event-storm
Version:
In memory event store
2 lines (1 loc) • 14.1 kB
JavaScript
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t(n,pt),!e.size&&e.add("default",t),e.forEach((e=>{o[e]=o[e]||[],o[e].push(t)})),()=>{e.forEach((e=>{o[e]=o[e].filter((e=>e!==t))}))}},addMiddleware:t=>(a.push(t),()=>{a=a.filter((e=>e!==t))}),dispatch:(t,u)=>{let c;const s=n(t)?t(r):t,f=ct(r,(t=>{c=bt(t,s,{...e,...u||{}})})),l=[f,r];!i(u)&&l.push(u),a.forEach((t=>t(...l))),r=f,c.forEach((t=>{o[t]&&o[t].forEach((t=>{t(r,ft)}))})),o.default?.forEach((t=>t(r,ft)))}}},exports.createVirtualModel=({models:r=[],handler:n,...o}={})=>{const i=e({options:o});i.options.handler=n,i.options.models=r;const a=()=>i.options.models.map((t=>t.getState())),u=t=>{const e=i.options.handler(...a()),{lastState:r}=i;i.lastState=e,i.subscribers.forEach((({callback:n})=>i.options.fireDuplicates||e!==r?n(e,t):void 0))};let c=r.map((t=>t.subscribe(((t,e)=>u(e))))),s=!1;return{getState:()=>((s||i.lastState===t)&&(i.lastState=i.options.handler(...a())),i.lastState),subscribe:function(t,e={}){return e.needPrevious&&t(this.getState()),!i.subscribers.some((e=>e.callback===t))&&i.subscribers.push({callback:t}),()=>{i.subscribers=i.subscribers.filter((e=>e.callback!==t))}},setOptions:({models:t,handler:e=i.options.handler,...r})=>{i.options={...i.options,...r,handler:e},t&&(c.map((t=>t())),i.options.models=t,c=t.map((t=>t.subscribe(((t,e)=>u(e))))),s=!0),i.options.models.forEach((t=>{t.setOptions(r)}))}}},exports.persisted=t=>({storageKey:e,beforeunload:n=r,permanent:o=!1})=>r=>{let i;try{const t=o?window.localStorage:window.sessionStorage;i=JSON.parse(t.getItem(e))}catch{i={}}const a=t({...r,...i});return window.addEventListener("beforeunload",(()=>{try{(o?window.localStorage:window.sessionStorage).setItem(e,JSON.stringify(n(a.getState())))}catch{}})),a};