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/**
 * @license
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
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a.assert(20===u.length,"nextPushId: Length should be 20."),u}}(),Ot=function(){function t(t,e){this.name=t,this.node=e}return t.Wrap=function(e,n){return new t(e,n)},t}(),At=function(){function t(){}return t.prototype.getCompare=function(){return this.compare.bind(this)},t.prototype.indexedValueChanged=function(t,e){var n=new Ot(D,t),r=new Ot(D,e);return 0!==this.compare(n,r)},t.prototype.minPost=function(){return Ot.MIN},t}(),Ft=function(t){function e(){return null!==t&&t.apply(this,arguments)||this}return s.__extends(e,t),Object.defineProperty(e,"__EMPTY_NODE",{get:function(){return at},set:function(t){at=t},enumerable:!0,configurable:!0}),e.prototype.compare=function(t,e){return k(t.name,e.name)},e.prototype.isDefinedOn=function(t){throw a.assertionError("KeyIndex.isDefinedOn not expected to be called.")},e.prototype.indexedValueChanged=function(t,e){return!1},e.prototype.minPost=function(){return Ot.MIN},e.prototype.maxPost=function(){return new 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Object.defineProperty(t,"__childrenNodeConstructor",{get:function(){return Wt},set:function(t){Wt=t},enumerable:!0,configurable:!0}),t.prototype.isLeafNode=function(){return!0},t.prototype.getPriority=function(){return this.priorityNode_},t.prototype.updatePriority=function(e){return new t(this.value_,e)},t.prototype.getImmediateChild=function(e){return".priority"===e?this.priorityNode_:t.__childrenNodeConstructor.EMPTY_NODE},t.prototype.getChild=function(e){return e.isEmpty()?this:".priority"===e.getFront()?this.priorityNode_:t.__childrenNodeConstructor.EMPTY_NODE},t.prototype.hasChild=function(){return!1},t.prototype.getPredecessorChildName=function(t,e){return null},t.prototype.updateImmediateChild=function(e,n){return".priority"===e?this.updatePriority(n):n.isEmpty()&&".priority"!==e?this:t.__childrenNodeConstructor.EMPTY_NODE.updateImmediateChild(e,n).updatePriority(this.priorityNode_)},t.prototype.updateChild=function(e,n){var r=e.getFront();return null===r?n:n.isEmpty()&&".priority"!==r?this:(a.assert(".priority"!==r||1===e.getLength(),".priority must be the last token in a path"),this.updateImmediateChild(r,t.__childrenNodeConstructor.EMPTY_NODE.updateChild(e.popFront(),n)))},t.prototype.isEmpty=function(){return!1},t.prototype.numChildren=function(){return 0},t.prototype.forEachChild=function(t,e){return!1},t.prototype.val=function(t){return t&&!this.getPriority().isEmpty()?{".value":this.getValue(),".priority":this.getPriority().val()}:this.getValue()},t.prototype.hash=function(){if(null===this.lazyHash_){var t="";this.priorityNode_.isEmpty()||(t+="priority:"+Ut(this.priorityNode_.val())+":");var e=typeof this.value_;t+=e+":",t+="number"===e?W(this.value_):this.value_,this.lazyHash_=v(t)}return this.lazyHash_},t.prototype.getValue=function(){return this.value_},t.prototype.compareTo=function(e){return e===t.__childrenNodeConstructor.EMPTY_NODE?1:e instanceof t.__childrenNodeConstructor?-1:(a.assert(e.isLeafNode(),"Unknown node type"),this.compareToLeafNode_(e))},t.prototype.compareToLeafNode_=function(e){var n=typeof e.value_,r=typeof this.value_,i=t.VALUE_TYPE_ORDER.indexOf(n),o=t.VALUE_TYPE_ORDER.indexOf(r);return a.assert(i>=0,"Unknown leaf type: "+n),a.assert(o>=0,"Unknown leaf type: "+r),i===o?"object"===r?0:this.value_<e.value_?-1:this.value_===e.value_?0:1:o-i},t.prototype.withIndex=function(){return this},t.prototype.isIndexed=function(){return!0},t.prototype.equals=function(t){if(t===this)return!0;if(t.isLeafNode()){var e=t;return this.value_===e.value_&&this.priorityNode_.equals(e.priorityNode_)}return!1},t.VALUE_TYPE_ORDER=["object","boolean","number","string"],t}();function jt(t){Qt=t}function Bt(t){qt=t}var Yt,Kt,zt=function(t){function e(){return null!==t&&t.apply(this,arguments)||this}return s.__extends(e,t),e.prototype.compare=function(t,e){var n=t.node.getPriority(),r=e.node.getPriority(),i=n.compareTo(r);return 0===i?k(t.name,e.name):i},e.prototype.isDefinedOn=function(t){return!t.getPriority().isEmpty()},e.prototype.indexedValueChanged=function(t,e){return!t.getPriority().equals(e.getPriority())},e.prototype.minPost=function(){return Ot.MIN},e.prototype.maxPost=function(){return new Ot(x,new Ht("[PRIORITY-POST]",qt))},e.prototype.makePost=function(t,e){var n=Qt(t);return new Ot(e,new Ht("[PRIORITY-POST]",n))},e.prototype.toString=function(){return".priority"},e}(At),Gt=new zt,Xt=function(){function t(t,e,n,r,i){void 0===i&&(i=null),this.isReverse_=r,this.resultGenerator_=i,this.nodeStack_=[];var o=1;while(!t.isEmpty())if(t=t,o=e?n(t.key,e):1,r&&(o*=-1),o<0)t=this.isReverse_?t.left:t.right;else{if(0===o){this.nodeStack_.push(t);break}this.nodeStack_.push(t),t=this.isReverse_?t.right:t.left}}return t.prototype.getNext=function(){if(0===this.nodeStack_.length)return null;var t,e=this.nodeStack_.pop();if(t=this.resultGenerator_?this.resultGenerator_(e.key,e.value):{key:e.key,value:e.value},this.isReverse_){e=e.left;while(!e.isEmpty())this.nodeStack_.push(e),e=e.right}else{e=e.right;while(!e.isEmpty())this.nodeStack_.push(e),e=e.left}return t},t.prototype.hasNext=function(){return this.nodeStack_.length>0},t.prototype.peek=function(){if(0===this.nodeStack_.length)return null;var t=this.nodeStack_[this.nodeStack_.length-1];return this.resultGenerator_?this.resultGenerator_(t.key,t.value):{key:t.key,value:t.value}},t}(),$t=function(){function t(e,n,r,i,o){this.key=e,this.value=n,this.color=null!=r?r:t.RED,this.left=null!=i?i:Zt.EMPTY_NODE,this.right=null!=o?o:Zt.EMPTY_NODE}return t.prototype.copy=function(e,n,r,i,o){return new t(null!=e?e:this.key,null!=n?n:this.value,null!=r?r:this.color,null!=i?i:this.left,null!=o?o:this.right)},t.prototype.count=function(){return this.left.count()+1+this.right.count()},t.prototype.isEmpty=function(){return!1},t.prototype.inorderTraversal=function(t){return this.left.inorderTraversal(t)||t(this.key,this.value)||this.right.inorderTraversal(t)},t.prototype.reverseTraversal=function(t){return this.right.reverseTraversal(t)||t(this.key,this.value)||this.left.reverseTraversal(t)},t.prototype.min_=function(){return this.left.isEmpty()?this:this.left.min_()},t.prototype.minKey=function(){return this.min_().key},t.prototype.maxKey=function(){return this.right.isEmpty()?this.key:this.right.maxKey()},t.prototype.insert=function(t,e,n){var r,i;return i=this,r=n(t,i.key),i=r<0?i.copy(null,null,null,i.left.insert(t,e,n),null):0===r?i.copy(null,e,null,null,null):i.copy(null,null,null,null,i.right.insert(t,e,n)),i.fixUp_()},t.prototype.removeMin_=function(){if(this.left.isEmpty())return Zt.EMPTY_NODE;var t=this;return t.left.isRed_()||t.left.left.isRed_()||(t=t.moveRedLeft_()),t=t.copy(null,null,null,t.left.removeMin_(),null),t.fixUp_()},t.prototype.remove=function(t,e){var n,r;if(n=this,e(t,n.key)<0)n.left.isEmpty()||n.left.isRed_()||n.left.left.isRed_()||(n=n.moveRedLeft_()),n=n.copy(null,null,null,n.left.remove(t,e),null);else{if(n.left.isRed_()&&(n=n.rotateRight_()),n.right.isEmpty()||n.right.isRed_()||n.right.left.isRed_()||(n=n.moveRedRight_()),0===e(t,n.key)){if(n.right.isEmpty())return Zt.EMPTY_NODE;r=n.right.min_(),n=n.copy(r.key,r.value,null,null,n.right.removeMin_())}n=n.copy(null,null,null,null,n.right.remove(t,e))}return n.fixUp_()},t.prototype.isRed_=function(){return this.color},t.prototype.fixUp_=function(){var t=this;return t.right.isRed_()&&!t.left.isRed_()&&(t=t.rotateLeft_()),t.left.isRed_()&&t.left.left.isRed_()&&(t=t.rotateRight_()),t.left.isRed_()&&t.right.isRed_()&&(t=t.colorFlip_()),t},t.prototype.moveRedLeft_=function(){var t=this.colorFlip_();return t.right.left.isRed_()&&(t=t.copy(null,null,null,null,t.right.rotateRight_()),t=t.rotateLeft_(),t=t.colorFlip_()),t},t.prototype.moveRedRight_=function(){var t=this.colorFlip_();return t.left.left.isRed_()&&(t=t.rotateRight_(),t=t.colorFlip_()),t},t.prototype.rotateLeft_=function(){var e=this.copy(null,null,t.RED,null,this.right.left);return this.right.copy(null,null,this.color,e,null)},t.prototype.rotateRight_=function(){var e=this.copy(null,null,t.RED,this.left.right,null);return this.left.copy(null,null,this.color,null,e)},t.prototype.colorFlip_=function(){var t=this.left.copy(null,null,!this.left.color,null,null),e=this.right.copy(null,null,!this.right.color,null,null);return this.copy(null,null,!this.color,t,e)},t.prototype.checkMaxDepth_=function(){var t=this.check_();return Math.pow(2,t)<=this.count()+1},t.prototype.check_=function(){var t;if(this.isRed_()&&this.left.isRed_())throw new Error("Red node has red child("+this.key+","+this.value+")");if(this.right.isRed_())throw new Error("Right child of ("+this.key+","+this.value+") is red");if(t=this.left.check_(),t!==this.right.check_())throw new Error("Black depths differ");return t+(this.isRed_()?0:1)},t.RED=!0,t.BLACK=!1,t}(),Jt=function(){function t(){}return t.prototype.copy=function(t,e,n,r,i){return this},t.prototype.insert=function(t,e,n){return new $t(t,e,null)},t.prototype.remove=function(t,e){return this},t.prototype.count=function(){return 0},t.prototype.isEmpty=function(){return!0},t.prototype.inorderTraversal=function(t){return!1},t.prototype.reverseTraversal=function(t){return!1},t.prototype.minKey=function(){return null},t.prototype.maxKey=function(){return null},t.prototype.check_=function(){return 0},t.prototype.isRed_=function(){return!1},t}(),Zt=function(){function t(e,n){void 0===n&&(n=t.EMPTY_NODE),this.comparator_=e,this.root_=n}return t.prototype.insert=function(e,n){return new t(this.comparator_,this.root_.insert(e,n,this.comparator_).copy(null,null,$t.BLACK,null,null))},t.prototype.remove=function(e){return new t(this.comparator_,this.root_.remove(e,this.comparator_).copy(null,null,$t.BLACK,null,null))},t.prototype.get=function(t){var e,n=this.root_;while(!n.isEmpty()){if(e=this.comparator_(t,n.key),0===e)return n.value;e<0?n=n.left:e>0&&(n=n.right)}return null},t.prototype.getPredecessorKey=function(t){var e,n=this.root_,r=null;while(!n.isEmpty()){if(e=this.comparator_(t,n.key),0===e){if(n.left.isEmpty())return r?r.key:null;n=n.left;while(!n.right.isEmpty())n=n.right;return n.key}e<0?n=n.left:e>0&&(r=n,n=n.right)}throw new Error("Attempted to find predecessor key for a nonexistent key.  What gives?")},t.prototype.isEmpty=function(){return this.root_.isEmpty()},t.prototype.count=function(){return this.root_.count()},t.prototype.minKey=function(){return this.root_.minKey()},t.prototype.maxKey=function(){return this.root_.maxKey()},t.prototype.inorderTraversal=function(t){return this.root_.inorderTraversal(t)},t.prototype.reverseTraversal=function(t){return this.root_.reverseTraversal(t)},t.prototype.getIterator=function(t){return new Xt(this.root_,null,this.comparator_,!1,t)},t.prototype.getIteratorFrom=function(t,e){return new Xt(this.root_,t,this.comparator_,!1,e)},t.prototype.getReverseIteratorFrom=function(t,e){return new Xt(this.root_,t,this.comparator_,!0,e)},t.prototype.getReverseIterator=function(t){return new Xt(this.root_,null,this.comparator_,!0,t)},t.EMPTY_NODE=new Jt,t}(),te=Math.log(2),ee=function(){function t(t){var e=function(t){return parseInt(Math.log(t)/te,10)},n=function(t){return parseInt(Array(t+1).join("1"),2)};this.count=e(t+1),this.current_=this.count-1;var r=n(this.count);this.bits_=t+1&r}return t.prototype.nextBitIsOne=function(){var t=!(this.bits_&1<<this.current_);return this.current_--,t},t}(),ne=function(t,e,n,r){t.sort(e);var i=function(e,r){var o,s,a=r-e;if(0==a)return null;if(1==a)return o=t[e],s=n?n(o):o,new $t(s,o.node,$t.BLACK,null,null);var u=parseInt(a/2,10)+e,h=i(e,u),l=i(u+1,r);return o=t[u],s=n?n(o):o,new $t(s,o.node,$t.BLACK,h,l)},o=function(e){for(var r=null,o=null,s=t.length,a=function(e,r){var o=s-e,a=s;s-=e;var h=i(o+1,a),l=t[o],c=n?n(l):l;u(new $t(c,l.node,r,null,h))},u=function(t){r?(r.left=t,r=t):(o=t,r=t)},h=0;h<e.count;++h){var l=e.nextBitIsOne(),c=Math.pow(2,e.count-(h+1));l?a(c,$t.BLACK):(a(c,$t.BLACK),a(c,$t.RED))}return o},s=new ee(t.length),a=o(s);return new Zt(r||e,a)},re={},ie=function(){function t(t,e){this.indexes_=t,this.indexSet_=e}return Object.defineProperty(t,"Default",{get:function(){return a.assert(re&&Gt,"ChildrenNode.ts has not been loaded"),Yt=Yt||new t({".priority":re},{".priority":Gt}),Yt},enumerable:!0,configurable:!0}),t.prototype.get=function(t){var e=a.safeGet(this.indexes_,t);if(!e)throw new Error("No index defined for "+t);return e instanceof Zt?e:null},t.prototype.hasIndex=function(t){return a.contains(this.indexSet_,t.toString())},t.prototype.addIndex=function(e,n){a.assert(e!==Lt,"KeyIndex always exists and isn't meant to be added to the IndexMap.");var r,i=[],o=!1,u=n.getIterator(Ot.Wrap),h=u.getNext();while(h)o=o||e.isDefinedOn(h.node),i.push(h),h=u.getNext();r=o?ne(i,e.getCompare()):re;var l=e.toString(),c=s.__assign({},this.indexSet_);c[l]=e;var p=s.__assign({},this.indexes_);return p[l]=r,new t(p,c)},t.prototype.addToIndexes=function(e,n){var r=this,i=a.map(this.indexes_,(function(t,i){var o=a.safeGet(r.indexSet_,i);if(a.assert(o,"Missing index implementation for "+i),t===re){if(o.isDefinedOn(e.node)){var s=[],u=n.getIterator(Ot.Wrap),h=u.getNext();while(h)h.name!=e.name&&s.push(h),h=u.getNext();return s.push(e),ne(s,o.getCompare())}return re}var l=n.get(e.name),c=t;return l&&(c=c.remove(new Ot(e.name,l))),c.insert(e,e.node)}));return new t(i,this.indexSet_)},t.prototype.removeFromIndexes=function(e,n){var r=a.map(this.indexes_,(function(t){if(t===re)return t;var r=n.get(e.name);return r?t.remove(new Ot(e.name,r)):t}));return new t(r,this.indexSet_)},t}();
/**
 * @license
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
function oe(t,e){return k(t.name,e.name)}function se(t,e){return k(t,e)}
/**
 * @license
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */var ae=function(){function t(t,e,n){this.children_=t,this.priorityNode_=e,this.indexMap_=n,this.lazyHash_=null,this.priorityNode_&&Vt(this.priorityNode_),this.children_.isEmpty()&&a.assert(!this.priorityNode_||this.priorityNode_.isEmpty(),"An empty node cannot have a priority")}return Object.defineProperty(t,"EMPTY_NODE",{get:function(){return Kt||(Kt=new t(new Zt(se),null,ie.Default))},enumerable:!0,configurable:!0}),t.prototype.isLeafNode=function(){return!1},t.prototype.getPriority=function(){return this.priorityNode_||Kt},t.prototype.updatePriority=function(e){return this.children_.isEmpty()?this:new t(this.children_,e,this.indexMap_)},t.prototype.getImmediateChild=function(t){if(".priority"===t)return this.getPriority();var e=this.children_.get(t);return null===e?Kt:e},t.prototype.getChild=function(t){var e=t.getFront();return null===e?this:this.getImmediateChild(e).getChild(t.popFront())},t.prototype.hasChild=function(t){return null!==this.children_.get(t)},t.prototype.updateImmediateChild=function(e,n){if(a.assert(n,"We should always be passing snapshot nodes"),".priority"===e)return this.updatePriority(n);var r=new Ot(e,n),i=void 0,o=void 0,s=void 0;return n.isEmpty()?(i=this.children_.remove(e),o=this.indexMap_.removeFromIndexes(r,this.children_)):(i=this.children_.insert(e,n),o=this.indexMap_.addToIndexes(r,this.children_)),s=i.isEmpty()?Kt:this.priorityNode_,new t(i,s,o)},t.prototype.updateChild=function(t,e){var n=t.getFront();if(null===n)return e;a.assert(".priority"!==t.getFront()||1===t.getLength(),".priority must be the last token in a path");var r=this.getImmediateChild(n).updateChild(t.popFront(),e);return this.updateImmediateChild(n,r)},t.prototype.isEmpty=function(){return this.children_.isEmpty()},t.prototype.numChildren=function(){return this.children_.count()},t.prototype.val=function(e){if(this.isEmpty())return null;var n={},r=0,i=0,o=!0;if(this.forEachChild(Gt,(function(s,a){n[s]=a.val(e),r++,o&&t.INTEGER_REGEXP_.test(s)?i=Math.max(i,Number(s)):o=!1})),!e&&o&&i<2*r){var s=[];for(var a in n)s[a]=n[a];return s}return e&&!this.getPriority().isEmpty()&&(n[".priority"]=this.getPriority().val()),n},t.prototype.hash=function(){if(null===this.lazyHash_){var t="";this.getPriority().isEmpty()||(t+="priority:"+Ut(this.getPriority().val())+":"),this.forEachChild(Gt,(function(e,n){var r=n.hash();""!==r&&(t+=":"+e+":"+r)})),this.lazyHash_=""===t?"":v(t)}return this.lazyHash_},t.prototype.getPredecessorChildName=function(t,e,n){var r=this.resolveIndex_(n);if(r){var i=r.getPredecessorKey(new Ot(t,e));return i?i.name:null}return this.children_.getPredecessorKey(t)},t.prototype.getFirstChildName=function(t){var e=this.resolveIndex_(t);if(e){var n=e.minKey();return n&&n.name}return this.children_.minKey()},t.prototype.getFirstChild=function(t){var e=this.getFirstChildName(t);return e?new Ot(e,this.children_.get(e)):null},t.prototype.getLastChildName=function(t){var e=this.resolveIndex_(t);if(e){var n=e.maxKey();return n&&n.name}return this.children_.maxKey()},t.prototype.getLastChild=function(t){var e=this.getLastChildName(t);return e?new Ot(e,this.children_.get(e)):null},t.prototype.forEachChild=function(t,e){var n=this.resolveIndex_(t);return n?n.inorderTraversal((function(t){return e(t.name,t.node)})):this.children_.inorderTraversal(e)},t.prototype.getIterator=function(t){return this.getIteratorFrom(t.minPost(),t)},t.prototype.getIteratorFrom=function(t,e){var n=this.resolveIndex_(e);if(n)return n.getIteratorFrom(t,(function(t){return t}));var r=this.children_.getIteratorFrom(t.name,Ot.Wrap),i=r.peek();while(null!=i&&e.compare(i,t)<0)r.getNext(),i=r.peek();return r},t.prototype.getReverseIterator=function(t){return this.getReverseIteratorFrom(t.maxPost(),t)},t.prototype.getReverseIteratorFrom=function(t,e){var n=this.resolveIndex_(e);if(n)return n.getReverseIteratorFrom(t,(function(t){return t}));var r=this.children_.getReverseIteratorFrom(t.name,Ot.Wrap),i=r.peek();while(null!=i&&e.compare(i,t)>0)r.getNext(),i=r.peek();return r},t.prototype.compareTo=function(t){return this.isEmpty()?t.isEmpty()?0:-1:t.isLeafNode()||t.isEmpty()?1:t===he?-1:0},t.prototype.withIndex=function(e){if(e===Lt||this.indexMap_.hasIndex(e))return this;var n=this.indexMap_.addIndex(e,this.children_);return new t(this.children_,this.priorityNode_,n)},t.prototype.isIndexed=function(t){return t===Lt||this.indexMap_.hasIndex(t)},t.prototype.equals=function(t){if(t===this)return!0;if(t.isLeafNode())return!1;var e=t;if(this.getPriority().equals(e.getPriority())){if(this.children_.count()===e.children_.count()){var n=this.getIterator(Gt),r=e.getIterator(Gt),i=n.getNext(),o=r.getNext();while(i&&o){if(i.name!==o.name||!i.node.equals(o.node))return!1;i=n.getNext(),o=r.getNext()}return null===i&&null===o}return!1}return!1},t.prototype.resolveIndex_=function(t){return t===Lt?null:this.indexMap_.get(t.toString())},t.INTEGER_REGEXP_=/^(0|[1-9]\d*)$/,t}(),ue=function(t){function e(){return t.call(this,new Zt(se),ae.EMPTY_NODE,ie.Default)||this}return s.__extends(e,t),e.prototype.compareTo=function(t){return t===this?0:1},e.prototype.equals=function(t){return t===this},e.prototype.getPriority=function(){return this},e.prototype.getImmediateChild=function(t){return ae.EMPTY_NODE},e.prototype.isEmpty=function(){return!1},e}(ae),he=new ue;Object.defineProperties(Ot,{MIN:{value:new Ot(D,ae.EMPTY_NODE)},MAX:{value:new Ot(x,he)}}),Ft.__EMPTY_NODE=ae.EMPTY_NODE,Ht.__childrenNodeConstructor=ae,Mt(he),Bt(he);
/**
 * @license
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
var le=!0;function ce(t,e){if(void 0===e&&(e=null),null===t)return ae.EMPTY_NODE;if("object"===typeof t&&".priority"in t&&(e=t[".priority"]),a.assert(null===e||"string"===typeof e||"number"===typeof e||"object"===typeof e&&".sv"in e,"Invalid priority type found: "+typeof e),"object"===typeof t&&".value"in t&&null!==t[".value"]&&(t=t[".value"]),"object"!==typeof t||".sv"in t){var n=t;return new Ht(n,ce(e))}if(t instanceof Array||!le){var r=ae.EMPTY_NODE;return M(t,(function(e,n){if(a.contains(t,e)&&"."!==e.substring(0,1)){var i=ce(n);!i.isLeafNode()&&i.isEmpty()||(r=r.updateImmediateChild(e,i))}})),r.updatePriority(ce(e))}var i=[],o=!1,s=t;if(M(s,(function(t,e){if("."!==t.substring(0,1)){var n=ce(e);n.isEmpty()||(o=o||!n.getPriority().isEmpty(),i.push(new Ot(t,n)))}})),0==i.length)return ae.EMPTY_NODE;var u=ne(i,oe,(function(t){return t.name}),se);if(o){var h=ne(i,Gt.getCompare());return new ae(u,ce(e),new ie({".priority":h},{".priority":Gt}))}return new ae(u,ce(e),ie.Default)}jt(ce);
/**
 * @license
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
var pe,de,fe=function(t){function e(){return null!==t&&t.apply(this,arguments)||this}return s.__extends(e,t),e.prototype.compare=function(t,e){var n=t.node.compareTo(e.node);return 0===n?k(t.name,e.name):n},e.prototype.isDefinedOn=function(t){return!0},e.prototype.indexedValueChanged=function(t,e){return!t.equals(e)},e.prototype.minPost=function(){return Ot.MIN},e.prototype.maxPost=function(){return Ot.MAX},e.prototype.makePost=function(t,e){var n=ce(t);return new Ot(e,n)},e.prototype.toString=function(){return".value"},e}(At),_e=new fe,ye=function(t){function e(e){var n=t.call(this)||this;return n.indexPath_=e,a.assert(!e.isEmpty()&&".priority"!==e.getFront(),"Can't create PathIndex with empty path or .priority key"),n}return s.__extends(e,t),e.prototype.extractChild=function(t){return t.getChild(this.indexPath_)},e.prototype.isDefinedOn=function(t){return!t.getChild(this.indexPath_).isEmpty()},e.prototype.compare=function(t,e){var n=this.extractChild(t.node),r=this.extractChild(e.node),i=n.compareTo(r);return 0===i?k(t.name,e.name):i},e.prototype.makePost=function(t,e){var n=ce(t),r=ae.EMPTY_NODE.updateChild(this.indexPath_,n);return new Ot(e,r)},e.prototype.maxPost=function(){var t=ae.EMPTY_NODE.updateChild(this.indexPath_,he);return new Ot(x,t)},e.prototype.toString=function(){return this.indexPath_.slice().join("/")},e}(At),ve=function(){function t(t,e,n){this.node_=t,this.ref_=e,this.index_=n}return t.prototype.val=function(){return a.validateArgCount("DataSnapshot.val",0,0,arguments.length),this.node_.val()},t.prototype.exportVal=function(){return a.validateArgCount("DataSnapshot.exportVal",0,0,arguments.length),this.node_.val(!0)},t.prototype.toJSON=function(){return a.validateArgCount("DataSnapshot.toJSON",0,1,arguments.length),this.exportVal()},t.prototype.exists=function(){return a.validateArgCount("DataSnapshot.exists",0,0,arguments.length),!this.node_.isEmpty()},t.prototype.child=function(e){a.validateArgCount("DataSnapshot.child",0,1,arguments.length),e=String(e),St("DataSnapshot.child",1,e,!1);var n=new K(e),r=this.ref_.child(n);return new t(this.node_.getChild(n),r,Gt)},t.prototype.hasChild=function(t){a.validateArgCount("DataSnapshot.hasChild",1,1,arguments.length),St("DataSnapshot.hasChild",1,t,!1);var e=new K(t);return!this.node_.getChild(e).isEmpty()},t.prototype.getPriority=function(){return a.validateArgCount("DataSnapshot.getPriority",0,0,arguments.length),this.node_.getPriority().val()},t.prototype.forEach=function(e){var n=this;if(a.validateArgCount("DataSnapshot.forEach",1,1,arguments.length),a.validateCallback("DataSnapshot.forEach",1,e,!1),this.node_.isLeafNode())return!1;var r=this.node_;return!!r.forEachChild(this.index_,(function(r,i){return e(new t(i,n.ref_.child(r),Gt))}))},t.prototype.hasChildren=function(){return a.validateArgCount("DataSnapshot.hasChildren",0,0,arguments.length),!this.node_.isLeafNode()&&!this.node_.isEmpty()},Object.defineProperty(t.prototype,"key",{get:function(){return this.ref_.getKey()},enumerable:!0,configurable:!0}),t.prototype.numChildren=function(){return a.validateArgCount("DataSnapshot.numChildren",0,0,arguments.length),this.node_.numChildren()},t.prototype.getRef=function(){return a.validateArgCount("DataSnapshot.ref",0,0,arguments.length),this.ref_},Object.defineProperty(t.prototype,"ref",{get:function(){return this.getRef()},enumerable:!0,configurable:!0}),t}(),ge=function(){function t(t,e,n,r){this.eventType=t,this.eventRegistration=e,this.snapshot=n,this.prevName=r}return t.prototype.getPath=function(){var t=this.snapshot.getRef();return"value"===this.eventType?t.path:t.getParent().path},t.prototype.getEventType=function(){return this.eventType},t.prototype.getEventRunner=function(){return this.eventRegistration.getEventRunner(this)},t.prototype.toString=function(){return this.getPath().toString()+":"+this.eventType+":"+a.stringify(this.snapshot.exportVal())},t}(),me=function(){function t(t,e,n){this.eventRegistration=t,this.error=e,this.path=n}return t.prototype.getPath=function(){return this.path},t.prototype.getEventType=function(){return"cancel"},t.prototype.getEventRunner=function(){return this.eventRegistration.getEventRunner(this)},t.prototype.toString=function(){return this.path.toString()+":cancel"},t}(),Ce=function(){function t(t,e,n){this.callback_=t,this.cancelCallback_=e,this.context_=n}return t.prototype.respondsTo=function(t){return"value"===t},t.prototype.createEvent=function(t,e){var n=e.getQueryParams().getIndex();return new ge("value",this,new ve(t.snapshotNode,e.getRef(),n))},t.prototype.getEventRunner=function(t){var e=this.context_;if("cancel"===t.getEventType()){a.assert(this.cancelCallback_,"Raising a cancel event on a listener with no cancel callback");var n=this.cancelCallback_;return function(){n.call(e,t.error)}}var r=this.callback_;return function(){r.call(e,t.snapshot)}},t.prototype.createCancelEvent=function(t,e){return this.cancelCallback_?new me(this,t,e):null},t.prototype.matches=function(e){return e instanceof t&&(!e.callback_||!this.callback_||e.callback_===this.callback_&&e.context_===this.context_)},t.prototype.hasAnyCallback=function(){return null!==this.callback_},t}(),Ee=function(){function t(t,e,n){this.callbacks_=t,this.cancelCallback_=e,this.context_=n}return t.prototype.respondsTo=function(t){var e="children_added"===t?"child_added":t;return e="children_removed"===e?"child_removed":e,a.contains(this.callbacks_,e)},t.prototype.createCancelEvent=function(t,e){return this.cancelCallback_?new me(this,t,e):null},t.prototype.createEvent=function(t,e){a.assert(null!=t.childName,"Child events should have a childName.");var n=e.getRef().child(t.childName),r=e.getQueryParams().getIndex();return new ge(t.type,this,new ve(t.snapshotNode,n,r),t.prevName)},t.prototype.getEventRunner=function(t){var e=this.context_;if("cancel"===t.getEventType()){a.assert(this.cancelCallback_,"Raising a cancel event on a listener with no cancel callback");var n=this.cancelCallback_;return function(){n.call(e,t.error)}}var r=this.callbacks_[t.eventType];return function(){r.call(e,t.snapshot,t.prevName)}},t.prototype.matches=function(e){var n=this;if(e instanceof t){if(!this.callbacks_||!e.callbacks_)return!0;if(this.context_===e.context_){var r=Object.keys(e.callbacks_),i=Object.keys(this.callbacks_),o=r.length,s=i.length;if(o===s){if(1===o){var a=r[0],u=i[0];return u===a&&(!e.callbacks_[a]||!this.callbacks_[u]||e.callbacks_[a]===this.callbacks_[u])}return i.every((function(t){return e.callbacks_[t]===n.callbacks_[t]}))}}}return!1},t.prototype.hasAnyCallback=function(){return null!==this.callbacks_},t}(),we=function(){function t(t,e,n,r){this.repo=t,this.path=e,this.queryParams_=n,this.orderByCalled_=r}return Object.defineProperty(t,"__referenceConstructor",{get:function(){return a.assert(pe,"Reference.ts has not been loaded"),pe},set:function(t){pe=t},enumerable:!0,configurable:!0}),t.validateQueryEndpoints_=function(t){var e=null,n=null;if(t.hasStart()&&(e=t.getIndexStartValue()),t.hasEnd()&&(n=t.getIndexEndValue()),t.getIndex()===Lt){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 argument passed to startAt(), endAt(),or equalTo() must be a string.";if(t.hasStart()){var o=t.getIndexStartName();if(o!=D)throw new Error(r);if("string"!==typeof e)throw new Error(i)}if(t.hasEnd()){var s=t.getIndexEndName();if(s!=x)throw new Error(r);if("string"!==typeof n)throw new Error(i)}}else if(t.getIndex()===Gt){if(null!=e&&!vt(e)||null!=n&&!vt(n))throw new Error("Query: When ordering by priority, the first argument passed to startAt(), endAt(), or equalTo() must be a valid priority value (null, a number, or a string).")}else if(a.assert(t.getIndex()instanceof ye||t.getIndex()===_e,"unknown index type."),null!=e&&"object"===typeof e||null!=n&&"object"===typeof n)throw new Error("Query: First argument passed to startAt(), endAt(), or equalTo() cannot be an object.")},t.validateLimit_=function(t){if(t.hasStart()&&t.hasEnd()&&t.hasLimit()&&!t.hasAnchoredLimit())throw new Error("Query: Can't combine startAt(), endAt(), and limit(). Use limitToFirst() or limitToLast() instead.")},t.prototype.validateNoPreviousOrderByCall_=function(t){if(!0===this.orderByCalled_)throw new Error(t+": You can't combine multiple orderBy calls.")},t.prototype.getQueryParams=function(){return this.queryParams_},t.prototype.getRef=function(){return a.validateArgCount("Query.ref",0,0,arguments.length),new t.__referenceConstructor(this.repo,this.path)},t.prototype.on=function(e,n,r,i){a.validateArgCount("Query.on",2,4,arguments.length),bt("Query.on",1,e,!1),a.validateCallback("Query.on",2,n,!1);var o=t.getCancelAndContextArgs_("Query.on",r,i);if("value"===e)this.onValueEvent(n,o.cancel,o.context);else{var s={};s[e]=n,this.onChildEvent(s,o.cancel,o.context)}return n},t.prototype.onValueEvent=function(t,e,n){var r=new Ce(t,e||null,n||null);this.repo.addEventCallbackForQuery(this,r)},t.prototype.onChildEvent=function(t,e,n){var r=new Ee(t,e,n);this.repo.addEventCallbackForQuery(this,r)},t.prototype.off=function(t,e,n){a.validateArgCount("Query.off",0,3,arguments.length),bt("Query.off",1,t,!0),a.validateCallback("Query.off",2,e,!0),a.validateContextObject("Query.off",3,n,!0);var r=null,i=null;if("value"===t){var o=e||null;r=new Ce(o,null,n||null)}else t&&(e&&(i={},i[t]=e),r=new Ee(i,null,n||null));this.repo.removeEventCallbackForQuery(this,r)},t.prototype.once=function(e,n,r,i){var o=this;a.validateArgCount("Query.once",1,4,arguments.length),bt("Query.once",1,e,!1),a.validateCallback("Query.once",2,n,!0);var s=t.getCancelAndContextArgs_("Query.once",r,i),u=!0,h=new a.Deferred;h.promise.catch((function(){}));var l=function(t){u&&(u=!1,o.off(e,l),n&&n.bind(s.context)(t),h.resolve(t))};return this.on(e,l,(function(t){o.off(e,l),s.cancel&&s.cancel.bind(s.context)(t),h.reject(t)})),h.promise},t.prototype.limitToFirst=function(e){if(a.validateArgCount("Query.limitToFirst",1,1,arguments.length),"number"!==typeof e||Math.floor(e)!==e||e<=0)throw new Error("Query.limitToFirst: First argument must be a positive integer.");if(this.queryParams_.hasLimit())throw new Error("Query.limitToFirst: Limit was already set (by another call to limit, limitToFirst, or limitToLast).");return new t(this.repo,this.path,this.queryParams_.limitToFirst(e),this.orderByCalled_)},t.prototype.limitToLast=function(e){if(a.validateArgCount("Query.limitToLast",1,1,arguments.length),"number"!==typeof e||Math.floor(e)!==e||e<=0)throw new Error("Query.limitToLast: First argument must be a positive integer.");if(this.queryParams_.hasLimit())throw new Error("Query.limitToLast: Limit was already set (by another call to limit, limitToFirst, or limitToLast).");return new t(this.repo,this.path,this.queryParams_.limitToLast(e),this.orderByCalled_)},t.prototype.orderByChild=function(e){if(a.validateArgCount("Query.orderByChild",1,1,arguments.length),"$key"===e)throw new Error('Query.orderByChild: "$key" is invalid.  Use Query.orderByKey() instead.');if("$priority"===e)throw new Error('Query.orderByChild: "$priority" is invalid.  Use Query.orderByPriority() instead.');if("$value"===e)throw new Error('Query.orderByChild: "$value" is invalid.  Use Query.orderByValue() instead.');St("Query.orderByChild",1,e,!1),this.validateNoPreviousOrderByCall_("Query.orderByChild");var n=new K(e);if(n.isEmpty())throw new Error("Query.orderByChild: cannot pass in empty path.  Use Query.orderByValue() instead.");var r=new ye(n),i=this.queryParams_.orderBy(r);return t.validateQueryEndpoints_(i),new t(this.repo,this.path,i,!0)},t.prototype.orderByKey=function(){a.validateArgCount("Query.orderByKey",0,0,arguments.length),this.validateNoPreviousOrderByCall_("Query.orderByKey");var e=this.queryParams_.orderBy(Lt);return t.validateQueryEndpoints_(e),new t(this.repo,this.path,e,!0)},t.prototype.orderByPriority=function(){a.validateArgCount("Query.orderByPriority",0,0,arguments.length),this.validateNoPreviousOrderByCall_("Query.orderByPriority");var e=this.queryParams_.orderBy(Gt);return t.validateQueryEndpoints_(e),new t(this.repo,this.path,e,!0)},t.prototype.orderByValue=function(){a.validateArgCount("Query.orderByValue",0,0,arguments.length),this.validateNoPreviousOrderByCall_("Query.orderByValue");var e=this.queryParams_.orderBy(_e);return t.validateQueryEndpoints_(e),new t(this.repo,this.path,e,!0)},t.prototype.startAt=function(e,n){void 0===e&&(e=null),a.validateArgCount("Query.startAt",0,2,arguments.length),gt("Query.startAt",1,e,this.path,!0),Tt("Query.startAt",2,n,!0);var r=this.queryParams_.startAt(e,n);if(t.validateLimit_(r),t.validateQueryEndpoints_(r),this.queryParams_.hasStart())throw new Error("Query.startAt: Starting point was already set (by another call to startAt or equalTo).");return void 0===e&&(e=null,n=null),new t(this.repo,this.path,r,this.orderByCalled_)},t.prototype.endAt=function(e,n){void 0===e&&(e=null),a.validateArgCount("Query.endAt",0,2,arguments.length),gt("Query.endAt",1,e,this.path,!0),Tt("Query.endAt",2,n,!0);var r=this.queryParams_.endAt(e,n);if(t.validateLimit_(r),t.validateQueryEndpoints_(r),this.queryParams_.hasEnd())throw new Error("Query.endAt: Ending point was already set (by another call to endAt or equalTo).");return new t(this.repo,this.path,r,this.orderByCalled_)},t.prototype.equalTo=function(t,e){if(a.validateArgCount("Query.equalTo",1,2,arguments.length),gt("Query.equalTo",1,t,this.path,!1),Tt("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)},t.prototype.toString=function(){return a.validateArgCount("Query.toString",0,0,arguments.length),this.repo.toString()+this.path.toUrlEncodedString()},t.prototype.toJSON=function(){return a.validateArgCount("Query.toJSON",0,1,arguments.length),this.toString()},t.prototype.queryObject=function(){return this.queryParams_.getQueryObject()},t.prototype.queryIdentifier=function(){var t=this.queryObject(),e=F(t);return"{}"===e?"default":e},t.prototype.isEqual=function(e){if(a.validateArgCount("Query.isEqual",1,1,arguments.length),!(e instanceof t)){var n="Query.isEqual failed: First argument must be an instance of firebase.database.Query.";throw new Error(n)}var r=this.repo===e.repo,i=this.path.equals(e.path),o=this.queryIdentifier()===e.queryIdentifier();return r&&i&&o},t.getCancelAndContextArgs_=function(t,e,n){var r={cancel:null,context:null};if(e&&n)r.cancel=e,a.validateCallback(t,3,r.cancel,!0),r.context=n,a.validateContextObject(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(a.errorPrefix(t,3,!0)+" must either be a cancel callback or a context object.");r.cancel=e}return r},Object.defineProperty(t.prototype,"ref",{get:function(){return this.getRef()},enumerable:!0,configurable:!0}),t}(),be=function(){function t(){this.value=null,this.children=new Map}return t.prototype.find=function(t){if(null!=this.value)return this.value.getChild(t);if(!t.isEmpty()&&this.children.size>0){var e=t.getFront();if(t=t.popFront(),this.children.has(e)){var n=this.children.get(e);return n.find(t)}return null}return null},t.prototype.remember=function(e,n){if(e.isEmpty())this.value=n,this.children.clear();else if(null!==this.value)this.value=this.value.updateChild(e,n);else{var r=e.getFront();this.children.has(r)||this.children.set(r,new t);var i=this.children.get(r);e=e.popFront(),i.remember(e,n)}},t.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(Gt,(function(t,e){n.remember(new K(t),e)})),this.forget(t)}if(this.children.size>0){var r=t.getFront();if(t=t.popFront(),this.children.has(r)){var i=this.children.get(r).forget(t);i&&this.children.delete(r)}return 0===this.children.size}return!0},t.prototype.forEachTree=function(t,e){null!==this.value?e(t,this.value):this.forEachChild((function(n,r){var i=new K(t.toString()+"/"+n);r.forEachTree(i,e)}))},t.prototype.forEachChild=function(t){this.children.forEach((function(e,n){t(n,e)}))},t}(),Te=function(t){return t=t||{},t["timestamp"]=t["timestamp"]||(new Date).getTime(),t},Se=function(t,e){return t&&"object"===typeof t?(a.assert(".sv"in t,"Unexpected leaf node or priority contents"),e[t[".sv"]]):t},Ne=function(t,e){var n=new be;return t.forEachTree(new K(""),(function(t,r){n.remember(t,Ie(r,e))})),n},Ie=function(t,e){var n,r=t.getPriority().val(),i=Se(r,e);if(t.isLeafNode()){var o=t,s=Se(o.getValue(),e);return s!==o.getValue()||i!==o.getPriority().val()?new Ht(s,ce(i)):t}var a=t;return n=a,i!==a.getPriority().val()&&(n=n.updatePriority(new Ht(i))),a.forEachChild(Gt,(function(t,r){var i=Ie(r,e);i!==r&&(n=n.updateImmediateChild(t,i))})),n};(function(t){t[t["OVERWRITE"]=0]="OVERWRITE",t[t["MERGE"]=1]="MERGE",t[t["ACK_USER_WRITE"]=2]="ACK_USER_WRITE",t[t["LISTEN_COMPLETE"]=3]="LISTEN_COMPLETE"})(de||(de={}));var Pe,Re,De=function(){function t(t,e,n,r){this.fromUser=t,this.fromServer=e,this.queryId=n,this.tagged=r,a.assert(!r||e,"Tagged queries must be from server.")}return t.User=new t(!0,!1,null,!1),t.Server=new t(!1,!0,null,!1),t.forServerTaggedQuery=function(e){return new t(!1,!0,e,!0)},t}(),xe=function(){function t(t,e,n){this.path=t,this.affectedTree=e,this.revert=n,this.type=de.ACK_USER_WRITE,this.source=De.User}return t.prototype.operationForChild=function(e){if(this.path.isEmpty()){if(null!=this.affectedTree.value)return a.assert(this.affectedTree.children.isEmpty(),"affectedTree should not have overlapping affected paths."),this;var n=this.affectedTree.subtree(new K(e));return new t(K.Empty,n,this.revert)}return a.assert(this.path.getFront()===e,"operationForChild called for unrelated child."),new t(this.path.popFront(),this.affectedTree,this.revert)},t}(),ke=function(){return Pe||(Pe=new Zt(O)),Pe},Oe=function(){function t(t,e){void 0===e&&(e=ke()),this.value=t,this.children=e}return t.fromObject=function(e){var n=t.Empty;return M(e,(function(t,e){n=n.set(new K(t),e)})),n},t.prototype.isEmpty=function(){return null===this.value&&this.children.isEmpty()},t.prototype.findRootMostMatchingPathAndValue=function(t,e){if(null!=this.value&&e(this.value))return{path:K.Empty,value:this.value};if(t.isEmpty())return null;var n=t.getFront(),r=this.children.get(n);if(null!==r){var i=r.findRootMostMatchingPathAndValue(t.popFront(),e);if(null!=i){var o=new K(n).child(i.path);return{path:o,value:i.value}}return null}return null},t.prototype.findRootMostValueAndPath=function(t){return this.findRootMostMatchingPathAndValue(t,(function(){return!0}))},t.prototype.subtree=function(e){if(e.isEmpty())return this;var n=e.getFront(),r=this.children.get(n);return null!==r?r.subtree(e.popFront()):t.Empty},t.prototype.set=function(e,n){if(e.isEmpty())return new t(n,this.children);var r=e.getFront(),i=this.children.get(r)||t.Empty,o=i.set(e.popFront(),n),s=this.children.insert(r,o);return new t(this.value,s)},t.prototype.remove=function(e){if(e.isEmpty())return this.children.isEmpty()?t.Empty:new t(null,this.children);var n=e.getFront(),r=this.children.get(n);if(r){var i=r.remove(e.popFront()),o=void 0;return o=i.isEmpty()?this.children.remove(n):this.children.insert(n,i),null===this.value&&o.isEmpty()?t.Empty:new t(this.value,o)}return this},t.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},t.prototype.setTree=function(e,n){if(e.isEmpty())return n;var r=e.getFront(),i=this.children.get(r)||t.Empty,o=i.setTree(e.popFront(),n),s=void 0;return s=o.isEmpty()?this.children.remove(r):this.children.insert(r,o),new t(this.value,s)},t.prototype.fold=function(t){return this.fold_(K.Empty,t)},t.prototype.fold_=function(t,e){var n={};return this.children.inorderTraversal((function(r,i){n[r]=i.fold_(t.child(r),e)})),e(t,this.value,n)},t.prototype.findOnPath=function(t,e){return this.findOnPath_(t,K.Empty,e)},t.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},t.prototype.foreachOnPath=function(t,e){return this.foreachOnPath_(t,K.Empty,e)},t.prototype.foreachOnPath_=function(e,n,r){if(e.isEmpty())return this;this.value&&r(n,this.value);var i=e.getFront(),o=this.children.get(i);return o?o.foreachOnPath_(e.popFront(),n.child(i),r):t.Empty},t.prototype.foreach=function(t){this.foreach_(K.Empty,t)},t.prototype.foreach_=function(t,e){this.children.inorderTraversal((function(n,r){r.foreach_(t.child(n),e)})),this.value&&e(t,this.value)},t.prototype.foreachChild=function(t){this.children.inorderTraversal((function(e,n){n.value&&t(e,n.value)}))},t.Empty=new t(null),t}(),Ae=function(){function t(t,e){this.source=t,this.path=e,this.type=de.LISTEN_COMPLETE}return t.prototype.operationForChild=function(e){return this.path.isEmpty()?new t(this.source,K.Empty):new t(this.source,this.path.popFront())},t}(),Fe=function(){function t(t,e,n){this.source=t,this.path=e,this.snap=n,this.type=de.OVERWRITE}return t.prototype.operationForChild=function(e){return this.path.isEmpty()?new t(this.source,K.Empty,this.snap.getImmediateChild(e)):new t(this.source,this.path.popFront(),this.snap)},t}(),Le=function(){function t(t,e,n){this.source=t,this.path=e,this.children=n,this.type=de.MERGE}return t.prototype.operationForChild=function(e){if(this.path.isEmpty()){var n=this.children.subtree(new K(e));return n.isEmpty()?null:n.value?new Fe(this.source,K.Empty,n.value):new t(this.source,K.Empty,n)}return a.assert(this.path.getFront()===e,"Can't get a merge for a child not on the path of the operation"),new t(this.source,this.path.popFront(),this.children)},t.prototype.toString=function(){return"Operation("+this.path+": "+this.source.toString()+" merge: "+this.children.toString()+")"},t}(),Me=function(){function t(t,e,n){this.node_=t,this.fullyInitialized_=e,this.filtered_=n}return t.prototype.isFullyInitialized=function(){return this.fullyInitialized_},t.prototype.isFiltered=function(){return this.filtered_},t.prototype.isCompleteForPath=function(t){if(t.isEmpty())return this.isFullyInitialized()&&!this.filtered_;var e=t.getFront();return this.isCompleteForChild(e)},t.prototype.isCompleteForChild=function(t){return this.isFullyInitialized()&&!this.filtered_||this.node_.hasChild(t)},t.prototype.getNode=function(){return this.node_},t}(),We=function(){function t(t,e){this.eventCache_=t,this.serverCache_=e}return t.prototype.updateEventSnap=function(e,n,r){return new t(new Me(e,n,r),this.serverCache_)},t.prototype.updateServerSnap=function(e,n,r){return new t(this.eventCache_,new Me(e,n,r))},t.prototype.getEventCache=function(){return this.eventCache_},t.prototype.getCompleteEventSnap=function(){return this.eventCache_.isFullyInitialized()?this.eventCache_.getNode():null},t.prototype.getServerCache=function(){return this.serverCache_},t.prototype.getCompleteServerSnap=function(){return this.serverCache_.isFullyInitialized()?this.serverCache_.getNode():null},t.Empty=new t(new Me(ae.EMPTY_NODE,!1,!1),new Me(ae.EMPTY_NODE,!1,!1)),t}(),Qe=function(){function t(t,e,n,r,i){this.type=t,this.snapshotNode=e,this.childName=n,this.oldSnap=r,this.prevName=i}return t.valueChange=function(e){return new t(t.VALUE,e)},t.childAddedChange=function(e,n){return new t(t.CHILD_ADDED,n,e)},t.childRemovedChange=function(e,n){return new t(t.CHILD_REMOVED,n,e)},t.childChangedChange=function(e,n,r){return new t(t.CHILD_CHANGED,n,e,r)},t.childMovedChange=function(e,n){return new t(t.CHILD_MOVED,n,e)},t.CHILD_ADDED="child_added",t.CHILD_REMOVED="child_removed",t.CHILD_CHANGED="child_changed",t.CHILD_MOVED="child_moved",t.VALUE="value",t}(),qe=function(){function t(t){this.index_=t}return t.prototype.updateChild=function(t,e,n,r,i,o){a.assert(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(Qe.childRemovedChange(e,s)):a.assert(t.isLeafNode(),"A child remove without an old child only 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e=t.type,n=t.childName;a.assert(e==Qe.CHILD_ADDED||e==Qe.CHILD_CHANGED||e==Qe.CHILD_REMOVED,"Only child changes supported for tracking"),a.assert(".priority"!==n,"Only non-priority child changes can be tracked.");var r=this.changeMap.get(n);if(r){var i=r.type;if(e==Qe.CHILD_ADDED&&i==Qe.CHILD_REMOVED)this.changeMap.set(n,Qe.childChangedChange(n,t.snapshotNode,r.snapshotNode));else if(e==Qe.CHILD_REMOVED&&i==Qe.CHILD_ADDED)this.changeMap.delete(n);else if(e==Qe.CHILD_REMOVED&&i==Qe.CHILD_CHANGED)this.changeMap.set(n,Qe.childRemovedChange(n,r.oldSnap));else if(e==Qe.CHILD_CHANGED&&i==Qe.CHILD_ADDED)this.changeMap.set(n,Qe.childAddedChange(n,t.snapshotNode));else{if(e!=Qe.CHILD_CHANGED||i!=Qe.CHILD_CHANGED)throw a.assertionError("Illegal combination of changes: "+t+" occurred after "+r);this.changeMap.set(n,Qe.childChangedChange(n,t.snapshotNode,r.oldSnap))}}else this.changeMap.set(n,t)},t.prototype.getChanges=function(){return Array.from(this.changeMap.values())},t}(),Ve=function(){function t(){}return t.prototype.getCompleteChild=function(t){return null},t.prototype.getChildAfterChild=function(t,e,n){return null},t}(),He=new Ve,je=function(){function t(t,e,n){void 0===n&&(n=null),this.writes_=t,this.viewCache_=e,this.optCompleteServerCache_=n}return t.prototype.getCompleteChild=function(t){var e=this.viewCache_.getEventCache();if(e.isCompleteForChild(t))return e.getNode().getImmediateChild(t);var n=null!=this.optCompleteServerCache_?new Me(this.optCompleteServerCache_,!0,!1):this.viewCache_.getServerCache();return this.writes_.calcCompleteChild(t,n)},t.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]},t}(),Be=function(){function t(t,e){this.viewCache=t,this.changes=e}return t}(),Ye=function(){function t(t){this.filter_=t}return t.prototype.assertIndexed=function(t){a.assert(t.getEventCache().getNode().isIndexed(this.filter_.getIndex()),"Event snap not indexed"),a.assert(t.getServerCache().getNode().isIndexed(this.filter_.getIndex()),"Server snap not indexed")},t.prototype.applyOperation=function(e,n,r,i){var o,s,u=new Ue;if(n.type===de.OVERWRITE){var h=n;h.source.fromUser?o=this.applyUserOverwrite_(e,h.path,h.snap,r,i,u):(a.assert(h.source.fromServer,"Unknown source."),s=h.source.tagged||e.getServerCache().isFiltered()&&!h.path.isEmpty(),o=this.applyServerOverwrite_(e,h.path,h.snap,r,i,s,u))}else if(n.type===de.MERGE){var l=n;l.source.fromUser?o=this.applyUserMerge_(e,l.path,l.children,r,i,u):(a.assert(l.source.fromServer,"Unknown source."),s=l.source.tagged||e.getServerCache().isFiltered(),o=this.applyServerMerge_(e,l.path,l.children,r,i,s,u))}else if(n.type===de.ACK_USER_WRITE){var c=n;o=c.revert?this.revertUserWrite_(e,c.path,r,i,u):this.ackUserWrite_(e,c.path,c.affectedTree,r,i,u)}else{if(n.type!==de.LISTEN_COMPLETE)throw a.assertionError("Unknown operation type: "+n.type);o=this.listenComplete_(e,n.path,r,u)}var p=u.getChanges();return t.maybeAddValueEvent_(e,o,p),new Be(o,p)},t.maybeAddValueEvent_=function(t,e,n){var r=e.getEventCache();if(r.isFullyInitialized()){var i=r.getNode().isLeafNode()||r.getNode().isEmpty(),o=t.getCompleteEventSnap();(n.length>0||!t.getEventCache().isFullyInitialized()||i&&!r.getNode().equals(o)||!r.getNode().getPriority().equals(o.getPriority()))&&n.push(Qe.valueChange(e.getCompleteEventSnap()))}},t.prototype.generateEventCacheAfterServerEvent_=function(t,e,n,r,i){var o=t.getEventCache();if(null!=n.shadowingWrite(e))return t;var s=void 0,u=void 0;if(e.isEmpty())if(a.assert(t.getServerCache().isFullyInitialized(),"If change path is empty, we must have complete server data"),t.getServerCache().isFiltered()){var h=t.getCompleteServerSnap(),l=h instanceof ae?h:ae.EMPTY_NODE,c=n.calcCompleteEventChildren(l);s=this.filter_.updateFullNode(t.getEventCache().getNode(),c,i)}else{var p=n.calcCompleteEventCache(t.getCompleteServerSnap());s=this.filter_.updateFullNode(t.getEventCache().getNode(),p,i)}else{var d=e.getFront();if(".priority"==d){a.assert(1==e.getLength(),"Can't have a priority with additional path components");var f=o.getNode();u=t.getServerCache().getNode();var _=n.calcEventCacheAfterServerOverwrite(e,f,u);s=null!=_?this.filter_.updatePriority(f,_):o.getNode()}else{var y=e.popFront(),v=void 0;if(o.isCompleteForChild(d)){u=t.getServerCache().getNode();var g=n.calcEventCacheAfterServerOverwrite(e,o.getNode(),u);v=null!=g?o.getNode().getImmediateChild(d).updateChild(y,g):o.getNode().getImmediateChild(d)}else v=n.calcCompleteChild(d,t.getServerCache());s=null!=v?this.filter_.updateChild(o.getNode(),d,v,y,r,i):o.getNode()}}return t.updateEventSnap(s,o.isFullyInitialized()||e.isEmpty(),this.filter_.filtersNodes())},t.prototype.applyServerOverwrite_=function(t,e,n,r,i,o,s){var a,u=t.getServerCache(),h=o?this.filter_:this.filter_.getIndexedFilter();if(e.isEmpty())a=h.updateFullNode(u.getNode(),n,null);else if(h.filtersNodes()&&!u.isFiltered()){var l=u.getNode().updateChild(e,n);a=h.updateFullNode(u.getNode(),l,null)}else{var c=e.getFront();if(!u.isCompleteForPath(e)&&e.getLength()>1)return t;var p=e.popFront(),d=u.getNode().getImmediateChild(c),f=d.updateChild(p,n);a=".priority"==c?h.updatePriority(u.getNode(),f):h.updateChild(u.getNode(),c,f,p,He,null)}var _=t.updateServerSnap(a,u.isFullyInitialized()||e.isEmpty(),h.filtersNodes()),y=new je(r,_,i);return this.generateEventCacheAfterServerEvent_(_,e,r,y,s)},t.prototype.applyUserOverwrite_=function(t,e,n,r,i,o){var s,a,u=t.getEventCache(),h=new je(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 l=e.getFront();if(".priority"===l)a=this.filter_.updatePriority(t.getEventCache().getNode(),n),s=t.updateEventSnap(a,u.isFullyInitialized(),u.isFiltered());else{var c=e.popFront(),p=u.getNode().getImmediateChild(l),d=void 0;if(c.isEmpty())d=n;else{var f=h.getCompleteChild(l);d=null!=f?".priority"===c.getBack()&&f.getChild(c.parent()).isEmpty()?f:f.updateChild(c,n):ae.EMPTY_NODE}if(p.equals(d))s=t;else{var _=this.filter_.updateChild(u.getNode(),l,d,c,h,o);s=t.updateEventSnap(_,u.isFullyInitialized(),this.filter_.filtersNodes())}}}return s},t.cacheHasChild_=function(t,e){return t.getEventCache().isCompleteForChild(e)},t.prototype.applyUserMerge_=function(e,n,r,i,o,s){var a=this,u=e;return r.foreach((function(r,h){var l=n.child(r);t.cacheHasChild_(e,l.getFront())&&(u=a.applyUserOverwrite_(u,l,h,i,o,s))})),r.foreach((function(r,h){var l=n.child(r);t.cacheHasChild_(e,l.getFront())||(u=a.applyUserOverwrite_(u,l,h,i,o,s))})),u},t.prototype.applyMerge_=function(t,e){return e.foreach((function(e,n){t=t.updateChild(e,n)})),t},t.prototype.applyServerMerge_=function(t,e,n,r,i,o,s){var a=this;if(t.getServerCache().getNode().isEmpty()&&!t.getServerCache().isFullyInitialized())return t;var u,h=t;u=e.isEmpty()?n:Oe.Empty.setTree(e,n);var l=t.getServerCache().getNode();return u.children.inorderTraversal((function(e,n){if(l.hasChild(e)){var u=t.getServerCache().getNode().getImmediateChild(e),c=a.applyMerge_(u,n);h=a.applyServerOverwrite_(h,new K(e),c,r,i,o,s)}})),u.children.inorderTraversal((function(e,n){var u=!t.getServerCache().isCompleteForChild(e)&&null==n.value;if(!l.hasChild(e)&&!u){var c=t.getServerCache().getNode().getImmediateChild(e),p=a.applyMerge_(c,n);h=a.applyServerOverwrite_(h,new K(e),p,r,i,o,s)}})),h},t.prototype.ackUserWrite_=function(t,e,n,r,i,o){if(null!=r.shadowingWrite(e))return t;var s=t.getServerCache().isFiltered(),a=t.getServerCache();if(null!=n.value){if(e.isEmpty()&&a.isFullyInitialized()||a.isCompleteForPath(e))return this.applyServerOverwrite_(t,e,a.getNode().getChild(e),r,i,s,o);if(e.isEmpty()){var u=Oe.Empty;return a.getNode().forEachChild(Lt,(function(t,e){u=u.set(new K(t),e)})),this.applyServerMerge_(t,e,u,r,i,s,o)}return t}var h=Oe.Empty;return n.foreach((function(t,n){var r=e.child(t);a.isCompleteForPath(r)&&(h=h.set(t,a.getNode().getChild(r)))})),this.applyServerMerge_(t,e,h,r,i,s,o)},t.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,He,r)},t.prototype.revertUserWrite_=function(t,e,n,r,i){var o;if(null!=n.shadowingWrite(e))return t;var s=new je(n,t,r),u=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 c=t.getServerCache().getNode();a.assert(c instanceof ae,"serverChildren would be complete if leaf node"),l=n.calcCompleteEventChildren(c)}l=l,h=this.filter_.updateFullNode(u,l,i)}else{var p=e.getFront(),d=n.calcCompleteChild(p,t.getServerCache());null==d&&t.getServerCache().isCompleteForChild(p)&&(d=u.getImmediateChild(p)),h=null!=d?this.filter_.updateChild(u,p,d,e.popFront(),s,i):t.getEventCache().getNode().hasChild(p)?this.filter_.updateChild(u,p,ae.EMPTY_NODE,e.popFront(),s,i):u,h.isEmpty()&&t.getServerCache().isFullyInitialized()&&(o=n.calcCompleteEventCache(t.getCompleteServerSnap()),o.isLeafNode()&&(h=this.filter_.updateFullNode(h,o,i)))}return o=t.getServerCache().isFullyInitialized()||null!=n.shadowingWrite(K.Empty),t.updateEventSnap(h,o,this.filter_.filtersNodes())},t}(),Ke=function(){function t(t){this.query_=t,this.index_=this.query_.getQueryParams().getIndex()}return t.prototype.generateEventsForChanges=function(t,e,n){var r=this,i=[],o=[];return t.forEach((function(t){t.type===Qe.CHILD_CHANGED&&r.index_.indexedValueChanged(t.oldSnap,t.snapshotNode)&&o.push(Qe.childMovedChange(t.childName,t.snapshotNode))})),this.generateEventsForType_(i,Qe.CHILD_REMOVED,t,n,e),this.generateEventsForType_(i,Qe.CHILD_ADDED,t,n,e),this.generateEventsForType_(i,Qe.CHILD_MOVED,o,n,e),this.generateEventsForType_(i,Qe.CHILD_CHANGED,t,n,e),this.generateEventsForType_(i,Qe.VALUE,t,n,e),i},t.prototype.generateEventsForType_=function(t,e,n,r,i){var o=this,s=n.filter((function(t){return t.type===e}));s.sort(this.compareChanges_.bind(this)),s.forEach((function(e){var n=o.materializeSingleChange_(e,i);r.forEach((function(r){r.respondsTo(e.type)&&t.push(r.createEvent(n,o.query_))}))}))},t.prototype.materializeSingleChange_=function(t,e){return"value"===t.type||"child_removed"===t.type?t:(t.prevName=e.getPredecessorChildName(t.childName,t.snapshotNode,this.index_),t)},t.prototype.compareChanges_=function(t,e){if(null==t.childName||null==e.childName)throw a.assertionError("Should only compare child_ events.");var n=new Ot(t.childName,t.snapshotNode),r=new Ot(e.childName,e.snapshotNode);return this.index_.compare(n,r)},t}(),ze=function(){function t(t,e){this.query_=t,this.eventRegistrations_=[];var n=this.query_.getQueryParams(),r=new qe(n.getIndex()),i=n.getNodeFilter();this.processor_=new Ye(i);var o=e.getServerCache(),s=e.getEventCache(),a=r.updateFullNode(ae.EMPTY_NODE,o.getNode(),null),u=i.updateFullNode(ae.EMPTY_NODE,s.getNode(),null),h=new Me(a,o.isFullyInitialized(),r.filtersNodes()),l=new Me(u,s.isFullyInitialized(),i.filtersNodes());this.viewCache_=new We(l,h),this.eventGenerator_=new Ke(this.query_)}return t.prototype.getQuery=function(){return this.query_},t.prototype.getServerCache=function(){return this.viewCache_.getServerCache().getNode()},t.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},t.prototype.isEmpty=function(){return 0===this.eventRegistrations_.length},t.prototype.addEventRegistration=function(t){this.eventRegistrations_.push(t)},t.prototype.removeEventRegistration=function(t,e){var n=[];if(e){a.assert(null==t,"A cancel should cancel all event registrations.");var r=this.query_.path;this.eventRegistrations_.forEach((function(t){e=e;var i=t.createCancelEvent(e,r);i&&n.push(i)}))}if(t){for(var i=[],o=0;o<this.eventRegistrations_.length;++o){var s=this.eventRegistrations_[o];if(s.matches(t)){if(t.hasAnyCallback()){i=i.concat(this.eventRegistrations_.slice(o+1));break}}else i.push(s)}this.eventRegistrations_=i}else this.eventRegistrations_=[];return n},t.prototype.applyOperation=function(t,e,n){t.type===de.MERGE&&null!==t.source.queryId&&(a.assert(this.viewCache_.getCompleteServerSnap(),"We should always have a full cache before handling merges"),a.assert(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),a.assert(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)},t.prototype.getInitialEvents=function(t){var e=this.viewCache_.getEventCache(),n=[];if(!e.getNode().isLeafNode()){var r=e.getNode();r.forEachChild(Gt,(function(t,e){n.push(Qe.childAddedChange(t,e))}))}return e.isFullyInitialized()&&n.push(Qe.valueChange(e.getNode())),this.generateEventsForChanges_(n,e.getNode(),t)},t.prototype.generateEventsForChanges_=function(t,e,n){var r=n?[n]:this.eventRegistrations_;return this.eventGenerator_.generateEventsForChanges(t,e,r)},t}(),Ge=function(){function t(){this.views=new Map}return Object.defineProperty(t,"__referenceConstructor",{get:function(){return a.assert(Re,"Reference.ts has not been loaded"),Re},set:function(t){a.assert(!Re,"__referenceConstructor has already been defined"),Re=t},enumerable:!0,configurable:!0}),t.prototype.isEmpty=function(){return 0===this.views.size},t.prototype.applyOperation=function(t,e,n){var r,i,o=t.source.queryId;if(null!==o){var u=this.views.get(o);return a.assert(null!=u,"SyncTree gave us an op for an invalid query."),u.applyOperation(t,e,n)}var h=[];try{for(var l=s.__values(this.views.values()),c=l.next();!c.done;c=l.next()){u=c.value;h=h.concat(u.applyOperation(t,e,n))}}catch(p){r={error:p}}finally{try{c&&!c.done&&(i=l.return)&&i.call(l)}finally{if(r)throw r.error}}return h},t.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),u=!1;a?u=!0:r instanceof ae?(a=n.calcCompleteEventChildren(r),u=!1):(a=ae.EMPTY_NODE,u=!1);var h=new We(new Me(a,u,!1),new Me(r,i,!1));s=new ze(t,h),this.views.set(o,s)}return s.addEventRegistration(e),s.getInitialEvents(e)},t.prototype.removeEventRegistration=function(e,n,r){var i,o,a=e.queryIdentifier(),u=[],h=[],l=this.hasCompleteView();if("default"===a)try{for(var c=s.__values(this.views.entries()),p=c.next();!p.done;p=c.next()){var d=s.__read(p.value,2),f=d[0],_=d[1];h=h.concat(_.removeEventRegistration(n,r)),_.isEmpty()&&(this.views.delete(f),_.getQuery().getQueryParams().loadsAllData()||u.push(_.getQuery()))}}catch(y){i={error:y}}finally{try{p&&!p.done&&(o=c.return)&&o.call(c)}finally{if(i)throw i.error}}else{_=this.views.get(a);_&&(h=h.concat(_.removeEventRegistration(n,r)),_.isEmpty()&&(this.views.delete(a),_.getQuery().getQueryParams().loadsAllData()||u.push(_.getQuery())))}return l&&!this.hasCompleteView()&&u.push(new t.__referenceConstructor(e.repo,e.path)),{removed:u,events:h}},t.prototype.getQueryViews=function(){var t,e,n=[];try{for(var r=s.__values(this.views.values()),i=r.next();!i.done;i=r.next()){var o=i.value;o.getQuery().getQueryParams().loadsAllData()||n.push(o)}}catch(a){t={error:a}}finally{try{i&&!i.done&&(e=r.return)&&e.call(r)}finally{if(t)throw t.error}}return n},t.prototype.getCompleteServerCache=function(t){var e,n,r=null;try{for(var i=s.__values(this.views.values()),o=i.next();!o.done;o=i.next()){var a=o.value;r=r||a.getCompleteServerCache(t)}}catch(u){e={error:u}}finally{try{o&&!o.done&&(n=i.return)&&n.call(i)}finally{if(e)throw e.error}}return r},t.prototype.viewForQuery=function(t){var e=t.getQueryParams();if(e.loadsAllData())return this.getCompleteView();var n=t.queryIdentifier();return this.views.get(n)},t.prototype.viewExistsForQuery=function(t){return null!=this.viewForQuery(t)},t.prototype.hasCompleteView=function(){return null!=this.getCompleteView()},t.prototype.getCompleteView=function(){var t,e;try{for(var n=s.__values(this.views.values()),r=n.next();!r.done;r=n.next()){var i=r.value;if(i.getQuery().getQueryParams().loadsAllData())return i}}catch(o){t={error:o}}finally{try{r&&!r.done&&(e=n.return)&&e.call(n)}finally{if(t)throw t.error}}return null},t}(),Xe=function(){function t(t){this.writeTree_=t}return t.prototype.addWrite=function(e,n){if(e.isEmpty())return new t(new Oe(n));var r=this.writeTree_.findRootMostValueAndPath(e);if(null!=r){var i=r.path,o=r.value,s=K.relativePath(i,e);return o=o.updateChild(s,n),new t(this.writeTree_.set(i,o))}var a=new Oe(n),u=this.writeTree_.setTree(e,a);return new t(u)},t.prototype.addWrites=function(t,e){var n=this;return M(e,(function(e,r){n=n.addWrite(t.child(e),r)})),n},t.prototype.removeWrite=function(e){if(e.isEmpty())return t.Empty;var n=this.writeTree_.setTree(e,Oe.Empty);return new t(n)},t.prototype.hasCompleteWrite=function(t){return null!=this.getCompleteNode(t)},t.prototype.getCompleteNode=function(t){var e=this.writeTree_.findRootMostValueAndPath(t);return null!=e?this.writeTree_.get(e.path).getChild(K.relativePath(e.path,t)):null},t.prototype.getCompleteChildren=function(){var t=[],e=this.writeTree_.value;return null!=e?e.isLeafNode()||e.forEachChild(Gt,(function(e,n){t.push(new Ot(e,n))})):this.writeTree_.children.inorderTraversal((function(e,n){null!=n.value&&t.push(new Ot(e,n.value))})),t},t.prototype.childCompoundWrite=function(e){if(e.isEmpty())return this;var n=this.getCompleteNode(e);return new t(null!=n?new Oe(n):this.writeTree_.subtree(e))},t.prototype.isEmpty=function(){return this.writeTree_.isEmpty()},t.prototype.apply=function(t){return $e(K.Empty,this.writeTree_,t)},t.Empty=new t(new Oe(null)),t}();
/**
 * @license
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */function $e(t,e,n){if(null!=e.value)return n.updateChild(t,e.value);var r=null;return e.children.inorderTraversal((function(e,i){".priority"===e?(a.assert(null!==i.value,"Priority writes must always be leaf nodes"),r=i.value):n=$e(t.child(e),i,n)})),n.getChild(t).isEmpty()||null===r||(n=n.updateChild(t.child(".priority"),r)),n}
/**
 * @license
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */var Je=function(){function t(){this.visibleWrites_=Xe.Empty,this.allWrites_=[],this.lastWriteId_=-1}return t.prototype.childWrites=function(t){return new Ze(t,this)},t.prototype.addOverwrite=function(t,e,n,r){a.assert(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},t.prototype.addMerge=function(t,e,n){a.assert(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},t.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},t.prototype.removeWrite=function(t){var e=this,n=this.allWrites_.findIndex((function(e){return e.writeId===t}));a.assert(n>=0,"removeWrite called with nonexistent writeId.");var r=this.allWrites_[n];this.allWrites_.splice(n,1);var i=r.visible,o=!1,s=this.allWrites_.length-1;while(i&&s>=0){var u=this.allWrites_[s];u.visible&&(s>=n&&this.recordContainsPath_(u,r.path)?i=!1:r.path.contains(u.path)&&(o=!0)),s--}if(i){if(o)return this.resetTree_(),!0;if(r.snap)this.visibleWrites_=this.visibleWrites_.removeWrite(r.path);else{var h=r.children;M(h,(function(t){e.visibleWrites_=e.visibleWrites_.removeWrite(r.path.child(t))}))}return!0}return!1},t.prototype.getCompleteWriteData=function(t){return this.visibleWrites_.getCompleteNode(t)},t.prototype.calcCompleteEventCache=function(e,n,r,i){if(r||i){var o=this.visibleWrites_.childCompoundWrite(e);if(!i&&o.isEmpty())return n;if(i||null!=n||o.hasCompleteWrite(K.Empty)){var s=function(t){return(t.visible||i)&&(!r||!~r.indexOf(t.writeId))&&(t.path.contains(e)||e.contains(t.path))},a=t.layerTree_(this.allWrites_,s,e);l=n||ae.EMPTY_NODE;return a.apply(l)}return null}var u=this.visibleWrites_.getCompleteNode(e);if(null!=u)return u;var h=this.visibleWrites_.childCompoundWrite(e);if(h.isEmpty())return n;if(null!=n||h.hasCompleteWrite(K.Empty)){var l=n||ae.EMPTY_NODE;return h.apply(l)}return null},t.prototype.calcCompleteEventChildren=function(t,e){var n=ae.EMPTY_NODE,r=this.visibleWrites_.getCompleteNode(t);if(r)return r.isLeafNode()||r.forEachChild(Gt,(function(t,e){n=n.updateImmediateChild(t,e)})),n;if(e){var i=this.visibleWrites_.childCompoundWrite(t);return e.forEachChild(Gt,(function(t,e){var r=i.childCompoundWrite(new K(t)).apply(e);n=n.updateImmediateChild(t,r)})),i.getCompleteChildren().forEach((function(t){n=n.updateImmediateChild(t.name,t.node)})),n}var o=this.visibleWrites_.childCompoundWrite(t);return o.getCompleteChildren().forEach((function(t){n=n.updateImmediateChild(t.name,t.node)})),n},t.prototype.calcEventCacheAfterServerOverwrite=function(t,e,n,r){a.assert(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))},t.prototype.calcCompleteChild=function(t,e,n){var r=t.child(e),i=this.visibleWrites_.getCompleteNode(r);if(null!=i)return i;if(n.isCompleteForChild(e)){var o=this.visibleWrites_.childCompoundWrite(r);return o.apply(n.getNode().getImmediateChild(e))}return null},t.prototype.shadowingWrite=function(t){return this.visibleWrites_.getCompleteNode(t)},t.prototype.calcIndexedSlice=function(t,e,n,r,i,o){var s,a=this.visibleWrites_.childCompoundWrite(t),u=a.getCompleteNode(K.Empty);if(null!=u)s=u;else{if(null==e)return[];s=a.apply(e)}if(s=s.withIndex(o),s.isEmpty()||s.isLeafNode())return[];var h=[],l=o.getCompare(),c=i?s.getReverseIteratorFrom(n,o):s.getIteratorFrom(n,o),p=c.getNext();while(p&&h.length<r)0!==l(p,n)&&h.push(p),p=c.getNext();return h},t.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},t.prototype.resetTree_=function(){this.visibleWrites_=t.layerTree_(this.allWrites_,t.DefaultFilter_,K.Empty),this.allWrites_.length>0?this.lastWriteId_=this.allWrites_[this.allWrites_.length-1].writeId:this.lastWriteId_=-1},t.DefaultFilter_=function(t){return t.visible},t.layerTree_=function(t,e,n){for(var r=Xe.Empty,i=0;i<t.length;++i){var o=t[i];if(e(o)){var s=o.path,u=void 0;if(o.snap)n.contains(s)?(u=K.relativePath(n,s),r=r.addWrite(u,o.snap)):s.contains(n)&&(u=K.relativePath(s,n),r=r.addWrite(K.Empty,o.snap.getChild(u)));else{if(!o.children)throw a.assertionError("WriteRecord should have .snap or .children");if(n.contains(s))u=K.relativePath(n,s),r=r.addWrites(u,o.children);else if(s.contains(n))if(u=K.relativePath(s,n),u.isEmpty())r=r.addWrites(K.Empty,o.children);else{var h=a.safeGet(o.children,u.getFront());if(h){var l=h.getChild(u.popFront());r=r.addWrite(K.Empty,l)}}}}}return r},t}(),Ze=function(){function t(t,e){this.treePath_=t,this.writeTree_=e}return t.prototype.calcCompleteEventCache=function(t,e,n){return this.writeTree_.calcCompleteEventCache(this.treePath_,t,e,n)},t.prototype.calcCompleteEventChildren=function(t){return this.writeTree_.calcCompleteEventChildren(this.treePath_,t)},t.prototype.calcEventCacheAfterServerOverwrite=function(t,e,n){return this.writeTree_.calcEventCacheAfterServerOverwrite(this.treePath_,t,e,n)},t.prototype.shadowingWrite=function(t){return this.writeTree_.shadowingWrite(this.treePath_.child(t))},t.prototype.calcIndexedSlice=function(t,e,n,r,i){return this.writeTree_.calcIndexedSlice(this.treePath_,t,e,n,r,i)},t.prototype.calcCompleteChild=function(t,e){return this.writeTree_.calcCompleteChild(this.treePath_,t,e)},t.prototype.child=function(e){return new t(this.treePath_.child(e),this.writeTree_)},t}(),tn=function(){function t(t){this.listenProvider_=t,this.syncPointTree_=Oe.Empty,this.pendingWriteTree_=new Je,this.tagToQueryMap=new Map,this.queryToTagMap=new Map}return t.prototype.applyUserOverwrite=function(t,e,n,r){return this.pendingWriteTree_.addOverwrite(t,e,n,r),r?this.applyOperationToSyncPoints_(new Fe(De.User,t,e)):[]},t.prototype.applyUserMerge=function(t,e,n){this.pendingWriteTree_.addMerge(t,e,n);var r=Oe.fromObject(e);return this.applyOperationToSyncPoints_(new Le(De.User,t,r))},t.prototype.ackUserWrite=function(t,e){void 0===e&&(e=!1);var n=this.pendingWriteTree_.getWrite(t),r=this.pendingWriteTree_.removeWrite(t);if(r){var i=Oe.Empty;return null!=n.snap?i=i.set(K.Empty,!0):M(n.children,(function(t,e){i=i.set(new K(t),e)})),this.applyOperationToSyncPoints_(new xe(n.path,i,e))}return[]},t.prototype.applyServerOverwrite=function(t,e){return this.applyOperationToSyncPoints_(new Fe(De.Server,t,e))},t.prototype.applyServerMerge=function(t,e){var n=Oe.fromObject(e);return this.applyOperationToSyncPoints_(new Le(De.Server,t,n))},t.prototype.applyListenComplete=function(t){return this.applyOperationToSyncPoints_(new Ae(De.Server,t))},t.prototype.applyTaggedQueryOverwrite=function(e,n,r){var i=this.queryKeyForTag_(r);if(null!=i){var o=t.parseQueryKey_(i),s=o.path,a=o.queryId,u=K.relativePath(s,e),h=new Fe(De.forServerTaggedQuery(a),u,n);return this.applyTaggedOperation_(s,h)}return[]},t.prototype.applyTaggedQueryMerge=function(e,n,r){var i=this.queryKeyForTag_(r);if(i){var o=t.parseQueryKey_(i),s=o.path,a=o.queryId,u=K.relativePath(s,e),h=Oe.fromObject(n),l=new Le(De.forServerTaggedQuery(a),u,h);return this.applyTaggedOperation_(s,l)}return[]},t.prototype.applyTaggedListenComplete=function(e,n){var r=this.queryKeyForTag_(n);if(r){var i=t.parseQueryKey_(r),o=i.path,s=i.queryId,a=K.relativePath(o,e),u=new Ae(De.forServerTaggedQuery(s),a);return this.applyTaggedOperation_(o,u)}return[]},t.prototype.addEventRegistration=function(e,n){var r=e.path,i=null,o=!1;this.syncPointTree_.foreachOnPath(r,(function(t,e){var n=K.relativePath(t,r);i=i||e.getCompleteServerCache(n),o=o||e.hasCompleteView()}));var s,u=this.syncPointTree_.get(r);if(u?(o=o||u.hasCompleteView(),i=i||u.getCompleteServerCache(K.Empty)):(u=new Ge,this.syncPointTree_=this.syncPointTree_.set(r,u)),null!=i)s=!0;else{s=!1,i=ae.EMPTY_NODE;var h=this.syncPointTree_.subtree(r);h.foreachChild((function(t,e){var n=e.getCompleteServerCache(K.Empty);n&&(i=i.updateImmediateChild(t,n))}))}var l=u.viewExistsForQuery(e);if(!l&&!e.getQueryParams().loadsAllData()){var c=t.makeQueryKey_(e);a.assert(!this.queryToTagMap.has(c),"View does not exist, but we have a tag");var p=t.getNextQueryTag_();this.queryToTagMap.set(c,p),this.tagToQueryMap.set(p,c)}var d=this.pendingWriteTree_.childWrites(r),f=u.addEventRegistration(e,n,d,i,s);if(!l&&!o){var _=u.viewForQuery(e);f=f.concat(this.setupListener_(e,_))}return f},t.prototype.removeEventRegistration=function(e,n,r){var i=this,o=e.path,s=this.syncPointTree_.get(o),a=[];if(s&&("default"===e.queryIdentifier()||s.viewExistsForQuery(e))){var u=s.removeEventRegistration(e,n,r);s.isEmpty()&&(this.syncPointTree_=this.syncPointTree_.remove(o));var h=u.removed;a=u.events;var l=-1!==h.findIndex((function(t){return t.getQueryParams().loadsAllData()})),c=this.syncPointTree_.findOnPath(o,(function(t,e){return e.hasCompleteView()}));if(l&&!c){var p=this.syncPointTree_.subtree(o);if(!p.isEmpty())for(var d=this.collectDistinctViewsForSubTree_(p),f=0;f<d.length;++f){var _=d[f],y=_.getQuery(),v=this.createListenerForView_(_);this.listenProvider_.startListening(t.queryForListening_(y),this.tagForQuery_(y),v.hashFn,v.onComplete)}}if(!c&&h.length>0&&!r)if(l){var g=null;this.listenProvider_.stopListening(t.queryForListening_(e),g)}else h.forEach((function(e){var n=i.queryToTagMap.get(t.makeQueryKey_(e));i.listenProvider_.stopListening(t.queryForListening_(e),n)}));this.removeTags_(h)}return a},t.prototype.calcCompleteEventCache=function(t,e){var n=!0,r=this.pendingWriteTree_,i=this.syncPointTree_.findOnPath(t,(function(e,n){var r=K.relativePath(e,t),i=n.getCompleteServerCache(r);if(i)return i}));return r.calcCompleteEventCache(t,i,e,n)},t.prototype.collectDistinctViewsForSubTree_=function(t){return t.fold((function(t,e,n){if(e&&e.hasCompleteView()){var r=e.getCompleteView();return[r]}var i=[];return e&&(i=e.getQueryViews()),M(n,(function(t,e){i=i.concat(e)})),i}))},t.prototype.removeTags_=function(e){for(var n=0;n<e.length;++n){var r=e[n];if(!r.getQueryParams().loadsAllData()){var i=t.makeQueryKey_(r),o=this.queryToTagMap.get(i);this.queryToTagMap.delete(i),this.tagToQueryMap.delete(o)}}},t.queryForListening_=function(t){return t.getQueryParams().loadsAllData()&&!t.getQueryParams().isDefault()?t.getRef():t},t.prototype.setupListener_=function(e,n){var r=e.path,i=this.tagForQuery_(e),o=this.createListenerForView_(n),s=this.listenProvider_.startListening(t.queryForListening_(e),i,o.hashFn,o.onComplete),u=this.syncPointTree_.subtree(r);if(i)a.assert(!u.value.hasCompleteView(),"If we're adding a query, it shouldn't be shadowed");else for(var h=u.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()})))),M(n,(function(t,e){r=r.concat(e)})),r})),l=0;l<h.length;++l){var c=h[l];this.listenProvider_.stopListening(t.queryForListening_(c),this.tagForQuery_(c))}return s},t.prototype.createListenerForView_=function(t){var e=this,n=t.getQuery(),r=this.tagForQuery_(n);return{hashFn:function(){var e=t.getServerCache()||ae.EMPTY_NODE;return e.hash()},onComplete:function(t){if("ok"===t)return r?e.applyTaggedListenComplete(n.path,r):e.applyListenComplete(n.path);var i=U(t,n);return e.removeEventRegistration(n,null,i)}}},t.makeQueryKey_=function(t){return t.path.toString()+"$"+t.queryIdentifier()},t.parseQueryKey_=function(t){var e=t.indexOf("$");return a.assert(-1!==e&&e<t.length-1,"Bad queryKey."),{queryId:t.substr(e+1),path:new K(t.substr(0,e))}},t.prototype.queryKeyForTag_=function(t){return this.tagToQueryMap.get(t)},t.prototype.tagForQuery_=function(e){var n=t.makeQueryKey_(e);return this.queryToTagMap.get(n)},t.getNextQueryTag_=function(){return t.nextQueryTag_++},t.prototype.applyTaggedOperation_=function(t,e){var n=this.syncPointTree_.get(t);a.assert(n,"Missing sync point for query tag that we're tracking");var r=this.pendingWriteTree_.childWrites(t);return n.applyOperation(e,r,null)},t.prototype.applyOperationToSyncPoints_=function(t){return this.applyOperationHelper_(t,this.syncPointTree_,null,this.pendingWriteTree_.childWrites(K.Empty))},t.prototype.applyOperationHelper_=function(t,e,n,r){if(t.path.isEmpty())return this.applyOperationDescendantsHelper_(t,e,n,r);var i=e.get(K.Empty);null==n&&null!=i&&(n=i.getCompleteServerCache(K.Empty));var o=[],s=t.path.getFront(),a=t.operationForChild(s),u=e.children.get(s);if(u&&a){var h=n?n.getImmediateChild(s):null,l=r.child(s);o=o.concat(this.applyOperationHelper_(a,u,h,l))}return i&&(o=o.concat(i.applyOperation(t,r,n))),o},t.prototype.applyOperationDescendantsHelper_=function(t,e,n,r){var i=this,o=e.get(K.Empty);null==n&&null!=o&&(n=o.getCompleteServerCache(K.Empty));var s=[];return e.children.inorderTraversal((function(e,o){var a=n?n.getImmediateChild(e):null,u=r.child(e),h=t.operationForChild(e);h&&(s=s.concat(i.applyOperationDescendantsHelper_(h,o,a,u)))})),o&&(s=s.concat(o.applyOperation(t,r,n))),s},t.nextQueryTag_=1,t}(),en=function(){function t(){this.rootNode_=ae.EMPTY_NODE}return t.prototype.getNode=function(t){return this.rootNode_.getChild(t)},t.prototype.updateSnapshot=function(t,e){this.rootNode_=this.rootNode_.updateChild(t,e)},t}(),nn=function(){function t(t){this.app_=t}return t.prototype.getToken=function(t){return this.app_["INTERNAL"]["getToken"](t).then(null,(function(t){return t&&"auth/token-not-initialized"===t.code?(w("Got auth/token-not-initialized error.  Treating as null token."),null):Promise.reject(t)}))},t.prototype.addTokenChangeListener=function(t){this.app_["INTERNAL"]["addAuthTokenListener"](t)},t.prototype.removeTokenChangeListener=function(t){this.app_["INTERNAL"]["removeAuthTokenListener"](t)},t.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/.',N(t)},t}(),rn=function(){function t(t){this.accessToken=t}return t}(),on=function(){function t(t){this.app_=t}return t.prototype.getToken=function(t){return Promise.resolve(new rn("owner"))},t.prototype.addTokenChangeListener=function(t){},t.prototype.removeTokenChangeListener=function(t){},t.prototype.notifyForInvalidToken=function(){var t='Database emulator unexpectedly rejected fake "owner" credentials.';N(t)},t}(),sn=function(){function t(){this.counters_={}}return t.prototype.incrementCounter=function(t,e){void 0===e&&(e=1),a.contains(this.counters_,t)||(this.counters_[t]=0),this.counters_[t]+=e},t.prototype.get=function(){return a.deepCopy(this.counters_)},t}(),an=function(){function t(){}return t.getCollection=function(t){var e=t.toString();return this.collections_[e]||(this.collections_[e]=new sn),this.collections_[e]},t.getOrCreateReporter=function(t,e){var n=t.toString();return this.reporters_[n]||(this.reporters_[n]=e()),this.reporters_[n]},t.collections_={},t.reporters_={},t}(),un=function(){function t(t){this.collection_=t,this.last_=null}return t.prototype.get=function(){var t=this.collection_.get(),e=s.__assign({},t);return this.last_&&M(this.last_,(function(t,n){e[t]=e[t]-n})),this.last_=t,e},t}(),hn=1e4,ln=3e4,cn=3e5,pn=function(){function t(t,e){this.server_=e,this.statsToReport_={},this.statsListener_=new un(t);var n=hn+(ln-hn)*Math.random();Y(this.reportStats_.bind(this),Math.floor(n))}return t.prototype.includeStat=function(t){this.statsToReport_[t]=!0},t.prototype.reportStats_=function(){var t=this,e=this.statsListener_.get(),n={},r=!1;M(e,(function(e,i){i>0&&a.contains(t.statsToReport_,e)&&(n[e]=i,r=!0)})),r&&this.server_.reportStats(n),Y(this.reportStats_.bind(this),Math.floor(2*Math.random()*cn))},t}(),dn=function(){function t(){this.eventLists_=[],this.recursionDepth_=0}return t.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 fn(i)),e.add(r)}e&&this.eventLists_.push(e)},t.prototype.raiseEventsAtPath=function(t,e){this.queueEvents(e),this.raiseQueuedEventsMatchingPredicate_((function(e){return e.equals(t)}))},t.prototype.raiseEventsForChangedPath=function(t,e){this.queueEvents(e),this.raiseQueuedEventsMatchingPredicate_((function(e){return e.contains(t)||t.contains(e)}))},t.prototype.raiseQueuedEventsMatchingPredicate_=function(t){this.recursionDepth_++;for(var e=!0,n=0;n<this.eventLists_.length;n++){var r=this.eventLists_[n];if(r){var i=r.getPath();t(i)?(this.eventLists_[n].raise(),this.eventLists_[n]=null):e=!1}}e&&(this.eventLists_=[]),this.recursionDepth_--},t}(),fn=function(){function t(t){this.path_=t,this.events_=[]}return t.prototype.add=function(t){this.events_.push(t)},t.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();m&&w("event: "+e.toString()),j(n)}}},t.prototype.getPath=function(){return this.path_},t}(),_n=function(){function t(t){this.allowedEvents_=t,this.listeners_={},a.assert(Array.isArray(t)&&t.length>0,"Requires a non-empty array")}return t.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=s.__spread(this.listeners_[t]),i=0;i<r.length;i++)r[i].callback.apply(r[i].context,e)},t.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)},t.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)},t.prototype.validateEventType_=function(t){a.assert(this.allowedEvents_.find((function(e){return e===t})),"Unknown event: "+t)},t}(),yn=function(t){function e(){var e,n,r=t.call(this,["visible"])||this;return"undefined"!==typeof document&&"undefined"!==typeof document.addEventListener&&("undefined"!==typeof document["hidden"]?(n="visibilitychange",e="hidden"):"undefined"!==typeof document["mozHidden"]?(n="mozvisibilitychange",e="mozHidden"):"undefined"!==typeof document["msHidden"]?(n="msvisibilitychange",e="msHidden"):"undefined"!==typeof document["webkitHidden"]&&(n="webkitvisibilitychange",e="webkitHidden")),r.visible_=!0,n&&document.addEventListener(n,(function(){var t=!document[e];t!==r.visible_&&(r.visible_=t,r.trigger("visible",t))}),!1),r}return s.__extends(e,t),e.getInstance=function(){return new e},e.prototype.getInitialEvent=function(t){return a.assert("visible"===t,"Unknown event type: "+t),[this.visible_]},e}(_n),vn=function(t){function e(){var e=t.call(this,["online"])||this;return e.online_=!0,"undefined"===typeof window||"undefined"===typeof window.addEventListener||a.isMobileCordova()||(window.addEventListener("online",(function(){e.online_||(e.online_=!0,e.trigger("online",!0))}),!1),window.addEventListener("offline",(function(){e.online_&&(e.online_=!1,e.trigger("online",!1))}),!1)),e}return s.__extends(e,t),e.getInstance=function(){return new e},e.prototype.getInitialEvent=function(t){return a.assert("online"===t,"Unknown 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o=r();if("break"===o)break}},t}(),mn="start",Cn="close",En="pLPCommand",wn="pRTLPCB",bn="id",Tn="pw",Sn="ser",Nn="cb",In="seg",Pn="ts",Rn="d",Dn="dframe",xn=1870,kn=30,On=xn-kn,An=25e3,Fn=3e4,Ln=function(){function t(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_=b(t),this.stats_=an.getCollection(e),this.urlFn=function(t){return e.connectionURL(rt,t)}}return t.prototype.open=function(t,e){var n=this;this.curSegmentNum=0,this.onDisconnect_=e,this.myPacketOrderer=new gn(t),this.isClosed_=!1,this.connectTimeoutTimer_=setTimeout((function(){n.log_("Timed out trying to connect."),n.onClosed_(),n.connectTimeoutTimer_=null}),Math.floor(Fn)),R((function(){if(!n.isClosed_){n.scriptTagHolder=new Mn((function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];var 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via long-poll to "+e),n.scriptTagHolder.addTag(e,(function(){}))}}))},t.prototype.start=function(){this.scriptTagHolder.startLongPoll(this.id,this.password),this.addDisconnectPingFrame(this.id,this.password)},t.forceAllow=function(){t.forceAllow_=!0},t.forceDisallow=function(){t.forceDisallow_=!0},t.isAvailable=function(){return!a.isNodeSdk()&&(!!t.forceAllow_||!t.forceDisallow_&&"undefined"!==typeof document&&null!=document.createElement&&!Q()&&!q())},t.prototype.markConnectionHealthy=function(){},t.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)},t.prototype.onClosed_=function(){this.isClosed_||(this.log_("Longpoll is closing itself"),this.shutdown_(),this.onDisconnect_&&(this.onDisconnect_(this.everConnected_),this.onDisconnect_=null))},t.prototype.close=function(){this.isClosed_||(this.log_("Longpoll is being closed."),this.shutdown_())},t.prototype.send=function(t){var e=a.stringify(t);this.bytesSent+=e.length,this.stats_.incrementCounter("bytes_sent",e.length);for(var n=a.base64Encode(e),r=L(n,On),i=0;i<r.length;i++)this.scriptTagHolder.enqueueSegment(this.curSegmentNum,r.length,r[i]),this.curSegmentNum++},t.prototype.addDisconnectPingFrame=function(t,e){if(!a.isNodeSdk()){this.myDisconnFrame=document.createElement("iframe");var n={};n[Dn]="t",n[bn]=t,n[Tn]=e,this.myDisconnFrame.src=this.urlFn(n),this.myDisconnFrame.style.display="none",document.body.appendChild(this.myDisconnFrame)}},t.prototype.incrementIncomingBytes_=function(t){var e=a.stringify(t).length;this.bytesReceived+=e,this.stats_.incrementCounter("bytes_received",e)},t}(),Mn=function(){function t(e,n,r,i){if(this.onDisconnect=r,this.urlFn=i,this.outstandingRequests=new Set,this.pendingSegs=[],this.currentSerial=Math.floor(1e8*Math.random()),this.sendNewPolls=!0,a.isNodeSdk())this.commandCB=e,this.onMessageCB=n;else{this.uniqueCallbackIdentifier=y(),window[En+this.uniqueCallbackIdentifier]=e,window[wn+this.uniqueCallbackIdentifier]=n,this.myIFrame=t.createIFrame_();var o="";if(this.myIFrame.src&&"javascript:"===this.myIFrame.src.substr(0,"javascript:".length)){var s=document.domain;o='<script>document.domain="'+s+'";<\/script>'}var u="<html><body>"+o+"</body></html>";try{this.myIFrame.doc.open(),this.myIFrame.doc.write(u),this.myIFrame.doc.close()}catch(h){w("frame writing exception"),h.stack&&w(h.stack),w(h)}}}return t.createIFrame_=function(){var t=document.createElement("iframe");if(t.style.display="none",!document.body)throw"Document body has not initialized. Wait to initialize Firebase until after the document is ready.";document.body.appendChild(t);try{var e=t.contentWindow.document;e||w("No IE domain setting required")}catch(r){var n=document.domain;t.src="javascript:void((function(){document.open();document.domain='"+n+"';document.close();})())"}return t.contentDocument?t.doc=t.contentDocument:t.contentWindow?t.doc=t.contentWindow.document:t.document&&(t.doc=t.document),t},t.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())},t.prototype.startLongPoll=function(t,e){this.myID=t,this.myPW=e,this.alive=!0;while(this.newRequest_());},t.prototype.newRequest_=function(){if(this.alive&&this.sendNewPolls&&this.outstandingRequests.size<(this.pendingSegs.length>0?2:1)){this.currentSerial++;var t={};t[bn]=this.myID,t[Tn]=this.myPW,t[Sn]=this.currentSerial;var e=this.urlFn(t),n="",r=0;while(this.pendingSegs.length>0){var i=this.pendingSegs[0];if(!(i.d.length+kn+n.length<=xn))break;var o=this.pendingSegs.shift();n=n+"&"+In+r+"="+o.seg+"&"+Pn+r+"="+o.ts+"&"+Rn+r+"="+o.d,r++}return e+=n,this.addLongPollTag_(e,this.currentSerial),!0}return!1},t.prototype.enqueueSegment=function(t,e,n){this.pendingSegs.push({seg:t,ts:e,d:n}),this.alive&&this.newRequest_()},t.prototype.addLongPollTag_=function(t,e){var n=this;this.outstandingRequests.add(e);var r=function(){n.outstandingRequests.delete(e),n.newRequest_()},i=setTimeout(r,Math.floor(An)),o=function(){clearTimeout(i),r()};this.addTag(t,o)},t.prototype.addTag=function(t,e){var n=this;a.isNodeSdk()?this.doNodeLongPoll(t,e):setTimeout((function(){try{if(!n.sendNewPolls)return;var r=n.myIFrame.doc.createElement("script");r.type="text/javascript",r.async=!0,r.src=t,r.onload=r.onreadystatechange=function(){var t=r.readyState;t&&"loaded"!==t&&"complete"!==t||(r.onload=r.onreadystatechange=null,r.parentNode&&r.parentNode.removeChild(r),e())},r.onerror=function(){w("Long-poll script failed to load: "+t),n.sendNewPolls=!1,n.close()},n.myIFrame.doc.body.appendChild(r)}catch(i){}}),Math.floor(1))},t}(),Wn="";function Qn(t){Wn=t}
/**
 * @license
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */var qn=16384,Un=45e3,Vn=null;"undefined"!==typeof MozWebSocket?Vn=MozWebSocket:"undefined"!==typeof WebSocket&&(Vn=WebSocket);var Hn=function(){function t(e,n,r,i){this.connId=e,this.keepaliveTimer=null,this.frames=null,this.totalFrames=0,this.bytesSent=0,this.bytesReceived=0,this.log_=b(this.connId),this.stats_=an.getCollection(n),this.connURL=t.connectionURL_(n,r,i)}return t.connectionURL_=function(t,e,n){var r={};return r[X]=G,!a.isNodeSdk()&&"undefined"!==typeof location&&location.href&&-1!==location.href.indexOf(tt)&&(r[J]=Z),e&&(r[$]=e),n&&(r[et]=n),t.connectionURL(nt,r)},t.prototype.open=function(t,e){var n=this;this.onDisconnect=e,this.onMessage=t,this.log_("Websocket connecting to "+this.connURL),this.everConnected_=!1,p.set("previous_websocket_failure",!0);try{if(a.isNodeSdk()){var i=a.CONSTANTS.NODE_ADMIN?"AdminNode":"Node",o={headers:{"User-Agent":"Firebase/"+G+"/"+Wn+"/"+r.platform+"/"+i}},s=Object({NODE_ENV:"production",VUE_APP_NEWS_URL:"https://littlealchemy2.com/public/news/v1/w",VUE_APP_ENCYCLOPEDIA_ORIGIN:"https://littlealchemy2.com",BASE_URL:"/"}),u=0==this.connURL.indexOf("wss://")?s["HTTPS_PROXY"]||s["https_proxy"]:s["HTTP_PROXY"]||s["http_proxy"];u&&(o["proxy"]={origin:u}),this.mySock=new Vn(this.connURL,[],o)}else this.mySock=new Vn(this.connURL)}catch(l){this.log_("Error instantiating WebSocket.");var h=l.message||l.data;return h&&this.log_(h),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_()}},t.prototype.start=function(){},t.forceDisallow=function(){t.forceDisallow_=!0},t.isAvailable=function(){var e=!1;if("undefined"!==typeof navigator&&navigator.userAgent){var n=/Android ([0-9]{0,}\.[0-9]{0,})/,r=navigator.userAgent.match(n);r&&r.length>1&&parseFloat(r[1])<4.4&&(e=!0)}return!e&&null!==Vn&&!t.forceDisallow_},t.previouslyFailed=function(){return p.isInMemoryStorage||!0===p.get("previous_websocket_failure")},t.prototype.markConnectionHealthy=function(){p.remove("previous_websocket_failure")},t.prototype.appendFrame_=function(t){if(this.frames.push(t),this.frames.length==this.totalFrames){var e=this.frames.join("");this.frames=null;var n=a.jsonEval(e);this.onMessage(n)}},t.prototype.handleNewFrameCount_=function(t){this.totalFrames=t,this.frames=[]},t.prototype.extractFrameCount_=function(t){if(a.assert(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},t.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)}}},t.prototype.send=function(t){this.resetKeepAlive();var e=a.stringify(t);this.bytesSent+=e.length,this.stats_.incrementCounter("bytes_sent",e.length);var n=L(e,qn);n.length>1&&this.sendString_(String(n.length));for(var r=0;r<n.length;r++)this.sendString_(n[r])},t.prototype.shutdown_=function(){this.isClosed_=!0,this.keepaliveTimer&&(clearInterval(this.keepaliveTimer),this.keepaliveTimer=null),this.mySock&&(this.mySock.close(),this.mySock=null)},t.prototype.onClosed_=function(){this.isClosed_||(this.log_("WebSocket is closing itself"),this.shutdown_(),this.onDisconnect&&(this.onDisconnect(this.everConnected_),this.onDisconnect=null))},t.prototype.close=function(){this.isClosed_||(this.log_("WebSocket is being closed"),this.shutdown_())},t.prototype.resetKeepAlive=function(){var t=this;clearInterval(this.keepaliveTimer),this.keepaliveTimer=setInterval((function(){t.mySock&&t.sendString_("0"),t.resetKeepAlive()}),Math.floor(Un))},t.prototype.sendString_=function(t){try{this.mySock.send(t)}catch(e){this.log_("Exception thrown from WebSocket.send():",e.message||e.data,"Closing connection."),setTimeout(this.onClosed_.bind(this),0)}},t.responsesRequiredToBeHealthy=2,t.healthyTimeout=3e4,t}(),jn=function(){function t(t){this.initTransports_(t)}return Object.defineProperty(t,"ALL_TRANSPORTS",{get:function(){return[Ln,Hn]},enumerable:!0,configurable:!0}),t.prototype.initTransports_=function(e){var n,r,i=Hn&&Hn["isAvailable"](),o=i&&!Hn.previouslyFailed();if(e.webSocketOnly&&(i||N("wss:// URL used, but browser isn't known to support websockets.  Trying anyway."),o=!0),o)this.transports_=[Hn];else{var a=this.transports_=[];try{for(var u=s.__values(t.ALL_TRANSPORTS),h=u.next();!h.done;h=u.next()){var l=h.value;l&&l["isAvailable"]()&&a.push(l)}}catch(c){n={error:c}}finally{try{h&&!h.done&&(r=u.return)&&r.call(u)}finally{if(n)throw n.error}}}},t.prototype.initialTransport=function(){if(this.transports_.length>0)return this.transports_[0];throw new Error("No transports available")},t.prototype.upgradeTransport=function(){return this.transports_.length>1?this.transports_[1]:null},t}(),Bn=6e4,Yn=5e3,Kn=10240,zn=102400,Gn="t",Xn="d",$n="s",Jn="r",Zn="e",tr="o",er="a",nr="n",rr="p",ir="h",or=function(){function t(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_=b("c:"+this.id+":"),this.transportManager_=new jn(e),this.log_("Connection created"),this.start_()}return t.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;i>0&&(this.healthyTimeout_=Y((function(){t.healthyTimeout_=null,t.isHealthy_||(t.conn_&&t.conn_.bytesReceived>zn?(t.log_("Connection exceeded healthy timeout but has received "+t.conn_.bytesReceived+" bytes.  Marking connection healthy."),t.isHealthy_=!0,t.conn_.markConnectionHealthy()):t.conn_&&t.conn_.bytesSent>Kn?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)))},t.prototype.nextTransportId_=function(){return"c:"+this.id+":"+this.connectionCount++},t.prototype.disconnReceiver_=function(t){var e=this;return function(n){t===e.conn_?e.onConnectionLost_(n):t===e.secondaryConn_?(e.log_("Secondary connection lost."),e.onSecondaryConnectionLost_()):e.log_("closing an old connection")}},t.prototype.connReceiver_=function(t){var e=this;return function(n){2!=e.state_&&(t===e.rx_?e.onPrimaryMessageReceived_(n):t===e.secondaryConn_?e.onSecondaryMessageReceived_(n):e.log_("message on old connection"))}},t.prototype.sendRequest=function(t){var e={t:"d",d:t};this.sendData_(e)},t.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)},t.prototype.onSecondaryControl_=function(t){if(Gn in t){var e=t[Gn];e===er?this.upgradeIfSecondaryHealthy_():e===Jn?(this.log_("Got a reset on secondary, closing it"),this.secondaryConn_.close(),this.tx_!==this.secondaryConn_&&this.rx_!==this.secondaryConn_||this.close()):e===tr&&(this.log_("got pong on secondary."),this.secondaryResponsesRequired_--,this.upgradeIfSecondaryHealthy_())}},t.prototype.onSecondaryMessageReceived_=function(t){var e=A("t",t),n=A("d",t);if("c"==e)this.onSecondaryControl_(n);else{if("d"!=e)throw new Error("Unknown protocol layer: "+e);this.pendingDataMessages.push(n)}},t.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:rr,d:{}}}))},t.prototype.proceedWithUpgrade_=function(){this.secondaryConn_.start(),this.log_("sending client ack on secondary"),this.secondaryConn_.send({t:"c",d:{t:er,d:{}}}),this.log_("Ending transmission on primary"),this.conn_.send({t:"c",d:{t:nr,d:{}}}),this.tx_=this.secondaryConn_,this.tryCleanupConnection()},t.prototype.onPrimaryMessageReceived_=function(t){var e=A("t",t),n=A("d",t);"c"==e?this.onControl_(n):"d"==e&&this.onDataMessage_(n)},t.prototype.onDataMessage_=function(t){this.onPrimaryResponse_(),this.onMessage_(t)},t.prototype.onPrimaryResponse_=function(){this.isHealthy_||(this.primaryResponsesRequired_--,this.primaryResponsesRequired_<=0&&(this.log_("Primary connection is healthy."),this.isHealthy_=!0,this.conn_.markConnectionHealthy()))},t.prototype.onControl_=function(t){var e=A(Gn,t);if(Xn in t){var n=t[Xn];if(e===ir)this.onHandshake_(n);else if(e===nr){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 e===$n?this.onConnectionShutdown_(n):e===Jn?this.onReset_(n):e===Zn?T("Server Error: "+n):e===tr?(this.log_("got pong on primary."),this.onPrimaryResponse_(),this.sendPingOnPrimaryIfNecessary_()):T("Unknown control packet command: "+e)}},t.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),G!==n&&N("Protocol version mismatch detected"),this.tryStartUpgrade_())},t.prototype.tryStartUpgrade_=function(){var t=this.transportManager_.upgradeTransport();t&&this.startUpgrade_(t)},t.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),Y((function(){e.secondaryConn_&&(e.log_("Timed out trying to upgrade."),e.secondaryConn_.close())}),Math.floor(Bn))},t.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_())},t.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):Y((function(){n.sendPingOnPrimaryIfNecessary_()}),Math.floor(Yn))},t.prototype.sendPingOnPrimaryIfNecessary_=function(){this.isHealthy_||1!==this.state_||(this.log_("sending ping on primary."),this.sendData_({t:"c",d:{t:rr,d:{}}}))},t.prototype.onSecondaryConnectionLost_=function(){var t=this.secondaryConn_;this.secondaryConn_=null,this.tx_!==t&&this.rx_!==t||this.close()},t.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()&&(p.remove("host:"+this.repoInfo_.host),this.repoInfo_.internalHost=this.repoInfo_.host)),this.close()},t.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()},t.prototype.sendData_=function(t){if(1!==this.state_)throw"Connection is not connected";this.tx_.send(t)},t.prototype.close=function(){2!==this.state_&&(this.log_("Closing realtime connection."),this.state_=2,this.closeConnections_(),this.onDisconnect_&&(this.onDisconnect_(),this.onDisconnect_=null))},t.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)},t}(),sr=function(){function t(){}return t.prototype.put=function(t,e,n,r){},t.prototype.merge=function(t,e,n,r){},t.prototype.refreshAuthToken=function(t){},t.prototype.onDisconnectPut=function(t,e,n){},t.prototype.onDisconnectMerge=function(t,e,n){},t.prototype.onDisconnectCancel=function(t,e){},t.prototype.reportStats=function(t){},t}(),ar=1e3,ur=3e5,hr=3e4,lr=1.3,cr=3e4,pr="server_kill",dr=3,fr=function(t){function e(n,r,i,o,s,u){var h=t.call(this)||this;if(h.repoInfo_=n,h.onDataUpdate_=r,h.onConnectStatus_=i,h.onServerInfoUpdate_=o,h.authTokenProvider_=s,h.authOverride_=u,h.id=e.nextPersistentConnectionId_++,h.log_=b("p:"+h.id+":"),h.interruptReasons_={},h.listens=new Map,h.outstandingPuts_=[],h.outstandingPutCount_=0,h.onDisconnectRequestQueue_=[],h.connected_=!1,h.reconnectDelay_=ar,h.maxReconnectDelay_=ur,h.securityDebugCallback_=null,h.lastSessionId=null,h.establishConnectionTimer_=null,h.visible_=!1,h.requestCBHash_={},h.requestNumber_=0,h.realtime_=null,h.authToken_=null,h.forceTokenRefresh_=!1,h.invalidAuthTokenCount_=0,h.firstConnection_=!0,h.lastConnectionAttemptTime_=null,h.lastConnectionEstablishedTime_=null,u&&!a.isNodeSdk())throw new Error("Auth override specified in options, but not supported on non Node.js platforms");return h.scheduleConnect_(0),yn.getInstance().on("visible",h.onVisible_,h),-1===n.host.indexOf("fblocal")&&vn.getInstance().on("online",h.onOnline_,h),h}return s.__extends(e,t),e.prototype.sendRequest=function(t,e,n){var r=++this.requestNumber_,i={r:r,a:t,b:e};this.log_(a.stringify(i)),a.assert(this.connected_,"sendRequest call when we're not connected not allowed."),this.realtime_.sendRequest(i),n&&(this.requestCBHash_[r]=n)},e.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),a.assert(t.getQueryParams().isDefault()||!t.getQueryParams().loadsAllData(),"listen() called for non-default but complete query"),a.assert(!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)},e.prototype.sendListen_=function(t){var n=this,r=t.query,i=r.path.toString(),o=r.queryIdentifier();this.log_("Listen on "+i+" for "+o);var s={p:i},a="q";t.tag&&(s["q"]=r.queryObject(),s["t"]=t.tag),s["h"]=t.hashFn(),this.sendRequest(a,s,(function(s){var a=s["d"],u=s["s"];e.warnOnListenWarnings_(a,r);var h=n.listens.get(i)&&n.listens.get(i).get(o);h===t&&(n.log_("listen response",s),"ok"!==u&&n.removeListen_(i,o),t.onComplete&&t.onComplete(u,a))}))},e.warnOnListenWarnings_=function(t,e){if(t&&"object"===typeof t&&a.contains(t,"w")){var n=a.safeGet(t,"w");if(Array.isArray(n)&&~n.indexOf("no_index")){var r='".indexOn": "'+e.getQueryParams().getIndex().toString()+'"',i=e.path.toString();N("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.")}}},e.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)},e.prototype.reduceReconnectDelayIfAdminCredential_=function(t){var e=t&&40===t.length;(e||a.isAdmin(t))&&(this.log_("Admin auth credential detected.  Reducing max reconnect time."),this.maxReconnectDelay_=hr)},e.prototype.tryAuth=function(){var t=this;if(this.connected_&&this.authToken_){var e=this.authToken_,n=a.isValidFormat(e)?"auth":"gauth",r={cred:e};null===this.authOverride_?r["noauth"]=!0:"object"===typeof this.authOverride_&&(r["authvar"]=this.authOverride_),this.sendRequest(n,r,(function(n){var r=n["s"],i=n["d"]||"error";t.authToken_===e&&("ok"===r?t.invalidAuthTokenCount_=0:t.onAuthRevoked_(r,i))}))}},e.prototype.unlisten=function(t,e){var n=t.path.toString(),r=t.queryIdentifier();this.log_("Unlisten called for "+n+" "+r),a.assert(t.getQueryParams().isDefault()||!t.getQueryParams().loadsAllData(),"unlisten() called for non-default but complete query");var i=this.removeListen_(n,r);i&&this.connected_&&this.sendUnlisten_(n,r,t.queryObject(),e)},e.prototype.sendUnlisten_=function(t,e,n,r){this.log_("Unlisten on "+t+" for "+e);var i={p:t},o="n";r&&(i["q"]=n,i["t"]=r),this.sendRequest(o,i)},e.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})},e.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})},e.prototype.onDisconnectCancel=function(t,e){this.connected_?this.sendOnDisconnect_("oc",t,null,e):this.onDisconnectRequestQueue_.push({pathString:t,action:"oc",data:null,onComplete:e})},e.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))}))},e.prototype.put=function(t,e,n,r){this.putInternal("p",t,e,n,r)},e.prototype.merge=function(t,e,n,r){this.putInternal("m",t,e,n,r)},e.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)},e.prototype.sendPut_=function(t){var e=this,n=this.outstandingPuts_[t].action,r=this.outstandingPuts_[t].request,i=this.outstandingPuts_[t].onComplete;this.outstandingPuts_[t].queued=this.connected_,this.sendRequest(n,r,(function(r){e.log_(n+" response",r),delete e.outstandingPuts_[t],e.outstandingPutCount_--,0===e.outstandingPutCount_&&(e.outstandingPuts_=[]),i&&i(r["s"],r["d"])}))},e.prototype.reportStats=function(t){var e=this;if(this.connected_){var n={c:t};this.log_("reportStats",n),this.sendRequest("s",n,(function(t){var n=t["s"];if("ok"!==n){var r=t["d"];e.log_("reportStats","Error sending stats: "+r)}}))}},e.prototype.onDataMessage_=function(t){if("r"in t){this.log_("from server: "+a.stringify(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"])}},e.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):T("Unrecognized action received from server: "+a.stringify(t)+"\nAre you using the latest client?")},e.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)},e.prototype.scheduleConnect_=function(t){var e=this;a.assert(!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))},e.prototype.onVisible_=function(t){t&&!this.visible_&&this.reconnectDelay_===this.maxReconnectDelay_&&(this.log_("Window became visible.  Reducing delay."),this.reconnectDelay_=ar,this.realtime_||this.scheduleConnect_(0)),this.visible_=t},e.prototype.onOnline_=function(t){t?(this.log_("Browser went online."),this.reconnectDelay_=ar,this.realtime_||this.scheduleConnect_(0)):(this.log_("Browser went offline.  Killing connection."),this.realtime_&&this.realtime_.close())},e.prototype.onRealtimeDisconnect_=function(){if(this.log_("data client disconnected"),this.connected_=!1,this.realtime_=null,this.cancelSentTransactions_(),this.requestCBHash_={},this.shouldReconnect_()){if(this.visible_){if(this.lastConnectionEstablishedTime_){var t=(new Date).getTime()-this.lastConnectionEstablishedTime_;t>cr&&(this.reconnectDelay_=ar),this.lastConnectionEstablishedTime_=null}}else this.log_("Window isn't visible.  Delaying reconnect."),this.reconnectDelay_=this.maxReconnectDelay_,this.lastConnectionAttemptTime_=(new Date).getTime();var e=(new Date).getTime()-this.lastConnectionAttemptTime_,n=Math.max(0,this.reconnectDelay_-e);n=Math.random()*n,this.log_("Trying to reconnect in "+n+"ms"),this.scheduleConnect_(n),this.reconnectDelay_=Math.min(this.maxReconnectDelay_,this.reconnectDelay_*lr)}this.onConnectStatus_(!1)},e.prototype.establishConnection_=function(){if(this.shouldReconnect_()){this.log_("Making a connection attempt"),this.lastConnectionAttemptTime_=(new Date).getTime(),this.lastConnectionEstablishedTime_=null;var t=this.onDataMessage_.bind(this),n=this.onReady_.bind(this),r=this.onRealtimeDisconnect_.bind(this),i=this.id+":"+e.nextConnectionId_++,o=this,s=this.lastSessionId,u=!1,h=null,l=function(){h?h.close():(u=!0,r())},c=function(t){a.assert(h,"sendRequest call when we're not connected not allowed."),h.sendRequest(t)};this.realtime_={close:l,sendRequest:c};var p=this.forceTokenRefresh_;this.forceTokenRefresh_=!1,this.authTokenProvider_.getToken(p).then((function(e){u?w("getToken() completed but was canceled"):(w("getToken() completed. Creating connection."),o.authToken_=e&&e.accessToken,h=new or(i,o.repoInfo_,t,n,r,(function(t){N(t+" ("+o.repoInfo_.toString()+")"),o.interrupt(pr)}),s))})).then(null,(function(t){o.log_("Failed to get token: "+t),u||(a.CONSTANTS.NODE_ADMIN&&N(t),l())}))}},e.prototype.interrupt=function(t){w("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_())},e.prototype.resume=function(t){w("Resuming connection for reason: "+t),delete this.interruptReasons_[t],a.isEmpty(this.interruptReasons_)&&(this.reconnectDelay_=ar,this.realtime_||this.scheduleConnect_(0))},e.prototype.handleTimestamp_=function(t){var e=t-(new Date).getTime();this.onServerInfoUpdate_({serverTimeOffset:e})},e.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_=[])},e.prototype.onListenRevoked_=function(t,e){var n;n=e?e.map((function(t){return F(t)})).join("$"):"default";var r=this.removeListen_(t,n);r&&r.onComplete&&r.onComplete("permission_denied")},e.prototype.removeListen_=function(t,e){var n,r=new K(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},e.prototype.onAuthRevoked_=function(t,e){w("Auth token revoked: "+t+"/"+e),this.authToken_=null,this.forceTokenRefresh_=!0,this.realtime_.close(),"invalid_token"!==t&&"permission_denied"!==t||(this.invalidAuthTokenCount_++,this.invalidAuthTokenCount_>=dr&&(this.reconnectDelay_=hr,this.authTokenProvider_.notifyForInvalidToken()))},e.prototype.onSecurityDebugPacket_=function(t){this.securityDebugCallback_?this.securityDebugCallback_(t):"msg"in t&&console.log("FIREBASE: "+t["msg"].replace("\n","\nFIREBASE: "))},e.prototype.restoreState_=function(){var t,e,n,r;this.tryAuth();try{for(var i=s.__values(this.listens.values()),o=i.next();!o.done;o=i.next()){var a=o.value;try{for(var u=(n=void 0,s.__values(a.values())),h=u.next();!h.done;h=u.next()){var l=h.value;this.sendListen_(l)}}catch(d){n={error:d}}finally{try{h&&!h.done&&(r=u.return)&&r.call(u)}finally{if(n)throw n.error}}}}catch(f){t={error:f}}finally{try{o&&!o.done&&(e=i.return)&&e.call(i)}finally{if(t)throw t.error}}for(var c=0;c<this.outstandingPuts_.length;c++)this.outstandingPuts_[c]&&this.sendPut_(c);while(this.onDisconnectRequestQueue_.length){var p=this.onDisconnectRequestQueue_.shift();this.sendOnDisconnect_(p.action,p.pathString,p.data,p.onComplete)}},e.prototype.sendConnectStats_=function(){var t={},e="js";a.CONSTANTS.NODE_ADMIN?e="admin_node":a.CONSTANTS.NODE_CLIENT&&(e="node"),t["sdk."+e+"."+Wn.replace(/\./g,"-")]=1,a.isMobileCordova()?t["framework.cordova"]=1:a.isReactNative()&&(t["framework.reactnative"]=1),this.reportStats(t)},e.prototype.shouldReconnect_=function(){var t=vn.getInstance().currentlyOnline();return a.isEmpty(this.interruptReasons_)&&t},e.nextPersistentConnectionId_=0,e.nextConnectionId_=0,e}(sr),_r=function(t){function e(e,n,r){var i=t.call(this)||this;return i.repoInfo_=e,i.onDataUpdate_=n,i.authTokenProvider_=r,i.log_=b("p:rest:"),i.listens_={},i}return s.__extends(e,t),e.prototype.reportStats=function(t){throw new Error("Method not implemented.")},e.getListenId_=function(t,e){return void 0!==e?"tag$"+e:(a.assert(t.getQueryParams().isDefault(),"should have a tag if it's not a default query."),t.path.toString())},e.prototype.listen=function(t,n,r,i){var o=this,s=t.path.toString();this.log_("Listen called for "+s+" "+t.queryIdentifier());var u=e.getListenId_(t,r),h={};this.listens_[u]=h;var l=t.getQueryParams().toRestQueryStringParameters();this.restRequest_(s+".json",l,(function(t,e){var n,l=e;(404===t&&(l=null,t=null),null===t&&o.onDataUpdate_(s,l,!1,r),a.safeGet(o.listens_,u)===h)&&(n=t?401==t?"permission_denied":"rest_error:"+t:"ok",i(n,null))}))},e.prototype.unlisten=function(t,n){var r=e.getListenId_(t,n);delete this.listens_[r]},e.prototype.refreshAuthToken=function(t){},e.prototype.restRequest_=function(t,e,n){var r=this;void 0===e&&(e={}),e["format"]="export",this.authTokenProvider_.getToken(!1).then((function(i){var o=i&&i.accessToken;o&&(e["auth"]=o);var s=(r.repoInfo_.secure?"https://":"http://")+r.repoInfo_.host+t+"?ns="+r.repoInfo_.namespace+a.querystring(e);r.log_("Sending REST request for "+s);var u=new XMLHttpRequest;u.onreadystatechange=function(){if(n&&4===u.readyState){r.log_("REST Response for "+s+" received. status:",u.status,"response:",u.responseText);var t=null;if(u.status>=200&&u.status<300){try{t=a.jsonEval(u.responseText)}catch(e){N("Failed to parse JSON response for "+s+": "+u.responseText)}n(null,t)}else 401!==u.status&&404!==u.status&&N("Got unsuccessful REST response for "+s+" Status: "+u.status),n(u.status);n=null}},u.open("GET",s,!0),u.send()}))},e}(sr),yr="repo_interrupt",vr=function(){function t(t,e,n){var i,o=this;if(this.repoInfo_=t,this.app=n,this.dataUpdateCount=0,this.statsListener_=null,this.eventQueue_=new dn,this.nextWriteId_=1,this.interceptServerDataCallback_=null,this.onDisconnect_=new be,this.persistentConnection_=null,i="undefined"!==typeof r&&Object({NODE_ENV:"production",VUE_APP_NEWS_URL:"https://littlealchemy2.com/public/news/v1/w",VUE_APP_ENCYCLOPEDIA_ORIGIN:"https://littlealchemy2.com",BASE_URL:"/"})[_]?new on(n):new nn(n),this.stats_=an.getCollection(t),e||B())this.server_=new _r(this.repoInfo_,this.onDataUpdate_.bind(this),i),setTimeout(this.onConnectStatus_.bind(this,!0),0);else{var s=n.options["databaseAuthVariableOverride"];if("undefined"!==typeof s&&null!==s){if("object"!==typeof s)throw new Error("Only objects are supported for option databaseAuthVariableOverride");try{a.stringify(s)}catch(u){throw new Error("Invalid authOverride provided: "+u)}}this.persistentConnection_=new fr(this.repoInfo_,this.onDataUpdate_.bind(this),this.onConnectStatus_.bind(this),this.onServerInfoUpdate_.bind(this),i,s),this.server_=this.persistentConnection_}i.addTokenChangeListener((function(t){o.server_.refreshAuthToken(t)})),this.statsReporter_=an.getOrCreateReporter(t,(function(){return new pn(o.stats_,o.server_)})),this.transactions_init_(),this.infoData_=new en,this.infoSyncTree_=new tn({startListening:function(t,e,n,r){var i=[],s=o.infoData_.getNode(t.path);return s.isEmpty()||(i=o.infoSyncTree_.applyServerOverwrite(t.path,s),setTimeout((function(){r("ok")}),0)),i},stopListening:function(){}}),this.updateInfo_("connected",!1),this.serverSyncTree_=new tn({startListening:function(t,e,n,r){return o.server_.listen(t,n,e,(function(e,n){var i=r(e,n);o.eventQueue_.raiseEventsForChangedPath(t.path,i)})),[]},stopListening:function(t,e){o.server_.unlisten(t,e)}})}return t.prototype.toString=function(){return(this.repoInfo_.secure?"https://":"http://")+this.repoInfo_.host},t.prototype.name=function(){return this.repoInfo_.namespace},t.prototype.serverTime=function(){var t=this.infoData_.getNode(new K(".info/serverTimeOffset")),e=t.val()||0;return(new Date).getTime()+e},t.prototype.generateServerValues=function(){return Te({timestamp:this.serverTime()})},t.prototype.onDataUpdate_=function(t,e,n,r){this.dataUpdateCount++;var i=new K(t);e=this.interceptServerDataCallback_?this.interceptServerDataCallback_(t,e):e;var o=[];if(r)if(n){var s=a.map(e,(function(t){return ce(t)}));o=this.serverSyncTree_.applyTaggedQueryMerge(i,s,r)}else{var u=ce(e);o=this.serverSyncTree_.applyTaggedQueryOverwrite(i,u,r)}else if(n){var h=a.map(e,(function(t){return ce(t)}));o=this.serverSyncTree_.applyServerMerge(i,h)}else{var l=ce(e);o=this.serverSyncTree_.applyServerOverwrite(i,l)}var c=i;o.length>0&&(c=this.rerunTransactions_(i)),this.eventQueue_.raiseEventsForChangedPath(c,o)},t.prototype.interceptServerData_=function(t){this.interceptServerDataCallback_=t},t.prototype.onConnectStatus_=function(t){this.updateInfo_("connected",t),!1===t&&this.runOnDisconnectEvents_()},t.prototype.onServerInfoUpdate_=function(t){var e=this;M(t,(function(t,n){e.updateInfo_(t,n)}))},t.prototype.updateInfo_=function(t,e){var n=new K("/.info/"+t),r=ce(e);this.infoData_.updateSnapshot(n,r);var i=this.infoSyncTree_.applyServerOverwrite(n,r);this.eventQueue_.raiseEventsForChangedPath(n,i)},t.prototype.getNextWriteId_=function(){return this.nextWriteId_++},t.prototype.setWithPriority=function(t,e,n,r){var i=this;this.log_("set",{path:t.toString(),value:e,priority:n});var o=this.generateServerValues(),s=ce(e,n),a=Ie(s,o),u=this.getNextWriteId_(),h=this.serverSyncTree_.applyUserOverwrite(t,a,u,!0);this.eventQueue_.queueEvents(h),this.server_.put(t.toString(),s.val(!0),(function(e,n){var o="ok"===e;o||N("set at "+t+" failed: "+e);var s=i.serverSyncTree_.ackUserWrite(u,!o);i.eventQueue_.raiseEventsForChangedPath(t,s),i.callOnCompleteCallback(r,e,n)}));var l=this.abortTransactions_(t);this.rerunTransactions_(l),this.eventQueue_.raiseEventsForChangedPath(l,[])},t.prototype.update=function(t,e,n){var r=this;this.log_("update",{path:t.toString(),value:e});var i=!0,o=this.generateServerValues(),s={};if(M(e,(function(t,e){i=!1;var n=ce(e);s[t]=Ie(n,o)})),i)w("update() called with empty data.  Don't do anything."),this.callOnCompleteCallback(n,"ok");else{var a=this.getNextWriteId_(),u=this.serverSyncTree_.applyUserMerge(t,s,a);this.eventQueue_.queueEvents(u),this.server_.merge(t.toString(),e,(function(e,i){var o="ok"===e;o||N("update at "+t+" failed: "+e);var s=r.serverSyncTree_.ackUserWrite(a,!o),u=s.length>0?r.rerunTransactions_(t):t;r.eventQueue_.raiseEventsForChangedPath(u,s),r.callOnCompleteCallback(n,e,i)})),M(e,(function(e){var n=r.abortTransactions_(t.child(e));r.rerunTransactions_(n)})),this.eventQueue_.raiseEventsForChangedPath(t,[])}},t.prototype.runOnDisconnectEvents_=function(){var t=this;this.log_("onDisconnectEvents");var e=this.generateServerValues(),n=Ne(this.onDisconnect_,e),r=[];n.forEachTree(K.Empty,(function(e,n){r=r.concat(t.serverSyncTree_.applyServerOverwrite(e,n));var i=t.abortTransactions_(e);t.rerunTransactions_(i)})),this.onDisconnect_=new be,this.eventQueue_.raiseEventsForChangedPath(K.Empty,r)},t.prototype.onDisconnectCancel=function(t,e){var n=this;this.server_.onDisconnectCancel(t.toString(),(function(r,i){"ok"===r&&n.onDisconnect_.forget(t),n.callOnCompleteCallback(e,r,i)}))},t.prototype.onDisconnectSet=function(t,e,n){var r=this,i=ce(e);this.server_.onDisconnectPut(t.toString(),i.val(!0),(function(e,o){"ok"===e&&r.onDisconnect_.remember(t,i),r.callOnCompleteCallback(n,e,o)}))},t.prototype.onDisconnectSetWithPriority=function(t,e,n,r){var i=this,o=ce(e,n);this.server_.onDisconnectPut(t.toString(),o.val(!0),(function(e,n){"ok"===e&&i.onDisconnect_.remember(t,o),i.callOnCompleteCallback(r,e,n)}))},t.prototype.onDisconnectUpdate=function(t,e,n){var r=this;if(a.isEmpty(e))return w("onDisconnect().update() called with empty data.  Don't do anything."),void this.callOnCompleteCallback(n,"ok");this.server_.onDisconnectMerge(t.toString(),e,(function(i,o){"ok"===i&&M(e,(function(e,n){var i=ce(n);r.onDisconnect_.remember(t.child(e),i)})),r.callOnCompleteCallback(n,i,o)}))},t.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)},t.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)},t.prototype.interrupt=function(){this.persistentConnection_&&this.persistentConnection_.interrupt(yr)},t.prototype.resume=function(){this.persistentConnection_&&this.persistentConnection_.resume(yr)},t.prototype.stats=function(t){if(void 0===t&&(t=!1),"undefined"!==typeof console){var e;t?(this.statsListener_||(this.statsListener_=new un(this.stats_)),e=this.statsListener_.get()):e=this.stats_.get();var n=Object.keys(e).reduce((function(t,e){return Math.max(e.length,t)}),0);M(e,(function(t,e){for(var r=t,i=t.length;i<n+2;i++)r+=" ";console.log(r+e)}))}},t.prototype.statsIncrementCounter=function(t){this.stats_.incrementCounter(t),this.statsReporter_.includeStat(t)},t.prototype.log_=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];var n="";this.persistentConnection_&&(n=this.persistentConnection_.id+":"),w.apply(void 0,s.__spread([n],t))},t.prototype.callOnCompleteCallback=function(t,e,n){t&&j((function(){if("ok"==e)t(null);else{var r=(e||"error").toUpperCase(),i=r;n&&(i+=": "+n);var o=new Error(i);o.code=r,t(o)}}))},Object.defineProperty(t.prototype,"database",{get:function(){return this.__database||(this.__database=new Pr(this))},enumerable:!0,configurable:!0}),t}(),gr=function(){function t(e){this.indexedFilter_=new qe(e.getIndex()),this.index_=e.getIndex(),this.startPost_=t.getStartPost_(e),this.endPost_=t.getEndPost_(e)}return t.prototype.getStartPost=function(){return this.startPost_},t.prototype.getEndPost=function(){return this.endPost_},t.prototype.matches=function(t){return this.index_.compare(this.getStartPost(),t)<=0&&this.index_.compare(t,this.getEndPost())<=0},t.prototype.updateChild=function(t,e,n,r,i,o){return this.matches(new Ot(e,n))||(n=ae.EMPTY_NODE),this.indexedFilter_.updateChild(t,e,n,r,i,o)},t.prototype.updateFullNode=function(t,e,n){e.isLeafNode()&&(e=ae.EMPTY_NODE);var r=e.withIndex(this.index_);r=r.updatePriority(ae.EMPTY_NODE);var i=this;return e.forEachChild(Gt,(function(t,e){i.matches(new Ot(t,e))||(r=r.updateImmediateChild(t,ae.EMPTY_NODE))})),this.indexedFilter_.updateFullNode(t,r,n)},t.prototype.updatePriority=function(t,e){return t},t.prototype.filtersNodes=function(){return!0},t.prototype.getIndexedFilter=function(){return this.indexedFilter_},t.prototype.getIndex=function(){return this.index_},t.getStartPost_=function(t){if(t.hasStart()){var e=t.getIndexStartName();return t.getIndex().makePost(t.getIndexStartValue(),e)}return t.getIndex().minPost()},t.getEndPost_=function(t){if(t.hasEnd()){var e=t.getIndexEndName();return t.getIndex().makePost(t.getIndexEndValue(),e)}return t.getIndex().maxPost()},t}(),mr=function(){function t(t){this.rangedFilter_=new gr(t),this.index_=t.getIndex(),this.limit_=t.getLimit(),this.reverse_=!t.isViewFromLeft()}return t.prototype.updateChild=function(t,e,n,r,i,o){return this.rangedFilter_.matches(new Ot(e,n))||(n=ae.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)},t.prototype.updateFullNode=function(t,e,n){var r;if(e.isLeafNode()||e.isEmpty())r=ae.EMPTY_NODE.withIndex(this.index_);else if(2*this.limit_<e.numChildren()&&e.isIndexed(this.index_)){r=ae.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_);var o=0;while(i.hasNext()&&o<this.limit_){var s=i.getNext(),a=void 0;if(a=this.reverse_?this.index_.compare(this.rangedFilter_.getStartPost(),s)<=0:this.index_.compare(s,this.rangedFilter_.getEndPost())<=0,!a)break;r=r.updateImmediateChild(s.name,s.node),o++}}else{r=e.withIndex(this.index_),r=r.updatePriority(ae.EMPTY_NODE);var u=void 0,h=void 0,l=void 0;i=void 0;if(this.reverse_){i=r.getReverseIterator(this.index_),u=this.rangedFilter_.getEndPost(),h=this.rangedFilter_.getStartPost();var c=this.index_.getCompare();l=function(t,e){return c(e,t)}}else i=r.getIterator(this.index_),u=this.rangedFilter_.getStartPost(),h=this.rangedFilter_.getEndPost(),l=this.index_.getCompare();o=0;var p=!1;while(i.hasNext()){s=i.getNext();!p&&l(u,s)<=0&&(p=!0);a=p&&o<this.limit_&&l(s,h)<=0;a?o++:r=r.updateImmediateChild(s.name,ae.EMPTY_NODE)}}return this.rangedFilter_.getIndexedFilter().updateFullNode(t,r,n)},t.prototype.updatePriority=function(t,e){return t},t.prototype.filtersNodes=function(){return!0},t.prototype.getIndexedFilter=function(){return this.rangedFilter_.getIndexedFilter()},t.prototype.getIndex=function(){return this.index_},t.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 u=t;a.assert(u.numChildren()==this.limit_,"");var h=new Ot(e,n),l=this.reverse_?u.getFirstChild(this.index_):u.getLastChild(this.index_),c=this.rangedFilter_.matches(h);if(u.hasChild(e)){var p=u.getImmediateChild(e),d=r.getChildAfterChild(this.index_,l,this.reverse_);while(null!=d&&(d.name==e||u.hasChild(d.name)))d=r.getChildAfterChild(this.index_,d,this.reverse_);var f=null==d?1:o(d,h),_=c&&!n.isEmpty()&&f>=0;if(_)return null!=i&&i.trackChildChange(Qe.childChangedChange(e,n,p)),u.updateImmediateChild(e,n);null!=i&&i.trackChildChange(Qe.childRemovedChange(e,p));var y=u.updateImmediateChild(e,ae.EMPTY_NODE),v=null!=d&&this.rangedFilter_.matches(d);return v?(null!=i&&i.trackChildChange(Qe.childAddedChange(d.name,d.node)),y.updateImmediateChild(d.name,d.node)):y}return n.isEmpty()?t:c&&o(l,h)>=0?(null!=i&&(i.trackChildChange(Qe.childRemovedChange(l.name,l.node)),i.trackChildChange(Qe.childAddedChange(e,n))),u.updateImmediateChild(e,n).updateImmediateChild(l.name,ae.EMPTY_NODE)):t},t}(),Cr=function(){function t(){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_=Gt}return t.prototype.hasStart=function(){return this.startSet_},t.prototype.isViewFromLeft=function(){return""===this.viewFrom_?this.startSet_:this.viewFrom_===t.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_LEFT},t.prototype.getIndexStartValue=function(){return a.assert(this.startSet_,"Only valid if start has been set"),this.indexStartValue_},t.prototype.getIndexStartName=function(){return a.assert(this.startSet_,"Only valid if start has been set"),this.startNameSet_?this.indexStartName_:D},t.prototype.hasEnd=function(){return this.endSet_},t.prototype.getIndexEndValue=function(){return a.assert(this.endSet_,"Only valid if end has been set"),this.indexEndValue_},t.prototype.getIndexEndName=function(){return a.assert(this.endSet_,"Only valid if end has been set"),this.endNameSet_?this.indexEndName_:x},t.prototype.hasLimit=function(){return this.limitSet_},t.prototype.hasAnchoredLimit=function(){return this.limitSet_&&""!==this.viewFrom_},t.prototype.getLimit=function(){return a.assert(this.limitSet_,"Only valid if limit has been set"),this.limit_},t.prototype.getIndex=function(){return this.index_},t.prototype.copy_=function(){var e=new t;return e.limitSet_=this.limitSet_,e.limit_=this.limit_,e.startSet_=this.startSet_,e.indexStartValue_=this.indexStartValue_,e.startNameSet_=this.startNameSet_,e.indexStartName_=this.indexStartName_,e.endSet_=this.endSet_,e.indexEndValue_=this.indexEndValue_,e.endNameSet_=this.endNameSet_,e.indexEndName_=this.indexEndName_,e.index_=this.index_,e.viewFrom_=this.viewFrom_,e},t.prototype.limit=function(t){var e=this.copy_();return e.limitSet_=!0,e.limit_=t,e.viewFrom_="",e},t.prototype.limitToFirst=function(e){var n=this.copy_();return n.limitSet_=!0,n.limit_=e,n.viewFrom_=t.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_LEFT,n},t.prototype.limitToLast=function(e){var n=this.copy_();return n.limitSet_=!0,n.limit_=e,n.viewFrom_=t.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_RIGHT,n},t.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},t.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},t.prototype.orderBy=function(t){var e=this.copy_();return e.index_=t,e},t.prototype.getQueryObject=function(){var e=t.WIRE_PROTOCOL_CONSTANTS_,n={};if(this.startSet_&&(n[e.INDEX_START_VALUE]=this.indexStartValue_,this.startNameSet_&&(n[e.INDEX_START_NAME]=this.indexStartName_)),this.endSet_&&(n[e.INDEX_END_VALUE]=this.indexEndValue_,this.endNameSet_&&(n[e.INDEX_END_NAME]=this.indexEndName_)),this.limitSet_){n[e.LIMIT]=this.limit_;var r=this.viewFrom_;""===r&&(r=this.isViewFromLeft()?e.VIEW_FROM_LEFT:e.VIEW_FROM_RIGHT),n[e.VIEW_FROM]=r}return this.index_!==Gt&&(n[e.INDEX]=this.index_.toString()),n},t.prototype.loadsAllData=function(){return!(this.startSet_||this.endSet_||this.limitSet_)},t.prototype.isDefault=function(){return this.loadsAllData()&&this.index_==Gt},t.prototype.getNodeFilter=function(){return this.loadsAllData()?new qe(this.getIndex()):this.hasLimit()?new mr(this):new gr(this)},t.prototype.toRestQueryStringParameters=function(){var e,n=t.REST_QUERY_CONSTANTS_,r={};return this.isDefault()?r:(this.index_===Gt?e=n.PRIORITY_INDEX:this.index_===_e?e=n.VALUE_INDEX:this.index_===Lt?e=n.KEY_INDEX:(a.assert(this.index_ instanceof ye,"Unrecognized index type!"),e=this.index_.toString()),r[n.ORDER_BY]=a.stringify(e),this.startSet_&&(r[n.START_AT]=a.stringify(this.indexStartValue_),this.startNameSet_&&(r[n.START_AT]+=","+a.stringify(this.indexStartName_))),this.endSet_&&(r[n.END_AT]=a.stringify(this.indexEndValue_),this.endNameSet_&&(r[n.END_AT]+=","+a.stringify(this.indexEndName_))),this.limitSet_&&(this.isViewFromLeft()?r[n.LIMIT_TO_FIRST]=this.limit_:r[n.LIMIT_TO_LAST]=this.limit_),r)},t.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"},t.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"},t.DEFAULT=new t,t}(),Er=function(t){function e(e,n){var r=this;if(!(e instanceof vr))throw new Error("new Reference() no longer supported - use app.database().");return r=t.call(this,e,n,Cr.DEFAULT,!1)||this,r}return s.__extends(e,t),e.prototype.getKey=function(){return a.validateArgCount("Reference.key",0,0,arguments.length),this.path.isEmpty()?null:this.path.getBack()},e.prototype.child=function(t){return a.validateArgCount("Reference.child",1,1,arguments.length),"number"===typeof t?t=String(t):t instanceof K||(null===this.path.getFront()?Nt("Reference.child",1,t,!1):St("Reference.child",1,t,!1)),new e(this.repo,this.path.child(t))},e.prototype.getParent=function(){a.validateArgCount("Reference.parent",0,0,arguments.length);var t=this.path.parent();return null===t?null:new e(this.repo,t)},e.prototype.getRoot=function(){a.validateArgCount("Reference.root",0,0,arguments.length);var t=this;while(null!==t.getParent())t=t.getParent();return t},e.prototype.databaseProp=function(){return this.repo.database},e.prototype.set=function(t,e){a.validateArgCount("Reference.set",1,2,arguments.length),It("Reference.set",this.path),gt("Reference.set",1,t,this.path,!1),a.validateCallback("Reference.set",2,e,!0);var n=new a.Deferred;return this.repo.setWithPriority(this.path,t,null,n.wrapCallback(e)),n.promise},e.prototype.update=function(t,e){if(a.validateArgCount("Reference.update",1,2,arguments.length),It("Reference.update",this.path),Array.isArray(t)){for(var n={},r=0;r<t.length;++r)n[""+r]=t[r];t=n,N("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.")}Et("Reference.update",1,t,this.path,!1),a.validateCallback("Reference.update",2,e,!0);var i=new a.Deferred;return this.repo.update(this.path,t,i.wrapCallback(e)),i.promise},e.prototype.setWithPriority=function(t,e,n){if(a.validateArgCount("Reference.setWithPriority",2,3,arguments.length),It("Reference.setWithPriority",this.path),gt("Reference.setWithPriority",1,t,this.path,!1),wt("Reference.setWithPriority",2,e,!1),a.validateCallback("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 a.Deferred;return this.repo.setWithPriority(this.path,t,e,r.wrapCallback(n)),r.promise},e.prototype.remove=function(t){return a.validateArgCount("Reference.remove",0,1,arguments.length),It("Reference.remove",this.path),a.validateCallback("Reference.remove",1,t,!0),this.set(null,t)},e.prototype.transaction=function(t,e,n){if(a.validateArgCount("Reference.transaction",1,3,arguments.length),It("Reference.transaction",this.path),a.validateCallback("Reference.transaction",1,t,!1),a.validateCallback("Reference.transaction",2,e,!0),Rt("Reference.transaction",3,n,!0),".length"===this.getKey()||".keys"===this.getKey())throw"Reference.transaction failed: "+this.getKey()+" is a read-only object.";void 0===n&&(n=!0);var r=new a.Deferred;"function"===typeof e&&r.promise.catch((function(){}));var i=function(t,n,i){t?r.reject(t):r.resolve(new xt(n,i)),"function"===typeof e&&e(t,n,i)};return this.repo.startTransaction(this.path,t,i,n),r.promise},e.prototype.setPriority=function(t,e){a.validateArgCount("Reference.setPriority",1,2,arguments.length),It("Reference.setPriority",this.path),wt("Reference.setPriority",1,t,!1),a.validateCallback("Reference.setPriority",2,e,!0);var n=new a.Deferred;return this.repo.setWithPriority(this.path.child(".priority"),t,null,n.wrapCallback(e)),n.promise},e.prototype.push=function(t,e){a.validateArgCount("Reference.push",0,2,arguments.length),It("Reference.push",this.path),gt("Reference.push",1,t,this.path,!0),a.validateCallback("Reference.push",2,e,!0);var n,r=this.repo.serverTime(),i=kt(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},e.prototype.onDisconnect=function(){return It("Reference.onDisconnect",this.path),new Dt(this.repo,this.path)},Object.defineProperty(e.prototype,"database",{get:function(){return this.databaseProp()},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"key",{get:function(){return this.getKey()},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"parent",{get:function(){return this.getParent()},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"root",{get:function(){return this.getRoot()},enumerable:!0,configurable:!0}),e}(we);
/**
 * @license
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */we.__referenceConstructor=Er,Ge.__referenceConstructor=Er;
/**
 * @license
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
var wr,br=function(){function t(){this.children={},this.childCount=0,this.value=null}return t}(),Tr=function(){function t(t,e,n){void 0===t&&(t=""),void 0===e&&(e=null),void 0===n&&(n=new br),this.name_=t,this.parent_=e,this.node_=n}return t.prototype.subTree=function(e){var n,r=e instanceof K?e:new K(e),i=this;while(null!==(n=r.getFront())){var o=a.safeGet(i.node_.children,n)||new br;i=new t(n,i,o),r=r.popFront()}return i},t.prototype.getValue=function(){return this.node_.value},t.prototype.setValue=function(t){a.assert("undefined"!==typeof t,"Cannot set value to undefined"),this.node_.value=t,this.updateParents_()},t.prototype.clear=function(){this.node_.value=null,this.node_.children={},this.node_.childCount=0,this.updateParents_()},t.prototype.hasChildren=function(){return this.node_.childCount>0},t.prototype.isEmpty=function(){return null===this.getValue()&&!this.hasChildren()},t.prototype.forEachChild=function(e){var n=this;M(this.node_.children,(function(r,i){e(new t(r,n,i))}))},t.prototype.forEachDescendant=function(t,e,n){e&&!n&&t(this),this.forEachChild((function(e){e.forEachDescendant(t,!0,n)})),e&&n&&t(this)},t.prototype.forEachAncestor=function(t,e){var n=e?this:this.parent();while(null!==n){if(t(n))return!0;n=n.parent()}return!1},t.prototype.forEachImmediateDescendantWithValue=function(t){this.forEachChild((function(e){null!==e.getValue()?t(e):e.forEachImmediateDescendantWithValue(t)}))},t.prototype.path=function(){return new K(null===this.parent_?this.name_:this.parent_.path()+"/"+this.name_)},t.prototype.name=function(){return this.name_},t.prototype.parent=function(){return this.parent_},t.prototype.updateParents_=function(){null!==this.parent_&&this.parent_.updateChild_(this.name_,this)},t.prototype.updateChild_=function(t,e){var n=e.isEmpty(),r=a.contains(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_())},t}();(function(t){t[t["RUN"]=0]="RUN",t[t["SENT"]=1]="SENT",t[t["COMPLETED"]=2]="COMPLETED",t[t["SENT_NEEDS_ABORT"]=3]="SENT_NEEDS_ABORT",t[t["NEEDS_ABORT"]=4]="NEEDS_ABORT"})(wr||(wr={})),vr.MAX_TRANSACTION_RETRIES_=25,vr.prototype.transactions_init_=function(){this.transactionQueueTree_=new Tr},vr.prototype.startTransaction=function(t,e,n,r){this.log_("transaction on "+t);var i=function(){},o=new Er(this,t);o.on("value",i);var s=function(){o.off("value",i)},u={path:t,update:e,onComplete:n,status:null,order:y(),applyLocally:r,retryCount:0,unwatcher:s,abortReason:null,currentWriteId:null,currentInputSnapshot:null,currentOutputSnapshotRaw:null,currentOutputSnapshotResolved:null},h=this.getLatestState_(t);u.currentInputSnapshot=h;var l=u.update(h.val());if(void 0===l){if(u.unwatcher(),u.currentOutputSnapshotRaw=null,u.currentOutputSnapshotResolved=null,u.onComplete){var c=new ve(u.currentInputSnapshot,new Er(this,u.path),Gt);u.onComplete(null,!1,c)}}else{mt("transaction failed: Data returned ",l,u.path),u.status=wr.RUN;var p=this.transactionQueueTree_.subTree(t),d=p.getValue()||[];d.push(u),p.setValue(d);var f=void 0;if("object"===typeof l&&null!==l&&a.contains(l,".priority"))f=a.safeGet(l,".priority"),a.assert(vt(f),"Invalid priority returned by transaction. Priority must be a valid string, finite number, server value, or null.");else{var _=this.serverSyncTree_.calcCompleteEventCache(t)||ae.EMPTY_NODE;f=_.getPriority().val()}f=f;var v=this.generateServerValues(),g=ce(l,f),m=Ie(g,v);u.currentOutputSnapshotRaw=g,u.currentOutputSnapshotResolved=m,u.currentWriteId=this.getNextWriteId_();var C=this.serverSyncTree_.applyUserOverwrite(t,m,u.currentWriteId,u.applyLocally);this.eventQueue_.raiseEventsForChangedPath(t,C),this.sendReadyTransactions_()}},vr.prototype.getLatestState_=function(t,e){return this.serverSyncTree_.calcCompleteEventCache(t,e)||ae.EMPTY_NODE},vr.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);a.assert(n.length>0,"Sending zero length transaction queue");var r=n.every((function(t){return t.status===wr.RUN}));r&&this.sendTransactionQueue_(t.path(),n)}else t.hasChildren()&&t.forEachChild((function(t){e.sendReadyTransactions_(t)}))},vr.prototype.sendTransactionQueue_=function(t,e){for(var n=this,r=e.map((function(t){return t.currentWriteId})),i=this.getLatestState_(t,r),o=i,s=i.hash(),u=0;u<e.length;u++){var h=e[u];a.assert(h.status===wr.RUN,"tryToSendTransactionQueue_: items in queue should all be run."),h.status=wr.SENT,h.retryCount++;var l=K.relativePath(t,h.path);o=o.updateChild(l,h.currentOutputSnapshotRaw)}var c=o.val(!0),p=t;this.server_.put(p.toString(),c,(function(r){n.log_("transaction put response",{path:p.toString(),status:r});var i=[];if("ok"===r){for(var o=[],s=0;s<e.length;s++){if(e[s].status=wr.COMPLETED,i=i.concat(n.serverSyncTree_.ackUserWrite(e[s].currentWriteId)),e[s].onComplete){var a=e[s].currentOutputSnapshotResolved,u=new Er(n,e[s].path),h=new ve(a,u,Gt);o.push(e[s].onComplete.bind(null,null,!0,h))}e[s].unwatcher()}n.pruneCompletedTransactionsBelowNode_(n.transactionQueueTree_.subTree(t)),n.sendReadyTransactions_(),n.eventQueue_.raiseEventsForChangedPath(t,i);for(s=0;s<o.length;s++)j(o[s])}else{if("datastale"===r)for(s=0;s<e.length;s++)e[s].status===wr.SENT_NEEDS_ABORT?e[s].status=wr.NEEDS_ABORT:e[s].status=wr.RUN;else{N("transaction at "+p.toString()+" failed: "+r);for(s=0;s<e.length;s++)e[s].status=wr.NEEDS_ABORT,e[s].abortReason=r}n.rerunTransactions_(t)}}),s)},vr.prototype.rerunTransactions_=function(t){var e=this.getAncestorTransactionNode_(t),n=e.path(),r=this.buildTransactionQueue_(e);return this.rerunTransactionQueue_(r,n),n},vr.prototype.rerunTransactionQueue_=function(t,e){if(0!==t.length){for(var n=[],r=[],i=t.filter((function(t){return t.status===wr.RUN})),o=i.map((function(t){return t.currentWriteId})),s=0;s<t.length;s++){var u=t[s],h=K.relativePath(e,u.path),l=!1,c=void 0;if(a.assert(null!==h,"rerunTransactionsUnderNode_: relativePath should not be null."),u.status===wr.NEEDS_ABORT)l=!0,c=u.abortReason,r=r.concat(this.serverSyncTree_.ackUserWrite(u.currentWriteId,!0));else if(u.status===wr.RUN)if(u.retryCount>=vr.MAX_TRANSACTION_RETRIES_)l=!0,c="maxretry",r=r.concat(this.serverSyncTree_.ackUserWrite(u.currentWriteId,!0));else{var p=this.getLatestState_(u.path,o);u.currentInputSnapshot=p;var d=t[s].update(p.val());if(void 0!==d){mt("transaction failed: Data returned ",d,u.path);var f=ce(d),_="object"===typeof d&&null!=d&&a.contains(d,".priority");_||(f=f.updatePriority(p.getPriority()));var y=u.currentWriteId,v=this.generateServerValues(),g=Ie(f,v);u.currentOutputSnapshotRaw=f,u.currentOutputSnapshotResolved=g,u.currentWriteId=this.getNextWriteId_(),o.splice(o.indexOf(y),1),r=r.concat(this.serverSyncTree_.applyUserOverwrite(u.path,g,u.currentWriteId,u.applyLocally)),r=r.concat(this.serverSyncTree_.ackUserWrite(y,!0))}else l=!0,c="nodata",r=r.concat(this.serverSyncTree_.ackUserWrite(u.currentWriteId,!0))}if(this.eventQueue_.raiseEventsForChangedPath(e,r),r=[],l&&(t[s].status=wr.COMPLETED,function(t){setTimeout(t,Math.floor(0))}(t[s].unwatcher),t[s].onComplete))if("nodata"===c){var m=new Er(this,t[s].path),C=t[s].currentInputSnapshot,E=new ve(C,m,Gt);n.push(t[s].onComplete.bind(null,null,!1,E))}else n.push(t[s].onComplete.bind(null,new Error(c),!1,null))}this.pruneCompletedTransactionsBelowNode_(this.transactionQueueTree_);for(s=0;s<n.length;s++)j(n[s]);this.sendReadyTransactions_()}},vr.prototype.getAncestorTransactionNode_=function(t){var e,n=this.transactionQueueTree_;while(null!==(e=t.getFront())&&null===n.getValue())n=n.subTree(e),t=t.popFront();return n},vr.prototype.buildTransactionQueue_=function(t){var e=[];return this.aggregateTransactionQueuesForNode_(t,e),e.sort((function(t,e){return t.order-e.order})),e},vr.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)}))},vr.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!==wr.COMPLETED&&(n[r]=n[i],r++);n.length=r,t.setValue(n.length>0?n:null)}t.forEachChild((function(t){e.pruneCompletedTransactionsBelowNode_(t)}))},vr.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},vr.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===wr.SENT_NEEDS_ABORT);else if(e[o].status===wr.SENT)a.assert(i===o-1,"All SENT items should be at beginning of queue."),i=o,e[o].status=wr.SENT_NEEDS_ABORT,e[o].abortReason="set";else if(a.assert(e[o].status===wr.RUN,"Unexpected transaction status in abort"),e[o].unwatcher(),r=r.concat(this.serverSyncTree_.ackUserWrite(e[o].currentWriteId,!0)),e[o].onComplete){var s=null;n.push(e[o].onComplete.bind(null,new Error("set"),!1,s))}-1===i?t.setValue(null):e.length=i+1,this.eventQueue_.raiseEventsForChangedPath(t.path(),r);for(o=0;o<n.length;o++)j(n[o])}};
/**
 * @license
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
var Sr,Nr="databaseURL",Ir=function(){function t(){this.repos_={},this.useRestClient_=!1}return t.getInstance=function(){return Sr||(Sr=new t),Sr},t.prototype.interrupt=function(){for(var t in this.repos_)for(var e in this.repos_[t])this.repos_[t][e].interrupt()},t.prototype.resume=function(){for(var t in this.repos_)for(var e in this.repos_[t])this.repos_[t][e].resume()},t.prototype.databaseFromApp=function(t,e){var n=e||t.options[Nr];void 0===n&&S("Can't determine Firebase Database URL.  Be sure to include "+Nr+" option when calling firebase.initializeApp().");var i=ht(n),o=i.repoInfo,s=void 0;"undefined"!==typeof r&&(s=Object({NODE_ENV:"production",VUE_APP_NEWS_URL:"https://littlealchemy2.com/public/news/v1/w",VUE_APP_ENCYCLOPEDIA_ORIGIN:"https://littlealchemy2.com",BASE_URL:"/"})[_]),s&&(n="http://"+s+"?ns="+o.namespace,i=ht(n),o=i.repoInfo),Pt("Invalid Firebase Database URL",1,i),i.path.isEmpty()||S("Database URL must point to the root of a Firebase Database (not including a child path).");var a=this.createRepo(o,t);return a.database},t.prototype.deleteRepo=function(t){var e=a.safeGet(this.repos_,t.app.name);e&&a.safeGet(e,t.repoInfo_.toURLString())===t||S("Database "+t.app.name+"("+t.repoInfo_+") has already been deleted."),t.interrupt(),delete e[t.repoInfo_.toURLString()]},t.prototype.createRepo=function(t,e){var n=a.safeGet(this.repos_,e.name);n||(n={},this.repos_[e.name]=n);var r=a.safeGet(n,t.toURLString());return r&&S("Database initialized multiple times. Please make sure the format of the database URL matches with each database() call."),r=new vr(t,this.useRestClient_,e),n[t.toURLString()]=r,r},t.prototype.forceRestClient=function(t){this.useRestClient_=t},t}(),Pr=function(){function t(t){this.repo_=t,t instanceof vr||S("Don't call new Database() directly - please use firebase.database()."),this.root_=new Er(t,K.Empty),this.INTERNAL=new Rr(this)}return Object.defineProperty(t.prototype,"app",{get:function(){return this.repo_.app},enumerable:!0,configurable:!0}),t.prototype.ref=function(t){return this.checkDeleted_("ref"),a.validateArgCount("database.ref",0,1,arguments.length),t instanceof Er?this.refFromURL(t.toString()):void 0!==t?this.root_.child(t):this.root_},t.prototype.refFromURL=function(t){var e="database.refFromURL";this.checkDeleted_(e),a.validateArgCount(e,1,1,arguments.length);var n=ht(t);Pt(e,1,n);var r=n.repoInfo;return r.host!==this.repo_.repoInfo_.host&&S(e+": Host name does not match the current database: (found "+r.host+" but expected "+this.repo_.repoInfo_.host+")"),this.ref(n.path.toString())},t.prototype.checkDeleted_=function(t){null===this.repo_&&S("Cannot call "+t+" on a deleted database.")},t.prototype.goOffline=function(){a.validateArgCount("database.goOffline",0,0,arguments.length),this.checkDeleted_("goOffline"),this.repo_.interrupt()},t.prototype.goOnline=function(){a.validateArgCount("database.goOnline",0,0,arguments.length),this.checkDeleted_("goOnline"),this.repo_.resume()},t.ServerValue={TIMESTAMP:{".sv":"timestamp"}},t}(),Rr=function(){function t(t){this.database=t}return t.prototype.delete=function(){return s.__awaiter(this,void 0,void 0,(function(){return s.__generator(this,(function(t){return this.database.checkDeleted_("delete"),Ir.getInstance().deleteRepo(this.database.repo_),this.database.repo_=null,this.database.root_=null,this.database.INTERNAL=null,this.database=null,[2]}))}))},t}(),Dr=function(){Hn.forceDisallow(),Ln.forceAllow()},xr=function(){Ln.forceDisallow()},kr=function(){return Hn["isAvailable"]()},Or=function(t,e){t.repo.persistentConnection_.securityDebugCallback_=e},Ar=function(t,e){t.repo.stats(e)},Fr=function(t,e){t.repo.statsIncrementCounter(e)},Lr=function(t){return t.repo.dataUpdateCount},Mr=function(t,e){return t.repo.interceptServerData_(e)},Wr=Object.freeze({forceLongPolling:Dr,forceWebSockets:xr,isWebSocketsAvailable:kr,setSecurityDebugCallback:Or,stats:Ar,statsIncrementCounter:Fr,dataUpdateCount:Lr,interceptServerData:Mr}),Qr=fr;fr.prototype.simpleListen=function(t,e){this.sendRequest("q",{p:t},e)},fr.prototype.echo=function(t,e){this.sendRequest("echo",{d:t},e)};var qr=or,Ur=function(t){var e=fr.prototype.put;return fr.prototype.put=function(n,r,i,o){void 0!==o&&(o=t()),e.call(this,n,r,i,o)},function(){fr.prototype.put=e}},Vr=it,Hr=function(t){return t.queryIdentifier()},jr=function(t){Ir.getInstance().forceRestClient(t)},Br=Object.freeze({DataConnection:Qr,RealTimeConnection:qr,hijackHash:Ur,ConnectionTarget:Vr,queryIdentifier:Hr,forceRestClient:jr}),Yr=Pr.ServerValue;function Kr(e){Qn(e.SDK_VERSION);var n=e.INTERNAL.registerService("database",(function(t,e,n){return Ir.getInstance().databaseFromApp(t,n)}),{Reference:Er,Query:we,Database:Pr,DataSnapshot:ve,enableLogging:E,INTERNAL:Wr,ServerValue:Yr,TEST_ACCESS:Br},null,!0);a.isNodeSdk()&&(t.exports=n)}Kr(o),e.DataSnapshot=ve,e.Database=Pr,e.OnDisconnect=Dt,e.Query=we,e.Reference=Er,e.ServerValue=Yr,e.enableLogging=E,e.registerDatabase=Kr}).call(this,n("7fb2"))},"66ce":function(t,e,n){"use strict";n.r(e);n("3523")},"7fb2":function(t,e,n){e.nextTick=function(t){var e=Array.prototype.slice.call(arguments);e.shift(),setTimeout((function(){t.apply(null,e)}),0)},e.platform=e.arch=e.execPath=e.title="browser",e.pid=1,e.browser=!0,e.env={},e.argv=[],e.binding=function(t){throw new Error("No such module. 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