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3 lines
2.7 KiB
JavaScript
3 lines
2.7 KiB
JavaScript
var v=function(...t){return{states:t}},y=function(t,...e){return{name:t,eventReactionCouplings:e}},P=function(t,...e){return{eventName:t,reactions:e}},I=function(t){return{type:"SideEffect",fn:t}},M=function(t){return{type:"Goto",targetStateName:t}},h=function(t){return{type:"ContextMutation",fn:t}},F=function(t,e){return{type:"Peering",name:t,peerCreationFunction:e}};function R(t,e,n){typeof n>"u"&&(n=t.states[0].name);let o={machine:t,state:n,context:e,eventQueue:[],isTransitioning:!1,peers:{},peerSubscriptionIds:new Map,subscriptionsToEvents:{},subscriptionsToState:{},subscriptionsToSettledState:{},isPaused:!0};return o.start=()=>(f(o),o),c(o,["entry",null]),o}function f(t){t.isPaused===!0&&(t.isPaused=!1,C(t))}function k(t){t.isPaused===!1&&(t.isPaused=!0)}function l(t){return t.machine.states.find(e=>e.name===t.state)}function S(t,e){return t.eventReactionCouplings.filter(n=>n.eventName===e[0])}function c(t,e){t.eventQueue.push(e),t.isTransitioning===!1&&C(t)}var A=c;function C(t){for(t.isTransitioning=!0;t.eventQueue.length>0&&t.isPaused===!1;)g(t);t.isTransitioning=!1,Object.values(t.subscriptionsToSettledState).forEach(e=>{e(t)})}function g(t){let e=t.eventQueue.shift();if(typeof e<"u"){let n=l(t),a=S(n,e).map(i=>i.reactions).flat(),{sideEffects:r,contextMutations:T,peerings:p,goto_:u}=x(a),_=t.context;T.forEach(i=>{t.context=i.fn(t.context,e,t)}),u!==null&&(c(t,["exit",null]),t.state=u.targetStateName,Object.values(t.subscriptionsToState).forEach(i=>{i(e,t)}),c(t,["entry",null])),p.forEach(i=>{E(t,i.name,i.peerCreationFunction(t.context,e,t))}),Object.values(t.subscriptionsToEvents).forEach(i=>{i(e,t)}),r.forEach(i=>{i.fn(t.context,e,t,_)})}}function x(t){let e=[],n=[],o=[],a=null;return t.forEach(r=>{r.type==="SideEffect"?e.push(r):r.type==="ContextMutation"?n.push(r):r.type==="Peering"?o.push(r):r.type==="Goto"&&(a=r)}),{sideEffects:e,contextMutations:n,peerings:o,goto_:a}}var s=0;function d(t,e){return s++,t.subscriptionsToSettledState[s.toString()]=e,s.toString()}var m=d;function G(t,e){return s++,t.subscriptionsToState[s.toString()]=e,s.toString()}function b(t,e){return s++,t.subscriptionsToEvents[s.toString()]=e,s.toString()}function w(t,e){delete t.subscriptionsToSettledState[e.toString()],delete t.subscriptionsToState[e.toString()],delete t.subscriptionsToEvents[e.toString()]}function E(t,e,n){t.peers[e]=n,b(n,(o,a)=>{t.isTransitioning===!1&&c(t,[e+"."+o[0],o[1]])})}export{h as Context,M as Goto,R as Interpreter,v as Machine,P as On,F as Peer,I as SideEffect,y as State,E as addPeer,A as enqueue,k as pause,c as send,f as start,d as subscribe,b as subscribeToEvents,m as subscribeToSettledState,G as subscribeToState,w as unsubscribe};
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