xstate/actions/dist/xstate-actions.umd.min.js

Finite State Machines and Statecharts for the Modern Web.

!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((t="undefined"!=typeof globalThis?globalThis:t||self).XStateActions={})}(this,(function(t){"use strict";class e{constructor(t){this._process=t,this._active=!1,this._current=null,this._last=null}start(){this._active=!0,this.flush()}clear(){this._current&&(this._current.next=null,this._last=this._current)}enqueue(t){const e={value:t,next:null};if(this._current)return this._last.next=e,void(this._last=e);this._current=e,this._last=e,this._active&&this.flush()}flush(){for(;this._current;){const t=this._current;this._process(t.value),this._current=t.next}this._last=null}}const s="xstate.stop";function n(){const t="undefined"!=typeof globalThis?globalThis:"undefined"!=typeof self?self:window;if(t.__xstate__)return t.__xstate__}const o=t=>{const e=n();e&&e.register(t)};function i(t,e){return{type:`xstate.error.actor.${t}`,error:e,actorId:t}}function r(t){setTimeout((()=>{throw t}))}const c="function"==typeof Symbol&&Symbol.observable||"@@observable";function a(t,e){const s=u(t),n=u(e);return"string"==typeof n?"string"==typeof s&&n===s:"string"==typeof s?s in n:Object.keys(s).every((t=>t in n&&a(s[t],n[t])))}function h(t){if(e=t,Array.isArray(e))return t;var e;const s=[];let n="";for(let e=0;e<t.length;e++){switch(t.charCodeAt(e)){case 92:n+=t[e+1],e++;continue;case 46:s.push(n),n="";continue}n+=t[e]}return s.push(n),s}function u(t){if((e=t)&&"object"==typeof e&&"machine"in e&&"value"in e)return t.value;var e;if("string"!=typeof t)return t;return function(t){if(1===t.length)return t[0];const e={};let s=e;for(let e=0;e<t.length-1;e++)if(e===t.length-2)s[t[e]]=t[e+1];else{const n=s;s={},n[t[e]]=s}return e}(h(t))}function d(t,e,s){const n="object"==typeof t,o=n?t:void 0;return{next:(n?t.next:t)?.bind(o),error:(n?t.error:e)?.bind(o),complete:(n?t.complete:s)?.bind(o)}}function p(t,e){const s=e.match(/^xstate\.invoke\.(\d+)\.(.*)/);if(!s)return t.implementations.actors[e];const[,n,o]=s,i=t.getStateNodeById(o).config.invoke;return(Array.isArray(i)?i[n]:i).src}function l(t,e){return`${t.sessionId}.${e}`}let f=0;let y=!1;let _=function(t){return t[t.NotStarted=0]="NotStarted",t[t.Running=1]="Running",t[t.Stopped=2]="Stopped",t}({});const v={clock:{setTimeout:(t,e)=>setTimeout(t,e),clearTimeout:t=>clearTimeout(t)},logger:console.log.bind(console),devTools:!1};class g{constructor(t,s){this.logic=t,this._snapshot=void 0,this.clock=void 0,this.options=void 0,this.id=void 0,this.mailbox=new e(this._process.bind(this)),this.observers=new Set,this.eventListeners=new Map,this.logger=void 0,this._processingStatus=_.NotStarted,this._parent=void 0,this._syncSnapshot=void 0,this.ref=void 0,this._actorScope=void 0,this._systemId=void 0,this.sessionId=void 0,this.system=void 0,this._doneEvent=void 0,this.src=void 0,this._deferred=[];const n={...v,...s},{clock:o,logger:i,parent:r,syncSnapshot:c,id:a,systemId:h,inspect:u}=n;this.system=r?r.system:function(t,e){const s=new Map,n=new Map,o=new WeakMap,i=new Set,r={},{clock:c,logger:a}=e,h={schedule:(t,e,s,n,o=Math.random().toString(36).slice(2))=>{const i={source:t,target:e,event:s,delay:n,id:o,startedAt:Date.now()},a=l(t,o);u._snapshot._scheduledEvents[a]=i;const h=c.setTimeout((()=>{delete r[a],delete u._snapshot._scheduledEvents[a],u._relay(t,e,s)}),n);r[a]=h},cancel:(t,e)=>{const s=l(t,e),n=r[s];delete r[s],delete u._snapshot._scheduledEvents[s],void 0!==n&&c.clearTimeout(n)},cancelAll:t=>{for(const e in u._snapshot._scheduledEvents){const s=u._snapshot._scheduledEvents[e];s.source===t&&h.cancel(t,s.id)}}},u={_snapshot:{_scheduledEvents:(e?.snapshot&&e.snapshot.scheduler)??{}},_bookId:()=>"x:"+f++,_register:(t,e)=>(s.set(t,e),t),_unregister:t=>{s.delete(t.sessionId);const e=o.get(t);void 0!==e&&(n.delete(e),o.delete(t))},get:t=>n.get(t),_set:(t,e)=>{const s=n.get(t);if(s&&s!==e)throw new Error(`Actor with system ID '${t}' already exists.`);n.set(t,e),o.set(e,t)},inspect:t=>{const e=d(t);return i.add(e),{unsubscribe(){i.delete(e)}}},_sendInspectionEvent:e=>{if(!i.size)return;const s={...e,rootId:t.sessionId};i.forEach((t=>t.next?.(s)))},_relay:(t,e,s)=>{u._sendInspectionEvent({type:"@xstate.event",sourceRef:t,actorRef:e,event:s}),e._send(s)},scheduler:h,getSnapshot:()=>({_scheduledEvents:{...u._snapshot._scheduledEvents}}),start:()=>{const t=u._snapshot._scheduledEvents;u._snapshot._scheduledEvents={};for(const e in t){const{source:s,target:n,event:o,delay:i,id:r}=t[e];h.schedule(s,n,o,i,r)}},_clock:c,_logger:a};return u}(this,{clock:o,logger:i}),u&&!r&&this.system.inspect(d(u)),this.sessionId=this.system._bookId(),this.id=a??this.sessionId,this.logger=s?.logger??this.system._logger,this.clock=s?.clock??this.system._clock,this._parent=r,this._syncSnapshot=c,this.options=n,this.src=n.src??t,this.ref=this,this._actorScope={self:this,id:this.id,sessionId:this.sessionId,logger:this.logger,defer:t=>{this._deferred.push(t)},system:this.system,stopChild:t=>{if(t._parent!==this)throw new Error(`Cannot stop child actor ${t.id} of ${this.id} because it is not a child`);t._stop()},emit:t=>{const e=this.eventListeners.get(t.type),s=this.eventListeners.get("*");if(!e&&!s)return;const n=[...e?e.values():[],...s?s.values():[]];for(const e of n)e(t)},actionExecutor:t=>{const e=()=>{if(this._actorScope.system._sendInspectionEvent({type:"@xstate.action",actorRef:this,action:{type:t.type,params:t.params}}),!t.exec)return;const e=y;try{y=!0,t.exec(t.info,t.params)}finally{y=e}};this._processingStatus===_.Running?e():this._deferred.push(e)}},this.send=this.send.bind(this),this.system._sendInspectionEvent({type:"@xstate.actor",actorRef:this}),h&&(this._systemId=h,this.system._set(h,this)),this._initState(s?.snapshot??s?.state),h&&"active"!==this._snapshot.status&&this.system._unregister(this)}_initState(t){try{this._snapshot=t?this.logic.restoreSnapshot?this.logic.restoreSnapshot(t,this._actorScope):t:this.logic.getInitialSnapshot(this._actorScope,this.options?.input)}catch(t){this._snapshot={status:"error",output:void 0,error:t}}}update(t,e){let s;for(this._snapshot=t;s=this._deferred.shift();)try{s()}catch(e){this._deferred.length=0,this._snapshot={...t,status:"error",error:e}}switch(this._snapshot.status){case"active":for(const e of this.observers)try{e.next?.(t)}catch(t){r(t)}break;case"done":for(const e of this.observers)try{e.next?.(t)}catch(t){r(t)}this._stopProcedure(),this._complete(),this._doneEvent=(n=this.id,o=this._snapshot.output,{type:`xstate.done.actor.${n}`,output:o,actorId:n}),this._parent&&this.system._relay(this,this._parent,this._doneEvent);break;case"error":this._error(this._snapshot.error)}var n,o;this.system._sendInspectionEvent({type:"@xstate.snapshot",actorRef:this,event:e,snapshot:t})}subscribe(t,e,s){const n=d(t,e,s);if(this._processingStatus!==_.Stopped)this.observers.add(n);else switch(this._snapshot.status){case"done":try{n.complete?.()}catch(t){r(t)}break;case"error":{const t=this._snapshot.error;if(n.error)try{n.error(t)}catch(t){r(t)}else r(t);break}}return{unsubscribe:()=>{this.observers.delete(n)}}}on(t,e){let s=this.eventListeners.get(t);s||(s=new Set,this.eventListeners.set(t,s));const n=e.bind(void 0);return s.add(n),{unsubscribe:()=>{s.delete(n)}}}start(){if(this._processingStatus===_.Running)return this;this._syncSnapshot&&this.subscribe({next:t=>{"active"===t.status&&this.system._relay(this,this._parent,{type:`xstate.snapshot.${this.id}`,snapshot:t})},error:()=>{}}),this.system._register(this.sessionId,this),this._systemId&&this.system._set(this._systemId,this),this._processingStatus=_.Running;const t={type:"xstate.init",input:this.options.input};this.system._sendInspectionEvent({type:"@xstate.event",sourceRef:this._parent,actorRef:this,event:t});switch(this._snapshot.status){case"done":return this.update(this._snapshot,t),this;case"error":return this._error(this._snapshot.error),this}if(this._parent||this.system.start(),this.logic.start)try{this.logic.start(this._snapshot,this._actorScope)}catch(t){return this._snapshot={...this._snapshot,status:"error",error:t},this._error(t),this}return this.update(this._snapshot,t),this.options.devTools&&this.attachDevTools(),this.mailbox.start(),this}_process(t){let e,n;try{e=this.logic.transition(this._snapshot,t,this._actorScope)}catch(t){n={err:t}}if(n){const{err:t}=n;return this._snapshot={...this._snapshot,status:"error",error:t},void this._error(t)}this.update(e,t),t.type===s&&(this._stopProcedure(),this._complete())}_stop(){return this._processingStatus===_.Stopped?this:(this.mailbox.clear(),this._processingStatus===_.NotStarted?(this._processingStatus=_.Stopped,this):(this.mailbox.enqueue({type:s}),this))}stop(){if(this._parent)throw new Error("A non-root actor cannot be stopped directly.");return this._stop()}_complete(){for(const t of this.observers)try{t.complete?.()}catch(t){r(t)}this.observers.clear()}_reportError(t){if(!this.observers.size)return void(this._parent||r(t));let e=!1;for(const s of this.observers){const n=s.error;e||=!n;try{n?.(t)}catch(t){r(t)}}this.observers.clear(),e&&r(t)}_error(t){this._stopProcedure(),this._reportError(t),this._parent&&this.system._relay(this,this._parent,i(this.id,t))}_stopProcedure(){return this._processingStatus!==_.Running||(this.system.scheduler.cancelAll(this),this.mailbox.clear(),this.mailbox=new e(this._process.bind(this)),this._processingStatus=_.Stopped,this.system._unregister(this)),this}_send(t){this._processingStatus!==_.Stopped&&this.mailbox.enqueue(t)}send(t){this.system._relay(void 0,this,t)}attachDevTools(){const{devTools:t}=this.options;if(t){("function"==typeof t?t:o)(this)}}toJSON(){return{xstate$$type:1,id:this.id}}getPersistedSnapshot(t){return this.logic.getPersistedSnapshot(this._snapshot,t)}[c](){return this}getSnapshot(){return this._snapshot}}function m(t,...[e]){return new g(t,e)}function x(t,e,s,n,{sendId:o}){return[e,{sendId:"function"==typeof o?o(s,n):o},void 0]}function b(t,e){t.defer((()=>{t.system.scheduler.cancel(t.self,e.sendId)}))}function S(t){function e(t,e){}return e.type="xstate.cancel",e.sendId=t,e.resolve=x,e.execute=b,e}function w(t,e,s,n,{id:o,systemId:i,src:r,input:c,syncSnapshot:a}){const h="string"==typeof 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