firebase/firebase-database-compat.js

Firebase JavaScript library for web and Node.js

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Closing connection.");e=e.message||e.data;e&&this.log_(e),this.onClosed_()}}start(){}static forceDisallow(){ut.forceDisallow_=!0}static isAvailable(){let e=!1;var t;return"undefined"==typeof navigator||!navigator.userAgent||(t=navigator.userAgent.match(/Android ([0-9]{0,}\.[0-9]{0,})/))&&1<t.length&&parseFloat(t[1])<4.4&&(e=!0),!e&&null!==ct&&!ut.forceDisallow_}static previouslyFailed(){return ye.isInMemoryStorage||!0===ye.get("previous_websocket_failure")}markConnectionHealthy(){ye.remove("previous_websocket_failure")}appendFrame_(e){this.frames.push(e),this.frames.length===this.totalFrames&&(e=this.frames.join(""),this.frames=null,e=R(e),this.onMessage(e))}handleNewFrameCount_(e){this.totalFrames=e,this.frames=[]}extractFrameCount_(e){if(_(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){null!==this.mySock&&(e=e.data,this.bytesReceived+=e.length,this.stats_.incrementCounter("bytes_received",e.length),this.resetKeepAlive(),null!==this.frames?this.appendFrame_(e):null!==(e=this.extractFrameCount_(e))&&this.appendFrame_(e))}send(e){this.resetKeepAlive();e=A(e);this.bytesSent+=e.length,this.stats_.incrementCounter("bytes_sent",e.length);var t=We(e,16384);1<t.length&&this.sendString_(String(t.length));for(let e=0;e<t.length;e++)this.sendString_(t[e])}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)}}}ut.responsesRequiredToBeHealthy=2,ut.healthyTimeout=3e4;class dt{constructor(e){this.initTransports_(e)}static get ALL_TRANSPORTS(){return[lt,ut]}initTransports_(e){var t=ut&&ut.isAvailable();let n=t&&!ut.previouslyFailed();if(e.webSocketOnly&&(t||Re("wss:// URL used, but browser isn't known to support websockets.  Trying anyway."),n=!0),n)this.transports_=[ut];else{const r=this.transports_=[];for(const i of dt.ALL_TRANSPORTS)i&&i.isAvailable()&&r.push(i)}}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}}class pt{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_=Ne("c:"+this.id+":"),this.transportManager_=new dt(t),this.log_("Connection created"),this.start_()}start_(){const 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;const 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));var r=e.healthyTimeout||0;0<r&&(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(r)))}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){"t"in e&&("a"===(e=e.t)?this.upgradeIfSecondaryHealthy_():"r"===e?(this.log_("Got a reset on secondary, closing it"),this.secondaryConn_.close(),this.tx_!==this.secondaryConn_&&this.rx_!==this.secondaryConn_||this.close()):"o"===e&&(this.log_("got pong on secondary."),this.secondaryResponsesRequired_--,this.upgradeIfSecondaryHealthy_()))}onSecondaryMessageReceived_(e){var t=Fe("t",e),e=Fe("d",e);if("c"===t)this.onSecondaryControl_(e);else{if("d"!==t)throw new Error("Unknown protocol layer: "+t);this.pendingDataMessages.push(e)}}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=Fe("t",e),e=Fe("d",e);"c"===t?this.onControl_(e):"d"===t&&this.onDataMessage_(e)}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=Fe("t",e);if("d"in e){e=e.d;if("h"===t)this.onHandshake_(e);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_(e):"r"===t?this.onReset_(e):"e"===t?Pe("Server Error: "+e):"o"===t?(this.log_("got pong on primary."),this.onPrimaryResponse_(),this.sendPingOnPrimaryIfNecessary_()):Pe("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&&Re("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_),e=this.disconnReceiver_(this.secondaryConn_);this.secondaryConn_.open(t,e),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()&&(ye.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 _t{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 ft{constructor(e){this.allowedEvents_=e,this.listeners_={},_(Array.isArray(e)&&0<e.length,"Requires a non-empty array")}trigger(e,...t){if(Array.isArray(this.listeners_[e])){const n=[...this.listeners_[e]];for(let e=0;e<n.length;e++)n[e].callback.apply(n[e].context,t)}}on(e,t,n){this.validateEventType_(e),this.listeners_[e]=this.listeners_[e]||[],this.listeners_[e].push({callback:t,context:n});e=this.getInitialEvent(e);e&&t.apply(n,e)}off(e,t,n){this.validateEventType_(e);const r=this.listeners_[e]||[];for(let e=0;e<r.length;e++)if(r[e].callback===t&&(!n||n===r[e].context))return void r.splice(e,1)}validateEventType_(t){_(this.allowedEvents_.find(e=>e===t),"Unknown event: "+t)}}class gt extends ft{constructor(){super(["online"]),this.online_=!0,"undefined"==typeof window||void 0===window.addEventListener||b()||(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))}static getInstance(){return new gt}getInitialEvent(e){return _("online"===e,"Unknown event type: "+e),[this.online_]}currentlyOnline(){return this.online_}}const mt=32,yt=768;class vt{constructor(e,t){if(void 0===t){this.pieces_=e.split("/");let t=0;for(let e=0;e<this.pieces_.length;e++)0<this.pieces_[e].length&&(this.pieces_[t]=this.pieces_[e],t++);this.pieces_.length=t,this.pieceNum_=0}else this.pieces_=e,this.pieceNum_=t}toString(){let t="";for(let e=this.pieceNum_;e<this.pieces_.length;e++)""!==this.pieces_[e]&&(t+="/"+this.pieces_[e]);return t||"/"}}function wt(){return new vt("")}function Ct(e){return e.pieceNum_>=e.pieces_.length?null:e.pieces_[e.pieceNum_]}function bt(e){return e.pieces_.length-e.pieceNum_}function Tt(e){let t=e.pieceNum_;return t<e.pieces_.length&&t++,new vt(e.pieces_,t)}function Et(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 St(t){if(t.pieceNum_>=t.pieces_.length)return null;const n=[];for(let e=t.pieceNum_;e<t.pieces_.length-1;e++)n.push(t.pieces_[e]);return new vt(n,0)}function kt(t,n){const r=[];for(let e=t.pieceNum_;e<t.pieces_.length;e++)r.push(t.pieces_[e]);if(n instanceof vt)for(let e=n.pieceNum_;e<n.pieces_.length;e++)r.push(n.pieces_[e]);else{var i=n.split("/");for(let e=0;e<i.length;e++)0<i[e].length&&r.push(i[e])}return new vt(r,0)}function Nt(e){return e.pieceNum_>=e.pieces_.length}function Pt(e,t){var n=Ct(e),r=Ct(t);if(null===n)return t;if(n===r)return Pt(Tt(e),Tt(t));throw new Error("INTERNAL ERROR: innerPath ("+t+") is not within outerPath ("+e+")")}function xt(e,t){var n=It(e,0),r=It(t,0);for(let e=0;e<n.length&&e<r.length;e++){var i=Le(n[e],r[e]);if(0!==i)return i}return n.length===r.length?0:n.length<r.length?-1:1}function Rt(n,r){if(bt(n)!==bt(r))return!1;for(let e=n.pieceNum_,t=r.pieceNum_;e<=n.pieces_.length;e++,t++)if(n.pieces_[e]!==r.pieces_[t])return!1;return!0}function At(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 Dt{constructor(e,t){this.errorPrefix_=t,this.parts_=It(e,0),this.byteLength_=Math.max(1,this.parts_.length);for(let e=0;e<this.parts_.length;e++)this.byteLength_+=H(this.parts_[e]);Ot(this)}}function Ot(e){if(e.byteLength_>yt)throw new Error(e.errorPrefix_+"has a key path longer than "+yt+" bytes ("+e.byteLength_+").");if(e.parts_.length>mt)throw new Error(e.errorPrefix_+"path specified exceeds the maximum depth that can be written ("+mt+") or object contains a cycle "+Lt(e))}function Lt(e){return 0===e.parts_.length?"":"in property '"+e.parts_.join(".")+"'"}class Mt extends ft{constructor(){super(["visible"]);let t,e;"undefined"!=typeof