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yn){if(!this.callbacks_||!e.callbacks_)return!0;if(this.context_===e.context_){var t=Object.keys(e.callbacks_),r=Object.keys(this.callbacks_),i=t.length;if(i===r.length){if(1!==i)return r.every(function(t){return e.callbacks_[t]===n.callbacks_[t]});var o=t[0],s=r[0];return!(s!==o||e.callbacks_[o]&&this.callbacks_[s]&&e.callbacks_[o]!==this.callbacks_[s])}}}return!1},yn.prototype.hasAnyCallback=function(){return null!==this.callbacks_},yn);function yn(t,e,n){this.callbacks_=t,this.cancelCallback_=e,this.context_=n}var vn=(Object.defineProperty(gn,"__referenceConstructor",{get:function(){return C(fn,"Reference.ts has not been loaded"),fn},set:function(t){fn=t},enumerable:!0,configurable:!0}),gn.validateQueryEndpoints_=function(t){var e=null,n=null;if(t.hasStart()&&(e=t.getIndexStartValue()),t.hasEnd()&&(n=t.getIndexEndValue()),t.getIndex()===ye){var r="Query: When ordering by key, you may only pass one argument to startAt(), endAt(), or equalTo().",i="Query: When ordering by key, the 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Use Query.orderByKey() instead.');if("$priority"===t)throw new Error('Query.orderByChild: "$priority" is invalid.  Use Query.orderByPriority() instead.');if("$value"===t)throw new Error('Query.orderByChild: "$value" is invalid.  Use Query.orderByValue() instead.');jt("Query.orderByChild",1,t,!1),this.validateNoPreviousOrderByCall_("Query.orderByChild");var e=new Nt(t);if(e.isEmpty())throw new Error("Query.orderByChild: cannot pass in empty path.  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gn(this.repo,this.path,n,this.orderByCalled_)},gn.prototype.equalTo=function(t,e){if(k("Query.equalTo",1,2,arguments.length),qt("Query.equalTo",1,t,this.path,!1),Bt("Query.equalTo",2,e,!0),this.queryParams_.hasStart())throw new Error("Query.equalTo: Starting point was already set (by another call to startAt or equalTo).");if(this.queryParams_.hasEnd())throw new Error("Query.equalTo: Ending point was already set (by another call to endAt or equalTo).");return this.startAt(t,e).endAt(t,e)},gn.prototype.toString=function(){return k("Query.toString",0,0,arguments.length),this.repo.toString()+this.path.toUrlEncodedString()},gn.prototype.toJSON=function(){return k("Query.toJSON",0,1,arguments.length),this.toString()},gn.prototype.queryObject=function(){return this.queryParams_.getQueryObject()},gn.prototype.queryIdentifier=function(){var t=this.queryObject(),e=Ct(t);return"{}"===e?"default":e},gn.prototype.isEqual=function(t){if(k("Query.isEqual",1,1,arguments.length),!(t instanceof gn))throw new Error("Query.isEqual failed: First argument must be an instance of firebase.database.Query.");var e=this.repo===t.repo,n=this.path.equals(t.path),r=this.queryIdentifier()===t.queryIdentifier();return e&&n&&r},gn.getCancelAndContextArgs_=function(t,e,n){var r={cancel:null,context:null};if(e&&n)r.cancel=e,A(t,3,r.cancel,!0),r.context=n,L(t,4,r.context,!0);else if(e)if("object"==typeof e&&null!==e)r.context=e;else{if("function"!=typeof e)throw new Error(F(t,3,!0)+" must either be a cancel callback or a context object.");r.cancel=e}return r},Object.defineProperty(gn.prototype,"ref",{get:function(){return this.getRef()},enumerable:!0,configurable:!0}),gn);function gn(t,e,n,r){this.repo=t,this.path=e,this.queryParams_=n,this.orderByCalled_=r}var mn=(Cn.prototype.find=function(t){if(null!=this.value)return this.value.getChild(t);if(!t.isEmpty()&&0<this.children.size){var e=t.getFront();return t=t.popFront(),this.children.has(e)?this.children.get(e).find(t):null}return null},Cn.prototype.remember=function(t,e){if(t.isEmpty())this.value=e,this.children.clear();else if(null!==this.value)this.value=this.value.updateChild(t,e);else{var n=t.getFront();this.children.has(n)||this.children.set(n,new Cn);var r=this.children.get(n);t=t.popFront(),r.remember(t,e)}},Cn.prototype.forget=function(t){if(t.isEmpty())return this.value=null,this.children.clear(),!0;if(null!==this.value){if(this.value.isLeafNode())return!1;var e=this.value;this.value=null;var n=this;return e.forEachChild(Ie,function(t,e){n.remember(new Nt(t),e)}),this.forget(t)}if(0<this.children.size){var r=t.getFront();return t=t.popFront(),!this.children.has(r)||this.children.get(r).forget(t)&&this.children.delete(r),0===this.children.size}return!0},Cn.prototype.forEachTree=function(r,i){null!==this.value?i(r,this.value):this.forEachChild(function(t,e){var n=new 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e=t.getFront(),n=this.children.get(e);if(n){var r=n.remove(t.popFront()),i=void 0;return i=r.isEmpty()?this.children.remove(e):this.children.insert(e,r),null===this.value&&i.isEmpty()?On.Empty:new On(this.value,i)}return this},On.prototype.get=function(t){if(t.isEmpty())return this.value;var e=t.getFront(),n=this.children.get(e);return n?n.get(t.popFront()):null},On.prototype.setTree=function(t,e){if(t.isEmpty())return e;var n=t.getFront(),r=(this.children.get(n)||On.Empty).setTree(t.popFront(),e),i=void 0;return i=r.isEmpty()?this.children.remove(n):this.children.insert(n,r),new On(this.value,i)},On.prototype.fold=function(t){return this.fold_(Nt.Empty,t)},On.prototype.fold_=function(n,r){var i={};return this.children.inorderTraversal(function(t,e){i[t]=e.fold_(n.child(t),r)}),r(n,this.value,i)},On.prototype.findOnPath=function(t,e){return this.findOnPath_(t,Nt.Empty,e)},On.prototype.findOnPath_=function(t,e,n){var r=!!this.value&&n(e,this.value);if(r)return r;if(t.isEmpty())return null;var i=t.getFront(),o=this.children.get(i);return o?o.findOnPath_(t.popFront(),e.child(i),n):null},On.prototype.foreachOnPath=function(t,e){return this.foreachOnPath_(t,Nt.Empty,e)},On.prototype.foreachOnPath_=function(t,e,n){if(t.isEmpty())return this;this.value&&n(e,this.value);var r=t.getFront(),i=this.children.get(r);return i?i.foreachOnPath_(t.popFront(),e.child(r),n):On.Empty},On.prototype.foreach=function(t){this.foreach_(Nt.Empty,t)},On.prototype.foreach_=function(n,r){this.children.inorderTraversal(function(t,e){e.foreach_(n.child(t),r)}),this.value&&r(n,this.value)},On.prototype.foreachChild=function(n){this.children.inorderTraversal(function(t,e){e.value&&n(t,e.value)})},On.Empty=new On(null),On);function On(t,e){void 0===e&&(e=Nn=Nn||new ke(st)),this.value=t,this.children=e}var xn=(kn.prototype.operationForChild=function(t){return this.path.isEmpty()?new kn(this.source,Nt.Empty):new kn(this.source,this.path.popFront())},kn);function 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this.fullyInitialized_},Qn.prototype.isFiltered=function(){return this.filtered_},Qn.prototype.isCompleteForPath=function(t){if(t.isEmpty())return this.isFullyInitialized()&&!this.filtered_;var e=t.getFront();return this.isCompleteForChild(e)},Qn.prototype.isCompleteForChild=function(t){return this.isFullyInitialized()&&!this.filtered_||this.node_.hasChild(t)},Qn.prototype.getNode=function(){return this.node_},Qn);function Qn(t,e,n){this.node_=t,this.fullyInitialized_=e,this.filtered_=n}var qn=(Un.prototype.updateEventSnap=function(t,e,n){return new Un(new Wn(t,e,n),this.serverCache_)},Un.prototype.updateServerSnap=function(t,e,n){return new Un(this.eventCache_,new Wn(t,e,n))},Un.prototype.getEventCache=function(){return this.eventCache_},Un.prototype.getCompleteEventSnap=function(){return this.eventCache_.isFullyInitialized()?this.eventCache_.getNode():null},Un.prototype.getServerCache=function(){return this.serverCache_},Un.prototype.getCompleteServerSnap=function(){return this.serverCache_.isFullyInitialized()?this.serverCache_.getNode():null},Un.Empty=new Un(new Wn(Ye.EMPTY_NODE,!1,!1),new Wn(Ye.EMPTY_NODE,!1,!1)),Un);function Un(t,e){this.eventCache_=t,this.serverCache_=e}var Vn=(Hn.valueChange=function(t){return new Hn(Hn.VALUE,t)},Hn.childAddedChange=function(t,e){return new Hn(Hn.CHILD_ADDED,e,t)},Hn.childRemovedChange=function(t,e){return new Hn(Hn.CHILD_REMOVED,e,t)},Hn.childChangedChange=function(t,e,n){return new Hn(Hn.CHILD_CHANGED,e,t,n)},Hn.childMovedChange=function(t,e){return new Hn(Hn.CHILD_MOVED,e,t)},Hn.CHILD_ADDED="child_added",Hn.CHILD_REMOVED="child_removed",Hn.CHILD_CHANGED="child_changed",Hn.CHILD_MOVED="child_moved",Hn.VALUE="value",Hn);function Hn(t,e,n,r,i){this.type=t,this.snapshotNode=e,this.childName=n,this.oldSnap=r,this.prevName=i}var Bn=(jn.prototype.updateChild=function(t,e,n,r,i,o){C(t.isIndexed(this.index_),"A node must be indexed if only a child is updated");var s=t.getImmediateChild(e);return s.getChild(r).equals(n.getChild(r))&&s.isEmpty()===n.isEmpty()?t:(null!=o&&(n.isEmpty()?t.hasChild(e)?o.trackChildChange(Vn.childRemovedChange(e,s)):C(t.isLeafNode(),"A child remove without an old child only makes sense on a leaf node"):s.isEmpty()?o.trackChildChange(Vn.childAddedChange(e,n)):o.trackChildChange(Vn.childChangedChange(e,n,s))),t.isLeafNode()&&n.isEmpty()?t:t.updateImmediateChild(e,n).withIndex(this.index_))},jn.prototype.updateFullNode=function(r,n,i){return null!=i&&(r.isLeafNode()||r.forEachChild(Ie,function(t,e){n.hasChild(t)||i.trackChildChange(Vn.childRemovedChange(t,e))}),n.isLeafNode()||n.forEachChild(Ie,function(t,e){if(r.hasChild(t)){var n=r.getImmediateChild(t);n.equals(e)||i.trackChildChange(Vn.childChangedChange(t,e,n))}else i.trackChildChange(Vn.childAddedChange(t,e))})),n.withIndex(this.index_)},jn.prototype.updatePriority=function(t,e){return t.isEmpty()?Ye.EMPTY_NODE:t.updatePriority(e)},jn.prototype.filtersNodes=function(){return!1},jn.prototype.getIndexedFilter=function(){return this},jn.prototype.getIndex=function(){return this.index_},jn);function jn(t){this.index_=t}var Kn=(Yn.prototype.trackChildChange=function(t){var e=t.type,n=t.childName;C(e===Vn.CHILD_ADDED||e===Vn.CHILD_CHANGED||e===Vn.CHILD_REMOVED,"Only child changes supported for tracking"),C(".priority"!==n,"Only non-priority child changes can be tracked.");var r=this.changeMap.get(n);if(r){var i=r.type;if(e===Vn.CHILD_ADDED&&i===Vn.CHILD_REMOVED)this.changeMap.set(n,Vn.childChangedChange(n,t.snapshotNode,r.snapshotNode));else if(e===Vn.CHILD_REMOVED&&i===Vn.CHILD_ADDED)this.changeMap.delete(n);else if(e===Vn.CHILD_REMOVED&&i===Vn.CHILD_CHANGED)this.changeMap.set(n,Vn.childRemovedChange(n,r.oldSnap));else if(e===Vn.CHILD_CHANGED&&i===Vn.CHILD_ADDED)this.changeMap.set(n,Vn.childAddedChange(n,t.snapshotNode));else{if(e!==Vn.CHILD_CHANGED||i!==Vn.CHILD_CHANGED)throw c("Illegal combination of changes: "+t+" occurred after "+r);this.changeMap.set(n,Vn.childChangedChange(n,t.snapshotNode,r.oldSnap))}}else this.changeMap.set(n,t)},Yn.prototype.getChanges=function(){return Array.from(this.changeMap.values())},Yn);function Yn(){this.changeMap=new Map}function zn(){}var Gn=new(zn.prototype.getCompleteChild=function(t){return null},zn.prototype.getChildAfterChild=function(t,e,n){return null},zn),Xn=($n.prototype.getCompleteChild=function(t){var e=this.viewCache_.getEventCache();if(e.isCompleteForChild(t))return e.getNode().getImmediateChild(t);var n=null!=this.optCompleteServerCache_?new Wn(this.optCompleteServerCache_,!0,!1):this.viewCache_.getServerCache();return this.writes_.calcCompleteChild(t,n)},$n.prototype.getChildAfterChild=function(t,e,n){var r=null!=this.optCompleteServerCache_?this.optCompleteServerCache_:this.viewCache_.getCompleteServerSnap(),i=this.writes_.calcIndexedSlice(r,e,1,n,t);return 0===i.length?null:i[0]},$n);function $n(t,e,n){void 0===n&&(n=null),this.writes_=t,this.viewCache_=e,this.optCompleteServerCache_=n}var Jn=function(t,e){this.viewCache=t,this.changes=e},Zn=(tr.prototype.assertIndexed=function(t){C(t.getEventCache().getNode().isIndexed(this.filter_.getIndex()),"Event snap not indexed"),C(t.getServerCache().getNode().isIndexed(this.filter_.getIndex()),"Server snap not indexed")},tr.prototype.applyOperation=function(t,e,n,r){var i,o,s=new Kn;if(e.type===wn.OVERWRITE){var a=e;i=a.source.fromUser?this.applyUserOverwrite_(t,a.path,a.snap,n,r,s):(C(a.source.fromServer,"Unknown source."),o=a.source.tagged||t.getServerCache().isFiltered()&&!a.path.isEmpty(),this.applyServerOverwrite_(t,a.path,a.snap,n,r,o,s))}else if(e.type===wn.MERGE){var h=e;i=h.source.fromUser?this.applyUserMerge_(t,h.path,h.children,n,r,s):(C(h.source.fromServer,"Unknown source."),o=h.source.tagged||t.getServerCache().isFiltered(),this.applyServerMerge_(t,h.path,h.children,n,r,o,s))}else if(e.type===wn.ACK_USER_WRITE){var l=e;i=l.revert?this.revertUserWrite_(t,l.path,n,r,s):this.ackUserWrite_(t,l.path,l.affectedTree,n,r,s)}else{if(e.type!==wn.LISTEN_COMPLETE)throw c("Unknown operation type: "+e.type);i=this.listenComplete_(t,e.path,n,s)}var u=s.getChanges();return tr.maybeAddValueEvent_(t,i,u),new Jn(i,u)},tr.maybeAddValueEvent_=function(t,e,n){var r=e.getEventCache();if(r.isFullyInitialized()){var i=r.getNode().isLeafNode()||r.getNode().isEmpty(),o=t.getCompleteEventSnap();(0<n.length||!t.getEventCache().isFullyInitialized()||i&&!r.getNode().equals(o)||!r.getNode().getPriority().equals(o.getPriority()))&&n.push(Vn.valueChange(e.getCompleteEventSnap()))}},tr.prototype.generateEventCacheAfterServerEvent_=function(t,e,n,r,i){var o=t.getEventCache();if(null!=n.shadowingWrite(e))return t;var s=void 0,a=void 0;if(e.isEmpty())if(C(t.getServerCache().isFullyInitialized(),"If change path is empty, we must have complete server data"),t.getServerCache().isFiltered()){var h=t.getCompleteServerSnap(),l=h instanceof Ye?h:Ye.EMPTY_NODE,u=n.calcCompleteEventChildren(l);s=this.filter_.updateFullNode(t.getEventCache().getNode(),u,i)}else{var c=n.calcCompleteEventCache(t.getCompleteServerSnap());s=this.filter_.updateFullNode(t.getEventCache().getNode(),c,i)}else{var p=e.getFront();if(".priority"===p){C(1===e.getLength(),"Can't have a priority with additional path components");var d=o.getNode();a=t.getServerCache().getNode();var f=n.calcEventCacheAfterServerOverwrite(e,d,a);s=null!=f?this.filter_.updatePriority(d,f):o.getNode()}else{var _=e.popFront(),y=void 0;if(o.isCompleteForChild(p)){a=t.getServerCache().getNode();var v=n.calcEventCacheAfterServerOverwrite(e,o.getNode(),a);y=null!=v?o.getNode().getImmediateChild(p).updateChild(_,v):o.getNode().getImmediateChild(p)}else y=n.calcCompleteChild(p,t.getServerCache());s=null!=y?this.filter_.updateChild(o.getNode(),p,y,_,r,i):o.getNode()}}return t.updateEventSnap(s,o.isFullyInitialized()||e.isEmpty(),this.filter_.filtersNodes())},tr.prototype.applyServerOverwrite_=function(t,e,n,r,i,o,s){var a,h=t.getServerCache(),l=o?this.filter_:this.filter_.getIndexedFilter();if(e.isEmpty())a=l.updateFullNode(h.getNode(),n,null);else if(l.filtersNodes()&&!h.isFiltered()){var u=h.getNode().updateChild(e,n);a=l.updateFullNode(h.getNode(),u,null)}else{var c=e.getFront();if(!h.isCompleteForPath(e)&&1<e.getLength())return t;var p=e.popFront(),d=h.getNode().getImmediateChild(c).updateChild(p,n);a=".priority"===c?l.updatePriority(h.getNode(),d):l.updateChild(h.getNode(),c,d,p,Gn,null)}var f=t.updateServerSnap(a,h.isFullyInitialized()||e.isEmpty(),l.filtersNodes()),_=new Xn(r,f,i);return this.generateEventCacheAfterServerEvent_(f,e,r,_,s)},tr.prototype.applyUserOverwrite_=function(t,e,n,r,i,o){var s,a,h=t.getEventCache(),l=new Xn(r,t,i);if(e.isEmpty())a=this.filter_.updateFullNode(t.getEventCache().getNode(),n,o),s=t.updateEventSnap(a,!0,this.filter_.filtersNodes());else{var u=e.getFront();if(".priority"===u)a=this.filter_.updatePriority(t.getEventCache().getNode(),n),s=t.updateEventSnap(a,h.isFullyInitialized(),h.isFiltered());else{var c=e.popFront(),p=h.getNode().getImmediateChild(u),d=void 0;if(c.isEmpty())d=n;else{var f=l.getCompleteChild(u);d=null!=f?".priority"===c.getBack()&&f.getChild(c.parent()).isEmpty()?f:f.updateChild(c,n):Ye.EMPTY_NODE}if(p.equals(d))s=t;else{var _=this.filter_.updateChild(h.getNode(),u,d,c,l,o);s=t.updateEventSnap(_,h.isFullyInitialized(),this.filter_.filtersNodes())}}}return s},tr.cacheHasChild_=function(t,e){return t.getEventCache().isCompleteForChild(e)},tr.prototype.applyUserMerge_=function(r,i,t,o,s,a){var h=this,l=r;return t.foreach(function(t,e){var n=i.child(t);tr.cacheHasChild_(r,n.getFront())&&(l=h.applyUserOverwrite_(l,n,e,o,s,a))}),t.foreach(function(t,e){var n=i.child(t);tr.cacheHasChild_(r,n.getFront())||(l=h.applyUserOverwrite_(l,n,e,o,s,a))}),l},tr.prototype.applyMerge_=function(n,t){return t.foreach(function(t,e){n=n.updateChild(t,e)}),n},tr.prototype.applyServerMerge_=function(o,t,e,s,a,h,l){var u=this;if(o.getServerCache().getNode().isEmpty()&&!o.getServerCache().isFullyInitialized())return o;var n,c=o;n=t.isEmpty()?e:Dn.Empty.setTree(t,e);var p=o.getServerCache().getNode();return n.children.inorderTraversal(function(t,e){if(p.hasChild(t)){var n=o.getServerCache().getNode().getImmediateChild(t),r=u.applyMerge_(n,e);c=u.applyServerOverwrite_(c,new Nt(t),r,s,a,h,l)}}),n.children.inorderTraversal(function(t,e){var n=!o.getServerCache().isCompleteForChild(t)&&null==e.value;if(!p.hasChild(t)&&!n){var r=o.getServerCache().getNode().getImmediateChild(t),i=u.applyMerge_(r,e);c=u.applyServerOverwrite_(c,new Nt(t),i,s,a,h,l)}}),c},tr.prototype.ackUserWrite_=function(t,r,e,n,i,o){if(null!=n.shadowingWrite(r))return t;var s=t.getServerCache().isFiltered(),a=t.getServerCache();if(null!=e.value){if(r.isEmpty()&&a.isFullyInitialized()||a.isCompleteForPath(r))return this.applyServerOverwrite_(t,r,a.getNode().getChild(r),n,i,s,o);if(r.isEmpty()){var h=Dn.Empty;return a.getNode().forEachChild(ye,function(t,e){h=h.set(new Nt(t),e)}),this.applyServerMerge_(t,r,h,n,i,s,o)}return t}var l=Dn.Empty;return e.foreach(function(t,e){var n=r.child(t);a.isCompleteForPath(n)&&(l=l.set(t,a.getNode().getChild(n)))}),this.applyServerMerge_(t,r,l,n,i,s,o)},tr.prototype.listenComplete_=function(t,e,n,r){var i=t.getServerCache(),o=t.updateServerSnap(i.getNode(),i.isFullyInitialized()||e.isEmpty(),i.isFiltered());return this.generateEventCacheAfterServerEvent_(o,e,n,Gn,r)},tr.prototype.revertUserWrite_=function(t,e,n,r,i){var o;if(null!=n.shadowingWrite(e))return t;var s=new Xn(n,t,r),a=t.getEventCache().getNode(),h=void 0;if(e.isEmpty()||".priority"===e.getFront()){var l=void 0;if(t.getServerCache().isFullyInitialized())l=n.calcCompleteEventCache(t.getCompleteServerSnap());else{var u=t.getServerCache().getNode();C(u instanceof Ye,"serverChildren would be complete if leaf node"),l=n.calcCompleteEventChildren(u)}l=l,h=this.filter_.updateFullNode(a,l,i)}else{var c=e.getFront(),p=n.calcCompleteChild(c,t.getServerCache());null==p&&t.getServerCache().isCompleteForChild(c)&&(p=a.getImmediateChild(c)),(h=null!=p?this.filter_.updateChild(a,c,p,e.popFront(),s,i):t.getEventCache().getNode().hasChild(c)?this.filter_.updateChild(a,c,Ye.EMPTY_NODE,e.popFront(),s,i):a).isEmpty()&&t.getServerCache().isFullyInitialized()&&(o=n.calcCompleteEventCache(t.getCompleteServerSnap())).isLeafNode()&&(h=this.filter_.updateFullNode(h,o,i))}return o=t.getServerCache().isFullyInitialized()||null!=n.shadowingWrite(Nt.Empty),t.updateEventSnap(h,o,this.filter_.filtersNodes())},tr);function tr(t){this.filter_=t}var er=(nr.prototype.generateEventsForChanges=function(t,e,n){var r=this,i=[],o=[];return t.forEach(function(t){t.type===Vn.CHILD_CHANGED&&r.index_.indexedValueChanged(t.oldSnap,t.snapshotNode)&&o.push(Vn.childMovedChange(t.childName,t.snapshotNode))}),this.generateEventsForType_(i,Vn.CHILD_REMOVED,t,n,e),this.generateEventsForType_(i,Vn.CHILD_ADDED,t,n,e),this.generateEventsForType_(i,Vn.CHILD_MOVED,o,n,e),this.generateEventsForType_(i,Vn.CHILD_CHANGED,t,n,e),this.generateEventsForType_(i,Vn.VALUE,t,n,e),i},nr.prototype.generateEventsForType_=function(r,e,t,i,o){var s=this,n=t.filter(function(t){return t.type===e});n.sort(this.compareChanges_.bind(this)),n.forEach(function(e){var n=s.materializeSingleChange_(e,o);i.forEach(function(t){t.respondsTo(e.type)&&r.push(t.createEvent(n,s.query_))})})},nr.prototype.materializeSingleChange_=function(t,e){return"value"===t.type||"child_removed"===t.type||(t.prevName=e.getPredecessorChildName(t.childName,t.snapshotNode,this.index_)),t},nr.prototype.compareChanges_=function(t,e){if(null==t.childName||null==e.childName)throw c("Should only compare child_ events.");var n=new ae(t.childName,t.snapshotNode),r=new ae(e.childName,e.snapshotNode);return this.index_.compare(n,r)},nr);function nr(t){this.query_=t,this.index_=this.query_.getQueryParams().getIndex()}var rr,ir=(or.prototype.getQuery=function(){return this.query_},or.prototype.getServerCache=function(){return this.viewCache_.getServerCache().getNode()},or.prototype.getCompleteServerCache=function(t){var e=this.viewCache_.getCompleteServerSnap();return e&&(this.query_.getQueryParams().loadsAllData()||!t.isEmpty()&&!e.getImmediateChild(t.getFront()).isEmpty())?e.getChild(t):null},or.prototype.isEmpty=function(){return 0===this.eventRegistrations_.length},or.prototype.addEventRegistration=function(t){this.eventRegistrations_.push(t)},or.prototype.removeEventRegistration=function(t,n){var r=[];if(n){C(null==t,"A cancel should cancel all event registrations.");var i=this.query_.path;this.eventRegistrations_.forEach(function(t){n=n;var e=t.createCancelEvent(n,i);e&&r.push(e)})}if(t){for(var e=[],o=0;o<this.eventRegistrations_.length;++o){var s=this.eventRegistrations_[o];if(s.matches(t)){if(t.hasAnyCallback()){e=e.concat(this.eventRegistrations_.slice(o+1));break}}else e.push(s)}this.eventRegistrations_=e}else this.eventRegistrations_=[];return r},or.prototype.applyOperation=function(t,e,n){t.type===wn.MERGE&&null!==t.source.queryId&&(C(this.viewCache_.getCompleteServerSnap(),"We should always have a full cache before handling merges"),C(this.viewCache_.getCompleteEventSnap(),"Missing event cache, even though we have a server cache"));var r=this.viewCache_,i=this.processor_.applyOperation(r,t,e,n);return this.processor_.assertIndexed(i.viewCache),C(i.viewCache.getServerCache().isFullyInitialized()||!r.getServerCache().isFullyInitialized(),"Once a server snap is complete, it should never go back"),this.viewCache_=i.viewCache,this.generateEventsForChanges_(i.changes,i.viewCache.getEventCache().getNode(),null)},or.prototype.getInitialEvents=function(t){var e=this.viewCache_.getEventCache(),n=[];return e.getNode().isLeafNode()||e.getNode().forEachChild(Ie,function(t,e){n.push(Vn.childAddedChange(t,e))}),e.isFullyInitialized()&&n.push(Vn.valueChange(e.getNode())),this.generateEventsForChanges_(n,e.getNode(),t)},or.prototype.generateEventsForChanges_=function(t,e,n){var r=n?[n]:this.eventRegistrations_;return this.eventGenerator_.generateEventsForChanges(t,e,r)},or);function or(t,e){this.query_=t,this.eventRegistrations_=[];var n=this.query_.getQueryParams(),r=new Bn(n.getIndex()),i=n.getNodeFilter();this.processor_=new Zn(i);var o=e.getServerCache(),s=e.getEventCache(),a=r.updateFullNode(Ye.EMPTY_NODE,o.getNode(),null),h=i.updateFullNode(Ye.EMPTY_NODE,s.getNode(),null),l=new Wn(a,o.isFullyInitialized(),r.filtersNodes()),u=new Wn(h,s.isFullyInitialized(),i.filtersNodes());this.viewCache_=new qn(u,l),this.eventGenerator_=new er(this.query_)}var sr=(Object.defineProperty(ar,"__referenceConstructor",{get:function(){return C(rr,"Reference.ts has not been loaded"),rr},set:function(t){C(!rr,"__referenceConstructor has already been defined"),rr=t},enumerable:!0,configurable:!0}),ar.prototype.isEmpty=function(){return 0===this.views.size},ar.prototype.applyOperation=function(t,e,n){var r,i,o=t.source.queryId;if(null!==o){var s=this.views.get(o);return C(null!=s,"SyncTree gave us an op for an invalid query."),s.applyOperation(t,e,n)}var a=[];try{for(var h=f(this.views.values()),l=h.next();!l.done;l=h.next())s=l.value,a=a.concat(s.applyOperation(t,e,n))}catch(t){r={error:t}}finally{try{l&&!l.done&&(i=h.return)&&i.call(h)}finally{if(r)throw r.error}}return a},ar.prototype.addEventRegistration=function(t,e,n,r,i){var o=t.queryIdentifier(),s=this.views.get(o);if(!s){var a=n.calcCompleteEventCache(i?r:null),h=!1;h=!!a||(a=r instanceof Ye?n.calcCompleteEventChildren(r):Ye.EMPTY_NODE,!1);var l=new qn(new Wn(a,h,!1),new Wn(r,i,!1));s=new ir(t,l),this.views.set(o,s)}return s.addEventRegistration(e),s.getInitialEvents(e)},ar.prototype.removeEventRegistration=function(t,e,n){var r,i,o=t.queryIdentifier(),s=[],a=[],h=this.hasCompleteView();if("default"===o)try{for(var l=f(this.views.entries()),u=l.next();!u.done;u=l.next()){var c=_(u.value,2),p=c[0],d=c[1];a=a.concat(d.removeEventRegistration(e,n)),d.isEmpty()&&(this.views.delete(p),d.getQuery().getQueryParams().loadsAllData()||s.push(d.getQuery()))}}catch(t){r={error:t}}finally{try{u&&!u.done&&(i=l.return)&&i.call(l)}finally{if(r)throw r.error}}else(d=this.views.get(o))&&(a=a.concat(d.removeEventRegistration(e,n)),d.isEmpty()&&(this.views.delete(o),d.getQuery().getQueryParams().loadsAllData()||s.push(d.getQuery())));return h&&!this.hasCompleteView()&&s.push(new ar.__referenceConstructor(t.repo,t.path)),{removed:s,events:a}},ar.prototype.getQueryViews=function(){var e,t,n=[];try{for(var r=f(this.views.values()),i=r.next();!i.done;i=r.next()){var o=i.value;o.getQuery().getQueryParams().loadsAllData()||n.push(o)}}catch(t){e={error:t}}finally{try{i&&!i.done&&(t=r.return)&&t.call(r)}finally{if(e)throw e.error}}return n},ar.prototype.getCompleteServerCache=function(t){var e,n,r=null;try{for(var i=f(this.views.values()),o=i.next();!o.done;o=i.next()){var s=o.value;r=r||s.getCompleteServerCache(t)}}catch(t){e={error:t}}finally{try{o&&!o.done&&(n=i.return)&&n.call(i)}finally{if(e)throw e.error}}return r},ar.prototype.viewForQuery=function(t){if(t.getQueryParams().loadsAllData())return this.getCompleteView();var e=t.queryIdentifier();return this.views.get(e)},ar.prototype.viewExistsForQuery=function(t){return null!=this.viewForQuery(t)},ar.prototype.hasCompleteView=function(){return null!=this.getCompleteView()},ar.prototype.getCompleteView=function(){var e,t;try{for(var n=f(this.views.values()),r=n.next();!r.done;r=n.next()){var i=r.value;if(i.getQuery().getQueryParams().loadsAllData())return i}}catch(t){e={error:t}}finally{try{r&&!r.done&&(t=n.return)&&t.call(n)}finally{if(e)throw e.error}}return null},ar);function ar(){this.views=new Map}var hr=(lr.prototype.addWrite=function(t,e){if(t.isEmpty())return new lr(new Dn(e));var n=this.writeTree_.findRootMostValueAndPath(t);if(null!=n){var r=n.path,i=n.value,o=Nt.relativePath(r,t);return i=i.updateChild(o,e),new lr(this.writeTree_.set(r,i))}var s=new Dn(e);return new lr(this.writeTree_.setTree(t,s))},lr.prototype.addWrites=function(n,t){var r=this;return Et(t,function(t,e){r=r.addWrite(n.child(t),e)}),r},lr.prototype.removeWrite=function(t){return t.isEmpty()?lr.Empty:new lr(this.writeTree_.setTree(t,Dn.Empty))},lr.prototype.hasCompleteWrite=function(t){return null!=this.getCompleteNode(t)},lr.prototype.getCompleteNode=function(t){var e=this.writeTree_.findRootMostValueAndPath(t);return null!=e?this.writeTree_.get(e.path).getChild(Nt.relativePath(e.path,t)):null},lr.prototype.getCompleteChildren=function(){var n=[],t=this.writeTree_.value;return null!=t?t.isLeafNode()||t.forEachChild(Ie,function(t,e){n.push(new ae(t,e))}):this.writeTree_.children.inorderTraversal(function(t,e){null!=e.value&&n.push(new ae(t,e.value))}),n},lr.prototype.childCompoundWrite=function(t){if(t.isEmpty())return this;var e=this.getCompleteNode(t);return new lr(null!=e?new Dn(e):this.writeTree_.subtree(t))},lr.prototype.isEmpty=function(){return this.writeTree_.isEmpty()},lr.prototype.apply=function(t){return function n(r,t,i){if(null!=t.value)return i.updateChild(r,t.value);var o=null;return t.children.inorderTraversal(function(t,e){".priority"===t?(C(null!==e.value,"Priority writes must always be leaf nodes"),o=e.value):i=n(r.child(t),e,i)}),i.getChild(r).isEmpty()||null===o||(i=i.updateChild(r.child(".priority"),o)),i}(Nt.Empty,this.writeTree_,t)},lr.Empty=new lr(new Dn(null)),lr);function lr(t){this.writeTree_=t}var ur=(cr.prototype.childWrites=function(t){return new pr(t,this)},cr.prototype.addOverwrite=function(t,e,n,r){C(n>this.lastWriteId_,"Stacking an older write on top of newer ones"),void 0===r&&(r=!0),this.allWrites_.push({path:t,snap:e,writeId:n,visible:r}),r&&(this.visibleWrites_=this.visibleWrites_.addWrite(t,e)),this.lastWriteId_=n},cr.prototype.addMerge=function(t,e,n){C(n>this.lastWriteId_,"Stacking an older merge on top of newer ones"),this.allWrites_.push({path:t,children:e,writeId:n,visible:!0}),this.visibleWrites_=this.visibleWrites_.addWrites(t,e),this.lastWriteId_=n},cr.prototype.getWrite=function(t){for(var e=0;e<this.allWrites_.length;e++){var n=this.allWrites_[e];if(n.writeId===t)return n}return null},cr.prototype.removeWrite=function(e){var n=this,t=this.allWrites_.findIndex(function(t){return t.writeId===e});C(0<=t,"removeWrite called with nonexistent writeId.");var r=this.allWrites_[t];this.allWrites_.splice(t,1);for(var i=r.visible,o=!1,s=this.allWrites_.length-1;i&&0<=s;){var a=this.allWrites_[s];a.visible&&(t<=s&&this.recordContainsPath_(a,r.path)?i=!1:r.path.contains(a.path)&&(o=!0)),s--}return!!i&&(o?this.resetTree_():r.snap?this.visibleWrites_=this.visibleWrites_.removeWrite(r.path):Et(r.children,function(t){n.visibleWrites_=n.visibleWrites_.removeWrite(r.path.child(t))}),!0)},cr.prototype.getCompleteWriteData=function(t){return this.visibleWrites_.getCompleteNode(t)},cr.prototype.calcCompleteEventCache=function(e,t,n,r){if(n||r){var i=this.visibleWrites_.childCompoundWrite(e);if(!r&&i.isEmpty())return t;if(r||null!=t||i.hasCompleteWrite(Nt.Empty)){var o=cr.layerTree_(this.allWrites_,function(t){return(t.visible||r)&&(!n||!~n.indexOf(t.writeId))&&(t.path.contains(e)||e.contains(t.path))},e);return h=t||Ye.EMPTY_NODE,o.apply(h)}return null}var s=this.visibleWrites_.getCompleteNode(e);if(null!=s)return s;var a=this.visibleWrites_.childCompoundWrite(e);if(a.isEmpty())return t;if(null!=t||a.hasCompleteWrite(Nt.Empty)){var h=t||Ye.EMPTY_NODE;return a.apply(h)}return null},cr.prototype.calcCompleteEventChildren=function(t,e){var r=Ye.EMPTY_NODE,n=this.visibleWrites_.getCompleteNode(t);if(n)return n.isLeafNode()||n.forEachChild(Ie,function(t,e){r=r.updateImmediateChild(t,e)}),r;if(e){var i=this.visibleWrites_.childCompoundWrite(t);return e.forEachChild(Ie,function(t,e){var n=i.childCompoundWrite(new Nt(t)).apply(e);r=r.updateImmediateChild(t,n)}),i.getCompleteChildren().forEach(function(t){r=r.updateImmediateChild(t.name,t.node)}),r}return this.visibleWrites_.childCompoundWrite(t).getCompleteChildren().forEach(function(t){r=r.updateImmediateChild(t.name,t.node)}),r},cr.prototype.calcEventCacheAfterServerOverwrite=function(t,e,n,r){C(n||r,"Either existingEventSnap or existingServerSnap must exist");var i=t.child(e);if(this.visibleWrites_.hasCompleteWrite(i))return null;var o=this.visibleWrites_.childCompoundWrite(i);return o.isEmpty()?r.getChild(e):o.apply(r.getChild(e))},cr.prototype.calcCompleteChild=function(t,e,n){var r=t.child(e),i=this.visibleWrites_.getCompleteNode(r);return null!=i?i:n.isCompleteForChild(e)?this.visibleWrites_.childCompoundWrite(r).apply(n.getNode().getImmediateChild(e)):null},cr.prototype.shadowingWrite=function(t){return this.visibleWrites_.getCompleteNode(t)},cr.prototype.calcIndexedSlice=function(t,e,n,r,i,o){var s,a=this.visibleWrites_.childCompoundWrite(t),h=a.getCompleteNode(Nt.Empty);if(null!=h)s=h;else{if(null==e)return[];s=a.apply(e)}if((s=s.withIndex(o)).isEmpty()||s.isLeafNode())return[];for(var l=[],u=o.getCompare(),c=i?s.getReverseIteratorFrom(n,o):s.getIteratorFrom(n,o),p=c.getNext();p&&l.length<r;)0!==u(p,n)&&l.push(p),p=c.getNext();return l},cr.prototype.recordContainsPath_=function(t,e){if(t.snap)return t.path.contains(e);for(var n in t.children)if(t.children.hasOwnProperty(n)&&t.path.child(n).contains(e))return!0;return!1},cr.prototype.resetTree_=function(){this.visibleWrites_=cr.layerTree_(this.allWrites_,cr.DefaultFilter_,Nt.Empty),0<this.allWrites_.length?this.lastWriteId_=this.allWrites_[this.allWrites_.length-1].writeId:this.lastWriteId_=-1},cr.DefaultFilter_=function(t){return t.visible},cr.layerTree_=function(t,e,n){for(var r=hr.Empty,i=0;i<t.length;++i){var o=t[i];if(e(o)){var s=o.path,a=void 0;if(o.snap)n.contains(s)?(a=Nt.relativePath(n,s),r=r.addWrite(a,o.snap)):s.contains(n)&&(a=Nt.relativePath(s,n),r=r.addWrite(Nt.Empty,o.snap.getChild(a)));else{if(!o.children)throw c("WriteRecord should have .snap or .children");if(n.contains(s))a=Nt.relativePath(n,s),r=r.addWrites(a,o.children);else if(s.contains(n))if((a=Nt.relativePath(s,n)).isEmpty())r=r.addWrites(Nt.Empty,o.children);else{var h=R(o.children,a.getFront());if(h){var l=h.getChild(a.popFront());r=r.addWrite(Nt.Empty,l)}}}}}return r},cr);function cr(){this.visibleWrites_=hr.Empty,this.allWrites_=[],this.lastWriteId_=-1}var pr=(dr.prototype.calcCompleteEventCache=function(t,e,n){return this.writeTree_.calcCompleteEventCache(this.treePath_,t,e,n)},dr.prototype.calcCompleteEventChildren=function(t){return this.writeTree_.calcCompleteEventChildren(this.treePath_,t)},dr.prototype.calcEventCacheAfterServerOverwrite=function(t,e,n){return this.writeTree_.calcEventCacheAfterServerOverwrite(this.treePath_,t,e,n)},dr.prototype.shadowingWrite=function(t){return this.writeTree_.shadowingWrite(this.treePath_.child(t))},dr.prototype.calcIndexedSlice=function(t,e,n,r,i){return this.writeTree_.calcIndexedSlice(this.treePath_,t,e,n,r,i)},dr.prototype.calcCompleteChild=function(t,e){return this.writeTree_.calcCompleteChild(this.treePath_,t,e)},dr.prototype.child=function(t){return new dr(this.treePath_.child(t),this.writeTree_)},dr);function dr(t,e){this.treePath_=t,this.writeTree_=e}var fr=(_r.prototype.applyUserOverwrite=function(t,e,n,r){return this.pendingWriteTree_.addOverwrite(t,e,n,r),r?this.applyOperationToSyncPoints_(new Fn(Tn.User,t,e)):[]},_r.prototype.applyUserMerge=function(t,e,n){this.pendingWriteTree_.addMerge(t,e,n);var r=Dn.fromObject(e);return this.applyOperationToSyncPoints_(new Ln(Tn.User,t,r))},_r.prototype.ackUserWrite=function(t,e){void 0===e&&(e=!1);var n=this.pendingWriteTree_.getWrite(t);if(this.pendingWriteTree_.removeWrite(t)){var r=Dn.Empty;return null!=n.snap?r=r.set(Nt.Empty,!0):Et(n.children,function(t,e){r=r.set(new Nt(t),e)}),this.applyOperationToSyncPoints_(new Rn(n.path,r,e))}return[]},_r.prototype.applyServerOverwrite=function(t,e){return this.applyOperationToSyncPoints_(new Fn(Tn.Server,t,e))},_r.prototype.applyServerMerge=function(t,e){var n=Dn.fromObject(e);return this.applyOperationToSyncPoints_(new Ln(Tn.Server,t,n))},_r.prototype.applyListenComplete=function(t){return this.applyOperationToSyncPoints_(new xn(Tn.Server,t))},_r.prototype.applyTaggedQueryOverwrite=function(t,e,n){var r=this.queryKeyForTag_(n);if(null==r)return[];var i=_r.parseQueryKey_(r),o=i.path,s=i.queryId,a=Nt.relativePath(o,t),h=new Fn(Tn.forServerTaggedQuery(s),a,e);return this.applyTaggedOperation_(o,h)},_r.prototype.applyTaggedQueryMerge=function(t,e,n){var r=this.queryKeyForTag_(n);if(r){var i=_r.parseQueryKey_(r),o=i.path,s=i.queryId,a=Nt.relativePath(o,t),h=Dn.fromObject(e),l=new Ln(Tn.forServerTaggedQuery(s),a,h);return this.applyTaggedOperation_(o,l)}return[]},_r.prototype.applyTaggedListenComplete=function(t,e){var n=this.queryKeyForTag_(e);if(n){var r=_r.parseQueryKey_(n),i=r.path,o=r.queryId,s=Nt.relativePath(i,t),a=new xn(Tn.forServerTaggedQuery(o),s);return this.applyTaggedOperation_(i,a)}return[]},_r.prototype.addEventRegistration=function(t,e){var r=t.path,i=null,o=!1;this.syncPointTree_.foreachOnPath(r,function(t,e){var n=Nt.relativePath(t,r);i=i||e.getCompleteServerCache(n),o=o||e.hasCompleteView()});var n,s=this.syncPointTree_.get(r);s?(o=o||s.hasCompleteView(),i=i||s.getCompleteServerCache(Nt.Empty)):(s=new sr,this.syncPointTree_=this.syncPointTree_.set(r,s)),null!=i?n=!0:(n=!1,i=Ye.EMPTY_NODE,this.syncPointTree_.subtree(r).foreachChild(function(t,e){var n=e.getCompleteServerCache(Nt.Empty);n&&(i=i.updateImmediateChild(t,n))}));var a=s.viewExistsForQuery(t);if(!a&&!t.getQueryParams().loadsAllData()){var h=_r.makeQueryKey_(t);C(!this.queryToTagMap.has(h),"View does not exist, but we have a tag");var l=_r.getNextQueryTag_();this.queryToTagMap.set(h,l),this.tagToQueryMap.set(l,h)}var u=this.pendingWriteTree_.childWrites(r),c=s.addEventRegistration(t,e,u,i,n);if(!a&&!o){var p=s.viewForQuery(t);c=c.concat(this.setupListener_(t,p))}return c},_r.prototype.removeEventRegistration=function(t,e,n){var r=this,i=t.path,o=this.syncPointTree_.get(i),s=[];if(o&&("default"===t.queryIdentifier()||o.viewExistsForQuery(t))){var a=o.removeEventRegistration(t,e,n);o.isEmpty()&&(this.syncPointTree_=this.syncPointTree_.remove(i));var h=a.removed;s=a.events;var l=-1!==h.findIndex(function(t){return t.getQueryParams().loadsAllData()}),u=this.syncPointTree_.findOnPath(i,function(t,e){return e.hasCompleteView()});if(l&&!u){var c=this.syncPointTree_.subtree(i);if(!c.isEmpty())for(var p=this.collectDistinctViewsForSubTree_(c),d=0;d<p.length;++d){var f=p[d],_=f.getQuery(),y=this.createListenerForView_(f);this.listenProvider_.startListening(_r.queryForListening_(_),this.tagForQuery_(_),y.hashFn,y.onComplete)}}!u&&0<h.length&&!n&&(l?this.listenProvider_.stopListening(_r.queryForListening_(t),null):h.forEach(function(t){var e=r.queryToTagMap.get(_r.makeQueryKey_(t));r.listenProvider_.stopListening(_r.queryForListening_(t),e)})),this.removeTags_(h)}return s},_r.prototype.calcCompleteEventCache=function(i,t){var e=this.pendingWriteTree_,n=this.syncPointTree_.findOnPath(i,function(t,e){var n=Nt.relativePath(t,i),r=e.getCompleteServerCache(n);if(r)return r});return e.calcCompleteEventCache(i,n,t,!0)},_r.prototype.collectDistinctViewsForSubTree_=function(t){return t.fold(function(t,e,n){if(e&&e.hasCompleteView())return[e.getCompleteView()];var r=[];return e&&(r=e.getQueryViews()),Et(n,function(t,e){r=r.concat(e)}),r})},_r.prototype.removeTags_=function(t){for(var e=0;e<t.length;++e){var n=t[e];if(!n.getQueryParams().loadsAllData()){var r=_r.makeQueryKey_(n),i=this.queryToTagMap.get(r);this.queryToTagMap.delete(r),this.tagToQueryMap.delete(i)}}},_r.queryForListening_=function(t){return t.getQueryParams().loadsAllData()&&!t.getQueryParams().isDefault()?t.getRef():t},_r.prototype.setupListener_=function(t,e){var n=t.path,r=this.tagForQuery_(t),i=this.createListenerForView_(e),o=this.listenProvider_.startListening(_r.queryForListening_(t),r,i.hashFn,i.onComplete),s=this.syncPointTree_.subtree(n);if(r)C(!s.value.hasCompleteView(),"If we're adding a query, it shouldn't be shadowed");else for(var a=s.fold(function(t,e,n){if(!t.isEmpty()&&e&&e.hasCompleteView())return[e.getCompleteView().getQuery()];var r=[];return e&&(r=r.concat(e.getQueryViews().map(function(t){return t.getQuery()}))),Et(n,function(t,e){r=r.concat(e)}),r}),h=0;h<a.length;++h){var l=a[h];this.listenProvider_.stopListening(_r.queryForListening_(l),this.tagForQuery_(l))}return o},_r.prototype.createListenerForView_=function(t){var n=this,r=t.getQuery(),i=this.tagForQuery_(r);return{hashFn:function(){return(t.getServerCache()||Ye.EMPTY_NODE).hash()},onComplete:function(t){if("ok"===t)return i?n.applyTaggedListenComplete(r.path,i):n.applyListenComplete(r.path);var e=function(t,e){var n="Unknown Error";"too_big"===t?n="The data requested exceeds the maximum size that can be accessed with a single request.":"permission_denied"===t?n="Client doesn't have permission to access the desired data.":"unavailable"===t&&(n="The service is unavailable");var r=new Error(t+" at "+e.path.toString()+": "+n);return r.code=t.toUpperCase(),r}(t,r);return n.removeEventRegistration(r,null,e)}}},_r.makeQueryKey_=function(t){return t.path.toString()+"$"+t.queryIdentifier()},_r.parseQueryKey_=function(t){var e=t.indexOf("$");return C(-1!==e&&e<t.length-1,"Bad queryKey."),{queryId:t.substr(e+1),path:new Nt(t.substr(0,e))}},_r.prototype.queryKeyForTag_=function(t){return this.tagToQueryMap.get(t)},_r.prototype.tagForQuery_=function(t){var e=_r.makeQueryKey_(t);return this.queryToTagMap.get(e)},_r.getNextQueryTag_=function(){return _r.nextQueryTag_++},_r.prototype.applyTaggedOperation_=function(t,e){var n=this.syncPointTree_.get(t);C(n,"Missing sync point for query tag that we're tracking");var r=this.pendingWriteTree_.childWrites(t);return n.applyOperation(e,r,null)},_r.prototype.applyOperationToSyncPoints_=function(t){return this.applyOperationHelper_(t,this.syncPointTree_,null,this.pendingWriteTree_.childWrites(Nt.Empty))},_r.prototype.applyOperationHelper_=function(t,e,n,r){if(t.path.isEmpty())return this.applyOperationDescendantsHelper_(t,e,n,r);var i=e.get(Nt.Empty);null==n&&null!=i&&(n=i.getCompleteServerCache(Nt.Empty));var o=[],s=t.path.getFront(),a=t.operationForChild(s),h=e.children.get(s);if(h&&a){var l=n?n.getImmediateChild(s):null,u=r.child(s);o=o.concat(this.applyOperationHelper_(a,h,l,u))}return i&&(o=o.concat(i.applyOperation(t,r,n))),o},_r.prototype.applyOperationDescendantsHelper_=function(o,t,s,a){var h=this,e=t.get(Nt.Empty);null==s&&null!=e&&(s=e.getCompleteServerCache(Nt.Empty));var l=[];return t.children.inorderTraversal(function(t,e){var n=s?s.getImmediateChild(t):null,r=a.child(t),i=o.operationForChild(t);i&&(l=l.concat(h.applyOperationDescendantsHelper_(i,e,n,r)))}),e&&(l=l.concat(e.applyOperation(o,a,s))),l},_r.nextQueryTag_=1,_r);function _r(t){this.listenProvider_=t,this.syncPointTree_=Dn.Empty,this.pendingWriteTree_=new ur,this.tagToQueryMap=new Map,this.queryToTagMap=new Map}var yr=(vr.prototype.getNode=function(t){return this.rootNode_.getChild(t)},vr.prototype.updateSnapshot=function(t,e){this.rootNode_=this.rootNode_.updateChild(t,e)},vr);function vr(){this.rootNode_=Ye.EMPTY_NODE}var gr=(mr.prototype.getToken=function(t){return this.auth_?this.auth_.getToken(t).catch(function(t){return t&&"auth/token-not-initialized"===t.code?(tt("Got auth/token-not-initialized error.  Treating as null token."),null):Promise.reject(t)}):Promise.resolve(null)},mr.prototype.addTokenChangeListener=function(e){this.auth_?this.auth_.addAuthTokenListener(e):(setTimeout(function(){return e(null)},0),this.authProvider_.get().then(function(t){return t.addAuthTokenListener(e)}))},mr.prototype.removeTokenChangeListener=function(e){this.authProvider_.get().then(function(t){return t.removeAuthTokenListener(e)})},mr.prototype.notifyForInvalidToken=function(){var t='Provided authentication credentials for the app named "'+this.app_.name+'" are invalid. This usually indicates your app was not initialized correctly. ';"credential"in this.app_.options?t+='Make sure the "credential" property provided to initializeApp() is authorized to access the specified "databaseURL" and is from the correct project.':"serviceAccount"in this.app_.options?t+='Make sure the "serviceAccount" property provided to initializeApp() is authorized to access the specified "databaseURL" and is from the correct project.':t+='Make sure the "apiKey" and "databaseURL" properties provided to initializeApp() match the values provided for your app at https://console.firebase.google.com/.',it(t)},mr);function mr(t,e){var n=this;this.app_=t,this.authProvider_=e,this.auth_=null,this.auth_=e.getImmediate({optional:!0}),this.auth_||e.get().then(function(t){return n.auth_=t})}var Cr=(Er.prototype.incrementCounter=function(t,e){void 0===e&&(e=1),N(this.counters_,t)||(this.counters_[t]=0),this.counters_[t]+=e},Er.prototype.get=function(){return n(this.counters_)},Er);function Er(){this.counters_={}}var wr=(br.getCollection=function(t){var e=t.toString();return this.collections_[e]||(this.collections_[e]=new Cr),this.collections_[e]},br.getOrCreateReporter=function(t,e){var n=t.toString();return this.reporters_[n]||(this.reporters_[n]=e()),this.reporters_[n]},br.collections_={},br.reporters_={},br);function br(){}var Sr=(Tr.prototype.get=function(){var t=this.collection_.get(),n=u({},t);return this.last_&&Et(this.last_,function(t,e){n[t]=n[t]-e}),this.last_=t,n},Tr);function Tr(t){this.collection_=t,this.last_=null}var Ir=(Nr.prototype.includeStat=function(t){this.statsToReport_[t]=!0},Nr.prototype.reportStats_=function(){var n=this,t=this.statsListener_.get(),r={},i=!1;Et(t,function(t,e){0<e&&N(n.statsToReport_,t)&&(r[t]=e,i=!0)}),i&&this.server_.reportStats(r),St(this.reportStats_.bind(this),Math.floor(2*Math.random()*3e5))},Nr);function Nr(t,e){this.server_=e,this.statsToReport_={},this.statsListener_=new Sr(t);var n=1e4+2e4*Math.random();St(this.reportStats_.bind(this),Math.floor(n))}var Rr=(Pr.prototype.queueEvents=function(t){for(var e=null,n=0;n<t.length;n++){var r=t[n],i=r.getPath();null===e||i.equals(e.getPath())||(this.eventLists_.push(e),e=null),null===e&&(e=new Dr(i)),e.add(r)}e&&this.eventLists_.push(e)},Pr.prototype.raiseEventsAtPath=function(e,t){this.queueEvents(t),this.raiseQueuedEventsMatchingPredicate_(function(t){return t.equals(e)})},Pr.prototype.raiseEventsForChangedPath=function(e,t){this.queueEvents(t),this.raiseQueuedEventsMatchingPredicate_(function(t){return t.contains(e)||e.contains(t)})},Pr.prototype.raiseQueuedEventsMatchingPredicate_=function(t){this.recursionDepth_++;for(var e=!0,n=0;n<this.eventLists_.length;n++){var r=this.eventLists_[n];r&&(t(r.getPath())?(this.eventLists_[n].raise(),this.eventLists_[n]=null):e=!1)}e&&(this.eventLists_=[]),this.recursionDepth_--},Pr);function Pr(){this.eventLists_=[],this.recursionDepth_=0}var Dr=(Or.prototype.add=function(t){this.events_.push(t)},Or.prototype.raise=function(){for(var t=0;t<this.events_.length;t++){var e=this.events_[t];if(null!==e){this.events_[t]=null;var n=e.getEventRunner();_t&&tt("event: "+e.toString()),bt(n)}}},Or.prototype.getPath=function(){return this.path_},Or);function Or(t){this.path_=t,this.events_=[]}var xr=(kr.prototype.trigger=function(t){for(var e=[],n=1;n<arguments.length;n++)e[n-1]=arguments[n];if(Array.isArray(this.listeners_[t]))for(var r=o(this.listeners_[t]),i=0;i<r.length;i++)r[i].callback.apply(r[i].context,e)},kr.prototype.on=function(t,e,n){this.validateEventType_(t),this.listeners_[t]=this.listeners_[t]||[],this.listeners_[t].push({callback:e,context:n});var r=this.getInitialEvent(t);r&&e.apply(n,r)},kr.prototype.off=function(t,e,n){this.validateEventType_(t);for(var r=this.listeners_[t]||[],i=0;i<r.length;i++)if(r[i].callback===e&&(!n||n===r[i].context))return void r.splice(i,1)},kr.prototype.validateEventType_=function(e){C(this.allowedEvents_.find(function(t){return t===e}),"Unknown event: "+e)},kr);function kr(t){this.allowedEvents_=t,this.listeners_={},C(Array.isArray(t)&&0<t.length,"Requires a non-empty array")}var Fr,Ar=(t(Lr,Fr=xr),Lr.getInstance=function(){return new Lr},Lr.prototype.getInitialEvent=function(t){return C("visible"===t,"Unknown event type: "+t),[this.visible_]},Lr);function Lr(){var e,t,n=Fr.call(this,["visible"])||this;return"undefined"!=typeof document&&void 0!==document.addEventListener&&(void 0!==document.hidden?(t="visibilitychange",e="hidden"):void 0!==document.mozHidden?(t="mozvisibilitychange",e="mozHidden"):void 0!==document.msHidden?(t="msvisibilitychange",e="msHidden"):void 0!==document.webkitHidden&&(t="webkitvisibilitychange",e="webkitHidden")),n.visible_=!0,t&&document.addEventListener(t,function(){var t=!document[e];t!==n.visible_&&(n.visible_=t,n.trigger("visible",t))},!1),n}var Mr,Wr=(t(Qr,Mr=xr),Qr.getInstance=function(){return new Qr},Qr.prototype.getInitialEvent=function(t){return C("online"===t,"Unknown event type: "+t),[this.online_]},Qr.prototype.currentlyOnline=function(){return this.online_},Qr);function Qr(){var t=Mr.call(this,["online"])||this;return t.online_=!0,"undefined"==typeof window||void 0===window.addEventListener||d()||(window.addEventListener("online",function(){t.online_||(t.online_=!0,t.trigger("online",!0))},!1),window.addEventListener("offline",function(){t.online_&&(t.online_=!1,t.trigger("online",!1))},!1)),t}var qr=(Ur.prototype.closeAfter=function(t,e){this.closeAfterResponse=t,this.onClose=e,this.closeAfterResponse<this.currentResponseNum&&(this.onClose(),this.onClose=null)},Ur.prototype.handleResponse=function(t,e){var r=this;this.pendingResponses[t]=e;for(var n=function(){var e=i.pendingResponses[i.currentResponseNum];delete i.pendingResponses[i.currentResponseNum];for(var t=function(t){e[t]&&bt(function(){r.onMessage_(e[t])})},n=0;n<e.length;++n)t(n);if(i.currentResponseNum===i.closeAfterResponse)return i.onClose&&(i.onClose(),i.onClose=null),"break";i.currentResponseNum++},i=this;this.pendingResponses[this.currentResponseNum]&&"break"!==n(););},Ur);function Ur(t){this.onMessage_=t,this.pendingResponses=[],this.currentResponseNum=0,this.closeAfterResponse=-1,this.onClose=null}var Vr=(Hr.prototype.open=function(t,e){var s=this;this.curSegmentNum=0,this.onDisconnect_=e,this.myPacketOrderer=new qr(t),this.isClosed_=!1,this.connectTimeoutTimer_=setTimeout(function(){s.log_("Timed out trying to connect."),s.onClosed_(),s.connectTimeoutTimer_=null},Math.floor(3e4)),function(t){if("complete"===document.readyState)t();else{var e=!1,n=function(){document.body?e||(e=!0,t()):setTimeout(n,Math.floor(10))};document.addEventListener?(document.addEventListener("DOMContentLoaded",n,!1),window.addEventListener("load",n,!1)):document.attachEvent&&(document.attachEvent("onreadystatechange",function(){"complete"===document.readyState&&n()}),window.attachEvent("onload",n))}}(function(){if(!s.isClosed_){s.scriptTagHolder=new Br(function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];var n=_(t,5),r=n[0],i=n[1],o=n[2];if(n[3],n[4],s.incrementIncomingBytes_(t),s.scriptTagHolder)if(s.connectTimeoutTimer_&&(clearTimeout(s.connectTimeoutTimer_),s.connectTimeoutTimer_=null),s.everConnected_=!0,"start"===r)s.id=i,s.password=o;else{if("close"!==r)throw new Error("Unrecognized command received: "+r);i?(s.scriptTagHolder.sendNewPolls=!1,s.myPacketOrderer.closeAfter(i,function(){s.onClosed_()})):s.onClosed_()}},function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];var n=_(t,2),r=n[0],i=n[1];s.incrementIncomingBytes_(t),s.myPacketOrderer.handleResponse(r,i)},function(){s.onClosed_()},s.urlFn);var t={start:"t"};t.ser=Math.floor(1e8*Math.random()),s.scriptTagHolder.uniqueCallbackIdentifier&&(t.cb=s.scriptTagHolder.uniqueCallbackIdentifier),t.v="5",s.transportSessionId&&(t.s=s.transportSessionId),s.lastSessionId&&(t.ls=s.lastSessionId),"undefined"!=typeof location&&location.href&&-1!==location.href.indexOf(Ot)&&(t.r="f");var e=s.urlFn(t);s.log_("Connecting via long-poll to "+e),s.scriptTagHolder.addTag(e,function(){})}})},Hr.prototype.start=function(){this.scriptTagHolder.startLongPoll(this.id,this.password),this.addDisconnectPingFrame(this.id,this.password)},Hr.forceAllow=function(){Hr.forceAllow_=!0},Hr.forceDisallow=function(){Hr.forceDisallow_=!0},Hr.isAvailable=function(){return!!Hr.forceAllow_||!(Hr.forceDisallow_||"undefined"==typeof document||null==document.createElement||"object"==typeof window&&window.chrome&&window.chrome.extension&&!/^chrome/.test(window.location.href)||"object"==typeof Windows&&"object"==typeof Windows.UI)},Hr.prototype.markConnectionHealthy=function(){},Hr.prototype.shutdown_=function(){this.isClosed_=!0,this.scriptTagHolder&&(this.scriptTagHolder.close(),this.scriptTagHolder=null),this.myDisconnFrame&&(document.body.removeChild(this.myDisconnFrame),this.myDisconnFrame=null),this.connectTimeoutTimer_&&(clearTimeout(this.connectTimeoutTimer_),this.connectTimeoutTimer_=null)},Hr.prototype.onClosed_=function(){this.isClosed_||(this.log_("Longpoll is closing itself"),this.shutdown_(),this.onDisconnect_&&(this.onDisconnect_(this.everConnected_),this.onDisconnect_=null))},Hr.prototype.close=function(){this.isClosed_||(this.log_("Longpoll is being closed."),this.shutdown_())},Hr.prototype.send=function(t){var e=T(t);this.bytesSent+=e.length,this.stats_.incrementCounter("bytes_sent",e.length);for(var n=function(t){var e=s(t);return l.encodeByteArray(e,!0)}(e),r=ht(n,1840),i=0;i<r.length;i++)this.scriptTagHolder.enqueueSegment(this.curSegmentNum,r.length,r[i]),this.curSegmentNum++},Hr.prototype.addDisconnectPingFrame=function(t,e){this.myDisconnFrame=document.createElement("iframe");var n={dframe:"t"};n.id=t,n.pw=e,this.myDisconnFrame.src=this.urlFn(n),this.myDisconnFrame.style.display="none",document.body.appendChild(this.myDisconnFrame)},Hr.prototype.incrementIncomingBytes_=function(t){var e=T(t).length;this.bytesReceived+=e,this.stats_.incrementCounter("bytes_received",e)},Hr);function Hr(t,e,n,r){this.connId=t,this.repoInfo=e,this.transportSessionId=n,this.lastSessionId=r,this.bytesSent=0,this.bytesReceived=0,this.everConnected_=!1,this.log_=et(t),this.stats_=wr.getCollection(e),this.urlFn=function(t){return e.connectionURL(kt,t)}}var Br=(jr.createIFrame_=function(){var e=document.createElement("iframe");if(e.style.display="none",!document.body)throw"Document body has not initialized. Wait to initialize Firebase until after the document is ready.";document.body.appendChild(e);try{e.contentWindow.document||tt("No IE domain setting required")}catch(t){var n=document.domain;e.src="javascript:void((function(){document.open();document.domain='"+n+"';document.close();})())"}return e.contentDocument?e.doc=e.contentDocument:e.contentWindow?e.doc=e.contentWindow.document:e.document&&(e.doc=e.document),e},jr.prototype.close=function(){var t=this;this.alive=!1,this.myIFrame&&(this.myIFrame.doc.body.innerHTML="",setTimeout(function(){null!==t.myIFrame&&(document.body.removeChild(t.myIFrame),t.myIFrame=null)},Math.floor(0)));var e=this.onDisconnect;e&&(this.onDisconnect=null,e())},jr.prototype.startLongPoll=function(t,e){for(this.myID=t,this.myPW=e,this.alive=!0;this.newRequest_(););},jr.prototype.newRequest_=function(){if(this.alive&&this.sendNewPolls&&this.outstandingRequests.size<(0<this.pendingSegs.length?2:1)){this.currentSerial++;var t={};t.id=this.myID,t.pw=this.myPW,t.ser=this.currentSerial;for(var e=this.urlFn(t),n="",r=0;0<this.pendingSegs.length&&this.pendingSegs[0].d.length+30+n.length<=1870;){var i=this.pendingSegs.shift();n=n+"&seg"+r+"="+i.seg+"&ts"+r+"="+i.ts+"&d"+r+"="+i.d,r++}return e+=n,this.addLongPollTag_(e,this.currentSerial),!0}return!1},jr.prototype.enqueueSegment=function(t,e,n){this.pendingSegs.push({seg:t,ts:e,d:n}),this.alive&&this.newRequest_()},jr.prototype.addLongPollTag_=function(t,e){var n=this;function r(){n.outstandingRequests.delete(e),n.newRequest_()}this.outstandingRequests.add(e);var i=setTimeout(r,Math.floor(25e3));this.addTag(t,function(){clearTimeout(i),r()})},jr.prototype.addTag=function(t,n){var r=this;setTimeout(function(){try{if(!r.sendNewPolls)return;var e=r.myIFrame.doc.createElement("script");e.type="text/javascript",e.async=!0,e.src=t,e.onload=e.onreadystatechange=function(){var t=e.readyState;t&&"loaded"!==t&&"complete"!==t||(e.onload=e.onreadystatechange=null,e.parentNode&&e.parentNode.removeChild(e),n())},e.onerror=function(){tt("Long-poll script failed to load: "+t),r.sendNewPolls=!1,r.close()},r.myIFrame.doc.body.appendChild(e)}catch(t){}},Math.floor(1))},jr);function jr(t,e,n,r){this.onDisconnect=n,this.urlFn=r,this.outstandingRequests=new Set,this.pendingSegs=[],this.currentSerial=Math.floor(1e8*Math.random()),this.sendNewPolls=!0,this.uniqueCallbackIdentifier=dt(),window["pLPCommand"+this.uniqueCallbackIdentifier]=t,window["pRTLPCB"+this.uniqueCallbackIdentifier]=e,this.myIFrame=jr.createIFrame_();var i="";this.myIFrame.src&&"javascript:"===this.myIFrame.src.substr(0,"javascript:".length)&&(i='<script>document.domain="'+document.domain+'";<\/script>');var o="<html><body>"+i+"</body></html>";try{this.myIFrame.doc.open(),this.myIFrame.doc.write(o),this.myIFrame.doc.close()}catch(t){tt("frame writing exception"),t.stack&&tt(t.stack),tt(t)}}var Kr="";var Yr=null;"undefined"!=typeof MozWebSocket?Yr=MozWebSocket:"undefined"!=typeof WebSocket&&(Yr=WebSocket);var zr=(Gr.connectionURL_=function(t,e,n){var r={v:"5"};return"undefined"!=typeof location&&location.href&&-1!==location.href.indexOf(Ot)&&(r.r="f"),e&&(r.s=e),n&&(r.ls=n),t.connectionURL(xt,r)},Gr.prototype.open=function(t,e){var n=this;this.onDisconnect=e,this.onMessage=t,this.log_("Websocket connecting to "+this.connURL),this.everConnected_=!1,ut.set("previous_websocket_failure",!0);try{if(y()){var r=h.NODE_ADMIN?"AdminNode":"Node",i={headers:{"User-Agent":"Firebase/5/"+Kr+"/"+process.platform+"/"+r}},o=process.env,s=0===this.connURL.indexOf("wss://")?o.HTTPS_PROXY||o.https_proxy:o.HTTP_PROXY||o.http_proxy;s&&(i.proxy={origin:s}),this.mySock=new Yr(this.connURL,[],i)}else this.mySock=new Yr(this.connURL)}catch(t){this.log_("Error instantiating WebSocket.");var a=t.message||t.data;return a&&this.log_(a),void this.onClosed_()}this.mySock.onopen=function(){n.log_("Websocket connected."),n.everConnected_=!0},this.mySock.onclose=function(){n.log_("Websocket connection was disconnected."),n.mySock=null,n.onClosed_()},this.mySock.onmessage=function(t){n.handleIncomingFrame(t)},this.mySock.onerror=function(t){n.log_("WebSocket error.  Closing connection.");var e=t.message||t.data;e&&n.log_(e),n.onClosed_()}},Gr.prototype.start=function(){},Gr.forceDisallow=function(){Gr.forceDisallow_=!0},Gr.isAvailable=function(){var t=!1;if("undefined"!=typeof navigator&&navigator.userAgent){var e=navigator.userAgent.match(/Android ([0-9]{0,}\.[0-9]{0,})/);e&&1<e.length&&parseFloat(e[1])<4.4&&(t=!0)}return!t&&null!==Yr&&!Gr.forceDisallow_},Gr.previouslyFailed=function(){return ut.isInMemoryStorage||!0===ut.get("previous_websocket_failure")},Gr.prototype.markConnectionHealthy=function(){ut.remove("previous_websocket_failure")},Gr.prototype.appendFrame_=function(t){if(this.frames.push(t),this.frames.length===this.totalFrames){var e=this.frames.join("");this.frames=null;var n=S(e);this.onMessage(n)}},Gr.prototype.handleNewFrameCount_=function(t){this.totalFrames=t,this.frames=[]},Gr.prototype.extractFrameCount_=function(t){if(C(null===this.frames,"We already have a frame buffer"),t.length<=6){var e=Number(t);if(!isNaN(e))return this.handleNewFrameCount_(e),null}return this.handleNewFrameCount_(1),t},Gr.prototype.handleIncomingFrame=function(t){if(null!==this.mySock){var e=t.data;if(this.bytesReceived+=e.length,this.stats_.incrementCounter("bytes_received",e.length),this.resetKeepAlive(),null!==this.frames)this.appendFrame_(e);else{var n=this.extractFrameCount_(e);null!==n&&this.appendFrame_(n)}}},Gr.prototype.send=function(t){this.resetKeepAlive();var e=T(t);this.bytesSent+=e.length,this.stats_.incrementCounter("bytes_sent",e.length);var n=ht(e,16384);1<n.length&&this.sendString_(String(n.length));for(var r=0;r<n.length;r++)this.sendString_(n[r])},Gr.prototype.shutdown_=function(){this.isClosed_=!0,this.keepaliveTimer&&(clearInterval(this.keepaliveTimer),this.keepaliveTimer=null),this.mySock&&(this.mySock.close(),this.mySock=null)},Gr.prototype.onClosed_=function(){this.isClosed_||(this.log_("WebSocket is closing itself"),this.shutdown_(),this.onDisconnect&&(this.onDisconnect(this.everConnected_),this.onDisconnect=null))},Gr.prototype.close=function(){this.isClosed_||(this.log_("WebSocket is being closed"),this.shutdown_())},Gr.prototype.resetKeepAlive=function(){var t=this;clearInterval(this.keepaliveTimer),this.keepaliveTimer=setInterval(function(){t.mySock&&t.sendString_("0"),t.resetKeepAlive()},Math.floor(45e3))},Gr.prototype.sendString_=function(t){try{this.mySock.send(t)}catch(t){this.log_("Exception thrown from WebSocket.send():",t.message||t.data,"Closing connection."),setTimeout(this.onClosed_.bind(this),0)}},Gr.responsesRequiredToBeHealthy=2,Gr.healthyTimeout=3e4,Gr);function Gr(t,e,n,r){this.connId=t,this.keepaliveTimer=null,this.frames=null,this.totalFrames=0,this.bytesSent=0,this.bytesReceived=0,this.log_=et(this.connId),this.stats_=wr.getCollection(e),this.connURL=Gr.connectionURL_(e,n,r)}var Xr=(Object.defineProperty($r,"ALL_TRANSPORTS",{get:function(){return[Vr,zr]},enumerable:!0,configurable:!0}),$r.prototype.initTransports_=function(t){var e,n,r=zr&&zr.isAvailable(),i=r&&!zr.previouslyFailed();if(t.webSocketOnly&&(r||it("wss:// URL used, but browser isn't known to support websockets.  Trying anyway."),i=!0),i)this.transports_=[zr];else{var o=this.transports_=[];try{for(var s=f($r.ALL_TRANSPORTS),a=s.next();!a.done;a=s.next()){var h=a.value;h&&h.isAvailable()&&o.push(h)}}catch(t){e={error:t}}finally{try{a&&!a.done&&(n=s.return)&&n.call(s)}finally{if(e)throw e.error}}}},$r.prototype.initialTransport=function(){if(0<this.transports_.length)return this.transports_[0];throw new Error("No transports available")},$r.prototype.upgradeTransport=function(){return 1<this.transports_.length?this.transports_[1]:null},$r);function $r(t){this.initTransports_(t)}var Jr=(Zr.prototype.start_=function(){var t=this,e=this.transportManager_.initialTransport();this.conn_=new e(this.nextTransportId_(),this.repoInfo_,void 0,this.lastSessionId),this.primaryResponsesRequired_=e.responsesRequiredToBeHealthy||0;var n=this.connReceiver_(this.conn_),r=this.disconnReceiver_(this.conn_);this.tx_=this.conn_,this.rx_=this.conn_,this.secondaryConn_=null,this.isHealthy_=!1,setTimeout(function(){t.conn_&&t.conn_.open(n,r)},Math.floor(0));var i=e.healthyTimeout||0;0<i&&(this.healthyTimeout_=St(function(){t.healthyTimeout_=null,t.isHealthy_||(t.conn_&&102400<t.conn_.bytesReceived?(t.log_("Connection exceeded healthy timeout but has received "+t.conn_.bytesReceived+" bytes.  Marking connection healthy."),t.isHealthy_=!0,t.conn_.markConnectionHealthy()):t.conn_&&10240<t.conn_.bytesSent?t.log_("Connection exceeded healthy timeout but has sent "+t.conn_.bytesSent+" bytes.  Leaving connection alive."):(t.log_("Closing unhealthy connection after timeout."),t.close()))},Math.floor(i)))},Zr.prototype.nextTransportId_=function(){return"c:"+this.id+":"+this.connectionCount++},Zr.prototype.disconnReceiver_=function(e){var n=this;return function(t){e===n.conn_?n.onConnectionLost_(t):e===n.secondaryConn_?(n.log_("Secondary connection lost."),n.onSecondaryConnectionLost_()):n.log_("closing an old connection")}},Zr.prototype.connReceiver_=function(e){var n=this;return function(t){2!==n.state_&&(e===n.rx_?n.onPrimaryMessageReceived_(t):e===n.secondaryConn_?n.onSecondaryMessageReceived_(t):n.log_("message on old connection"))}},Zr.prototype.sendRequest=function(t){var e={t:"d",d:t};this.sendData_(e)},Zr.prototype.tryCleanupConnection=function(){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)},Zr.prototype.onSecondaryControl_=function(t){if("t"in t){var e=t.t;"a"===e?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_())}},Zr.prototype.onSecondaryMessageReceived_=function(t){var e=at("t",t),n=at("d",t);if("c"===e)this.onSecondaryControl_(n);else{if("d"!==e)throw new Error("Unknown protocol layer: "+e);this.pendingDataMessages.push(n)}},Zr.prototype.upgradeIfSecondaryHealthy_=function(){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:{}}}))},Zr.prototype.proceedWithUpgrade_=function(){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()},Zr.prototype.onPrimaryMessageReceived_=function(t){var e=at("t",t),n=at("d",t);"c"===e?this.onControl_(n):"d"===e&&this.onDataMessage_(n)},Zr.prototype.onDataMessage_=function(t){this.onPrimaryResponse_(),this.onMessage_(t)},Zr.prototype.onPrimaryResponse_=function(){this.isHealthy_||(this.primaryResponsesRequired_--,this.primaryResponsesRequired_<=0&&(this.log_("Primary connection is healthy."),this.isHealthy_=!0,this.conn_.markConnectionHealthy()))},Zr.prototype.onControl_=function(t){var e=at("t",t);if("d"in t){var n=t.d;if("h"===e)this.onHandshake_(n);else if("n"===e){this.log_("recvd end transmission on primary"),this.rx_=this.secondaryConn_;for(var r=0;r<this.pendingDataMessages.length;++r)this.onDataMessage_(this.pendingDataMessages[r]);this.pendingDataMessages=[],this.tryCleanupConnection()}else"s"===e?this.onConnectionShutdown_(n):"r"===e?this.onReset_(n):"e"===e?nt("Server Error: "+n):"o"===e?(this.log_("got pong on primary."),this.onPrimaryResponse_(),this.sendPingOnPrimaryIfNecessary_()):nt("Unknown control packet command: "+e)}},Zr.prototype.onHandshake_=function(t){var e=t.ts,n=t.v,r=t.h;this.sessionId=t.s,this.repoInfo_.updateHost(r),0===this.state_&&(this.conn_.start(),this.onConnectionEstablished_(this.conn_,e),"5"!==n&&it("Protocol version mismatch detected"),this.tryStartUpgrade_())},Zr.prototype.tryStartUpgrade_=function(){var t=this.transportManager_.upgradeTransport();t&&this.startUpgrade_(t)},Zr.prototype.startUpgrade_=function(t){var e=this;this.secondaryConn_=new t(this.nextTransportId_(),this.repoInfo_,this.sessionId),this.secondaryResponsesRequired_=t.responsesRequiredToBeHealthy||0;var n=this.connReceiver_(this.secondaryConn_),r=this.disconnReceiver_(this.secondaryConn_);this.secondaryConn_.open(n,r),St(function(){e.secondaryConn_&&(e.log_("Timed out trying to upgrade."),e.secondaryConn_.close())},Math.floor(6e4))},Zr.prototype.onReset_=function(t){this.log_("Reset packet received.  New host: "+t),this.repoInfo_.updateHost(t),1===this.state_?this.close():(this.closeConnections_(),this.start_())},Zr.prototype.onConnectionEstablished_=function(t,e){var n=this;this.log_("Realtime connection established."),this.conn_=t,this.state_=1,this.onReady_&&(this.onReady_(e,this.sessionId),this.onReady_=null),0===this.primaryResponsesRequired_?(this.log_("Primary connection is healthy."),this.isHealthy_=!0):St(function(){n.sendPingOnPrimaryIfNecessary_()},Math.floor(5e3))},Zr.prototype.sendPingOnPrimaryIfNecessary_=function(){this.isHealthy_||1!==this.state_||(this.log_("sending ping on primary."),this.sendData_({t:"c",d:{t:"p",d:{}}}))},Zr.prototype.onSecondaryConnectionLost_=function(){var t=this.secondaryConn_;this.secondaryConn_=null,this.tx_!==t&&this.rx_!==t||this.close()},Zr.prototype.onConnectionLost_=function(t){this.conn_=null,t||0!==this.state_?1===this.state_&&this.log_("Realtime connection lost."):(this.log_("Realtime connection failed."),this.repoInfo_.isCacheableHost()&&(ut.remove("host:"+this.repoInfo_.host),this.repoInfo_.internalHost=this.repoInfo_.host)),this.close()},Zr.prototype.onConnectionShutdown_=function(t){this.log_("Connection shutdown command received. Shutting down..."),this.onKill_&&(this.onKill_(t),this.onKill_=null),this.onDisconnect_=null,this.close()},Zr.prototype.sendData_=function(t){if(1!==this.state_)throw"Connection is not connected";this.tx_.send(t)},Zr.prototype.close=function(){2!==this.state_&&(this.log_("Closing realtime connection."),this.state_=2,this.closeConnections_(),this.onDisconnect_&&(this.onDisconnect_(),this.onDisconnect_=null))},Zr.prototype.closeConnections_=function(){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)},Zr);function Zr(t,e,n,r,i,o,s){this.id=t,this.repoInfo_=e,this.onMessage_=n,this.onReady_=r,this.onDisconnect_=i,this.onKill_=o,this.lastSessionId=s,this.connectionCount=0,this.pendingDataMessages=[],this.state_=0,this.log_=et("c:"+this.id+":"),this.transportManager_=new Xr(e),this.log_("Connection created"),this.start_()}var ti=(ei.prototype.put=function(t,e,n,r){},ei.prototype.merge=function(t,e,n,r){},ei.prototype.refreshAuthToken=function(t){},ei.prototype.onDisconnectPut=function(t,e,n){},ei.prototype.onDisconnectMerge=function(t,e,n){},ei.prototype.onDisconnectCancel=function(t,e){},ei.prototype.reportStats=function(t){},ei);function ei(){}var ni,ri=(t(ii,ni=ti),ii.prototype.sendRequest=function(t,e,n){var r=++this.requestNumber_,i={r:r,a:t,b:e};this.log_(T(i)),C(this.connected_,"sendRequest call when we're not connected not allowed."),this.realtime_.sendRequest(i),n&&(this.requestCBHash_[r]=n)},ii.prototype.listen=function(t,e,n,r){var i=t.queryIdentifier(),o=t.path.toString();this.log_("Listen called for "+o+" "+i),this.listens.has(o)||this.listens.set(o,new Map),C(t.getQueryParams().isDefault()||!t.getQueryParams().loadsAllData(),"listen() called for non-default but complete query"),C(!this.listens.get(o).has(i),"listen() called twice for same path/queryId.");var s={onComplete:r,hashFn:e,query:t,tag:n};this.listens.get(o).set(i,s),this.connected_&&this.sendListen_(s)},ii.prototype.sendListen_=function(r){var i=this,o=r.query,s=o.path.toString(),a=o.queryIdentifier();this.log_("Listen on "+s+" for "+a);var t={p:s};r.tag&&(t.q=o.queryObject(),t.t=r.tag),t.h=r.hashFn(),this.sendRequest("q",t,function(t){var e=t.d,n=t.s;ii.warnOnListenWarnings_(e,o),(i.listens.get(s)&&i.listens.get(s).get(a))===r&&(i.log_("listen response",t),"ok"!==n&&i.removeListen_(s,a),r.onComplete&&r.onComplete(n,e))})},ii.warnOnListenWarnings_=function(t,e){if(t&&"object"==typeof t&&N(t,"w")){var n=R(t,"w");if(Array.isArray(n)&&~n.indexOf("no_index")){var r='".indexOn": "'+e.getQueryParams().getIndex().toString()+'"',i=e.path.toString();it("Using an unspecified index. Your data will be downloaded and filtered on the client. Consider adding "+r+" at "+i+" to your security rules for better performance.")}}},ii.prototype.refreshAuthToken=function(t){this.authToken_=t,this.log_("Auth token refreshed"),this.authToken_?this.tryAuth():this.connected_&&this.sendRequest("unauth",{},function(){}),this.reduceReconnectDelayIfAdminCredential_(t)},ii.prototype.reduceReconnectDelayIfAdminCredential_=function(t){(t&&40===t.length||function(t){var e=I(t).claims;return"object"==typeof e&&!0===e.admin}(t))&&(this.log_("Admin auth credential detected.  Reducing max reconnect time."),this.maxReconnectDelay_=3e4)},ii.prototype.tryAuth=function(){var r=this;if(this.connected_&&this.authToken_){var i=this.authToken_,t=function(t){var e=I(t).claims;return!!e&&"object"==typeof e&&e.hasOwnProperty("iat")}(i)?"auth":"gauth",e={cred:i};null===this.authOverride_?e.noauth=!0:"object"==typeof this.authOverride_&&(e.authvar=this.authOverride_),this.sendRequest(t,e,function(t){var e=t.s,n=t.d||"error";r.authToken_===i&&("ok"===e?r.invalidAuthTokenCount_=0:r.onAuthRevoked_(e,n))})}},ii.prototype.unlisten=function(t,e){var n=t.path.toString(),r=t.queryIdentifier();this.log_("Unlisten called for "+n+" "+r),C(t.getQueryParams().isDefault()||!t.getQueryParams().loadsAllData(),"unlisten() called for non-default but complete query"),this.removeListen_(n,r)&&this.connected_&&this.sendUnlisten_(n,r,t.queryObject(),e)},ii.prototype.sendUnlisten_=function(t,e,n,r){this.log_("Unlisten on "+t+" for "+e);var i={p:t};r&&(i.q=n,i.t=r),this.sendRequest("n",i)},ii.prototype.onDisconnectPut=function(t,e,n){this.connected_?this.sendOnDisconnect_("o",t,e,n):this.onDisconnectRequestQueue_.push({pathString:t,action:"o",data:e,onComplete:n})},ii.prototype.onDisconnectMerge=function(t,e,n){this.connected_?this.sendOnDisconnect_("om",t,e,n):this.onDisconnectRequestQueue_.push({pathString:t,action:"om",data:e,onComplete:n})},ii.prototype.onDisconnectCancel=function(t,e){this.connected_?this.sendOnDisconnect_("oc",t,null,e):this.onDisconnectRequestQueue_.push({pathString:t,action:"oc",data:null,onComplete:e})},ii.prototype.sendOnDisconnect_=function(t,e,n,r){var i={p:e,d:n};this.log_("onDisconnect "+t,i),this.sendRequest(t,i,function(t){r&&setTimeout(function(){r(t.s,t.d)},Math.floor(0))})},ii.prototype.put=function(t,e,n,r){this.putInternal("p",t,e,n,r)},ii.prototype.merge=function(t,e,n,r){this.putInternal("m",t,e,n,r)},ii.prototype.putInternal=function(t,e,n,r,i){var o={p:e,d:n};void 0!==i&&(o.h=i),this.outstandingPuts_.push({action:t,request:o,onComplete:r}),this.outstandingPutCount_++;var s=this.outstandingPuts_.length-1;this.connected_?this.sendPut_(s):this.log_("Buffering put: "+e)},ii.prototype.sendPut_=function(e){var n=this,r=this.outstandingPuts_[e].action,t=this.outstandingPuts_[e].request,i=this.outstandingPuts_[e].onComplete;this.outstandingPuts_[e].queued=this.connected_,this.sendRequest(r,t,function(t){n.log_(r+" response",t),delete n.outstandingPuts_[e],n.outstandingPutCount_--,0===n.outstandingPutCount_&&(n.outstandingPuts_=[]),i&&i(t.s,t.d)})},ii.prototype.reportStats=function(t){var n=this;if(this.connected_){var e={c:t};this.log_("reportStats",e),this.sendRequest("s",e,function(t){if("ok"!==t.s){var e=t.d;n.log_("reportStats","Error sending stats: "+e)}})}},ii.prototype.onDataMessage_=function(t){if("r"in t){this.log_("from server: "+T(t));var e=t.r,n=this.requestCBHash_[e];n&&(delete this.requestCBHash_[e],n(t.b))}else{if("error"in t)throw"A server-side error has occurred: "+t.error;"a"in t&&this.onDataPush_(t.a,t.b)}},ii.prototype.onDataPush_=function(t,e){this.log_("handleServerMessage",t,e),"d"===t?this.onDataUpdate_(e.p,e.d,!1,e.t):"m"===t?this.onDataUpdate_(e.p,e.d,!0,e.t):"c"===t?this.onListenRevoked_(e.p,e.q):"ac"===t?this.onAuthRevoked_(e.s,e.d):"sd"===t?this.onSecurityDebugPacket_(e):nt("Unrecognized action received from server: "+T(t)+"\nAre you using the latest client?")},ii.prototype.onReady_=function(t,e){this.log_("connection ready"),this.connected_=!0,this.lastConnectionEstablishedTime_=(new Date).getTime(),this.handleTimestamp_(t),this.lastSessionId=e,this.firstConnection_&&this.sendConnectStats_(),this.restoreState_(),this.firstConnection_=!1,this.onConnectStatus_(!0)},ii.prototype.scheduleConnect_=function(t){var e=this;C(!this.realtime_,"Scheduling a connect when we're already connected/ing?"),this.establishConnectionTimer_&&clearTimeout(this.establishConnectionTimer_),this.establishConnectionTimer_=setTimeout(function(){e.establishConnectionTimer_=null,e.establishConnection_()},Math.floor(t))},ii.prototype.onVisible_=function(t){t&&!this.visible_&&this.reconnectDelay_===this.maxReconnectDelay_&&(this.log_("Window became visible.  Reducing delay."),this.reconnectDelay_=1e3,this.realtime_||this.scheduleConnect_(0)),this.visible_=t},ii.prototype.onOnline_=function(t){t?(this.log_("Browser went online."),this.reconnectDelay_=1e3,this.realtime_||this.scheduleConnect_(0)):(this.log_("Browser went offline.  Killing connection."),this.realtime_&&this.realtime_.close())},ii.prototype.onRealtimeDisconnect_=function(){if(this.log_("data client disconnected"),this.connected_=!1,this.realtime_=null,this.cancelSentTransactions_(),this.requestCBHash_={},this.shouldReconnect_()){this.visible_?this.lastConnectionEstablishedTime_&&(3e4<(new Date).getTime()-this.lastConnectionEstablishedTime_&&(this.reconnectDelay_=1e3),this.lastConnectionEstablishedTime_=null):(this.log_("Window isn't visible.  Delaying reconnect."),this.reconnectDelay_=this.maxReconnectDelay_,this.lastConnectionAttemptTime_=(new Date).getTime());var t=(new Date).getTime()-this.lastConnectionAttemptTime_,e=Math.max(0,this.reconnectDelay_-t);e=Math.random()*e,this.log_("Trying to reconnect in "+e+"ms"),this.scheduleConnect_(e),this.reconnectDelay_=Math.min(this.maxReconnectDelay_,1.3*this.reconnectDelay_)}this.onConnectStatus_(!1)},ii.prototype.establishConnection_=function(){if(this.shouldReconnect_()){this.log_("Making a connection attempt"),this.lastConnectionAttemptTime_=(new Date).getTime(),this.lastConnectionEstablishedTime_=null;var e=this.onDataMessage_.bind(this),n=this.onReady_.bind(this),r=this.onRealtimeDisconnect_.bind(this),i=this.id+":"+ii.nextConnectionId_++,o=this,s=this.lastSessionId,a=!1,h=null,l=function(){h?h.close():(a=!0,r())};this.realtime_={close:l,sendRequest:function(t){C(h,"sendRequest call when we're not connected not allowed."),h.sendRequest(t)}};var t=this.forceTokenRefresh_;this.forceTokenRefresh_=!1,this.authTokenProvider_.getToken(t).then(function(t){a?tt("getToken() completed but was canceled"):(tt("getToken() completed. Creating connection."),o.authToken_=t&&t.accessToken,h=new Jr(i,o.repoInfo_,e,n,r,function(t){it(t+" ("+o.repoInfo_.toString()+")"),o.interrupt("server_kill")},s))}).then(null,function(t){o.log_("Failed to get token: "+t),a||l()})}},ii.prototype.interrupt=function(t){tt("Interrupting connection for reason: "+t),this.interruptReasons_[t]=!0,this.realtime_?this.realtime_.close():(this.establishConnectionTimer_&&(clearTimeout(this.establishConnectionTimer_),this.establishConnectionTimer_=null),this.connected_&&this.onRealtimeDisconnect_())},ii.prototype.resume=function(t){tt("Resuming connection for reason: "+t),delete this.interruptReasons_[t],P(this.interruptReasons_)&&(this.reconnectDelay_=1e3,this.realtime_||this.scheduleConnect_(0))},ii.prototype.handleTimestamp_=function(t){var e=t-(new Date).getTime();this.onServerInfoUpdate_({serverTimeOffset:e})},ii.prototype.cancelSentTransactions_=function(){for(var t=0;t<this.outstandingPuts_.length;t++){var e=this.outstandingPuts_[t];e&&"h"in e.request&&e.queued&&(e.onComplete&&e.onComplete("disconnect"),delete this.outstandingPuts_[t],this.outstandingPutCount_--)}0===this.outstandingPutCount_&&(this.outstandingPuts_=[])},ii.prototype.onListenRevoked_=function(t,e){var n;n=e?e.map(function(t){return Ct(t)}).join("$"):"default";var r=this.removeListen_(t,n);r&&r.onComplete&&r.onComplete("permission_denied")},ii.prototype.removeListen_=function(t,e){var n,r=new Nt(t).toString();if(this.listens.has(r)){var i=this.listens.get(r);n=i.get(e),i.delete(e),0===i.size&&this.listens.delete(r)}else n=void 0;return n},ii.prototype.onAuthRevoked_=function(t,e){tt("Auth token revoked: "+t+"/"+e),this.authToken_=null,this.forceTokenRefresh_=!0,this.realtime_.close(),"invalid_token"!==t&&"permission_denied"!==t||(this.invalidAuthTokenCount_++,3<=this.invalidAuthTokenCount_&&(this.reconnectDelay_=3e4,this.authTokenProvider_.notifyForInvalidToken()))},ii.prototype.onSecurityDebugPacket_=function(t){this.securityDebugCallback_?this.securityDebugCallback_(t):"msg"in t&&console.log("FIREBASE: "+t.msg.replace("\n","\nFIREBASE: "))},ii.prototype.restoreState_=function(){var e,t,n,r;this.tryAuth();try{for(var i=f(this.listens.values()),o=i.next();!o.done;o=i.next()){var s=o.value;try{for(var a=(n=void 0,f(s.values())),h=a.next();!h.done;h=a.next()){var l=h.value;this.sendListen_(l)}}catch(t){n={error:t}}finally{try{h&&!h.done&&(r=a.return)&&r.call(a)}finally{if(n)throw n.error}}}}catch(t){e={error:t}}finally{try{o&&!o.done&&(t=i.return)&&t.call(i)}finally{if(e)throw e.error}}for(var u=0;u<this.outstandingPuts_.length;u++)this.outstandingPuts_[u]&&this.sendPut_(u);for(;this.onDisconnectRequestQueue_.length;){var c=this.onDisconnectRequestQueue_.shift();this.sendOnDisconnect_(c.action,c.pathString,c.data,c.onComplete)}},ii.prototype.sendConnectStats_=function(){var t={};t["sdk.js."+Kr.replace(/\./g,"-")]=1,d()?t["framework.cordova"]=1:"object"==typeof navigator&&"ReactNative"===navigator.product&&(t["framework.reactnative"]=1),this.reportStats(t)},ii.prototype.shouldReconnect_=function(){var t=Wr.getInstance().currentlyOnline();return P(this.interruptReasons_)&&t},ii.nextPersistentConnectionId_=0,ii.nextConnectionId_=0,ii);function ii(t,e,n,r,i,o){var s=ni.call(this)||this;if(s.repoInfo_=t,s.onDataUpdate_=e,s.onConnectStatus_=n,s.onServerInfoUpdate_=r,s.authTokenProvider_=i,s.authOverride_=o,s.id=ii.nextPersistentConnectionId_++,s.log_=et("p:"+s.id+":"),s.interruptReasons_={},s.listens=new Map,s.outstandingPuts_=[],s.outstandingPutCount_=0,s.onDisconnectRequestQueue_=[],s.connected_=!1,s.reconnectDelay_=1e3,s.maxReconnectDelay_=3e5,s.securityDebugCallback_=null,s.lastSessionId=null,s.establishConnectionTimer_=null,s.visible_=!1,s.requestCBHash_={},s.requestNumber_=0,s.realtime_=null,s.authToken_=null,s.forceTokenRefresh_=!1,s.invalidAuthTokenCount_=0,s.firstConnection_=!0,s.lastConnectionAttemptTime_=null,s.lastConnectionEstablishedTime_=null,o&&!y())throw new Error("Auth override specified in options, but not supported on non Node.js platforms");return s.scheduleConnect_(0),Ar.getInstance().on("visible",s.onVisible_,s),-1===t.host.indexOf("fblocal")&&Wr.getInstance().on("online",s.onOnline_,s),s}var oi,si=(t(ai,oi=ti),ai.prototype.reportStats=function(t){throw new Error("Method not implemented.")},ai.getListenId_=function(t,e){return void 0!==e?"tag$"+e:(C(t.getQueryParams().isDefault(),"should have a tag if it's not a default query."),t.path.toString())},ai.prototype.listen=function(t,e,r,i){var o=this,s=t.path.toString();this.log_("Listen called for "+s+" "+t.queryIdentifier());var a=ai.getListenId_(t,r),h={};this.listens_[a]=h;var n=t.getQueryParams().toRestQueryStringParameters();this.restRequest_(s+".json",n,function(t,e){var n=e;404===t&&(t=n=null),null===t&&o.onDataUpdate_(s,n,!1,r),R(o.listens_,a)===h&&i(t?401===t?"permission_denied":"rest_error:"+t:"ok",null)})},ai.prototype.unlisten=function(t,e){var n=ai.getListenId_(t,e);delete this.listens_[n]},ai.prototype.refreshAuthToken=function(t){},ai.prototype.restRequest_=function(i,o,s){var a=this;void 0===o&&(o={}),o.format="export",this.authTokenProvider_.getToken(!1).then(function(t){var e=t&&t.accessToken;e&&(o.auth=e);var n=(a.repoInfo_.secure?"https://":"http://")+a.repoInfo_.host+i+"?ns="+a.repoInfo_.namespace+function(t){for(var n=[],e=function(e,t){Array.isArray(t)?t.forEach(function(t){n.push(encodeURIComponent(e)+"="+encodeURIComponent(t))}):n.push(encodeURIComponent(e)+"="+encodeURIComponent(t))},r=0,i=Object.entries(t);r<i.length;r++){var o=i[r];e(o[0],o[1])}return n.length?"&"+n.join("&"):""}(o);a.log_("Sending REST request for "+n);var r=new XMLHttpRequest;r.onreadystatechange=function(){if(s&&4===r.readyState){a.log_("REST Response for "+n+" received. status:",r.status,"response:",r.responseText);var t=null;if(200<=r.status&&r.status<300){try{t=S(r.responseText)}catch(t){it("Failed to parse JSON response for "+n+": "+r.responseText)}s(null,t)}else 401!==r.status&&404!==r.status&&it("Got unsuccessful REST response for "+n+" Status: "+r.status),s(r.status);s=null}},r.open("GET",n,!0),r.send()})},ai);function ai(t,e,n){var r=oi.call(this)||this;return r.repoInfo_=t,r.onDataUpdate_=e,r.authTokenProvider_=n,r.log_=et("p:rest:"),r.listens_={},r}var hi="repo_interrupt",li=(ui.prototype.toString=function(){return(this.repoInfo_.secure?"https://":"http://")+this.repoInfo_.host},ui.prototype.name=function(){return this.repoInfo_.namespace},ui.prototype.serverTime=function(){var t=this.infoData_.getNode(new Nt(".info/serverTimeOffset")).val()||0;return(new Date).getTime()+t},ui.prototype.generateServerValues=function(){return function(t){return(t=t||{}).timestamp=t.timestamp||(new Date).getTime(),t}({timestamp:this.serverTime()})},ui.prototype.onDataUpdate_=function(t,e,n,r){this.dataUpdateCount++;var i=new Nt(t);e=this.interceptServerDataCallback_?this.interceptServerDataCallback_(t,e):e;var o=[];if(r)if(n){var s=D(e,function(t){return Ze(t)});o=this.serverSyncTree_.applyTaggedQueryMerge(i,s,r)}else{var a=Ze(e);o=this.serverSyncTree_.applyTaggedQueryOverwrite(i,a,r)}else if(n){var h=D(e,function(t){return Ze(t)});o=this.serverSyncTree_.applyServerMerge(i,h)}else{var l=Ze(e);o=this.serverSyncTree_.applyServerOverwrite(i,l)}var u=i;0<o.length&&(u=this.rerunTransactions_(i)),this.eventQueue_.raiseEventsForChangedPath(u,o)},ui.prototype.interceptServerData_=function(t){this.interceptServerDataCallback_=t},ui.prototype.onConnectStatus_=function(t){this.updateInfo_("connected",t),!1===t&&this.runOnDisconnectEvents_()},ui.prototype.onServerInfoUpdate_=function(t){var n=this;Et(t,function(t,e){n.updateInfo_(t,e)})},ui.prototype.updateInfo_=function(t,e){var n=new Nt("/.info/"+t),r=Ze(e);this.infoData_.updateSnapshot(n,r);var i=this.infoSyncTree_.applyServerOverwrite(n,r);this.eventQueue_.raiseEventsForChangedPath(n,i)},ui.prototype.getNextWriteId_=function(){return this.nextWriteId_++},ui.prototype.setWithPriority=function(i,t,e,o){var s=this;this.log_("set",{path:i.toString(),value:t,priority:e});var n=this.generateServerValues(),r=Ze(t,e),a=Sn(r,n),h=this.getNextWriteId_(),l=this.serverSyncTree_.applyUserOverwrite(i,a,h,!0);this.eventQueue_.queueEvents(l),this.server_.put(i.toString(),r.val(!0),function(t,e){var n="ok"===t;n||it("set at "+i+" failed: "+t);var r=s.serverSyncTree_.ackUserWrite(h,!n);s.eventQueue_.raiseEventsForChangedPath(i,r),s.callOnCompleteCallback(o,t,e)});var u=this.abortTransactions_(i);this.rerunTransactions_(u),this.eventQueue_.raiseEventsForChangedPath(u,[])},ui.prototype.update=function(o,t,s){var a=this;this.log_("update",{path:o.toString(),value:t});var r=!0,i=this.generateServerValues(),h={};if(Et(t,function(t,e){r=!1;var n=Ze(e);h[t]=Sn(n,i)}),r)tt("update() called with empty data.  Don't do anything."),this.callOnCompleteCallback(s,"ok");else{var l=this.getNextWriteId_(),e=this.serverSyncTree_.applyUserMerge(o,h,l);this.eventQueue_.queueEvents(e),this.server_.merge(o.toString(),t,function(t,e){var n="ok"===t;n||it("update at "+o+" failed: "+t);var r=a.serverSyncTree_.ackUserWrite(l,!n),i=0<r.length?a.rerunTransactions_(o):o;a.eventQueue_.raiseEventsForChangedPath(i,r),a.callOnCompleteCallback(s,t,e)}),Et(t,function(t){var e=a.abortTransactions_(o.child(t));a.rerunTransactions_(e)}),this.eventQueue_.raiseEventsForChangedPath(o,[])}},ui.prototype.runOnDisconnectEvents_=function(){var r=this;this.log_("onDisconnectEvents");var t=this.generateServerValues(),e=function(t,n){var r=new mn;return t.forEachTree(new Nt(""),function(t,e){r.remember(t,Sn(e,n))}),r}(this.onDisconnect_,t),i=[];e.forEachTree(Nt.Empty,function(t,e){i=i.concat(r.serverSyncTree_.applyServerOverwrite(t,e));var n=r.abortTransactions_(t);r.rerunTransactions_(n)}),this.onDisconnect_=new mn,this.eventQueue_.raiseEventsForChangedPath(Nt.Empty,i)},ui.prototype.onDisconnectCancel=function(n,r){var i=this;this.server_.onDisconnectCancel(n.toString(),function(t,e){"ok"===t&&i.onDisconnect_.forget(n),i.callOnCompleteCallback(r,t,e)})},ui.prototype.onDisconnectSet=function(n,t,r){var i=this,o=Ze(t);this.server_.onDisconnectPut(n.toString(),o.val(!0),function(t,e){"ok"===t&&i.onDisconnect_.remember(n,o),i.callOnCompleteCallback(r,t,e)})},ui.prototype.onDisconnectSetWithPriority=function(n,t,e,r){var i=this,o=Ze(t,e);this.server_.onDisconnectPut(n.toString(),o.val(!0),function(t,e){"ok"===t&&i.onDisconnect_.remember(n,o),i.callOnCompleteCallback(r,t,e)})},ui.prototype.onDisconnectUpdate=function(r,n,i){var o=this;if(P(n))return tt("onDisconnect().update() called with empty data.  Don't do anything."),void this.callOnCompleteCallback(i,"ok");this.server_.onDisconnectMerge(r.toString(),n,function(t,e){"ok"===t&&Et(n,function(t,e){var n=Ze(e);o.onDisconnect_.remember(r.child(t),n)}),o.callOnCompleteCallback(i,t,e)})},ui.prototype.addEventCallbackForQuery=function(t,e){var n;n=".info"===t.path.getFront()?this.infoSyncTree_.addEventRegistration(t,e):this.serverSyncTree_.addEventRegistration(t,e),this.eventQueue_.raiseEventsAtPath(t.path,n)},ui.prototype.removeEventCallbackForQuery=function(t,e){var n;n=".info"===t.path.getFront()?this.infoSyncTree_.removeEventRegistration(t,e):this.serverSyncTree_.removeEventRegistration(t,e),this.eventQueue_.raiseEventsAtPath(t.path,n)},ui.prototype.interrupt=function(){this.persistentConnection_&&this.persistentConnection_.interrupt(hi)},ui.prototype.resume=function(){this.persistentConnection_&&this.persistentConnection_.resume(hi)},ui.prototype.stats=function(t){if(void 0===t&&(t=!1),"undefined"!=typeof console){var e;e=t?(this.statsListener_||(this.statsListener_=new Sr(this.stats_)),this.statsListener_.get()):this.stats_.get();var i=Object.keys(e).reduce(function(t,e){return Math.max(e.length,t)},0);Et(e,function(t,e){for(var n=t,r=t.length;r<i+2;r++)n+=" ";console.log(n+e)})}},ui.prototype.statsIncrementCounter=function(t){this.stats_.incrementCounter(t),this.statsReporter_.includeStat(t)},ui.prototype.log_=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];var n="";this.persistentConnection_&&(n=this.persistentConnection_.id+":"),tt.apply(void 0,o([n],t))},ui.prototype.callOnCompleteCallback=function(r,i,o){r&&bt(function(){if("ok"===i)r(null);else{var t=(i||"error").toUpperCase(),e=t;o&&(e+=": "+o);var n=new Error(e);n.code=t,r(n)}})},Object.defineProperty(ui.prototype,"database",{get:function(){return this.__database||(this.__database=new Pi(this))},enumerable:!0,configurable:!0}),ui);function ui(t,e,n,r){var s=this;this.repoInfo_=t,this.app=n,this.dataUpdateCount=0,this.statsListener_=null,this.eventQueue_=new Rr,this.nextWriteId_=1,this.interceptServerDataCallback_=null,this.onDisconnect_=new mn,this.persistentConnection_=null;var i=new gr(n,r);if(this.stats_=wr.getCollection(t),e||0<=("object"==typeof window&&window.navigator&&window.navigator.userAgent||"").search(/googlebot|google webmaster tools|bingbot|yahoo! slurp|baiduspider|yandexbot|duckduckbot/i))this.server_=new si(this.repoInfo_,this.onDataUpdate_.bind(this),i),setTimeout(this.onConnectStatus_.bind(this,!0),0);else{var o=n.options.databaseAuthVariableOverride;if(null!=o){if("object"!=typeof o)throw new Error("Only objects are supported for option databaseAuthVariableOverride");try{T(o)}catch(t){throw new Error("Invalid authOverride provided: "+t)}}this.persistentConnection_=new ri(this.repoInfo_,this.onDataUpdate_.bind(this),this.onConnectStatus_.bind(this),this.onServerInfoUpdate_.bind(this),i,o),this.server_=this.persistentConnection_}i.addTokenChangeListener(function(t){s.server_.refreshAuthToken(t)}),this.statsReporter_=wr.getOrCreateReporter(t,function(){return new Ir(s.stats_,s.server_)}),this.transactionsInit_(),this.infoData_=new yr,this.infoSyncTree_=new fr({startListening:function(t,e,n,r){var i=[],o=s.infoData_.getNode(t.path);return o.isEmpty()||(i=s.infoSyncTree_.applyServerOverwrite(t.path,o),setTimeout(function(){r("ok")},0)),i},stopListening:function(){}}),this.updateInfo_("connected",!1),this.serverSyncTree_=new fr({startListening:function(r,t,e,i){return s.server_.listen(r,e,t,function(t,e){var n=i(t,e);s.eventQueue_.raiseEventsForChangedPath(r.path,n)}),[]},stopListening:function(t,e){s.server_.unlisten(t,e)}})}var ci=(pi.prototype.getStartPost=function(){return this.startPost_},pi.prototype.getEndPost=function(){return this.endPost_},pi.prototype.matches=function(t){return this.index_.compare(this.getStartPost(),t)<=0&&this.index_.compare(t,this.getEndPost())<=0},pi.prototype.updateChild=function(t,e,n,r,i,o){return this.matches(new ae(e,n))||(n=Ye.EMPTY_NODE),this.indexedFilter_.updateChild(t,e,n,r,i,o)},pi.prototype.updateFullNode=function(t,e,n){e.isLeafNode()&&(e=Ye.EMPTY_NODE);var r=e.withIndex(this.index_);r=r.updatePriority(Ye.EMPTY_NODE);var i=this;return e.forEachChild(Ie,function(t,e){i.matches(new ae(t,e))||(r=r.updateImmediateChild(t,Ye.EMPTY_NODE))}),this.indexedFilter_.updateFullNode(t,r,n)},pi.prototype.updatePriority=function(t,e){return t},pi.prototype.filtersNodes=function(){return!0},pi.prototype.getIndexedFilter=function(){return this.indexedFilter_},pi.prototype.getIndex=function(){return this.index_},pi.getStartPost_=function(t){if(t.hasStart()){var e=t.getIndexStartName();return t.getIndex().makePost(t.getIndexStartValue(),e)}return t.getIndex().minPost()},pi.getEndPost_=function(t){if(t.hasEnd()){var e=t.getIndexEndName();return t.getIndex().makePost(t.getIndexEndValue(),e)}return t.getIndex().maxPost()},pi);function pi(t){this.indexedFilter_=new Bn(t.getIndex()),this.index_=t.getIndex(),this.startPost_=pi.getStartPost_(t),this.endPost_=pi.getEndPost_(t)}var di=(fi.prototype.updateChild=function(t,e,n,r,i,o){return this.rangedFilter_.matches(new ae(e,n))||(n=Ye.EMPTY_NODE),t.getImmediateChild(e).equals(n)?t:t.numChildren()<this.limit_?this.rangedFilter_.getIndexedFilter().updateChild(t,e,n,r,i,o):this.fullLimitUpdateChild_(t,e,n,i,o)},fi.prototype.updateFullNode=function(t,e,n){var r;if(e.isLeafNode()||e.isEmpty())r=Ye.EMPTY_NODE.withIndex(this.index_);else if(2*this.limit_<e.numChildren()&&e.isIndexed(this.index_)){r=Ye.EMPTY_NODE.withIndex(this.index_);var i=void 0;i=this.reverse_?e.getReverseIteratorFrom(this.rangedFilter_.getEndPost(),this.index_):e.getIteratorFrom(this.rangedFilter_.getStartPost(),this.index_);for(var o=0;i.hasNext()&&o<this.limit_;){var s=i.getNext();if(!(this.reverse_?this.index_.compare(this.rangedFilter_.getStartPost(),s)<=0:this.index_.compare(s,this.rangedFilter_.getEndPost())<=0))break;r=r.updateImmediateChild(s.name,s.node),o++}}else{r=(r=e.withIndex(this.index_)).updatePriority(Ye.EMPTY_NODE);var a=void 0,h=void 0,l=void 0;if(i=void 0,this.reverse_){i=r.getReverseIterator(this.index_),a=this.rangedFilter_.getEndPost(),h=this.rangedFilter_.getStartPost();var u=this.index_.getCompare();l=function(t,e){return u(e,t)}}else i=r.getIterator(this.index_),a=this.rangedFilter_.getStartPost(),h=this.rangedFilter_.getEndPost(),l=this.index_.getCompare();o=0;for(var c=!1;i.hasNext();)s=i.getNext(),!c&&l(a,s)<=0&&(c=!0),c&&o<this.limit_&&l(s,h)<=0?o++:r=r.updateImmediateChild(s.name,Ye.EMPTY_NODE)}return this.rangedFilter_.getIndexedFilter().updateFullNode(t,r,n)},fi.prototype.updatePriority=function(t,e){return t},fi.prototype.filtersNodes=function(){return!0},fi.prototype.getIndexedFilter=function(){return this.rangedFilter_.getIndexedFilter()},fi.prototype.getIndex=function(){return this.index_},fi.prototype.fullLimitUpdateChild_=function(t,e,n,r,i){var o;if(this.reverse_){var s=this.index_.getCompare();o=function(t,e){return s(e,t)}}else o=this.index_.getCompare();var a=t;C(a.numChildren()===this.limit_,"");var h=new ae(e,n),l=this.reverse_?a.getFirstChild(this.index_):a.getLastChild(this.index_),u=this.rangedFilter_.matches(h);if(a.hasChild(e)){for(var c=a.getImmediateChild(e),p=r.getChildAfterChild(this.index_,l,this.reverse_);null!=p&&(p.name===e||a.hasChild(p.name));)p=r.getChildAfterChild(this.index_,p,this.reverse_);var d=null==p?1:o(p,h);if(u&&!n.isEmpty()&&0<=d)return null!=i&&i.trackChildChange(Vn.childChangedChange(e,n,c)),a.updateImmediateChild(e,n);null!=i&&i.trackChildChange(Vn.childRemovedChange(e,c));var f=a.updateImmediateChild(e,Ye.EMPTY_NODE);return null!=p&&this.rangedFilter_.matches(p)?(null!=i&&i.trackChildChange(Vn.childAddedChange(p.name,p.node)),f.updateImmediateChild(p.name,p.node)):f}return n.isEmpty()?t:u&&0<=o(l,h)?(null!=i&&(i.trackChildChange(Vn.childRemovedChange(l.name,l.node)),i.trackChildChange(Vn.childAddedChange(e,n))),a.updateImmediateChild(e,n).updateImmediateChild(l.name,Ye.EMPTY_NODE)):t},fi);function fi(t){this.rangedFilter_=new ci(t),this.index_=t.getIndex(),this.limit_=t.getLimit(),this.reverse_=!t.isViewFromLeft()}var _i=(yi.prototype.hasStart=function(){return this.startSet_},yi.prototype.isViewFromLeft=function(){return""===this.viewFrom_?this.startSet_:this.viewFrom_===yi.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_LEFT},yi.prototype.getIndexStartValue=function(){return C(this.startSet_,"Only valid if start has been set"),this.indexStartValue_},yi.prototype.getIndexStartName=function(){return C(this.startSet_,"Only valid if start has been set"),this.startNameSet_?this.indexStartName_:vt},yi.prototype.hasEnd=function(){return this.endSet_},yi.prototype.getIndexEndValue=function(){return C(this.endSet_,"Only valid if end has been set"),this.indexEndValue_},yi.prototype.getIndexEndName=function(){return C(this.endSet_,"Only valid if end has been set"),this.endNameSet_?this.indexEndName_:gt},yi.prototype.hasLimit=function(){return this.limitSet_},yi.prototype.hasAnchoredLimit=function(){return this.limitSet_&&""!==this.viewFrom_},yi.prototype.getLimit=function(){return C(this.limitSet_,"Only valid if limit has been set"),this.limit_},yi.prototype.getIndex=function(){return this.index_},yi.prototype.copy_=function(){var t=new yi;return t.limitSet_=this.limitSet_,t.limit_=this.limit_,t.startSet_=this.startSet_,t.indexStartValue_=this.indexStartValue_,t.startNameSet_=this.startNameSet_,t.indexStartName_=this.indexStartName_,t.endSet_=this.endSet_,t.indexEndValue_=this.indexEndValue_,t.endNameSet_=this.endNameSet_,t.indexEndName_=this.indexEndName_,t.index_=this.index_,t.viewFrom_=this.viewFrom_,t},yi.prototype.limit=function(t){var e=this.copy_();return e.limitSet_=!0,e.limit_=t,e.viewFrom_="",e},yi.prototype.limitToFirst=function(t){var e=this.copy_();return e.limitSet_=!0,e.limit_=t,e.viewFrom_=yi.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_LEFT,e},yi.prototype.limitToLast=function(t){var e=this.copy_();return e.limitSet_=!0,e.limit_=t,e.viewFrom_=yi.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_RIGHT,e},yi.prototype.startAt=function(t,e){var n=this.copy_();return n.startSet_=!0,void 0===t&&(t=null),n.indexStartValue_=t,null!=e?(n.startNameSet_=!0,n.indexStartName_=e):(n.startNameSet_=!1,n.indexStartName_=""),n},yi.prototype.endAt=function(t,e){var n=this.copy_();return n.endSet_=!0,void 0===t&&(t=null),n.indexEndValue_=t,void 0!==e?(n.endNameSet_=!0,n.indexEndName_=e):(n.endNameSet_=!1,n.indexEndName_=""),n},yi.prototype.orderBy=function(t){var e=this.copy_();return e.index_=t,e},yi.prototype.getQueryObject=function(){var t=yi.WIRE_PROTOCOL_CONSTANTS_,e={};if(this.startSet_&&(e[t.INDEX_START_VALUE]=this.indexStartValue_,this.startNameSet_&&(e[t.INDEX_START_NAME]=this.indexStartName_)),this.endSet_&&(e[t.INDEX_END_VALUE]=this.indexEndValue_,this.endNameSet_&&(e[t.INDEX_END_NAME]=this.indexEndName_)),this.limitSet_){e[t.LIMIT]=this.limit_;var n=this.viewFrom_;""===n&&(n=this.isViewFromLeft()?t.VIEW_FROM_LEFT:t.VIEW_FROM_RIGHT),e[t.VIEW_FROM]=n}return this.index_!==Ie&&(e[t.INDEX]=this.index_.toString()),e},yi.prototype.loadsAllData=function(){return!(this.startSet_||this.endSet_||this.limitSet_)},yi.prototype.isDefault=function(){return this.loadsAllData()&&this.index_===Ie},yi.prototype.getNodeFilter=function(){return this.loadsAllData()?new Bn(this.getIndex()):this.hasLimit()?new di(this):new ci(this)},yi.prototype.toRestQueryStringParameters=function(){var t,e=yi.REST_QUERY_CONSTANTS_,n={};return this.isDefault()||(t=this.index_===Ie?e.PRIORITY_INDEX:this.index_===nn?e.VALUE_INDEX:this.index_===ye?e.KEY_INDEX:(C(this.index_ instanceof rn,"Unrecognized index type!"),this.index_.toString()),n[e.ORDER_BY]=T(t),this.startSet_&&(n[e.START_AT]=T(this.indexStartValue_),this.startNameSet_&&(n[e.START_AT]+=","+T(this.indexStartName_))),this.endSet_&&(n[e.END_AT]=T(this.indexEndValue_),this.endNameSet_&&(n[e.END_AT]+=","+T(this.indexEndName_))),this.limitSet_&&(this.isViewFromLeft()?n[e.LIMIT_TO_FIRST]=this.limit_:n[e.LIMIT_TO_LAST]=this.limit_)),n},yi.WIRE_PROTOCOL_CONSTANTS_={INDEX_START_VALUE:"sp",INDEX_START_NAME:"sn",INDEX_END_VALUE:"ep",INDEX_END_NAME:"en",LIMIT:"l",VIEW_FROM:"vf",VIEW_FROM_LEFT:"l",VIEW_FROM_RIGHT:"r",INDEX:"i"},yi.REST_QUERY_CONSTANTS_={ORDER_BY:"orderBy",PRIORITY_INDEX:"$priority",VALUE_INDEX:"$value",KEY_INDEX:"$key",START_AT:"startAt",END_AT:"endAt",LIMIT_TO_FIRST:"limitToFirst",LIMIT_TO_LAST:"limitToLast"},yi.DEFAULT=new yi,yi);function yi(){this.limitSet_=!1,this.startSet_=!1,this.startNameSet_=!1,this.endSet_=!1,this.endNameSet_=!1,this.limit_=0,this.viewFrom_="",this.indexStartValue_=null,this.indexStartName_="",this.indexEndValue_=null,this.indexEndName_="",this.index_=Ie}var vi,gi=(t(mi,vi=vn),mi.prototype.getKey=function(){return k("Reference.key",0,0,arguments.length),this.path.isEmpty()?null:this.path.getBack()},mi.prototype.child=function(t){return k("Reference.child",1,1,arguments.length),"number"==typeof t?t=String(t):t instanceof Nt||(null===this.path.getFront()?function(t,e,n,r){n=n&&n.replace(/^\/*\.info(\/|$)/,"/"),jt(t,e,n,r)}("Reference.child",1,t,!1):jt("Reference.child",1,t,!1)),new mi(this.repo,this.path.child(t))},mi.prototype.getParent=function(){k("Reference.parent",0,0,arguments.length);var t=this.path.parent();return null===t?null:new mi(this.repo,t)},mi.prototype.getRoot=function(){k("Reference.root",0,0,arguments.length);for(var t=this;null!==t.getParent();)t=t.getParent();return t},mi.prototype.databaseProp=function(){return this.repo.database},mi.prototype.set=function(t,e){k("Reference.set",1,2,arguments.length),Kt("Reference.set",this.path),qt("Reference.set",1,t,this.path,!1),A("Reference.set",2,e,!0);var n=new p;return this.repo.setWithPriority(this.path,t,null,n.wrapCallback(e)),n.promise},mi.prototype.update=function(t,e){if(k("Reference.update",1,2,arguments.length),Kt("Reference.update",this.path),Array.isArray(t)){for(var n={},r=0;r<t.length;++r)n[""+r]=t[r];t=n,it("Passing an Array to Firebase.update() is deprecated. Use set() if you want to overwrite the existing data, or an Object with integer keys if you really do want to only update some of the children.")}Ut("Reference.update",1,t,this.path,!1),A("Reference.update",2,e,!0);var i=new p;return this.repo.update(this.path,t,i.wrapCallback(e)),i.promise},mi.prototype.setWithPriority=function(t,e,n){if(k("Reference.setWithPriority",2,3,arguments.length),Kt("Reference.setWithPriority",this.path),qt("Reference.setWithPriority",1,t,this.path,!1),Vt("Reference.setWithPriority",2,e,!1),A("Reference.setWithPriority",3,n,!0),".length"===this.getKey()||".keys"===this.getKey())throw"Reference.setWithPriority failed: "+this.getKey()+" is a read-only object.";var r=new p;return this.repo.setWithPriority(this.path,t,e,r.wrapCallback(n)),r.promise},mi.prototype.remove=function(t){return k("Reference.remove",0,1,arguments.length),Kt("Reference.remove",this.path),A("Reference.remove",1,t,!0),this.set(null,t)},mi.prototype.transaction=function(t,r,e){if(k("Reference.transaction",1,3,arguments.length),Kt("Reference.transaction",this.path),A("Reference.transaction",1,t,!1),A("Reference.transaction",2,r,!0),function(t,e,n,r){if((!r||void 0!==n)&&"boolean"!=typeof n)throw new Error(F(t,e,r)+"must be a boolean.")}("Reference.transaction",3,e,!0),".length"===this.getKey()||".keys"===this.getKey())throw"Reference.transaction failed: "+this.getKey()+" is a read-only object.";void 0===e&&(e=!0);var i=new p;return"function"==typeof r&&i.promise.catch(function(){}),this.repo.startTransaction(this.path,t,function(t,e,n){t?i.reject(t):i.resolve(new ee(e,n)),"function"==typeof r&&r(t,e,n)},e),i.promise},mi.prototype.setPriority=function(t,e){k("Reference.setPriority",1,2,arguments.length),Kt("Reference.setPriority",this.path),Vt("Reference.setPriority",1,t,!1),A("Reference.setPriority",2,e,!0);var n=new p;return this.repo.setWithPriority(this.path.child(".priority"),t,null,n.wrapCallback(e)),n.promise},mi.prototype.push=function(t,e){k("Reference.push",0,2,arguments.length),Kt("Reference.push",this.path),qt("Reference.push",1,t,this.path,!0),A("Reference.push",2,e,!0);var n,r=this.repo.serverTime(),i=se(r),o=this.child(i),s=this.child(i);return n=null!=t?o.set(t,e).then(function(){return s}):Promise.resolve(s),o.then=n.then.bind(n),o.catch=n.then.bind(n,void 0),"function"==typeof e&&n.catch(function(){}),o},mi.prototype.onDisconnect=function(){return Kt("Reference.onDisconnect",this.path),new Zt(this.repo,this.path)},Object.defineProperty(mi.prototype,"database",{get:function(){return this.databaseProp()},enumerable:!0,configurable:!0}),Object.defineProperty(mi.prototype,"key",{get:function(){return this.getKey()},enumerable:!0,configurable:!0}),Object.defineProperty(mi.prototype,"parent",{get:function(){return this.getParent()},enumerable:!0,configurable:!0}),Object.defineProperty(mi.prototype,"root",{get:function(){return this.getRoot()},enumerable:!0,configurable:!0}),mi);function mi(t,e){if(!(t instanceof li))throw new Error("new Reference() no longer supported - use app.database().");return vi.call(this,t,e,_i.DEFAULT,!1)||this}vn.__referenceConstructor=gi,sr.__referenceConstructor=gi;var Ci,Ei,wi=function(){this.children={},this.childCount=0,this.value=null},bi=(Si.prototype.subTree=function(t){for(var e=t instanceof Nt?t:new Nt(t),n=this,r=e.getFront();null!==r;)n=new Si(r,n,R(n.node_.children,r)||new wi),r=(e=e.popFront()).getFront();return n},Si.prototype.getValue=function(){return this.node_.value},Si.prototype.setValue=function(t){C(void 0!==t,"Cannot set value to undefined"),this.node_.value=t,this.updateParents_()},Si.prototype.clear=function(){this.node_.value=null,this.node_.children={},this.node_.childCount=0,this.updateParents_()},Si.prototype.hasChildren=function(){return 0<this.node_.childCount},Si.prototype.isEmpty=function(){return null===this.getValue()&&!this.hasChildren()},Si.prototype.forEachChild=function(n){var r=this;Et(this.node_.children,function(t,e){n(new Si(t,r,e))})},Si.prototype.forEachDescendant=function(e,t,n){t&&!n&&e(this),this.forEachChild(function(t){t.forEachDescendant(e,!0,n)}),t&&n&&e(this)},Si.prototype.forEachAncestor=function(t,e){for(var n=e?this:this.parent();null!==n;){if(t(n))return!0;n=n.parent()}return!1},Si.prototype.forEachImmediateDescendantWithValue=function(e){this.forEachChild(function(t){null!==t.getValue()?e(t):t.forEachImmediateDescendantWithValue(e)})},Si.prototype.path=function(){return new Nt(null===this.parent_?this.name_:this.parent_.path()+"/"+this.name_)},Si.prototype.name=function(){return this.name_},Si.prototype.parent=function(){return this.parent_},Si.prototype.updateParents_=function(){null!==this.parent_&&this.parent_.updateChild_(this.name_,this)},Si.prototype.updateChild_=function(t,e){var n=e.isEmpty(),r=N(this.node_.children,t);n&&r?(delete this.node_.children[t],this.node_.childCount--,this.updateParents_()):n||r||(this.node_.children[t]=e.node_,this.node_.childCount++,this.updateParents_())},Si);function Si(t,e,n){void 0===t&&(t=""),void 0===e&&(e=null),void 0===n&&(n=new wi),this.name_=t,this.parent_=e,this.node_=n}(Ei=Ci=Ci||{})[Ei.RUN=0]="RUN",Ei[Ei.SENT=1]="SENT",Ei[Ei.COMPLETED=2]="COMPLETED",Ei[Ei.SENT_NEEDS_ABORT=3]="SENT_NEEDS_ABORT",Ei[Ei.NEEDS_ABORT=4]="NEEDS_ABORT",li.MAX_TRANSACTION_RETRIES_=25,li.prototype.transactionsInit_=function(){this.transactionQueueTree_=new bi},li.prototype.startTransaction=function(t,e,n,r){this.log_("transaction on "+t);function i(){}var o=new gi(this,t);o.on("value",i);var s={path:t,update:e,onComplete:n,status:null,order:dt(),applyLocally:r,retryCount:0,unwatcher:function(){o.off("value",i)},abortReason:null,currentWriteId:null,currentInputSnapshot:null,currentOutputSnapshotRaw:null,currentOutputSnapshotResolved:null},a=this.getLatestState_(t);s.currentInputSnapshot=a;var h=s.update(a.val());if(void 0===h){if(s.unwatcher(),s.currentOutputSnapshotRaw=null,s.currentOutputSnapshotResolved=null,s.onComplete){var l=new sn(s.currentInputSnapshot,new gi(this,s.path),Ie);s.onComplete(null,!1,l)}}else{Jt("transaction failed: Data returned ",h,s.path),s.status=Ci.RUN;var u=this.transactionQueueTree_.subTree(t),c=u.getValue()||[];c.push(s),u.setValue(c);var p=void 0;if("object"==typeof h&&null!==h&&N(h,".priority"))p=R(h,".priority"),C(Qt(p),"Invalid priority returned by transaction. Priority must be a valid string, finite number, server value, or null.");else p=(this.serverSyncTree_.calcCompleteEventCache(t)||Ye.EMPTY_NODE).getPriority().val();p=p;var d=this.generateServerValues(),f=Ze(h,p),_=Sn(f,d);s.currentOutputSnapshotRaw=f,s.currentOutputSnapshotResolved=_,s.currentWriteId=this.getNextWriteId_();var y=this.serverSyncTree_.applyUserOverwrite(t,_,s.currentWriteId,s.applyLocally);this.eventQueue_.raiseEventsForChangedPath(t,y),this.sendReadyTransactions_()}},li.prototype.getLatestState_=function(t,e){return this.serverSyncTree_.calcCompleteEventCache(t,e)||Ye.EMPTY_NODE},li.prototype.sendReadyTransactions_=function(t){var e=this;if(void 0===t&&(t=this.transactionQueueTree_),t||this.pruneCompletedTransactionsBelowNode_(t),null!==t.getValue()){var n=this.buildTransactionQueue_(t);C(0<n.length,"Sending zero length transaction queue"),n.every(function(t){return t.status===Ci.RUN})&&this.sendTransactionQueue_(t.path(),n)}else t.hasChildren()&&t.forEachChild(function(t){e.sendReadyTransactions_(t)})},li.prototype.sendTransactionQueue_=function(a,h){for(var l=this,t=h.map(function(t){return t.currentWriteId}),e=this.getLatestState_(a,t),n=e,r=e.hash(),i=0;i<h.length;i++){var o=h[i];C(o.status===Ci.RUN,"tryToSendTransactionQueue_: items in queue should all be run."),o.status=Ci.SENT,o.retryCount++;var s=Nt.relativePath(a,o.path);n=n.updateChild(s,o.currentOutputSnapshotRaw)}var u=n.val(!0),c=a;this.server_.put(c.toString(),u,function(t){l.log_("transaction put response",{path:c.toString(),status:t});var e=[];if("ok"===t){for(var n=[],r=0;r<h.length;r++){if(h[r].status=Ci.COMPLETED,e=e.concat(l.serverSyncTree_.ackUserWrite(h[r].currentWriteId)),h[r].onComplete){var i=h[r].currentOutputSnapshotResolved,o=new gi(l,h[r].path),s=new sn(i,o,Ie);n.push(h[r].onComplete.bind(null,null,!0,s))}h[r].unwatcher()}l.pruneCompletedTransactionsBelowNode_(l.transactionQueueTree_.subTree(a)),l.sendReadyTransactions_(),l.eventQueue_.raiseEventsForChangedPath(a,e);for(r=0;r<n.length;r++)bt(n[r])}else{if("datastale"===t)for(r=0;r<h.length;r++)h[r].status===Ci.SENT_NEEDS_ABORT?h[r].status=Ci.NEEDS_ABORT:h[r].status=Ci.RUN;else{it("transaction at "+c.toString()+" failed: "+t);for(r=0;r<h.length;r++)h[r].status=Ci.NEEDS_ABORT,h[r].abortReason=t}l.rerunTransactions_(a)}},r)},li.prototype.rerunTransactions_=function(t){var e=this.getAncestorTransactionNode_(t),n=e.path(),r=this.buildTransactionQueue_(e);return this.rerunTransactionQueue_(r,n),n},li.prototype.rerunTransactionQueue_=function(t,e){if(0!==t.length){for(var n,r=[],i=[],o=t.filter(function(t){return t.status===Ci.RUN}).map(function(t){return t.currentWriteId}),s=0;s<t.length;s++){var a=t[s],h=Nt.relativePath(e,a.path),l=!1,u=void 0;if(C(null!==h,"rerunTransactionsUnderNode_: relativePath should not be null."),a.status===Ci.NEEDS_ABORT)l=!0,u=a.abortReason,i=i.concat(this.serverSyncTree_.ackUserWrite(a.currentWriteId,!0));else if(a.status===Ci.RUN)if(a.retryCount>=li.MAX_TRANSACTION_RETRIES_)l=!0,u="maxretry",i=i.concat(this.serverSyncTree_.ackUserWrite(a.currentWriteId,!0));else{var c=this.getLatestState_(a.path,o);a.currentInputSnapshot=c;var p=t[s].update(c.val());if(void 0!==p){Jt("transaction failed: Data returned ",p,a.path);var d=Ze(p);"object"==typeof p&&null!=p&&N(p,".priority")||(d=d.updatePriority(c.getPriority()));var f=a.currentWriteId,_=this.generateServerValues(),y=Sn(d,_);a.currentOutputSnapshotRaw=d,a.currentOutputSnapshotResolved=y,a.currentWriteId=this.getNextWriteId_(),o.splice(o.indexOf(f),1),i=(i=i.concat(this.serverSyncTree_.applyUserOverwrite(a.path,y,a.currentWriteId,a.applyLocally))).concat(this.serverSyncTree_.ackUserWrite(f,!0))}else l=!0,u="nodata",i=i.concat(this.serverSyncTree_.ackUserWrite(a.currentWriteId,!0))}if(this.eventQueue_.raiseEventsForChangedPath(e,i),i=[],l&&(t[s].status=Ci.COMPLETED,n=t[s].unwatcher,setTimeout(n,Math.floor(0)),t[s].onComplete))if("nodata"===u){var v=new gi(this,t[s].path),g=t[s].currentInputSnapshot,m=new sn(g,v,Ie);r.push(t[s].onComplete.bind(null,null,!1,m))}else r.push(t[s].onComplete.bind(null,new Error(u),!1,null))}this.pruneCompletedTransactionsBelowNode_(this.transactionQueueTree_);for(s=0;s<r.length;s++)bt(r[s]);this.sendReadyTransactions_()}},li.prototype.getAncestorTransactionNode_=function(t){var e,n=this.transactionQueueTree_;for(e=t.getFront();null!==e&&null===n.getValue();)n=n.subTree(e),e=(t=t.popFront()).getFront();return n},li.prototype.buildTransactionQueue_=function(t){var e=[];return this.aggregateTransactionQueuesForNode_(t,e),e.sort(function(t,e){return t.order-e.order}),e},li.prototype.aggregateTransactionQueuesForNode_=function(t,e){var n=this,r=t.getValue();if(null!==r)for(var i=0;i<r.length;i++)e.push(r[i]);t.forEachChild(function(t){n.aggregateTransactionQueuesForNode_(t,e)})},li.prototype.pruneCompletedTransactionsBelowNode_=function(t){var e=this,n=t.getValue();if(n){for(var r=0,i=0;i<n.length;i++)n[i].status!==Ci.COMPLETED&&(n[r]=n[i],r++);n.length=r,t.setValue(0<n.length?n:null)}t.forEachChild(function(t){e.pruneCompletedTransactionsBelowNode_(t)})},li.prototype.abortTransactions_=function(t){var e=this,n=this.getAncestorTransactionNode_(t).path(),r=this.transactionQueueTree_.subTree(t);return r.forEachAncestor(function(t){e.abortTransactionsOnNode_(t)}),this.abortTransactionsOnNode_(r),r.forEachDescendant(function(t){e.abortTransactionsOnNode_(t)}),n},li.prototype.abortTransactionsOnNode_=function(t){var e=t.getValue();if(null!==e){for(var n=[],r=[],i=-1,o=0;o<e.length;o++)if(e[o].status===Ci.SENT_NEEDS_ABORT);else if(e[o].status===Ci.SENT)C(i===o-1,"All SENT items should be at beginning of queue."),e[i=o].status=Ci.SENT_NEEDS_ABORT,e[o].abortReason="set";else if(C(e[o].status===Ci.RUN,"Unexpected transaction status in abort"),e[o].unwatcher(),r=r.concat(this.serverSyncTree_.ackUserWrite(e[o].currentWriteId,!0)),e[o].onComplete){n.push(e[o].onComplete.bind(null,new Error("set"),!1,null))}-1===i?t.setValue(null):e.length=i+1,this.eventQueue_.raiseEventsForChangedPath(t.path(),r);for(o=0;o<n.length;o++)bt(n[o])}};var Ti,Ii="databaseURL",Ni=(Ri.getInstance=function(){return Ti=Ti||new Ri},Ri.prototype.interrupt=function(){var e,t,n,r;try{for(var i=f(Object.keys(this.repos_)),o=i.next();!o.done;o=i.next()){var s=o.value;try{for(var a=(n=void 0,f(Object.keys(this.repos_[s]))),h=a.next();!h.done;h=a.next()){var l=h.value;this.repos_[s][l].interrupt()}}catch(t){n={error:t}}finally{try{h&&!h.done&&(r=a.return)&&r.call(a)}finally{if(n)throw n.error}}}}catch(t){e={error:t}}finally{try{o&&!o.done&&(t=i.return)&&t.call(i)}finally{if(e)throw e.error}}},Ri.prototype.resume=function(){var e,t,n,r;try{for(var i=f(Object.keys(this.repos_)),o=i.next();!o.done;o=i.next()){var s=o.value;try{for(var a=(n=void 0,f(Object.keys(this.repos_[s]))),h=a.next();!h.done;h=a.next()){var l=h.value;this.repos_[s][l].resume()}}catch(t){n={error:t}}finally{try{h&&!h.done&&(r=a.return)&&r.call(a)}finally{if(n)throw n.error}}}}catch(t){e={error:t}}finally{try{o&&!o.done&&(t=i.return)&&t.call(i)}finally{if(e)throw e.error}}},Ri.prototype.databaseFromApp=function(t,e,n){var r=n||t.options[Ii];void 0===r&&rt("Can't determine Firebase Database URL.  Be sure to include "+Ii+" option when calling firebase.initializeApp().");var i=Lt(r),o=i.repoInfo,s=void 0;return"undefined"!=typeof process&&(s=process.env.FIREBASE_DATABASE_EMULATOR_HOST),s&&(r="http://"+s+"?ns="+o.namespace,o=(i=Lt(r)).repoInfo),Yt("Invalid Firebase Database URL",1,i),i.path.isEmpty()||rt("Database URL must point to the root of a Firebase Database (not including a child path)."),this.createRepo(o,t,e).database},Ri.prototype.deleteRepo=function(t){var e=R(this.repos_,t.app.name);e&&R(e,t.repoInfo_.toURLString())===t||rt("Database "+t.app.name+"("+t.repoInfo_+") has already been deleted."),t.interrupt(),delete e[t.repoInfo_.toURLString()]},Ri.prototype.createRepo=function(t,e,n){var r=R(this.repos_,e.name);r||(r={},this.repos_[e.name]=r);var i=R(r,t.toURLString());return i&&rt("Database initialized multiple times. Please make sure the format of the database URL matches with each database() call."),i=new li(t,this.useRestClient_,e,n),r[t.toURLString()]=i},Ri.prototype.forceRestClient=function(t){this.useRestClient_=t},Ri);function Ri(){this.repos_={},this.useRestClient_=!1}var Pi=(Object.defineProperty(Di.prototype,"app",{get:function(){return this.repo_.app},enumerable:!0,configurable:!0}),Di.prototype.ref=function(t){return this.checkDeleted_("ref"),k("database.ref",0,1,arguments.length),t instanceof gi?this.refFromURL(t.toString()):void 0!==t?this.root_.child(t):this.root_},Di.prototype.refFromURL=function(t){var e="database.refFromURL";this.checkDeleted_(e),k(e,1,1,arguments.length);var n=Lt(t);Yt(e,1,n);var r=n.repoInfo;return r.host!==this.repo_.repoInfo_.host&&rt(e+": Host name does not match the current database: (found "+r.host+" but expected "+this.repo_.repoInfo_.host+")"),this.ref(n.path.toString())},Di.prototype.checkDeleted_=function(t){null===this.repo_&&rt("Cannot call "+t+" on a deleted database.")},Di.prototype.goOffline=function(){k("database.goOffline",0,0,arguments.length),this.checkDeleted_("goOffline"),this.repo_.interrupt()},Di.prototype.goOnline=function(){k("database.goOnline",0,0,arguments.length),this.checkDeleted_("goOnline"),this.repo_.resume()},Di.ServerValue={TIMESTAMP:{".sv":"timestamp"}},Di);function Di(t){(this.repo_=t)instanceof li||rt("Don't call new Database() directly - please use firebase.database()."),this.root_=new gi(t,Nt.Empty),this.INTERNAL=new Oi(this)}var Oi=(xi.prototype.delete=function(){return function(o,s,a,h){return new(a=a||Promise)(function(t,e){function n(t){try{i(h.next(t))}catch(t){e(t)}}function r(t){try{i(h.throw(t))}catch(t){e(t)}}function i(e){e.done?t(e.value):new a(function(t){t(e.value)}).then(n,r)}i((h=h.apply(o,s||[])).next())})}(this,void 0,void 0,function(){return e(this,function(t){return this.database.checkDeleted_("delete"),Ni.getInstance().deleteRepo(this.database.repo_),this.database.repo_=null,this.database.root_=null,this.database.INTERNAL=null,this.database=null,[2]})})},xi);function xi(t){this.database=t}var ki=Object.freeze({__proto__:null,forceLongPolling:function(){zr.forceDisallow(),Vr.forceAllow()},forceWebSockets:function(){Vr.forceDisallow()},isWebSocketsAvailable:function(){return zr.isAvailable()},setSecurityDebugCallback:function(t,e){t.repo.persistentConnection_.securityDebugCallback_=e},stats:function(t,e){t.repo.stats(e)},statsIncrementCounter:function(t,e){t.repo.statsIncrementCounter(e)},dataUpdateCount:function(t){return t.repo.dataUpdateCount},interceptServerData:function(t,e){return t.repo.interceptServerData_(e)}}),Fi=ri;ri.prototype.simpleListen=function(t,e){this.sendRequest("q",{p:t},e)},ri.prototype.echo=function(t,e){this.sendRequest("echo",{d:t},e)};var Ai,Li,Mi=Jr,Wi=Ft,Qi=Object.freeze({__proto__:null,DataConnection:Fi,RealTimeConnection:Mi,hijackHash:function(i){var o=ri.prototype.put;return ri.prototype.put=function(t,e,n,r){void 0!==r&&(r=i()),o.call(this,t,e,n,r)},function(){ri.prototype.put=o}},ConnectionTarget:Wi,queryIdentifier:function(t){return t.queryIdentifier()},forceRestClient:function(t){Ni.getInstance().forceRestClient(t)}}),qi=Pi.ServerValue;Ai=(Li=Ui).SDK_VERSION,Kr=Ai,Li.INTERNAL.registerComponent(new j("database",function(t,e){var n=t.getProvider("app").getImmediate(),r=t.getProvider("auth-internal");return Ni.getInstance().databaseFromApp(n,r,e)},"PUBLIC").setServiceProps({Reference:gi,Query:vn,Database:Pi,DataSnapshot:sn,enableLogging:Z,INTERNAL:ki,ServerValue:qi,TEST_ACCESS:Qi}).setMultipleInstances(!0)),Li.registerVersion("@firebase/database","0.5.20")}).apply(this,arguments)}catch(t){throw console.error(t),new Error("Cannot instantiate firebase-database.js - be sure to load firebase-app.js first.")}});
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