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firebase

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Firebase JavaScript library for web and Node.js

firebase.google.com

firebase/firebase-js-sdk

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Closing connection.");var t=e.message||e.data;t&&this.log_(t),this.onClosed_()}}start(){}static forceDisallow(){y.forceDisallow_=!0}static isAvailable(){let e=!1;var t;return!(e="undefined"!=typeof navigator&&navigator.userAgent&&(t=navigator.userAgent.match(/Android ([0-9]{0,}\.[0-9]{0,})/))&&1<t.length&&parseFloat(t[1])<4.4?!0:e)&&null!==pt&&!y.forceDisallow_}static previouslyFailed(){return Ae.isInMemoryStorage||!0===Ae.get("previous_websocket_failure")}markConnectionHealthy(){Ae.remove("previous_websocket_failure")}appendFrame_(e){var t;this.frames.push(e),this.frames.length===this.totalFrames&&(t=this.frames.join(""),this.frames=null,t=ee(t),this.onMessage(t))}handleNewFrameCount_(e){this.totalFrames=e,this.frames=[]}extractFrameCount_(e){if(f(null===this.frames,"We already have a frame buffer"),e.length<=6){var t=Number(e);if(!isNaN(t))return this.handleNewFrameCount_(t),null}return this.handleNewFrameCount_(1),e}handleIncomingFrame(e){var t;null!==this.mySock&&(t=e.data,this.bytesReceived+=t.length,this.stats_.incrementCounter("bytes_received",t.length),this.resetKeepAlive(),null!==this.frames?this.appendFrame_(t):null!==(t=this.extractFrameCount_(t))&&this.appendFrame_(t))}send(e){this.resetKeepAlive();var t=a(e),n=(this.bytesSent+=t.length,this.stats_.incrementCounter("bytes_sent",t.length),Re(t,16384));1<n.length&&this.sendString_(String(n.length));for(let r=0;r<n.length;r++)this.sendString_(n[r])}shutdown_(){this.isClosed_=!0,this.keepaliveTimer&&(clearInterval(this.keepaliveTimer),this.keepaliveTimer=null),this.mySock&&(this.mySock.close(),this.mySock=null)}onClosed_(){this.isClosed_||(this.log_("WebSocket is closing itself"),this.shutdown_(),this.onDisconnect&&(this.onDisconnect(this.everConnected_),this.onDisconnect=null))}close(){this.isClosed_||(this.log_("WebSocket is being closed"),this.shutdown_())}resetKeepAlive(){clearInterval(this.keepaliveTimer),this.keepaliveTimer=setInterval(()=>{this.mySock&&this.sendString_("0"),this.resetKeepAlive()},Math.floor(45e3))}sendString_(e){try{this.mySock.send(e)}catch(e){this.log_("Exception thrown from WebSocket.send():",e.message||e.data,"Closing connection."),setTimeout(this.onClosed_.bind(this),0)}}}y.responsesRequiredToBeHealthy=2,y.healthyTimeout=3e4;class ft{static get ALL_TRANSPORTS(){return[dt,y]}static get IS_TRANSPORT_INITIALIZED(){return this.globalTransportInitialized_}constructor(e){this.initTransports_(e)}initTransports_(e){var t=y&&y.isAvailable();let n=t&&!y.previouslyFailed();if(e.webSocketOnly&&(t||m("wss:// URL used, but browser isn't known to support websockets. Trying anyway."),n=!0),n)this.transports_=[y];else{var r,i=this.transports_=[];for(r of ft.ALL_TRANSPORTS)r&&r.isAvailable()&&i.push(r);ft.globalTransportInitialized_=!0}}initialTransport(){if(0<this.transports_.length)return this.transports_[0];throw new Error("No transports available")}upgradeTransport(){return 1<this.transports_.length?this.transports_[1]:null}}ft.globalTransportInitialized_=!1;class gt{constructor(e,t,n,r,i,s,o,a,l,h){this.id=e,this.repoInfo_=t,this.applicationId_=n,this.appCheckToken_=r,this.authToken_=i,this.onMessage_=s,this.onReady_=o,this.onDisconnect_=a,this.onKill_=l,this.lastSessionId=h,this.connectionCount=0,this.pendingDataMessages=[],this.state_=0,this.log_=Se("c:"+this.id+":"),this.transportManager_=new ft(t),this.log_("Connection created"),this.start_()}start_(){var e=this.transportManager_.initialTransport();this.conn_=new e(this.nextTransportId_(),this.repoInfo_,this.applicationId_,this.appCheckToken_,this.authToken_,null,this.lastSessionId),this.primaryResponsesRequired_=e.responsesRequiredToBeHealthy||0;let t=this.connReceiver_(this.conn_),n=this.disconnReceiver_(this.conn_);this.tx_=this.conn_,this.rx_=this.conn_,this.secondaryConn_=null,this.isHealthy_=!1,setTimeout(()=>{this.conn_&&this.conn_.open(t,n)},Math.floor(0));e=e.healthyTimeout||0;0<e&&(this.healthyTimeout_=Ke(()=>{this.healthyTimeout_=null,this.isHealthy_||(this.conn_&&102400<this.conn_.bytesReceived?(this.log_("Connection exceeded healthy timeout but has received "+this.conn_.bytesReceived+" bytes. Marking connection healthy."),this.isHealthy_=!0,this.conn_.markConnectionHealthy()):this.conn_&&10240<this.conn_.bytesSent?this.log_("Connection exceeded healthy timeout but has sent "+this.conn_.bytesSent+" bytes. Leaving connection alive."):(this.log_("Closing unhealthy connection after timeout."),this.close()))},Math.floor(e)))}nextTransportId_(){return"c:"+this.id+":"+this.connectionCount++}disconnReceiver_(t){return e=>{t===this.conn_?this.onConnectionLost_(e):t===this.secondaryConn_?(this.log_("Secondary connection lost."),this.onSecondaryConnectionLost_()):this.log_("closing an old connection")}}connReceiver_(t){return e=>{2!==this.state_&&(t===this.rx_?this.onPrimaryMessageReceived_(e):t===this.secondaryConn_?this.onSecondaryMessageReceived_(e):this.log_("message on old connection"))}}sendRequest(e){this.sendData_({t:"d",d:e})}tryCleanupConnection(){this.tx_===this.secondaryConn_&&this.rx_===this.secondaryConn_&&(this.log_("cleaning up and promoting a connection: "+this.secondaryConn_.connId),this.conn_=this.secondaryConn_,this.secondaryConn_=null)}onSecondaryControl_(e){var t;"t"in e&&("a"===(t=e.t)?this.upgradeIfSecondaryHealthy_():"r"===t?(this.log_("Got a reset on secondary, closing it"),this.secondaryConn_.close(),this.tx_!==this.secondaryConn_&&this.rx_!==this.secondaryConn_||this.close()):"o"===t&&(this.log_("got pong on secondary."),this.secondaryResponsesRequired_--,this.upgradeIfSecondaryHealthy_()))}onSecondaryMessageReceived_(e){var t=Pe("t",e),n=Pe("d",e);if("c"===t)this.onSecondaryControl_(n);else{if("d"!==t)throw new Error("Unknown protocol layer: "+t);this.pendingDataMessages.push(n)}}upgradeIfSecondaryHealthy_(){this.secondaryResponsesRequired_<=0?(this.log_("Secondary connection is healthy."),this.isHealthy_=!0,this.secondaryConn_.markConnectionHealthy(),this.proceedWithUpgrade_()):(this.log_("sending ping on secondary."),this.secondaryConn_.send({t:"c",d:{t:"p",d:{}}}))}proceedWithUpgrade_(){this.secondaryConn_.start(),this.log_("sending client ack on secondary"),this.secondaryConn_.send({t:"c",d:{t:"a",d:{}}}),this.log_("Ending transmission on primary"),this.conn_.send({t:"c",d:{t:"n",d:{}}}),this.tx_=this.secondaryConn_,this.tryCleanupConnection()}onPrimaryMessageReceived_(e){var t=Pe("t",e),n=Pe("d",e);"c"===t?this.onControl_(n):"d"===t&&this.onDataMessage_(n)}onDataMessage_(e){this.onPrimaryResponse_(),this.onMessage_(e)}onPrimaryResponse_(){this.isHealthy_||(this.primaryResponsesRequired_--,this.primaryResponsesRequired_<=0&&(this.log_("Primary connection is healthy."),this.isHealthy_=!0,this.conn_.markConnectionHealthy()))}onControl_(e){var t=Pe("t",e);if("d"in e){var n=e.d;if("h"===t){var r=Object.assign({},n);this.repoInfo_.isUsingEmulator&&(r.h=this.repoInfo_.host),this.onHandshake_(r)}else if("n"===t){this.log_("recvd end transmission on primary"),this.rx_=this.secondaryConn_;for(let e=0;e<this.pendingDataMessages.length;++e)this.onDataMessage_(this.pendingDataMessages[e]);this.pendingDataMessages=[],this.tryCleanupConnection()}else"s"===t?this.onConnectionShutdown_(n):"r"===t?this.onReset_(n):"e"===t?ke("Server Error: "+n):"o"===t?(this.log_("got pong on primary."),this.onPrimaryResponse_(),this.sendPingOnPrimaryIfNecessary_()):ke("Unknown control packet command: "+t)}}onHandshake_(e){var t=e.ts,n=e.v,r=e.h;this.sessionId=e.s,this.repoInfo_.host=r,0===this.state_&&(this.conn_.start(),this.onConnectionEstablished_(this.conn_,t),"5"!==n&&m("Protocol version mismatch detected"),this.tryStartUpgrade_())}tryStartUpgrade_(){var e=this.transportManager_.upgradeTransport();e&&this.startUpgrade_(e)}startUpgrade_(e){this.secondaryConn_=new e(this.nextTransportId_(),this.repoInfo_,this.applicationId_,this.appCheckToken_,this.authToken_,this.sessionId),this.secondaryResponsesRequired_=e.responsesRequiredToBeHealthy||0;var t=this.connReceiver_(this.secondaryConn_),n=this.disconnReceiver_(this.secondaryConn_);this.secondaryConn_.open(t,n),Ke(()=>{this.secondaryConn_&&(this.log_("Timed out trying to upgrade."),this.secondaryConn_.close())},Math.floor(6e4))}onReset_(e){this.log_("Reset packet received. New host: "+e),this.repoInfo_.host=e,1===this.state_?this.close():(this.closeConnections_(),this.start_())}onConnectionEstablished_(e,t){this.log_("Realtime connection established."),this.conn_=e,this.state_=1,this.onReady_&&(this.onReady_(t,this.sessionId),this.onReady_=null),0===this.primaryResponsesRequired_?(this.log_("Primary connection is healthy."),this.isHealthy_=!0):Ke(()=>{this.sendPingOnPrimaryIfNecessary_()},Math.floor(5e3))}sendPingOnPrimaryIfNecessary_(){this.isHealthy_||1!==this.state_||(this.log_("sending ping on primary."),this.sendData_({t:"c",d:{t:"p",d:{}}}))}onSecondaryConnectionLost_(){var e=this.secondaryConn_;this.secondaryConn_=null,this.tx_!==e&&this.rx_!==e||this.close()}onConnectionLost_(e){this.conn_=null,e||0!==this.state_?1===this.state_&&this.log_("Realtime connection lost."):(this.log_("Realtime connection failed."),this.repoInfo_.isCacheableHost()&&(Ae.remove("host:"+this.repoInfo_.host),this.repoInfo_.internalHost=this.repoInfo_.host)),this.close()}onConnectionShutdown_(e){this.log_("Connection shutdown command received. Shutting down..."),this.onKill_&&(this.onKill_(e),this.onKill_=null),this.onDisconnect_=null,this.close()}sendData_(e){if(1!==this.state_)throw"Connection is not connected";this.tx_.send(e)}close(){2!==this.state_&&(this.log_("Closing realtime connection."),this.state_=2,this.closeConnections_(),this.onDisconnect_)&&(this.onDisconnect_(),this.onDisconnect_=null)}closeConnections_(){this.log_("Shutting down all connections"),this.conn_&&(this.conn_.close(),this.conn_=null),this.secondaryConn_&&(this.secondaryConn_.close(),this.secondaryConn_=null),this.healthyTimeout_&&(clearTimeout(this.healthyTimeout_),this.healthyTimeout_=null)}}class mt{put(e,t,n,r){}merge(e,t,n,r){}refreshAuthToken(e){}refreshAppCheckToken(e){}onDisconnectPut(e,t,n){}onDisconnectMerge(e,t,n){}onDisconnectCancel(e,t){}reportStats(e){}}class vt{constructor(e){this.allowedEvents_=e,this.listeners_={},f(Array.isArray(e)&&0<e.length,"Requires a non-empty array")}trigger(t,...n){if(Array.isArray(this.listeners_[t])){var r=[...this.listeners_[t]];for(let e=0;e<r.length;e++)r[e].callback.apply(r[e].context,n)}}on(e,t,n){this.validateEventType_(e),this.listeners_[e]=this.listeners_[e]||[],this.listeners_[e].push({callback:t,context:n});var r=this.getInitialEvent(e);r&&t.apply(n,r)}off(e,t,n){this.validateEventType_(e);var r=this.listeners_[e]||[];for(let i=0;i<r.length;i++)if(r[i].callback===t&&(!n||n===r[i].context))return void r.splice(i,1)}validateEventType_(t){f(this.allowedEvents_.find(e=>e===t),"Unknown event: "+t)}}class yt extends vt{static getInstance(){return new yt}constructor(){super(["online"]),this.online_=!0,"undefined"==typeof window||void 0===window.addEventListener||Z()||(window.addEventListener("online",()=>{this.online_||(this.online_=!0,this.trigger("online",!0))},!1),window.addEventListener("offline",()=>{this.online_&&(this.online_=!1,this.trigger("online",!1))},!1))}getInitialEvent(e){return f("online"===e,"Unknown event type: "+e),[this.online_]}currentlyOnline(){return this.online_}}let Ct=32,wt=768;class C{constructor(n,e){if(void 0===e){this.pieces_=n.split("/");let e=0;for(let t=0;t<this.pieces_.length;t++)0<this.pieces_[t].length&&(this.pieces_[e]=this.pieces_[t],e++);this.pieces_.length=e,this.pieceNum_=0}else this.pieces_=n,this.pieceNum_=e}toString(){let e="";for(let t=this.pieceNum_;t<this.pieces_.length;t++)""!==this.pieces_[t]&&(e+="/"+this.pieces_[t]);return e||"/"}}function w(){return new C("")}function b(e){return e.pieceNum_>=e.pieces_.length?null:e.pieces_[e.pieceNum_]}function bt(e){return e.pieces_.length-e.pieceNum_}function T(e){let t=e.pieceNum_;return t<e.pieces_.length&&t++,new C(e.pieces_,t)}function Tt(e){return e.pieceNum_<e.pieces_.length?e.pieces_[e.pieces_.length-1]:null}function It(e,t=0){return e.pieces_.slice(e.pieceNum_+t)}function Et(e){if(e.pieceNum_>=e.pieces_.length)return null;var t=[];for(let n=e.pieceNum_;n<e.pieces_.length-1;n++)t.push(e.pieces_[n]);return new C(t,0)}function I(e,t){var n=[];for(let i=e.pieceNum_;i<e.pieces_.length;i++)n.push(e.pieces_[i]);if(t instanceof C)for(let e=t.pieceNum_;e<t.pieces_.length;e++)n.push(t.pieces_[e]);else{var r=t.split("/");for(let e=0;e<r.length;e++)0<r[e].length&&n.push(r[e])}return new C(n,0)}function E(e){return e.pieceNum_>=e.pieces_.length}function S(e,t){var n=b(e),r=b(t);if(null===n)return t;if(n===r)return S(T(e),T(t));throw new Error("INTERNAL ERROR: innerPath ("+t+") is not within outerPath ("+e+")")}function St(e,t){var n=It(e,0),r=It(t,0);for(let s=0;s<n.length&&s<r.length;s++){var i=ze(n[s],r[s]);if(0!==i)return i}return n.length===r.length?0:n.length<r.length?-1:1}function kt(e,t){if(bt(e)!==bt(t))return!1;for(let n=e.pieceNum_,r=t.pieceNum_;n<=e.pieces_.length;n++,r++)if(e.pieces_[n]!==t.pieces_[r])return!1;return!0}function k(e,t){let n=e.pieceNum_,r=t.pieceNum_;if(bt(e)>bt(t))return!1;for(;n<e.pieces_.length;){if(e.pieces_[n]!==t.pieces_[r])return!1;++n,++r}return!0}class Nt{constructor(e,t){this.errorPrefix_=t,this.parts_=It(e,0),this.byteLength_=Math.max(1,this.parts_.length);for(let n=0;n<this.parts_.length;n++)this.byteLength_+=le(this.parts_[n]);Pt(this)}}function Pt(e){if(e.byteLength_>wt)throw new Error(e.errorPrefix_+"has a key path longer than "+wt+" bytes ("+e.byteLength_+").");if(e.parts_.length>Ct)throw new Error(e.errorPrefix_+"path specified exceeds the maximum depth that can be written ("+Ct+") or object contains a cycle "+xt(e))}function xt(e){return 0===e.parts_.length?"":"in property '"+e.parts_.join(".")+"'"}class Rt extends vt{static getInstance(){return new Rt}constructor(){super(["visible"]);let t,e;"undefined"!=typeof document&&void 0!==document.addEventListener&&(void 0!==document.hidden?(e="visibilitychange",t="hidden"):void 0!==document.mozHidden?(e="mozvisibilitychange",t="mozHidden"):void 0!==document.msHidden?(e="msvisibilitychange",t="msHidden"):void 0!==document.webkitHidden&&(e="webkitvisibilitychange",t="webkitHidden")),this.visible_=!0,e&&document.addEventListener(e,()=>{var e=!document[t];e!==this.visible_&&(this.visible_=e,this.trigger("visible",e))},!1)}getInitialEvent(e){return f("visible"===e,"Unknown event type: "+e),[this.visible_]}}class At extends mt{constructor(e,t,n,r,i,s,o,a){if(super(),this.repoInfo_=e,this.applicationId_=t,this.onDataUpdate_=n,this.onConnectStatus_=r,this.onServerInfoUpdate_=i,this.authTokenProvider_=s,this.appCheckTokenProvider_=o,this.authOverride_=a,this.id=At.nextPersistentConnectionId_++,this.log_=Se("p:"+this.id+":"),this.interruptReasons_={},this.listens=new Map,this.outstandingPuts_=[],this.outstandingGets_=[],this.outstandingPutCount_=0,