@electric-sql/client/dist/index.browser.mjs

Postgres everywhere - your data, in sync, wherever you need it.

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s=BigInt(t.xmax),a=BigInt(t.database_lsn);this.activeSnapshots.set(t.snapshot_mark,{xmin:BigInt(t.xmin),xmax:s,xip_list:t.xip_list.map(BigInt),keys:e,databaseLsn:a}),p(this,I,ws).call(this,this.xmaxSnapshots,s,t.snapshot_mark),p(this,I,ws).call(this,this.snapshotsByDatabaseLsn,a,t.snapshot_mark)}removeSnapshot(t){p(this,I,Rs).call(this,t),this.activeSnapshots.delete(t)}shouldRejectMessage(t){let e=t.headers.txids||[];if(e.length===0)return!1;let s=Math.max(...e);for(let[a,o]of this.xmaxSnapshots.entries())if(s>=a)for(let i of o)this.removeSnapshot(i);return[...this.activeSnapshots.values()].some(a=>a.keys.has(t.key)&&os(s,a))}lastSeenUpdate(t){for(let[e,s]of this.snapshotsByDatabaseLsn.entries())if(e<=t)for(let a of s)this.removeSnapshot(a)}};I=new WeakSet,Rs=function(t){let e=this.activeSnapshots.get(t);e&&(p(this,I,xs).call(this,this.xmaxSnapshots,e.xmax,t),p(this,I,xs).call(this,this.snapshotsByDatabaseLsn,e.databaseLsn,t))},ws=function(t,e,s){let a=t.get(e);a?a.add(s):t.set(e,new Set([s]))},xs=function(t,e,s){let a=t.get(e);a&&(a.delete(s),a.size===0&&t.delete(e))};var ot=class{get isUpToDate(){return!1}get staleCacheBuster(){}get staleCacheRetryCount(){return 0}get sseFallbackToLongPolling(){return!1}get consecutiveShortSseConnections(){return 0}get replayCursor(){}canEnterReplayMode(){return!1}enterReplayMode(t){return this}shouldUseSse(t){return!1}handleSseConnectionClosed(t){return{state:this,fellBackToLongPolling:!1,wasShortConnection:!1}}applyUrlParams(t,e){}handleResponseMetadata(t){return{action:"ignored",state:this}}handleMessageBatch(t){return{state:this,suppressBatch:!1,becameUpToDate:!1}}pause(){return new ht(this)}toErrorState(t){return new ke(this,t)}markMustRefetch(t){return new Ft({handle:t,offset:"-1",liveCacheBuster:"",lastSyncedAt:this.lastSyncedAt,schema:void 0})}},v,it=class extends ot{constructor(e){super();f(this,v);h(this,v,e)}get handle(){return r(this,v).handle}get offset(){return r(this,v).offset}get schema(){return r(this,v).schema}get liveCacheBuster(){return r(this,v).liveCacheBuster}get lastSyncedAt(){return r(this,v).lastSyncedAt}get currentFields(){return r(this,v)}applyUrlParams(e,s){e.searchParams.set(de,r(this,v).offset),r(this,v).handle&&e.searchParams.set(he,r(this,v).handle)}parseResponseFields(e){var u,d,S;let s=e.responseHandle,a=s&&s!==e.expiredHandle?s:r(this,v).handle,o=(u=e.responseOffset)!=null?u:r(this,v).offset,i=(d=e.responseCursor)!=null?d:r(this,v).liveCacheBuster,c=(S=r(this,v).schema)!=null?S:e.responseSchema,l=e.status===204?e.now:r(this,v).lastSyncedAt;return{handle:a,offset:o,schema:c,liveCacheBuster:i,lastSyncedAt:l}}checkStaleResponse(e){let s=e.responseHandle,a=e.expiredHandle;if(!s||s!==a)return null;let o=this.staleCacheRetryCount+1;return{action:"stale-retry",state:new Ts(_(E({},this.currentFields),{staleCacheBuster:e.createCacheBuster(),staleCacheRetryCount:o})),exceededMaxRetries:o>e.maxStaleCacheRetries}}handleMessageBatch(e){if(!e.hasMessages||!e.hasUpToDateMessage)return{state:this,suppressBatch:!1,becameUpToDate:!1};let s=r(this,v).offset;e.isSse&&e.upToDateOffset&&(s=e.upToDateOffset);let a={handle:r(this,v).handle,offset:s,schema:r(this,v).schema,liveCacheBuster:r(this,v).liveCacheBuster,lastSyncedAt:e.now};return this.onUpToDate(a,e)}onUpToDate(e,s){return{state:new lt(e),suppressBatch:!1,becameUpToDate:!0}}};v=new WeakMap;var ct=class extends it{handleResponseMetadata(t){let e=this.checkStaleResponse(t);if(e)return e;let s=this.parseResponseFields(t);return t.status===204?{action:"accepted",state:new lt(s,{sseFallbackToLongPolling:!0})}:{action:"accepted",state:new vs(s)}}canEnterReplayMode(){return!0}enterReplayMode(t){return new Cs(_(E({},this.currentFields),{replayCursor:t}))}},Ft=class n extends ct{constructor(e){super(e);this.kind="initial"}withHandle(e){return new n(_(E({},this.currentFields),{handle:e}))}},vs=class n extends ct{constructor(e){super(e);this.kind="syncing"}withHandle(e){return new n(_(E({},this.currentFields),{handle:e}))}},pe,Me,As=class As extends ct{constructor(e){let i=e,{staleCacheBuster:s,staleCacheRetryCount:a}=i,o=Ke(i,["staleCacheBuster","staleCacheRetryCount"]);super(o);this.kind="stale-retry";f(this,pe);f(this,Me);h(this,pe,s),h(this,Me,a)}get staleCacheBuster(){return r(this,pe)}get staleCacheRetryCount(){return r(this,Me)}canEnterReplayMode(){return!1}withHandle(e){return new As(_(E({},this.currentFields),{handle:e,staleCacheBuster:r(this,pe),staleCacheRetryCount:r(this,Me)}))}applyUrlParams(e,s){super.applyUrlParams(e,s),e.searchParams.set(ue,r(this,pe))}};pe=new WeakMap,Me=new WeakMap;var Ts=As,me,Z,_e=class _e extends it{constructor(e,s){var a,o;super(e);this.kind="live";f(this,me);f(this,Z);h(this,me,(a=s==null?void 0:s.consecutiveShortSseConnections)!=null?a:0),h(this,Z,(o=s==null?void 0:s.sseFallbackToLongPolling)!=null?o:!1)}get isUpToDate(){return!0}get consecutiveShortSseConnections(){return r(this,me)}get sseFallbackToLongPolling(){return r(this,Z)}withHandle(e){return new _e(_(E({},this.currentFields),{handle:e}),this.sseState)}applyUrlParams(e,s){super.applyUrlParams(e,s),s.isSnapshotRequest||(e.searchParams.set(Je,this.liveCacheBuster),s.canLongPoll&&e.searchParams.set($,"true"))}get sseState(){return{consecutiveShortSseConnections:r(this,me),sseFallbackToLongPolling:r(this,Z)}}handleResponseMetadata(e){let s=this.checkStaleResponse(e);if(s)return s;let a=this.parseResponseFields(e);return{action:"accepted",state:new _e(a,this.sseState)}}onUpToDate(e,s){return{state:new _e(e,this.sseState),suppressBatch:!1,becameUpToDate:!0}}shouldUseSse(e){return e.liveSseEnabled&&!e.isRefreshing&&!e.resumingFromPause&&!r(this,Z)}handleSseConnectionClosed(e){let s=r(this,me),a=r(this,Z),o=!1,i=!1;return e.connectionDuration<e.minConnectionDuration&&!e.wasAborted?(i=!0,s=s+1,s>=e.maxShortConnections&&(a=!0,o=!0)):e.connectionDuration>=e.minConnectionDuration&&(s=0),{state:new _e(this.currentFields,{consecutiveShortSseConnections:s,sseFallbackToLongPolling:a}),fellBackToLongPolling:o,wasShortConnection:i}}};me=new WeakMap,Z=new WeakMap;var lt=_e,ee,Nt=class Nt extends it{constructor(e){let o=e,{replayCursor:s}=o,a=Ke(o,["replayCursor"]);super(a);this.kind="replaying";f(this,ee);h(this,ee,s)}get replayCursor(){return r(this,ee)}withHandle(e){return new Nt(_(E({},this.currentFields),{handle:e,replayCursor:r(this,ee)}))}handleResponseMetadata(e){let s=this.checkStaleResponse(e);if(s)return s;let a=this.parseResponseFields(e);return{action:"accepted",state:new Nt(_(E({},a),{replayCursor:r(this,ee)}))}}onUpToDate(e,s){let a=!s.isSse&&r(this,ee)===s.currentCursor;return{state:new lt(e),suppressBatch:a,becameUpToDate:!0}}};ee=new WeakMap;var Cs=Nt,ht=class n extends ot{constructor(e){super();this.kind="paused";this.previousState=e instanceof n?e.previousState:e}get handle(){return this.previousState.handle}get offset(){return this.previousState.offset}get schema(){return this.previousState.schema}get liveCacheBuster(){return this.previousState.liveCacheBuster}get lastSyncedAt(){return this.previousState.lastSyncedAt}get isUpToDate(){return this.previousState.isUpToDate}get staleCacheBuster(){return this.previousState.staleCacheBuster}get staleCacheRetryCount(){return this.previousState.staleCacheRetryCount}get sseFallbackToLongPolling(){return this.previousState.sseFallbackToLongPolling}get consecutiveShortSseConnections(){return this.previousState.consecutiveShortSseConnections}get replayCursor(){return this.previousState.replayCursor}handleResponseMetadata(e){let s=this.previousState.handleResponseMetadata(e);if(s.action==="accepted")return{action:"accepted",state:new n(s.state)};if(s.action==="ignored")return{action:"ignored",state:this};if(s.action==="stale-retry")return{action:"stale-retry",state:new n(s.state),exceededMaxRetries:s.exceededMaxRetries};let a=s;throw new Error(`PausedState.handleResponseMetadata: unhandled transition action "${a.action}"`)}withHandle(e){return new n(this.previousState.withHandle(e))}applyUrlParams(e,s){this.previousState.applyUrlParams(e,s)}pause(){return this}resume(){return this.previousState}},ke=class n extends ot{constructor(e,s){super();this.kind="error";this.previousState=e instanceof n?e.previousState:e,this.error=s}get handle(){return this.previousState.handle}get offset(){return this.previousState.offset}get schema(){return this.previousState.schema}get liveCacheBuster(){return this.previousState.liveCacheBuster}get lastSyncedAt(){return this.previousState.lastSyncedAt}get isUpToDate(){return this.previousState.isUpToDate}get staleCacheBuster(){return this.previousState.staleCacheBuster}get staleCacheRetryCount(){return this.previousState.staleCacheRetryCount}get sseFallbackToLongPolling(){return this.previousState.sseFallbackToLongPolling}get consecutiveShortSseConnections(){return this.previousState.consecutiveShortSseConnections}get replayCursor(){return this.previousState.replayCursor}withHandle(e){return new n(this.previousState.withHandle(e),this.error)}applyUrlParams(e,s){this.previousState.applyUrlParams(e,s)}retry(){return this.previousState}reset(e){return this.previousState.markMustRefetch(e)}};function lr(n){return new Ft({handle:n.handle,offset:n.offset,liveCacheBuster:"",lastSyncedAt:void 0,schema:void 0})}var H,dt,ut,$t=class{constructor(t){f(this,H,new Set);f(this,dt);f(this,ut);h(this,dt,t.onAcquired),h(this,ut,t.onReleased)}acquire(t){if(r(this,H).has(t)){console.warn(`[Electric] PauseLock: "${t}" already held \u2014 ignoring duplicate acquire`);return}let e=r(this,H).size===0;r(this,H).add(t),e&&r(this,dt).call(this)}release(t){if(!r(this,H).delete(t)){console.warn(`[Electric] PauseLock: "${t}" not held \u2014 ignoring release (possible acquire/release mismatch)`);return}r(this,H).size===0&&r(this,ut).call(this)}get isPaused(){return r(this,H).size>0}isHeldBy(t){return r(this,H).has(t)}releaseAllMatching(t){for(let e of r(this,H))e.startsWith(t)&&r(this,H).delete(e)}};H=new WeakMap,dt=new WeakMap,ut=new WeakMap;var Xr=new Set([Je,he,$,de,ue]),ge="https://electric-sql.com/docs/guides/troubleshooting";function qt(){return`${Date.now()}-${Math.random().toString(36).substring(2,9)}`}async function Ds(n){return typeof n=="function"?n():n}async function Zr(n){let t=Object.entries(n),e=await Promise.all(t.map(async([s,a])=>{if(a===void 0)return[s,void 0];let o=await Ds(a);return[s,Array.isArray(o)?o.join(","):o]}));return Object.fromEntries(e.filter(([s,a])=>a!==void 0))}async function en(n){if(!n)return{};let t=Object.entries(n),e=await Promise.all(t.map(async([s,a])=>[s,await Ds(a)]));return Object.fromEntries(e)}function Se(n){let t=new URL(n.origin+n.pathname);for(let[e,s]of n.searchParams)ms.includes(e)||t.searchParams.append(e,s);return t.searchParams.sort(),t.toString()}var Le,De,He,ye,te,q,g,Y,se,Be,k,re,Kt,m,_s,V,Ie,Fe,Ne,pt,U,F,mt,Qt,zt,Gt,Jt,$e,ne,ae,N,qe,je,Xt,Zt,K,gt,Ee,St,be,Re,oe,yt,Et,ft,Ue,dr,Oe,ur,jt,fr,Ms,Wt,pr,mr,gr,Sr,ks,Yt,Us,yr,Er,Vt,Os,br,Ps=class{constructor(t){f(this,m);f(this,Le,null);f(this,De);f(this,He);f(this,ye);f(this,te,new Map);f(this,q,!1);f(this,g);f(this,Y,!1);f(this,se);f(this,Be);f(this,k);f(this,re,0);f(this,Kt,0);f(this,V);f(this,Ie);f(this,Fe);f(this,Ne,Promise.resolve([]));f(this,pt,new It);f(this,U);f(this,F);f(this,mt);f(this,Qt,1e3);f(this,zt,3);f(this,Gt,100);f(this,Jt,5e3);f(this,$e);f(this,ne);f(this,ae,3);f(this,N,[]);f(this,qe,500);f(this,je,5);f(this,Xt,100);f(this,Zt,5e3);f(this,K,0);f(this,gt,5);f(this,Ee);f(this,St,5);f(this,be,null);f(this,Re,null);f(this,oe,0);f(this,yt,50);f(this,Et);var i,c,l,u;this.options=E({subscribe:!0},t),nn(this.options),h(this,g,lr({offset:(i=this.options.offset)!=null?i:"-1",handle:this.options.handle})),h(this,U,new $t({onAcquired:()=>{var d;h(this,g,r(this,g).pause()),r(this,q)&&((d=r(this,k))==null||d.abort(Zs))},onReleased:()=>{var d;r(this,q)&&((d=this.options.signal)!=null&&d.aborted||p(this,m,ft).call(this).catch(()=>{}))}}));let e;if(t.columnMapper){let d=S=>{let y={};for(let[b,R]of Object.entries(S)){let w=t.columnMapper.decode(b);y[w]=R}return y};e=t.transformer?S=>t.transformer(d(S)):d}else e=t.transformer;h(this,ye,new Mt(t.parser,e)),h(this,Be,this.options.onError),h(this,se,(c=this.options.log)!=null?c:"full");let s=(l=t.fetchClient)!=null?l:(...d)=>fetch(...d),a=_(E({},(u=t.backoffOptions)!=null?u:Dt),{onFailedAttempt:()=>{var d,S;h(this,Y,!1),(S=(d=t.backoffOptions)==null?void 0:d.onFailedAttempt)==null||S.call(d)}});h(this,Et,{initialDelay:a.initialDelay,maxDelay:a.maxDelay,multiplier:a.multiplier});let o=er(s,a);h(this,He,rr(sr(o))),h(this,De,tr(r(this,He))),p(this,m,yr).call(this)}get shapeHandle(){return r(this,g).handle}get error(){return r(this,Le)}get isUpToDate(){return r(this,g).isUpToDate}get lastOffset(){return r(this,g).offset}get mode(){return r(this,se)}subscribe(t,e=()=>{}){let s={};return r(this,te).set(s,[t,e]),r(this,q)||p(this,m,ft).call(this),()=>{r(this,te).delete(s)}}unsubscribeAll(){var t,e;r(this,te).clear(),(t=r(this,$e))==null||t.call(this),(e=r(this,ne))==null||e.call(this)}lastSyncedAt(){return r(this,g).lastSyncedAt}lastSynced(){return r(this,g).lastSyncedAt===void 0?1/0:Date.now()-r(this,g).lastSyncedAt}isConnected(){return r(this,Y)}isLoading(){return!r(this,g).isUpToDate}hasStarted(){return r(this,q)}isPaused(){return r(this,U).isPaused}async forceDisconnectAndRefresh(){var t,e;z(this,re)._++;try{r(this,g).isUpToDate&&!((t=r(this,k))!=null&&t.signal.aborted)&&((e=r(this,k))==null||e.abort(hs)),await p(this,m,Sr).call(this)}finally{z(this,re)._--}}async requestSnapshot(t){if(r(this,se)==="full")throw new Error(`Snapshot requests are not supported in ${r(this,se)} mode, as the consumer is guaranteed to observe all data`);r(this,q)||p(this,m,ft).call(this).catch(()=>{});let e=`snapshot-${++z(this,Kt)._}`;r(this,U).acquire(e);let s=setTimeout(()=>{console.warn(`[Electric] Snapshot "${e}" has held the pause lock for 30s \u2014 possible hung request or leaked lock. Current holders: ${[...new Set([e])].join(", ")}`,new Error("stack trace"))},3e4);try{let{metadata:a,data:o,responseOffset:i,responseHandle:c}=await this.fetchSnapshot(t),l=o.concat([{headers:E({control:"snapshot-end"},a)},{headers:E({control:"subset-end"},t)}]);if(r(this,pt).addSnapshot(a,new Set(o.map(u=>u.key))),p(this,m,Wt).call(this,l,!1),i!==null||c!==null){let u=r(this,g).handleResponseMetadata({status:200,responseHandle:c,responseOffset:i,responseCursor:null,expiredHandle:null,now:Date.now(),maxStaleCacheRetries:r(this,ae),createCacheBuster:qt});u.action==="accepted"?h(this,g,u.state):console.warn(`[Electric] Snapshot response metadata was not accepted by state "${r(this,g).kind}" (action: ${u.action}). Stream offset was not advanced from snapshot.`,new Error("stack trace"))}return{metadata:a,data:o}}finally{clearTimeout(s),r(this,U).release(e)}}async fetchSnapshot(t){return p(this,m,Os).call(this,t,0)}};Le=new WeakMap,De=new WeakMap,He=new WeakMap,ye=new WeakMap,te=new WeakMap,q=new WeakMap,g=new WeakMap,Y=new WeakMap,se=new WeakMap,Be=new WeakMap,k=new WeakMap,re=new WeakMap,Kt=new WeakMap,m=new WeakSet,_s=function(){return r(this,re)>0},V=new WeakMap,Ie=new WeakMap,Fe=new WeakMap,Ne=new WeakMap,pt=new WeakMap,U=new WeakMap,F=new WeakMap,mt=new WeakMap,Qt=new WeakMap,zt=new WeakMap,Gt=new WeakMap,Jt=new WeakMap,$e=new WeakMap,ne=new WeakMap,ae=new WeakMap,N=new WeakMap,qe=new WeakMap,je=new WeakMap,Xt=new WeakMap,Zt=new WeakMap,K=new WeakMap,gt=new WeakMap,Ee=new WeakMap,St=new WeakMap,be=new WeakMap,Re=new WeakMap,oe=new WeakMap,yt=new WeakMap,Et=new WeakMap,ft=async function(){var t,e,s;h(this,q,!0),p(this,m,Er).call(this);try{await p(this,m,Oe).call(this)}catch(a){if(h(this,Le,a),a instanceof Error&&h(this,g,r(this,g).toErrorState(a)),r(this,Be)){let o=await r(this,Be).call(this,a),i=!(a instanceof G);if(o&&typeof o=="object"&&i){if(o.params&&(this.options.params=E(E({},(t=this.options.params)!=null?t:{}),o.params)),o.headers&&(this.options.headers=E(E({},(e=this.options.headers)!=null?e:{}),o.headers)),z(this,oe)._++,r(this,oe)>r(this,yt)){console.warn(`[Electric] onError retry loop exhausted after ${r(this,yt)} consecutive retries. 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Error: ${a instanceof Error?a.message:String(a)}`,new Error("stack trace")),a instanceof Error&&p(this,m,Yt).call(this,a),p(this,m,Ue).call(this);return}if(h(this,Le,null),r(this,g)instanceof ke&&h(this,g,r(this,g).retry()),h(this,K,0),h(this,N,[]),await p(this,m,dr).call(this,r(this,oe)),(s=this.options.signal)!=null&&s.aborted){p(this,m,Ue).call(this);return}return h(this,q,!1),p(this,m,ft).call(this)}a instanceof Error&&p(this,m,Yt).call(this,a),p(this,m,Ue).call(this);return}throw a instanceof Error&&p(this,m,Yt).call(this,a),p(this,m,Ue).call(this),a}p(this,m,Ue).call(this)},Ue=function(){var t,e;h(this,Y,!1),(t=r(this,Fe))==null||t.call(this),(e=r(this,ne))==null||e.call(this)},dr=async function(t){let{initialDelay:e,maxDelay:s,multiplier:a}=r(this,Et),o=Math.min(s,e*Math.pow(a,t-1)),i=Math.floor(Math.random()*o),c=this.options.signal;i<=0||c!=null&&c.aborted||await new Promise(l=>{let u=!1,d=()=>{u||(u=!0,clearTimeout(S),c==null||c.removeEventListener("abort",d),l())},S=setTimeout(d,i);c==null||c.addEventListener("abort",d,{once:!0}),c!=null&&c.aborted&&d()})},Oe=async function(t){var d,S;if(r(this,g)instanceof ke)throw r(this,g).error;let e=t!=null?t:r(this,Ee);if(r(this,U).isPaused){e&&h(this,Ee,e);return}if(!this.options.subscribe&&((d=this.options.signal)!=null&&d.aborted||r(this,g).isUpToDate))return;r(this,g).isUpToDate?(h(this,K,0),h(this,N,[])):await p(this,m,ur).call(this);let s=!1;r(this,g)instanceof ht&&(s=!0,h(this,g,r(this,g).resume()));let{url:a,signal:o}=this.options,{fetchUrl:i,requestHeaders:c}=await p(this,m,jt).call(this,a,s);e&&(i.searchParams.set(ue,e),i.searchParams.sort());let l=await p(this,m,fr).call(this,o),u=r(this,k);if(r(this,U).isPaused){l&&o&&o.removeEventListener("abort",l),e&&h(this,Ee,e),h(this,k,void 0);return}h(this,Ee,void 0);try{await p(this,m,pr).call(this,{fetchUrl:i,requestAbortController:u,headers:c,resumingFromPause:s})}catch(y){let b=u.signal.reason,R=u.signal.aborted&&(b===hs||b===ds);if((y instanceof x||y instanceof j)&&R)return p(this,m,Oe).call(this);if(y instanceof j)return;if(y instanceof le)return p(this,m,Oe).call(this);if(!(y instanceof x))throw y;if(y.status==409){if(r(this,g).handle){let C=Se(i);X.markExpired(C,r(this,g).handle)}let w=y.headers[J];w||console.warn("[Electric] Received 409 response without a shape handle header. This likely indicates a proxy or CDN stripping required headers.",new Error("stack trace"));let A=qt();return p(this,m,Vt).call(this,w),await p(this,m,ks).call(this,[{headers:{control:"must-refetch"}}]),p(this,m,Oe).call(this,A)}else throw y}finally{l&&o&&o.removeEventListener("abort",l),h(this,k,void 0)}return(S=r(this,Ie))==null||S.call(this),p(this,m,Oe).call(this)},ur=async function(){let t=Date.now(),e=r(this,g).offset;if(h(this,N,r(this,N).filter(i=>t-i.timestamp<r(this,qe))),r(this,N).push({timestamp:t,offset:e}),r(this,N).filter(i=>i.offset===e).length<r(this,je))return;if(z(this,K)._++,r(this,K)>=r(this,gt))throw new x(502,void 0,void 0,{},this.options.url,`Client is stuck in a fast retry loop (${r(this,je)} requests in ${r(this,qe)}ms at the same offset, repeated ${r(this,gt)} times). Client-side caches were cleared automatically on first detection, but the loop persists. This usually indicates a proxy or CDN misconfiguration. Common causes:
  - Proxy is not including query parameters (handle, offset) in its cache key
  - CDN is serving stale 409 responses
  - Proxy is stripping required Electric headers from responses
For more information visit the troubleshooting guide: ${ge}`);if(r(this,K)===1){if(console.warn(`[Electric] Detected fast retry loop (${r(this,je)} requests in ${r(this,qe)}ms at the same offset). Clearing client-side caches and resetting stream to recover. If this persists, check that your proxy includes all query parameters (especially 'handle' and 'offset') in its cache key, and that required Electric headers are forwarded to the client. For more information visit the troubleshooting guide: ${ge}`,new Error("stack trace")),r(this,F)){let i=Se(r(this,F));X.delete(i),at.delete(i)}else X.clear(),at.clear();p(this,m,Vt).call(this),h(this,N,[]);return}let a=Math.min(r(this,Zt),r(this,Xt)*Math.pow(2,r(this,K))),o=Math.floor(Math.random()*a);await new Promise(i=>setTimeout(i,o)),h(this,N,[])},jt=async function(t,e,s){var u,d,S,y,b,R;let[a,o]=await Promise.all([en(this.options.headers),this.options.params?Zr(an(this.options.params)):void 0]);o&&Rr(o);let i=new URL(t);if(o){if(o.table&&O(i,zs,o.table),o.where&&typeof o.where=="string"){let A=ve(o.where,(u=this.options.columnMapper)==null?void 0:u.encode);O(i,Gs,A)}if(o.columns){let A=await Ds((d=this.options.params)==null?void 0:d.columns);if(Array.isArray(A)){let C=A.map(String);this.options.columnMapper&&(C=C.map(this.options.columnMapper.encode));let D=C.map(Qe).join(",");O(i,is,D)}else O(i,is,o.columns)}o.replica&&O(i,Js,o.replica),o.params&&O(i,Xs,o.params);let w=E({},o);delete w.table,delete w.where,delete w.columns,delete w.replica,delete w.params;for(let[A,C]of Object.entries(w))O(i,A,C)}if(s){if(s.whereExpr){let w=nt(s.whereExpr,(S=this.options.columnMapper)==null?void 0:S.encode);O(i,Ce,w),i.searchParams.set(fs,JSON.stringify(s.whereExpr))}else if(s.where&&typeof s.where=="string"){let w=ve(s.where,(y=this.options.columnMapper)==null?void 0:y.encode);O(i,Ce,w)}if(s.params&&i.searchParams.set(tt,Ut(s.params)),s.limit!==void 0&&O(i,Ze,s.limit),s.offset!==void 0&&O(i,et,s.offset),s.orderByExpr){let w=Ht(s.orderByExpr,(b=this.options.columnMapper)==null?void 0:b.encode);O(i,Ae,w),i.searchParams.set(ps,JSON.stringify(s.orderByExpr))}else if(s.orderBy&&typeof s.orderBy=="string"){let w=ve(s.orderBy,(R=this.options.columnMapper)==null?void 0:R.encode);O(i,Ae,w)}}r(this,g).applyUrlParams(i,{isSnapshotRequest:s!==void 0,canLongPoll:!r(this,m,_s)&&!e}),i.searchParams.set(us,r(this,se));let c=Se(i),l=X.getExpiredHandle(c);return l&&i.searchParams.set(Xe,l),i.searchParams.sort(),{fetchUrl:i,requestHeaders:a}},fr=async function(t){var e;if(h(this,k,new AbortController),t){let s=()=>{var a;(a=r(this,k))==null||a.abort(t.reason)};return t.addEventListener("abort",s,{once:!0}),t.aborted&&((e=r(this,k))==null||e.abort(t.reason)),s}},Ms=async function(t){var l,u,d;let{headers:e,status:s}=t,a=e.get(J),o=r(this,F)?Se(r(this,F)):null,i=o?X.getExpiredHandle(o):null;if(r(this,Re)){let{shapeKey:S,staleHandle:y}=r(this,Re);h(this,Re,null),o===S&&a===y&&console.warn(`[Electric] Self-healing retry received the same handle "${y}" that was just marked expired. This means your proxy/CDN is serving a stale cached response and ignoring cache-buster query params. The client will proceed with this stale data to avoid a permanent failure, but it may be out of date until the cache refreshes. Fix: configure your proxy/CDN to include all query parameters (especially 'handle' and 'offset') in its cache key. For more information visit the troubleshooting guide: ${ge}`,new Error("stack trace"))}let c=r(this,g).handleResponseMetadata({status:s,responseHandle:a,responseOffset:e.get(Te),responseCursor:e.get(Ot),responseSchema:hr(e),expiredHandle:i,now:Date.now(),maxStaleCacheRetries:r(this,ae),createCacheBuster:qt});if(h(this,g,c.state),s===204&&h(this,be,null),c.action==="accepted"&&s===204&&h(this,oe,0),c.action==="stale-retry")throw await((l=t.body)==null?void 0:l.cancel()),c.exceededMaxRetries?o&&(X.delete(o),r(this,be)!==o)?(console.warn(`[Electric] Stale cache retries exhausted (${r(this,ae)} attempts). Clearing expired handle entry and attempting self-healing retry without the expired_handle parameter. For more information visit the troubleshooting guide: ${ge}`,new Error("stack trace")),h(this,be,o),a&&h(this,Re,{shapeKey:o,staleHandle:a}),p(this,m,Vt).call(this),new le("Expired handle entry evicted for self-healing retry")):new x(502,void 0,void 0,{},(d=(u=r(this,F))==null?void 0:u.toString())!=null?d:"",`CDN continues serving stale cached responses after ${r(this,ae)} retry attempts. This indicates a severe proxy/CDN misconfiguration. Check that your proxy includes all query parameters (especially 'handle' and 'offset') in its cache key. For more information visit the troubleshooting guide: ${ge}`):(console.warn(`[Electric] Received stale cached response with expired shape handle. This should not happen and indicates a proxy/CDN caching misconfiguration. The response contained handle "${a}" which was previously marked as expired. Check that your proxy includes all query parameters (especially 'handle' and 'offset') in its cache key. For more information visit the troubleshooting guide: ${ge} Retrying with a random cache buster to bypass the stale cache (attempt ${r(this,g).staleCacheRetryCount}/${r(this,ae)}).`,new Error("stack trace")),new le(`Received stale cached response with expired handle "${a}". This indicates a proxy/CDN caching misconfiguration. Check that your proxy includes all query parameters (especially 'handle' and 'offset') in its cache key.`));return c.action==="ignored"?(console.warn(`[Electric] Response was ignored by state "${r(this,g).kind}". The response body will be skipped. This may indicate a proxy/CDN caching issue or a client state machine bug.`,new Error("stack trace")),!1):!0},Wt=async function(t,e=!1){if(!Array.isArray(t)){console.warn(`[Electric] #onMessages called with non-array argument (${typeof t}). This is a client bug \u2014 please report it.`,new Error("stack trace"));return}if(t.length===0)return;h(this,oe,0);let s=t[t.length-1],a=as(s),o=a?Vs(s):void 0,i=r(this,g).handleMessageBatch({hasMessages:!0,hasUpToDateMessage:a,isSse:e,upToDateOffset:o,now:Date.now(),currentCursor:r(this,g).liveCacheBuster});if(h(this,g,i.state),a){if(i.suppressBatch)return;if(r(this,F)){let l=Se(r(this,F));at.recordUpToDate(l,r(this,g).liveCacheBuster),h(this,be,null)}}let c=t.filter(l=>ze(l)?!r(this,pt).shouldRejectMessage(l):!0);await p(this,m,ks).call(this,c)},pr=async function(t){var s;if(h(this,F,t.fetchUrl),!r(this,g).isUpToDate&&r(this,g).canEnterReplayMode()){let a=Se(t.fetchUrl),o=at.shouldEnterReplayMode(a);o&&h(this,g,r(this,g).enterReplayMode(o))}let e=(s=this.options.liveSse)!=null?s:this.options.experimentalLiveSse;return r(this,g).shouldUseSse({liveSseEnabled:!!e,isRefreshing:r(this,m,_s),resumingFromPause:!!t.resumingFromPause})?(t.fetchUrl.searchParams.set(cs,"true"),t.fetchUrl.searchParams.set(ls,"true"),p(this,m,gr).call(this,t)):p(this,m,mr).call(this,t)},mr=async function(t){var S;let{fetchUrl:e,requestAbortController:s,headers:a}=t,o=await r(this,De).call(this,e.toString(),{signal:s.signal,headers:a});if(h(this,Y,!0),!await p(this,m,Ms).call(this,o))return;let c=r(this,g).schema,u=await o.text()||"[]",d=r(this,ye).parse(u,c);if(!Array.isArray(d)){let y=(S=Ut(d))==null?void 0:S.slice(0,200);throw new x(o.status,`Received non-array response body from shape endpoint. This may indicate a proxy or CDN is returning an unexpected response. Expected a JSON array, got ${typeof d}: ${y}`,void 0,Object.fromEntries(o.headers.entries()),e.toString())}await p(this,m,Wt).call(this,d)},gr=async function(t){let{fetchUrl:e,requestAbortController:s,headers:a}=t,o=r(this,He);h(this,mt,Date.now());let i=_(E({},a),{Accept:"text/event-stream"}),c=!1;try{let l=[];await ys(e.toString(),{headers:i,fetch:o,onopen:async u=>{if(h(this,Y,!0),!await p(this,m,Ms).call(this,u))throw c=!0,new Error("stale response ignored")},onmessage:u=>{if(u.data){let d=r(this,g).schema,S=r(this,ye).parse(u.data,d);l.push(S),as(S)&&(p(this,m,Wt).call(this,l,!0),l=[])}},onerror:u=>{throw u},signal:s.signal})}catch(l){if(c)return;if(s.signal.aborted)throw new j;if(l instanceof x||l instanceof le||l instanceof G)throw l}finally{let l=Date.now()-r(this,mt),u=s.signal.aborted,d=r(this,g).handleSseConnectionClosed({connectionDuration:l,wasAborted:u,minConnectionDuration:r(this,Qt),maxShortConnections:r(this,zt)});if(h(this,g,d.state),d.fellBackToLongPolling)console.warn("[Electric] SSE connections are closing immediately (possibly due to proxy buffering or misconfiguration). Falling back to long polling. Your proxy must support streaming SSE responses (not buffer the complete response). Configuration: Nginx add 'X-Accel-Buffering: no', Caddy add 'flush_interval -1' to reverse_proxy. Note: Do NOT disable caching entirely - Electric uses cache headers to enable request collapsing for efficiency.",new Error("stack trace"));else if(d.wasShortConnection){let S=Math.min(r(this,Jt),r(this,Gt)*Math.pow(2,r(this,g).consecutiveShortSseConnections)),y=Math.floor(Math.random()*S);await new Promise(b=>setTimeout(b,y))}}},Sr=async function(){if(r(this,U).isPaused)throw new Error("Cannot wait for next tick while PauseLock is held \u2014 this would deadlock because the request loop is paused");return r(this,V)?r(this,V):(h(this,V,new Promise((t,e)=>{h(this,Ie,t),h(this,Fe,e)})),r(this,V).finally(()=>{h(this,V,void 0),h(this,Ie,void 0),h(this,Fe,void 0)}),r(this,V))},ks=async function(t){return h(this,Ne,r(this,Ne).then(()=>Promise.all(Array.from(r(this,te).values()).map(async([e,s])=>{try{await e(t)}catch(a){queueMicrotask(()=>{throw a})}})))),r(this,Ne)},Yt=function(t){r(this,te).forEach(([e,s])=>{s==null||s(t)})},Us=function(){return typeof document=="object"&&typeof document.hidden=="boolean"&&typeof document.addEventListener=="function"},yr=function(){if(p(this,m,Us).call(this)){let t=()=>{document.hidden?r(this,U).acquire("visibility"):r(this,U).release("visibility")};document.addEventListener("visibilitychange",t),h(this,$e,()=>{document.removeEventListener("visibilitychange",t),h(this,$e,void 0)})}},Er=function(){if(p(this,m,Us).call(this)||r(this,ne))return;let t=2e3,e=4e3,s=Date.now(),a=setInterval(()=>{let o=Date.now(),i=o-s;s=o,i>t+e&&!r(this,U).isPaused&&r(this,k)&&(z(this,re)._++,r(this,k).abort(ds),queueMicrotask(()=>{z(this,re)._--}))},t);typeof a=="object"&&"unref"in a&&a.unref(),h(this,ne,()=>{clearInterval(a),h(this,ne,void 0)})},Vt=function(t){h(this,g,r(this,g).markMustRefetch(t)),h(this,Y,!1),r(this,U).releaseAllMatching("snapshot")},Os=async function(t,e,s){var A,C,D;let o=((C=(A=t.method)!=null?A:this.options.subsetMethod)!=null?C:"GET")==="POST",i,c;if(o){let P=await p(this,m,jt).call(this,this.options.url,!0);i=P.fetchUrl,c={method:"POST",headers:_(E({},P.requestHeaders),{"Content-Type":"application/json"}),body:Ut(p(this,m,br).call(this,t))}}else{let P=await p(this,m,jt).call(this,this.options.url,!0,t);i=P.fetchUrl,c={headers:P.requestHeaders}}s&&(i.searchParams.set(ue,s),i.searchParams.sort());let l=r(this,g).handle,u;try{u=await r(this,De).call(this,i.toString(),c)}catch(P){if(P instanceof x&&P.status===409){let Rt=e+1;if(Rt>r(this,St))throw new x(502,void 0,void 0,{},i.toString(),`Snapshot request stuck in 409 retry loop after ${r(this,St)} attempts. This indicates a proxy/CDN misconfiguration. For more information visit the troubleshooting guide: ${ge}`);if(l){let wt=Se(i);X.markExpired(wt,l)}let xe=P.headers[J];xe?h(this,g,r(this,g).withHandle(xe)):console.warn("[Electric] Received 409 response without a shape handle header. This likely indicates a proxy or CDN stripping required headers.",new Error("stack trace"));let Ye=qt();return p(this,m,Os).call(this,t,Rt,Ye)}throw P}if(!u.ok)throw await x.fromResponse(u,i.toString());let d=(D=r(this,g).schema)!=null?D:hr(u.headers,{required:!0,url:i.toString()}),{metadata:S,data:y}=await u.json(),b=r(this,ye).parseSnapshotData(y,d),R=u.headers.get(Te)||null,w=u.headers.get(J);return{metadata:S,data:b,responseOffset:R,responseHandle:w}},br=function(t){var s,a,o,i;let e={};return t.whereExpr?(e.where=nt(t.whereExpr,(s=this.options.columnMapper)==null?void 0:s.encode),e.where_expr=t.whereExpr):t.where&&typeof t.where=="string"&&(e.where=ve(t.where,(a=this.options.columnMapper)==null?void 0:a.encode)),