"use strict";Object.defineProperty(e,"__esModule",{value:!0});var i=n(0);e.actionTypes={start:"xstate.start",stop:"xstate.stop",raise:"xstate.raise",send:"xstate.send",cancel:"xstate.cancel"};var a=function(t){return function(e){var n="string"==typeof e\|\|"number"==typeof e?{type:e}:e;return{type:t,activity:i.getEventType(e),data:n}}},r=function(t){return"string"==typeof t\|\|"number"==typeof t?{type:t}:t};e.raise=function(t){return{type:e.actionTypes.raise,event:t}},e.send=function(t,n){return{type:e.actionTypes.send,event:r(t),delay:n?n.delay:void 0,id:n&&void 0!==n.id?n.id:i.getEventType(t)}},e.cancel=function(t){return{type:e.actionTypes.cancel,sendId:t}},e.start=a(e.actionTypes.start),e.stop=a(e.actionTypes.stop)}])});

2

dist/xstate.utils.js

		@@ -1,1 +0,1 @@
		!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.xstateUtils=e():t.xstateUtils=e()}(this,function(){return function(t){function e(n){if(r[n])return r[n].exports;var o=r[n]={i:n,l:!1,exports:{}};return t[n].call(o.exports,o,o.exports,e),o.l=!0,o.exports}var r={};return e.m=t,e.c=r,e.d=function(t,r,n){e.o(t,r)\|\|Object.defineProperty(t,r,{configurable:!1,enumerable:!0,get:n})},e.n=function(t){var r=t&&t.__esModule?function(){return t.default}:function(){return t};return e.d(r,"a",r),r},e.o=function(t,e){return Object.prototype.hasOwnProperty.call(t,e)},e.p="",e(e.s=2)}([function(t,e,r){"use strict";function n(t){var e=t.states;return Object.keys(e).reduce(function(t,r){var o=e[r],i=n(e[r]);return t.push.apply(t,[o].concat(i)),t},[])}function o(t){return"string"==typeof t?[t]:Object.keys(t)}function i(t,e){void 0===e&&(e={});var r=t.states;e[t.key]=!0;var n=Object.keys(r).reduce(function(t,n){if(e[n])return t;var o=r[n];return t.push.apply(t,i(o,e)),e[n]=!0,t},[]);if(!t.on)return n;var a=Object.keys(t.on).reduce(function(r,n){if(!t.on\|\|!t.parent)return r;var a=t.parent,s=t.on[n];return s?(o(s).forEach(function(o){var s=a.getState(o),u={event:n,source:t,target:s};r.push(u),e[o]\|\|(r.push.apply(r,i(s,e)),e[o]=!0)}),r):r},[]);return n.concat(a)}function a(t){var e=t.parent?{}:void 0,r={};if(t.on)for(var n=0,o=Object.keys(t.on);n<o.length;n++){var i=o[n];if(t.parent&&e){var s=t.machine.transition(t.relativeId,i);s&&(e[i]={state:s.value})}}if(e&&(r[t.relativeId]=e),t.states)for(var u=0,c=Object.keys(t.states);u<c.length;u++){var f=c[u],v=t.states[f],y=l.mapValues(a(v),function(t){return p({},e,t)});Object.assign(r,y)}return r}function s(t){if(t.states&&t.initial){var e=a(t),r=u(t.initialState),n=(o={},o[r]=[],o);return c(e,r,n),n;var o}}function u(t){if("string"==typeof t)return t;var e=Object.keys(t)[0];return[e].concat(u(t[e])).join(".")}function c(t,e,r,n){void 0===n&&(n=new Set),n.add(e);for(var o=t[e],i=0,a=Object.keys(o);i<a.length;i++){var s=a[i],f=o[s].state;if(f){var p=u(f);(!r[p]\|\|r[p].length>r[e].length+1)&&(r[p]=r[e].concat([{state:e,event:s}]))}}for(var l=0,v=Object.keys(o);l<v.length;l++){var y=v[l],f=o[y].state;if(f){var p=u(f);n.has(p)\|\|c(t,p,r,n)}}return r}function f(t){function e(t,i){if(n.add(t),o.push(t),t===i)console.log(o.join(" > "));else for(var a=0,s=Object.keys(r[t]);a<s.length;a++){var c=s[a],f=r[t][c].state;if(f){var p=u(f);n.has(p)\|\|e(p,i)}}o.pop(),n.delete(t)}if(t.states&&t.initial){var r=a(t),n=new Set,o=[];Object.keys(r).forEach(function(r){e(t.initial,r)})}}var p=this&&this.__assign\|\|Object.assign\|\|function(t){for(var e,r=1,n=arguments.length;r<n;r++){e=arguments[r];for(var o in e)Object.prototype.hasOwnProperty.call(e,o)&&(t[o]=e[o])}return t};Object.defineProperty(e,"__esModule",{value:!0});var l=r(1);e.getNodes=n,e.getEdges=i,e.getAdjacencyMap=a,e.getShortestPaths=s,e.getSimplePaths=f},function(t,e,r){"use strict";function n(t){try{return"string"==typeof t\|\|"number"==typeof t?""+t:t.type}catch(t){throw new Error("Events must be strings or objects with a string event.type property.")}}function o(t){try{return Array.isArray(t)?t:t.toString().split(".")}catch(e){throw new Error("'"+t+"' is not a valid state path.")}}function i(t){if("object"==typeof t&&!(t instanceof s.default))return t;var e=o(t);if(1===e.length)return e[0];for(var r={},n=r,i=0;i<e.length-1;i++)i===e.length-2?n[e[i]]=e[i+1]:(n[e[i]]={},n=n[e[i]]);return r}function a(t,e){var r={};return Object.keys(t).forEach(function(n){r[n]=e(t[n],n,t)}),r}Object.defineProperty(e,"__esModule",{value:!0});var s=r(3);e.getEventType=n,e.toStatePath=o,e.toTrie=i,e.mapValues=a},function(t,e,r){r(0),t.exports=r(0)},function(t,e,r){"use strict";Object.defineProperty(e,"__esModule",{value:!0});var n=r(4),o=r(1),i=function(){function t(t,e,r){this.value=t,this.history=e,this.effects=r}return t.from=function(e){return e instanceof t?e:new t(o.toTrie(e))},t.prototype.toString=function(){if("string"==typeof this.value)return this.value;for(var t=[],e=this.value;;){if("string"==typeof e){t.push(e);break}var r=Object.keys(e),o=r[0];if(r.slice(1).length)return;t.push(o),e=e[o]}return t.join(n.STATE_DELIMITER)},t}();e.default=i},function(t,e,r){"use strict";Object.defineProperty(e,"__esModule",{value:!0}),e.STATE_DELIMITER="."}])});
		!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.xstateUtils=e():t.xstateUtils=e()}(this,function(){return function(t){function e(n){if(r[n])return r[n].exports;var a=r[n]={i:n,l:!1,exports:{}};return t[n].call(a.exports,a,a.exports,e),a.l=!0,a.exports}var r={};return e.m=t,e.c=r,e.d=function(t,r,n){e.o(t,r)\|\|Object.defineProperty(t,r,{configurable:!1,enumerable:!0,get:n})},e.n=function(t){var r=t&&t.__esModule?function(){return t.default}:function(){return t};return e.d(r,"a",r),r},e.o=function(t,e){return Object.prototype.hasOwnProperty.call(t,e)},e.p="",e(e.s=2)}([function(t,e,r){"use strict";function n(t){var e=t.states;return Object.keys(e).reduce(function(t,r){var a=e[r],i=n(e[r]);return t.push.apply(t,[a].concat(i)),t},[])}function a(t){return"string"==typeof t?[{target:t}]:Array.isArray(t)?t:Object.keys(t).map(function(e){return p({target:e},t[e])})}function i(t,e){if(void 0===e&&(e={}),t.parallel)return Object.keys(t.states).map(function(e){return i(t.states[e])}).reduce(function(t,e){return t.concat(e)},[]);var r=t.states;e[t.key]=!0;var n=Object.keys(r).reduce(function(t,n){if(e[n])return t;var a=r[n];return t.push.apply(t,i(a,e)),e[n]=!0,t},[]);if(!t.on)return n;var o=Object.keys(t.on).reduce(function(r,n){if(!t.on\|\|!t.parent)return r;var o=t.parent,s=t.on[n];return s?(a(s).forEach(function(a){var s=a.target,u=a.cond,c=o.getState(s),f={event:n,source:t,target:c,cond:u};r.push(f),e[s]\|\|(r.push.apply(r,i(c,e)),e[s]=!0)}),r):r},[]);return n.concat(o)}function o(t){function e(a){var i=JSON.stringify(a);if(!r[i]){r[i]={};for(var o=0,s=n;o<s.length;o++){var u=s[o],c=t.transition(a,u);r[i][u]={state:c.value},e(c.value)}}}var r={},n=t.events;return e(t.initialState.value),r}function s(t){function e(t){var n=JSON.stringify(t);i.add(n);for(var o=r[n],s=0,u=Object.keys(o);s<u.length;s++){var c=u[s],f=o[c].state;if(f){var p=JSON.stringify(v.toTrie(f));(!a[p]\|\|a[p].length>a[n].length+1)&&(a[p]=(a[n]\|\|[]).concat([{state:t,event:c}]))}}for(var l=0,y=Object.keys(o);l<y.length;l++){var h=y[l],f=o[h].state;if(f){var p=JSON.stringify(f);i.has(p)\|\|e(f)}}return a}if(!t.states)return l;var r=o(t),n=JSON.stringify(t.initialState.value),a=(s={},s[n]=[],s),i=new Set;return e(t.initialState.value),a;var s}function u(t){var e=s(t);return Object.keys(e).map(function(t){return{state:JSON.parse(t),path:e[t]}})}function c(t){function e(t,o){if(n.add(t),t===o)i[o]=i[o]\|\|[],i[o].push(a.slice());else for(var s=0,u=Object.keys(r[t]);s<u.length;s++){var c=u[s],f=r[t][c].state;if(f){var p=JSON.stringify(f);n.has(p)\|\|(a.push({state:JSON.parse(t),event:c}),e(p,o))}}a.pop(),n.delete(t)}if(!t.states)return l;var r=o(t),n=new Set,a=[],i={},s=JSON.stringify(t.initialState.value);return Object.keys(r).forEach(function(t){e(s,t)}),i}function f(t){var e=c(t);return Object.keys(e).map(function(t){return{state:JSON.parse(t),paths:e[t]}})}var p=this&&this.__assign\|\|Object.assign\|\|function(t){for(var e,r=1,n=arguments.length;r<n;r++){e=arguments[r];for(var a in e)Object.prototype.hasOwnProperty.call(e,a)&&(t[a]=e[a])}return t};Object.defineProperty(e,"__esModule",{value:!0});var v=r(1),l={};e.getNodes=n,e.getEdges=i,e.getAdjacencyMap=o,e.getShortestPaths=s,e.getShortestPathsAsArray=u,e.getSimplePaths=c,e.getSimplePathsAsArray=f},function(t,e,r){"use strict";function n(t){try{return"string"==typeof t\|\|"number"==typeof t?""+t:t.type}catch(t){throw new Error("Events must be strings or objects with a string event.type property.")}}function a(t){try{return Array.isArray(t)?t:t.toString().split(".")}catch(e){throw new Error("'"+t+"' is not a valid state path.")}}function i(t){if(t instanceof s.State)return t.value;if("object"==typeof t&&!(t instanceof s.State))return t;var e=a(t);if(1===e.length)return e[0];for(var r={},n=r,i=0;i<e.length-1;i++)i===e.length-2?n[e[i]]=e[i+1]:(n[e[i]]={},n=n[e[i]]);return r}function o(t,e){var r={};return Object.keys(t).forEach(function(n){r[n]=e(t[n],n,t)}),r}Object.defineProperty(e,"__esModule",{value:!0});var s=r(3);e.getEventType=n,e.toStatePath=a,e.toTrie=i,e.mapValues=o},function(t,e,r){r(0),t.exports=r(0)},function(t,e,r){"use strict";Object.defineProperty(e,"__esModule",{value:!0});var n=r(4),a=r(1),i=function(){function t(t,e,r,a,i){void 0===r&&(r=[]),void 0===a&&(a=n.EMPTY_ACTIVITY_MAP),void 0===i&&(i={}),this.value=t,this.history=e,this.actions=r,this.activities=a,this.data=i}return t.from=function(e){return e instanceof t?e:new t(a.toTrie(e))},t.inert=function(e){return e instanceof t?e.actions.length?new t(e.value,e.history,[]):e:t.from(e)},t.prototype.toString=function(){if("string"==typeof this.value)return this.value;for(var t=[],e=this.value;;){if("string"==typeof e){t.push(e);break}var r=Object.keys(e),a=r[0];if(r.slice(1).length)return;t.push(a),e=e[a]}return t.join(n.STATE_DELIMITER)},t}();e.State=i},function(t,e,r){"use strict";Object.defineProperty(e,"__esModule",{value:!0}),e.STATE_DELIMITER=".",e.EMPTY_ACTIVITY_MAP={}}])});

2

lib/constants.d.ts

		@@ -0,1 +1,3 @@
		import { ActivityMap } from './types';
		export declare const STATE_DELIMITER = ".";
		export declare const EMPTY_ACTIVITY_MAP: ActivityMap;

1

lib/constants.js

		"use strict";
		Object.defineProperty(exports, "__esModule", { value: true });
		exports.STATE_DELIMITER = '.';
		exports.EMPTY_ACTIVITY_MAP = {};

10

lib/graph.d.ts

		import { StateNode } from './index';
		import { StateValue, Machine, Event } from './types';
		export interface IEdge {
		import { StateValue, Machine, Event, Condition, Action } from './types';
		export interface Edge {
		event: string;
		source: StateNode;
		target: StateNode;
		cond?: Condition;
		actions: Action[];
		}
		export interface INodesAndEdges {
		nodes: StateNode[];
		edges: IEdge[];
		edges: Edge[];
		}
		export declare function getNodes(node: StateNode): StateNode[];
		export declare function getEdges(node: StateNode, visited?: Record<string, true>): IEdge[];
		export declare function getEdges(node: StateNode): Edge[];
		export interface Segment {
		@@ -15,0 +17,0 @@ state: StateValue;

82

lib/graph.js

		@@ -16,46 +16,48 @@ "use strict";
		exports.getNodes = getNodes;
		function getTransitionStateKeys(transition) {
		if (typeof transition === 'string') {
		return [transition];
		function getEventEdges(node, event) {
		var transitions = node.on[event];
		if (typeof transitions === 'string') {
		return [
		{
		source: node,
		target: node.parent.getState(transitions),
		event: event,
		actions: []
		}
		];
		}
		return Object.keys(transition);
		if (Array.isArray(transitions)) {
		return transitions.map(function (transition) {
		return {
		source: node,
		target: node.parent.getState(transition.target),
		event: event,
		actions: transition.actions \|\| [],
		cond: transition.cond
		};
		});
		}
		return Object.keys(transitions).map(function (stateKey) {
		return {
		source: node,
		target: node.parent.getState(stateKey),
		event: event,
		actions: transitions[stateKey].actions \|\| [],
		cond: transitions[stateKey].cond
		};
		});
		}
		function getEdges(node, visited) {
		if (visited === void 0) { visited = {}; }
		var states = node.states;
		visited[node.key] = true;
		var subNodeEdges = Object.keys(states).reduce(function (_edges, key) {
		if (visited[key]) {
		return _edges;
		}
		var subState = states[key];
		_edges.push.apply(_edges, getEdges(subState, visited));
		visited[key] = true;
		return _edges;
		}, []);
		if (!node.on) {
		return subNodeEdges;
		function getEdges(node) {
		var edges = [];
		if (node.states) {
		Object.keys(node.states).forEach(function (stateKey) {
		edges.push.apply(edges, getEdges(node.states[stateKey]));
		});
		}
		var edges = Object.keys(node.on).reduce(function (accEdges, event) {
		if (!node.on \|\| !node.parent) {
		return accEdges;
		}
		var parent = node.parent;
		var transition = node.on[event];
		if (!transition) {
		return accEdges;
		}
		var subStateKeys = getTransitionStateKeys(transition);
		subStateKeys.forEach(function (subStateKey) {
		var subNode = parent.getState(subStateKey);
		var edge = { event: event, source: node, target: subNode };
		accEdges.push(edge);
		if (!visited[subStateKey]) {
		accEdges.push.apply(accEdges, getEdges(subNode, visited));
		visited[subStateKey] = true;
		}
		if (node.on) {
		Object.keys(node.on).forEach(function (event) {
		edges.push.apply(edges, getEventEdges(node, event));
		});
		return accEdges;
		}, []);
		return subNodeEdges.concat(edges);
		}
		return edges;
		}
		@@ -62,0 +64,0 @@ exports.getEdges = getEdges;

8

lib/index.d.ts

		@@ -1,6 +0,6 @@
		import { Event, StateValue, Transition, Action, StandardMachine, ParallelMachine, SimpleOrCompoundStateNodeConfig, MachineConfig, ParallelMachineConfig, EventType, StandardMachineConfig } from './types';
		import { Event, StateValue, Transition, Action, StandardMachine, ParallelMachine, SimpleOrCompoundStateNodeConfig, MachineConfig, ParallelMachineConfig, EventType, StandardMachineConfig, StateNodeConfig, Activity } from './types';
		import matchesState from './matchesState';
		import mapState from './mapState';
		import { State } from './State';
		declare class StateNode {
		declare class StateNode implements StateNodeConfig {
		config: SimpleOrCompoundStateNodeConfig \| StandardMachineConfig \| ParallelMachineConfig;
		@@ -16,5 +16,7 @@ key: string;
		onExit?: Action[];
		activities?: Activity[];
		strict: boolean;
		parent?: StateNode;
		machine: StateNode;
		data: object \| undefined;
		private __cache;
		@@ -25,4 +27,6 @@ constructor(config: SimpleOrCompoundStateNodeConfig \| StandardMachineConfig \| ParallelMachineConfig);
		transition(state: StateValue \| State, event: Event, extendedState?: any): State;
		private stateTransitionToState(stateTransition, prevState);
		private transitionStateValue(state, event, extendedState?);
		private next(event, history?, extendedState?);
		private readonly resolvedStateValue;
		private readonly initialStateValue;
		@@ -29,0 +33,0 @@ readonly initialState: State;

227

lib/index.js

		@@ -18,4 +18,6 @@ "use strict";
		exports.State = State_1.State;
		var actions_1 = require("./actions");
		var STATE_DELIMITER = '.';
		var HISTORY_KEY = '$history';
		var NULL_EVENT = '';
		var StateNode = /** @class */ (function () {
		@@ -55,2 +57,4 @@ function StateNode(config) {
		: undefined;
		this.data = config.data;
		this.activities = config.activities;
		}
		@@ -89,7 +93,25 @@ StateNode.prototype.getStateNodes = function (state) {
		}
		// const stateValue = toTrie(state);
		var _a = this.transitionStateValue(state, event, extendedState), nextStateValue = _a[0], nextActions = _a[1];
		if (!nextStateValue) {
		var stateTransition = this.transitionStateValue(state, event, extendedState);
		var nextState = this.stateTransitionToState(stateTransition, state);
		if (!nextState) {
		return State_1.State.inert(state);
		}
		// Try transitioning from "transient" states from the NULL_EVENT
		// until a state with non-transient transitions is found
		var maybeNextState = nextState;
		var nextStateFromInternalTransition;
		do {
		nextStateFromInternalTransition = maybeNextState;
		maybeNextState = this.stateTransitionToState(this.transitionStateValue(nextStateFromInternalTransition, NULL_EVENT, extendedState), nextStateFromInternalTransition);
		} while (maybeNextState);
		// TODO: handle internally raised events
		return nextStateFromInternalTransition;
		};
		StateNode.prototype.stateTransitionToState = function (stateTransition, prevState) {
		var nextStateValue = stateTransition.stateValue, nextActions = stateTransition.actions, nextActivities = stateTransition.activities;
		if (!nextStateValue) {
		return undefined;
		}
		var prevActivities = prevState instanceof State_1.State ? prevState.activities : undefined;
		var activities = __assign({}, prevActivities, nextActivities);
		return new State_1.State(
		@@ -99,5 +121,16 @@ // next state value
		// history
		State_1.State.from(state),
		State_1.State.from(prevState),
		// effects
		nextActions.onExit.concat(nextActions.actions).concat(nextActions.onEntry));
		nextActions
		? nextActions.onExit
		.concat(nextActions.actions)
		.concat(nextActions.onEntry)
		: [],
		// activities
		activities,
		// data
		this.getStateNodes(nextStateValue).reduce(function (data, stateNode) {
		data[stateNode.id] = stateNode.data;
		return data;
		}, {}));
		};
		@@ -114,2 +147,3 @@ StateNode.prototype.transitionStateValue = function (state, event, extendedState) {
		if (subStateNode.states && subStateNode.initial) {
		// Get the initial state value
		var initialStateValue = subStateNode.initialState.value;
		@@ -119,5 +153,8 @@ stateValue = (_a = {}, _a[stateValue] = initialStateValue, _a);
		else {
		// Transition from the substate
		return subStateNode.next(event, history ? history.value : undefined, extendedState);
		}
		}
		// Potential transition tuples from parent state nodes
		var potentialStateTransitions = [];
		var nextStateValue = utils_1.mapValues(stateValue, function (subStateValue, subStateKey) {
		@@ -127,29 +164,48 @@ var subHistory = history ? history.value[subStateKey] : undefined;
		var subStateNode = _this.states[subStateKey];
		var nextTuple = subStateNode.transitionStateValue(subState, event, extendedState);
		return nextTuple;
		var subStateTransition = subStateNode.transitionStateValue(subState, event, extendedState);
		if (!subStateTransition.stateValue) {
		potentialStateTransitions.push(subStateNode.next(event, history ? history.value : undefined, extendedState));
		}
		return subStateTransition;
		});
		if (Array.prototype.every.call(Object.keys(nextStateValue), function (key) {
		return nextStateValue[key][0] === undefined;
		return nextStateValue[key].stateValue === undefined;
		})) {
		if (this.parallel) {
		return [undefined, { onEntry: [], onExit: [], actions: [] }];
		if (potentialStateTransitions.length) {
		return potentialStateTransitions[0];
		}
		return {
		stateValue: undefined,
		actions: { onEntry: [], onExit: [], actions: [] },
		activities: undefined
		};
		}
		var subStateKey = Object.keys(nextStateValue)[0];
		// try with parent
		var _b = this.states[subStateKey].next(event, history ? history.value : undefined), parentNextValue = _b[0], parentNextActions = _b[1];
		var nextActions = nextStateValue[subStateKey][1];
		return [
		parentNextValue,
		{
		onEntry: nextActions.onEntry.concat(parentNextActions.onEntry),
		actions: nextActions.actions.concat(parentNextActions.actions),
		onExit: nextActions.onExit.concat(parentNextActions.onExit)
		}
		];
		var _b = this.states[subStateKey].next(event, history ? history.value : undefined, extendedState), parentNextValue = _b.stateValue, parentNextActions = _b.actions, parentActivities = _b.activities;
		var nextActions = nextStateValue[subStateKey].actions;
		var activities = nextStateValue[subStateKey].activities;
		var allActivities = __assign({}, activities, parentActivities);
		var allActions = parentNextActions
		? nextActions
		? {
		onEntry: nextActions.onEntry.concat(parentNextActions.onEntry),
		actions: nextActions.actions.concat(parentNextActions.actions),
		onExit: nextActions.onExit.concat(parentNextActions.onExit)
		}
		: parentNextActions
		: nextActions;
		return {
		stateValue: parentNextValue,
		actions: allActions,
		activities: allActivities
		};
		}
		if (this.parallel) {
		nextStateValue = __assign({}, utils_1.mapValues(this.initialState.value, function (subStateValue) { return [
		subStateValue,
		{ onEntry: [], onExit: [], actions: [] }
		]; }), nextStateValue);
		nextStateValue = __assign({}, utils_1.mapValues(this.initialState.value, function (subStateValue) { return ({
		stateValue: subStateValue,
		actions: { onEntry: [], onExit: [], actions: [] },
		activities: undefined
		}); }), nextStateValue);
		}
		@@ -161,13 +217,19 @@ var finalActions = {
		};
		var finalStateValue = utils_1.mapValues(nextStateValue, function (_a, key) {
		var nextSubStateValue = _a[0], nextSubActions = _a[1];
		if (nextSubActions.onEntry) {
		(_b = finalActions.onEntry).push.apply(_b, nextSubActions.onEntry);
		var finalActivities = {};
		var finalStateValue = utils_1.mapValues(nextStateValue, function (subStateTransition, key) {
		var nextSubStateValue = subStateTransition.stateValue, nextSubActions = subStateTransition.actions, nextSubActivities = subStateTransition.activities;
		if (nextSubActions) {
		if (nextSubActions.onEntry) {
		(_a = finalActions.onEntry).push.apply(_a, nextSubActions.onEntry);
		}
		if (nextSubActions.actions) {
		(_b = finalActions.actions).push.apply(_b, nextSubActions.actions);
		}
		if (nextSubActions.onExit) {
		(_c = finalActions.onExit).push.apply(_c, nextSubActions.onExit);
		}
		}
		if (nextSubActions.actions) {
		(_c = finalActions.actions).push.apply(_c, nextSubActions.actions);
		if (nextSubActivities) {
		Object.assign(finalActivities, nextSubActivities);
		}
		if (nextSubActions.onExit) {
		(_d = finalActions.onExit).push.apply(_d, nextSubActions.onExit);
		}
		if (!nextSubStateValue) {
		@@ -177,15 +239,31 @@ return stateValue[key];
		return nextSubStateValue;
		var _b, _c, _d;
		var _a, _b, _c;
		});
		return [finalStateValue, finalActions];
		return {
		stateValue: finalStateValue,
		actions: finalActions,
		activities: finalActivities
		};
		var _a;
		};
		StateNode.prototype.next = function (event, history, extendedState) {
		var _this = this;
		var eventType = utils_1.getEventType(event);
		var actionMap = { onEntry: [], onExit: [], actions: [] };
		var activityMap = {};
		if (this.onExit) {
		actionMap.onExit = this.onExit;
		}
		if (this.activities) {
		this.activities.forEach(function (activity) {
		activityMap[utils_1.getEventType(activity)] = false;
		actionMap.onExit = actionMap.onExit.concat(actions_1.stop(activity));
		});
		}
		if (!this.on \|\| !this.on[eventType]) {
		return [undefined, actionMap];
		return {
		stateValue: undefined,
		actions: actionMap,
		activities: activityMap
		};
		}
		@@ -198,11 +276,14 @@ var transition = this.on[eventType];
		else {
		for (var _i = 0, _a = Object.keys(transition); _i < _a.length; _i++) {
		var candidate = _a[_i];
		// if (Array.isArray(transition[candidate])) {break;}
		var _b = transition[candidate], cond = _b.cond, transitionActions = _b.actions;
		var candidates = Array.isArray(transition)
		? transition
		: Object.keys(transition).map(function (key) { return (__assign({}, transition[key], { target: key })); });
		for (var _i = 0, candidates_1 = candidates; _i < candidates_1.length; _i++) {
		var candidate = candidates_1[_i];
		var _a = candidate, cond = _a.cond, transitionActions = _a.actions;
		var extendedStateObject = extendedState \|\| {};
		var eventObject = typeof event === 'string' \|\| typeof event === 'number'
		? { type: event }
		: event;
		if (!cond \|\| cond(extendedState, eventObject)) {
		nextStateString = candidate;
		if (!cond \|\| cond(extendedStateObject, eventObject)) {
		nextStateString = candidate.target;
		if (transitionActions) {
		@@ -216,3 +297,7 @@ actionMap.actions = actionMap.actions.concat(transitionActions);
		if (!nextStateString) {
		return [undefined, actionMap];
		return {
		stateValue: undefined,
		actions: actionMap,
		activities: activityMap
		};
		}
		@@ -241,5 +326,10 @@ var nextStatePath = utils_1.toStatePath(nextStateString);
		}
		else if (subPath === NULL_EVENT) {
		actionMap.onExit = [];
		currentState = currentState.states[_this.key];
		return;
		}
		currentState = currentState.states[subPath];
		if (currentState === undefined) {
		throw new Error("Event '" + event + "' on state '" + currentPath + "' leads to undefined state '" + nextStatePath + "'.");
		throw new Error("Event '" + event + "' on state '" + currentPath + "' leads to undefined state '" + nextStatePath.join(STATE_DELIMITER) + "'.");
		}
		@@ -249,2 +339,8 @@ if (currentState.onEntry) {
		}
		if (currentState.activities) {
		currentState.activities.forEach(function (activity) {
		activityMap[utils_1.getEventType(activity)] = true;
		actionMap.onEntry = actionMap.onEntry.concat(actions_1.start(activity));
		});
		}
		currentPath = subPath;
		@@ -266,12 +362,42 @@ if (currentHistory) {
		}
		if (currentState.activities) {
		currentState.activities.forEach(function (activity) {
		activityMap[utils_1.getEventType(activity)] = true;
		actionMap.onEntry = actionMap.onEntry.concat(actions_1.start(activity));
		});
		}
		}
		return [currentState.getRelativeValue(this.parent), actionMap];
		return {
		stateValue: currentState.getRelativeValue(this.parent),
		actions: actionMap,
		activities: activityMap
		};
		};
		Object.defineProperty(StateNode.prototype, "resolvedStateValue", {
		get: function () {
		var key = this.key;
		if (this.parallel) {
		return _a = {},
		_a[key] = utils_1.mapValues(this.states, function (stateNode) { return stateNode.resolvedStateValue[stateNode.key]; }),
		_a;
		}
		if (!this.initial) {
		// If leaf node, value is just the state node's key
		return key;
		}
		return _b = {},
		_b[key] = this.states[this.initial].resolvedStateValue,
		_b;
		var _a, _b;
		},
		enumerable: true,
		configurable: true
		});
		Object.defineProperty(StateNode.prototype, "initialStateValue", {
		get: function () {
		this.__cache.initialState =
		this.__cache.initialState \|\|
		(this.parallel
		? utils_1.mapValues(this.states, function (state) { return state.initialStateValue; })
		: this.initial);
		var initialStateValue = this.__cache.initialState \|\|
		(this.parallel
		? utils_1.mapValues(this.states, function (state) { return state.initialStateValue; })
		: this.resolvedStateValue[this.key]);
		this.__cache.initialState = initialStateValue;
		return this.__cache.initialState;
		@@ -360,3 +486,4 @@ },
		relativeValue = (_b = {},
		_b[currentNode.key] = typeof currentInitialState === 'object' &&
		_b[currentNode.key] = currentNode.parallel &&
		typeof currentInitialState === 'object' &&
		typeof relativeValue === 'object'
		@@ -363,0 +490,0 @@ ? __assign({}, currentInitialState, relativeValue) : relativeValue,

6

lib/State.d.ts

		@@ -1,2 +0,2 @@
		import { StateValue, Action } from './types';
		import { StateValue, Action, ActivityMap } from './types';
		export declare class State {
		@@ -6,6 +6,8 @@ value: StateValue;
		actions: Action[];
		activities: ActivityMap;
		data: Record<string, any>;
		static from(stateValue: State \| StateValue): State;
		static inert(stateValue: State \| StateValue): State;
		constructor(value: StateValue, history?: State \| undefined, actions?: Action[]);
		constructor(value: StateValue, history?: State \| undefined, actions?: Action[], activities?: ActivityMap, data?: Record<string, any>);
		toString(): string \| undefined;
		}

6

lib/State.js

		@@ -6,7 +6,11 @@ "use strict";
		var State = /** @class */ (function () {
		function State(value, history, actions) {
		function State(value, history, actions, activities, data) {
		if (actions === void 0) { actions = []; }
		if (activities === void 0) { activities = constants_1.EMPTY_ACTIVITY_MAP; }
		if (data === void 0) { data = {}; }
		this.value = value;
		this.history = history;
		this.actions = actions;
		this.activities = activities;
		this.data = data;
		}
		@@ -13,0 +17,0 @@ State.from = function (stateValue) {

26

lib/types.d.ts

		@@ -14,2 +14,4 @@ import { StateNode } from './index';
		export declare type Event = EventType \| EventObject;
		export declare type InternalEvent = EventType \| EventObject;
		export declare type Action = ActionType \| ActionObject;
		export declare type StateKey = string \| State;
		@@ -20,3 +22,3 @@ export interface StateValueMap {
		export declare type StateValue = string \| StateValueMap;
		export declare type Condition = (extendedState: any) => boolean;
		export declare type Condition = (extendedState: any, event?: EventObject) => boolean;
		export interface TransitionConfig {
		@@ -30,3 +32,4 @@ cond?: (extendedState: any, event: EventObject) => boolean;
		export declare type ConditionalTransitionConfig = TargetTransitionConfig[];
		export declare type Transition = string \| Record<string, TransitionConfig>;
		export declare type Transition = string \| Record<string, TransitionConfig> \| ConditionalTransitionConfig;
		export declare type Activity = string \| ActionObject;
		export interface StateNodeConfig {
		@@ -40,4 +43,6 @@ key?: string;
		onExit?: Action \| Action[];
		activities?: Activity[];
		parent?: StateNode;
		strict?: boolean \| undefined;
		data?: object \| undefined;
		}
		@@ -66,4 +71,4 @@ export interface SimpleStateNodeConfig extends StateNodeConfig {
		parallel: true;
		states: Record<string, CompoundStateNodeConfig>;
		}
		export declare type Action = string \| ActionObject;
		export interface EntryExitEffectMap {
		@@ -117,2 +122,15 @@ entry: Action[];
		}
		export declare type MaybeStateValueActionsTuple = [StateValue \| undefined, ActionMap];
		export interface ActivityMap {
		[activityKey: string]: boolean;
		}
		export declare type MaybeStateValueActionsTuple = [StateValue \| undefined, ActionMap, ActivityMap \| undefined];
		export interface StateTransition {
		stateValue: StateValue \| undefined;
		actions: ActionMap \| undefined;
		activities: ActivityMap \| undefined;
		}
		export interface TransitionData {
		value: StateValue \| undefined;
		actions: ActionMap;
		activities?: ActivityMap;
		}

2

package.json

		{
		"name": "xstate",
		"version": "3.0.4",
		"version": "3.1.0",
		"description": "Simple JavaScript Finite State Machines and Statecharts",
		@@ -5,0 +5,0 @@ "main": "lib/index.js",

3

src/constants.ts

		@@ -0,1 +1,4 @@
		import { ActivityMap } from './types';

		export const STATE_DELIMITER = '.';
		export const EMPTY_ACTIVITY_MAP: ActivityMap = {};

111

src/graph.ts

		import { StateNode } from './index';
		import { toTrie } from './utils';
		import { Transition, StateValue, Machine, Event } from './types';
		import {
		// Transition,
		StateValue,
		Machine,
		Event,
		// TargetTransitionConfig,
		Condition,
		Action
		} from './types';

		const EMPTY_MAP = {};
		export interface IEdge {
		export interface Edge {
		event: string;
		source: StateNode;
		target: StateNode;
		cond?: Condition;
		actions: Action[];
		}
		export interface INodesAndEdges {
		nodes: StateNode[];
		edges: IEdge[];
		edges: Edge[];
		}
		@@ -31,61 +41,54 @@

		function getTransitionStateKeys(transition: Transition): string[] {
		if (typeof transition === 'string') {
		return [transition];
		function getEventEdges(node: StateNode, event: string): Edge[] {
		const transitions = node.on![event]!;

		if (typeof transitions === 'string') {
		return [
		{
		source: node,
		target: node.parent!.getState(transitions)!,
		event,
		actions: []
		}
		];
		}

		return Object.keys(transition) as string[];
		}

		export function getEdges(
		node: StateNode,
		visited: Record<string, true> = {}
		): IEdge[] {
		const { states } = node;
		visited[node.key] = true;
		const subNodeEdges = Object.keys(states).reduce((_edges: IEdge[], key) => {
		if (visited[key]) {
		return _edges;
		}

		const subState = states[key];
		_edges.push(...getEdges(subState, visited));
		visited[key] = true;
		return _edges;
		}, []);

		if (!node.on) {
		return subNodeEdges;
		if (Array.isArray(transitions)) {
		return transitions.map(transition => {
		return {
		source: node,
		target: node.parent!.getState(transition.target)!,
		event,
		actions: transition.actions \|\| [],
		cond: transition.cond
		};
		});
		}

		const edges = Object.keys(node.on).reduce((accEdges: IEdge[], event) => {
		if (!node.on \|\| !node.parent) {
		return accEdges;
		}
		return Object.keys(transitions).map(stateKey => {
		return {
		source: node,
		target: node.parent!.getState(stateKey)!,
		event,
		actions: transitions[stateKey].actions \|\| [],
		cond: transitions[stateKey].cond
		};
		});
		}

		const { parent } = node;
		export function getEdges(node: StateNode): Edge[] {
		const edges: Edge[] = [];

		const transition = node.on[event];

		if (!transition) {
		return accEdges;
		}

		const subStateKeys = getTransitionStateKeys(transition);
		subStateKeys.forEach(subStateKey => {
		const subNode = parent!.getState(subStateKey) as StateNode;
		const edge: IEdge = { event, source: node, target: subNode };

		accEdges.push(edge);

		if (!visited[subStateKey]) {
		accEdges.push(...getEdges(subNode, visited));
		visited[subStateKey] = true;
		}
		if (node.states) {
		Object.keys(node.states).forEach(stateKey => {
		edges.push(...getEdges(node.states[stateKey]));
		});
		}
		if (node.on) {
		Object.keys(node.on).forEach(event => {
		edges.push(...getEventEdges(node, event));
		});
		}

		return accEdges;
		}, []);

		return subNodeEdges.concat(edges);
		return edges;
		}
		@@ -92,0 +95,0 @@

308

src/index.ts

		@@ -16,5 +16,8 @@ import { getEventType, toStatePath, toTrie, mapValues } from './utils';
		ActionMap,
		MaybeStateValueActionsTuple,
		StandardMachineConfig,
		TransitionConfig
		TransitionConfig,
		ActivityMap,
		StateNodeConfig,
		Activity,
		StateTransition
		} from './types';
		@@ -24,7 +27,8 @@ import matchesState from './matchesState';
		import { State } from './State';
		import { start, stop } from './actions';

		const STATE_DELIMITER = '.';
		const HISTORY_KEY = '$history';

		class StateNode {
		const NULL_EVENT = '';
		class StateNode implements StateNodeConfig {
		public key: string;
		@@ -39,5 +43,7 @@ public id: string;
		public onExit?: Action[];
		public activities?: Activity[];
		public strict: boolean;
		public parent?: StateNode;
		public machine: StateNode;
		public data: object \| undefined;

		@@ -88,2 +94,4 @@ private __cache = {
		: undefined;
		this.data = config.data;
		this.activities = config.activities;
		}
		@@ -108,5 +116,7 @@ public getStateNodes(state: StateValue \| State): StateNode[] {
		subStateKeys
		.map(subStateKey =>
		this.states[subStateKey].getStateNodes(stateValue[subStateKey])
		)
		.map(subStateKey => {
		return this.states[subStateKey].getStateNodes(
		stateValue[subStateKey]
		);
		})
		.reduce((a, b) => a.concat(b))
		@@ -138,4 +148,3 @@ );

		// const stateValue = toTrie(state);
		const [nextStateValue, nextActions] = this.transitionStateValue(
		const stateTransition = this.transitionStateValue(
		state,
		@@ -145,7 +154,47 @@ event,
		);
		const nextState = this.stateTransitionToState(stateTransition, state);

		if (!nextStateValue) {
		if (!nextState) {
		return State.inert(state);
		}

		// Try transitioning from "transient" states from the NULL_EVENT
		// until a state with non-transient transitions is found
		let maybeNextState: State \| undefined = nextState;
		let nextStateFromInternalTransition: State;
		do {
		nextStateFromInternalTransition = maybeNextState;
		maybeNextState = this.stateTransitionToState(
		this.transitionStateValue(
		nextStateFromInternalTransition,
		NULL_EVENT,
		extendedState
		),
		nextStateFromInternalTransition
		);
		} while (maybeNextState);

		// TODO: handle internally raised events

		return nextStateFromInternalTransition;
		}
		private stateTransitionToState(
		stateTransition: StateTransition,
		prevState: StateValue \| State
		): State \| undefined {
		const {
		stateValue: nextStateValue,
		actions: nextActions,
		activities: nextActivities
		} = stateTransition;

		if (!nextStateValue) {
		return undefined;
		}

		const prevActivities =
		prevState instanceof State ? prevState.activities : undefined;

		const activities = { ...prevActivities, ...nextActivities };

		return new State(
		@@ -155,5 +204,19 @@ // next state value
		// history
		State.from(state),
		State.from(prevState),
		// effects
		nextActions.onExit.concat(nextActions.actions).concat(nextActions.onEntry)
		nextActions
		? nextActions.onExit
		.concat(nextActions.actions)
		.concat(nextActions.onEntry)
		: [],
		// activities
		activities,
		// data
		this.getStateNodes(nextStateValue).reduce(
		(data, stateNode) => {
		data[stateNode.id] = stateNode.data;
		return data;
		},
		{} as Record<string, any>
		)
		);
		@@ -165,3 +228,3 @@ }
		extendedState?: any
		): MaybeStateValueActionsTuple {
		): StateTransition {
		const history = state instanceof State ? state.history : undefined;
		@@ -179,6 +242,7 @@ let stateValue = toTrie(state);
		if (subStateNode.states && subStateNode.initial) {
		// Get the initial state value
		const initialStateValue = subStateNode.initialState.value;

		stateValue = { [stateValue]: initialStateValue };
		} else {
		// Transition from the substate
		return subStateNode.next(
		@@ -192,2 +256,5 @@ event,

		// Potential transition tuples from parent state nodes
		const potentialStateTransitions: StateTransition[] = [];

		let nextStateValue = mapValues(stateValue, (subStateValue, subStateKey) => {
		@@ -199,4 +266,4 @@ const subHistory = history ? history.value[subStateKey] : undefined;
		);
		const subStateNode = this.states[subStateKey] as StateNode;
		const nextTuple = subStateNode.transitionStateValue(
		const subStateNode = this.states[subStateKey];
		const subStateTransition = subStateNode.transitionStateValue(
		subState,
		@@ -207,3 +274,13 @@ event,

		return nextTuple;
		if (!subStateTransition.stateValue) {
		potentialStateTransitions.push(
		subStateNode.next(
		event,
		history ? history.value : undefined,
		extendedState
		)
		);
		}

		return subStateTransition;
		});
		@@ -213,7 +290,15 @@
		Array.prototype.every.call(Object.keys(nextStateValue), key => {
		return nextStateValue[key][0] === undefined;
		return nextStateValue[key].stateValue === undefined;
		})
		) {
		if (this.parallel) {
		return [undefined, { onEntry: [], onExit: [], actions: [] }];
		if (potentialStateTransitions.length) {
		return potentialStateTransitions[0];
		}

		return {
		stateValue: undefined,
		actions: { onEntry: [], onExit: [], actions: [] },
		activities: undefined
		};
		}
		@@ -224,15 +309,34 @@
		// try with parent
		const [parentNextValue, parentNextActions] = this.states[
		subStateKey
		].next(event, history ? history.value : undefined);
		const nextActions = nextStateValue[subStateKey][1];
		const {
		stateValue: parentNextValue,
		actions: parentNextActions,
		activities: parentActivities
		} = this.states[subStateKey].next(
		event,
		history ? history.value : undefined,
		extendedState
		);
		const nextActions = nextStateValue[subStateKey].actions;
		const activities = nextStateValue[subStateKey].activities;

		return [
		parentNextValue,
		{
		onEntry: [...nextActions.onEntry, ...parentNextActions.onEntry],
		actions: [...nextActions.actions, ...parentNextActions.actions],
		onExit: [...nextActions.onExit, ...parentNextActions.onExit]
		}
		];
		const allActivities = {
		...activities,
		...parentActivities
		};

		const allActions = parentNextActions
		? nextActions
		? {
		onEntry: [...nextActions.onEntry, ...parentNextActions.onEntry],
		actions: [...nextActions.actions, ...parentNextActions.actions],
		onExit: [...nextActions.onExit, ...parentNextActions.onExit]
		}
		: parentNextActions
		: nextActions;

		return {
		stateValue: parentNextValue,
		actions: allActions,
		activities: allActivities
		};
		}
		@@ -242,6 +346,10 @@
		nextStateValue = {
		...(mapValues(this.initialState.value as {}, subStateValue => [
		subStateValue,
		{ onEntry: [], onExit: [], actions: [] }
		]) as Record<string, MaybeStateValueActionsTuple>),
		...mapValues(
		this.initialState.value as Record<string, StateValue>,
		subStateValue => ({
		stateValue: subStateValue,
		actions: { onEntry: [], onExit: [], actions: [] },
		activities: undefined
		})
		),
		...nextStateValue
		@@ -256,14 +364,25 @@ };
		};
		const finalActivities: ActivityMap = {};
		const finalStateValue = mapValues(
		nextStateValue,
		([nextSubStateValue, nextSubActions], key) => {
		if (nextSubActions.onEntry) {
		finalActions.onEntry.push(...nextSubActions.onEntry);
		(subStateTransition, key) => {
		const {
		stateValue: nextSubStateValue,
		actions: nextSubActions,
		activities: nextSubActivities
		} = subStateTransition;
		if (nextSubActions) {
		if (nextSubActions.onEntry) {
		finalActions.onEntry.push(...nextSubActions.onEntry);
		}
		if (nextSubActions.actions) {
		finalActions.actions.push(...nextSubActions.actions);
		}
		if (nextSubActions.onExit) {
		finalActions.onExit.push(...nextSubActions.onExit);
		}
		}
		if (nextSubActions.actions) {
		finalActions.actions.push(...nextSubActions.actions);
		if (nextSubActivities) {
		Object.assign(finalActivities, nextSubActivities);
		}
		if (nextSubActions.onExit) {
		finalActions.onExit.push(...nextSubActions.onExit);
		}

		@@ -278,3 +397,7 @@ if (!nextSubStateValue) {

		return [finalStateValue, finalActions];
		return {
		stateValue: finalStateValue,
		actions: finalActions,
		activities: finalActivities
		};
		}
		@@ -286,5 +409,6 @@
		extendedState?: any
		): MaybeStateValueActionsTuple {
		): StateTransition {
		const eventType = getEventType(event);
		const actionMap: ActionMap = { onEntry: [], onExit: [], actions: [] };
		const activityMap: ActivityMap = {};

		@@ -294,5 +418,15 @@ if (this.onExit) {
		}
		if (this.activities) {
		this.activities.forEach(activity => {
		activityMap[getEventType(activity)] = false;
		actionMap.onExit = actionMap.onExit.concat(stop(activity));
		});
		}

		if (!this.on \|\| !this.on[eventType]) {
		return [undefined, actionMap];
		return {
		stateValue: undefined,
		actions: actionMap,
		activities: activityMap
		};
		}
		@@ -306,7 +440,15 @@
		} else {
		for (const candidate of Object.keys(transition)) {
		// if (Array.isArray(transition[candidate])) {break;}
		const { cond, actions: transitionActions } = transition[
		candidate
		] as TransitionConfig;
		const candidates = Array.isArray(transition)
		? transition
		: Object.keys(transition).map(key => ({
		...transition[key],
		target: key
		}));

		for (const candidate of candidates) {
		const {
		cond,
		actions: transitionActions
		} = candidate as TransitionConfig;
		const extendedStateObject = extendedState \|\| {};
		const eventObject: EventObject =
		@@ -316,4 +458,4 @@ typeof event === 'string' \|\| typeof event === 'number'
		: event;
		if (!cond \|\| cond(extendedState, eventObject)) {
		nextStateString = candidate;
		if (!cond \|\| cond(extendedStateObject, eventObject)) {
		nextStateString = candidate.target;
		if (transitionActions) {
		@@ -328,3 +470,7 @@ actionMap.actions = actionMap.actions.concat(transitionActions);
		if (!nextStateString) {
		return [undefined, actionMap];
		return {
		stateValue: undefined,
		actions: actionMap,
		activities: activityMap
		};
		}
		@@ -355,2 +501,6 @@
		}
		} else if (subPath === NULL_EVENT) {
		actionMap.onExit = [];
		currentState = currentState.states[this.key];
		return;
		}
		@@ -362,3 +512,5 @@
		throw new Error(
		`Event '${event}' on state '${currentPath}' leads to undefined state '${nextStatePath}'.`
		`Event '${event}' on state '${currentPath}' leads to undefined state '${nextStatePath.join(
		STATE_DELIMITER
		)}'.`
		);
		@@ -370,2 +522,8 @@ }
		}
		if (currentState.activities) {
		currentState.activities.forEach(activity => {
		activityMap[getEventType(activity)] = true;
		actionMap.onEntry = actionMap.onEntry.concat(start(activity));
		});
		}

		@@ -392,8 +550,39 @@ currentPath = subPath;
		}
		if (currentState.activities) {
		currentState.activities.forEach(activity => {
		activityMap[getEventType(activity)] = true;
		actionMap.onEntry = actionMap.onEntry.concat(start(activity));
		});
		}
		}

		return [currentState.getRelativeValue(this.parent), actionMap];
		return {
		stateValue: currentState.getRelativeValue(this.parent),
		actions: actionMap,
		activities: activityMap
		};
		}
		private get resolvedStateValue(): StateValue {
		const { key } = this;

		if (this.parallel) {
		return {
		[key]: mapValues(
		this.states,
		stateNode => stateNode.resolvedStateValue[stateNode.key]
		)
		};
		}

		if (!this.initial) {
		// If leaf node, value is just the state node's key
		return key;
		}

		return {
		[key]: this.states[this.initial].resolvedStateValue
		};
		}
		private get initialStateValue(): StateValue \| undefined {
		this.__cache.initialState =
		const initialStateValue =
		this.__cache.initialState \|\|
		@@ -405,4 +594,6 @@ ((this.parallel
		)
		: this.initial) as StateValue);
		: this.resolvedStateValue[this.key]) as StateValue);

		this.__cache.initialState = initialStateValue;

		return this.__cache.initialState;
		@@ -502,2 +693,3 @@ }
		[currentNode.key]:
		currentNode.parallel &&
		typeof currentInitialState === 'object' &&
		@@ -504,0 +696,0 @@ typeof relativeValue === 'object'

9

src/State.ts

		@@ -1,3 +0,3 @@
		import { StateValue, Action } from './types';
		import { STATE_DELIMITER } from './constants';
		import { StateValue, Action, ActivityMap } from './types';
		import { STATE_DELIMITER, EMPTY_ACTIVITY_MAP } from './constants';
		import { toTrie } from './utils';
		@@ -23,6 +23,9 @@
		}

		constructor(
		public value: StateValue,
		public history?: State,
		public actions: Action[] = []
		public actions: Action[] = [],
		public activities: ActivityMap = EMPTY_ACTIVITY_MAP,
		public data: Record<string, any> = {}
		) {}
		@@ -29,0 +32,0 @@ public toString(): string \| undefined {

37

src/types.ts

		@@ -17,2 +17,4 @@ import { StateNode } from './index';
		export type Event = EventType \| EventObject;
		export type InternalEvent = EventType \| EventObject;
		export type Action = ActionType \| ActionObject;
		export type StateKey = string \| State;
		@@ -26,3 +28,3 @@

		export type Condition = (extendedState: any) => boolean;
		export type Condition = (extendedState: any, event?: EventObject) => boolean;

		@@ -40,4 +42,9 @@ export interface TransitionConfig {

		export type Transition = string \| Record<string, TransitionConfig>;
		export type Transition =
		\| string
		\| Record<string, TransitionConfig>
		\| ConditionalTransitionConfig;

		export type Activity = string \| ActionObject;

		export interface StateNodeConfig {
		@@ -51,4 +58,6 @@ key?: string;
		onExit?: Action \| Action[];
		activities?: Activity[];
		parent?: StateNode;
		strict?: boolean \| undefined;
		data?: object \| undefined;
		}
		@@ -83,5 +92,5 @@ export interface SimpleStateNodeConfig extends StateNodeConfig {
		parallel: true;
		states: Record<string, CompoundStateNodeConfig>;
		}

		export type Action = string \| ActionObject;
		export interface EntryExitEffectMap {
		@@ -141,2 +150,22 @@ entry: Action[];
		}
		export type MaybeStateValueActionsTuple = [StateValue \| undefined, ActionMap];

		export interface ActivityMap {
		[activityKey: string]: boolean;
		}
		export type MaybeStateValueActionsTuple = [
		StateValue \| undefined,
		ActionMap,
		ActivityMap \| undefined
		];

		export interface StateTransition {
		stateValue: StateValue \| undefined;
		actions: ActionMap \| undefined;
		activities: ActivityMap \| undefined;
		}

		export interface TransitionData {
		value: StateValue \| undefined;
		actions: ActionMap;
		activities?: ActivityMap;
		}

69

test/graph.test.ts

		@@ -22,3 +22,7 @@ import { assert } from 'chai';
		on: {
		PED_COUNTDOWN: 'wait'
		PED_COUNTDOWN: {
		wait: {
		actions: ['startCountdown']
		}
		}
		}
		@@ -136,15 +140,27 @@ },
		);
		assert.deepEqual(
		assert.sameDeepMembers(
		edges.map(edge => ({
		event: edge.event,
		source: edge.source.id,
		target: edge.target.id
		target: edge.target.id,
		actions: edge.actions
		})),
		[
		{ event: 'TIMER', source: 'light.green', target: 'light.yellow' },
		{ event: 'TIMER', source: 'light.yellow', target: 'light.red' },
		{
		event: 'TIMER',
		source: 'light.green',
		target: 'light.yellow',
		actions: []
		},
		{
		event: 'TIMER',
		source: 'light.yellow',
		target: 'light.red',
		actions: []
		},
		{
		event: 'PED_COUNTDOWN',
		source: 'light.red.walk',
		target: 'light.red.wait'
		target: 'light.red.wait',
		actions: ['startCountdown']
		},
		@@ -154,9 +170,16 @@ {
		source: 'light.red.wait',
		target: 'light.red.stop'
		target: 'light.red.stop',
		actions: []
		},
		{ event: 'TIMER', source: 'light.red', target: 'light.green' },
		{
		event: 'TIMER',
		source: 'light.red',
		target: 'light.green',
		actions: []
		},
		{
		event: 'POWER_OUTAGE',
		source: 'light.red',
		target: 'light.red.flashing'
		target: 'light.red.flashing',
		actions: []
		},
		@@ -166,3 +189,4 @@ {
		source: 'light.yellow',
		target: 'light.red.flashing'
		target: 'light.red.flashing',
		actions: []
		},
		@@ -172,3 +196,4 @@ {
		source: 'light.green',
		target: 'light.red.flashing'
		target: 'light.red.flashing',
		actions: []
		}
		@@ -190,3 +215,3 @@ ]
		);
		assert.deepEqual(
		assert.sameDeepMembers(
		edges.map(edge => ({
		@@ -324,2 +349,22 @@ event: edge.event,
		});

		it('should not throw when a condition is present', () => {
		const condMachine = Machine({
		initial: 'a',
		states: {
		a: {
		on: {
		NEXT: {
		b: {
		cond: payload => payload.foo
		}
		}
		}
		},
		b: {}
		}
		});

		assert.doesNotThrow(() => getShortestPaths(condMachine));
		});
		});
		@@ -326,0 +371,0 @@

2

test/matches-state.test.ts

		@@ -82,4 +82,4 @@ import { assert } from 'chai';
		it('should mix/match string state values and object state values', () => {
		assert.ok(matchesState('a.b.c', {a: {b: 'c'}}));
		assert.ok(matchesState('a.b.c', { a: { b: 'c' } }));
		});
		});

6

test/parallel.test.ts

		@@ -106,5 +106,5 @@ import { assert } from 'chai';

		it(`should go from ${fromState} to ${JSON.stringify(
		toState
		)} on ${eventTypes}`, () => {
		it(`should go from ${fromState} to ${JSON.stringify(toState)} on ${
		eventTypes
		}`, () => {
		const resultState = testMultiTransition(
		@@ -111,0 +111,0 @@ wordMachine,

3

tslint.json

		@@ -14,3 +14,4 @@ {
		"interface-name": false,
		"member-ordering": false
		"member-ordering": false,
		"no-namespace": false
		},
		@@ -17,0 +18,0 @@ "rulesDirectory": [],

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