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r=this;g.forEach(e.children,function(t){r._decorateTrie(t),(t.local||t.localDescendants)&&(e.localDescendants=!0)})},dt.prototype._augmentClass=function(t){for(var e,r=t.prototype;r&&r.constructor!==Object;){for(var n=0,i=Object.getOwnPropertyNames(r);n<i.length;n+=1){var o=i[n],s=Object.getOwnPropertyDescriptor(r,o);if("$"===o.charAt(0)){if("$finalize"===o)continue;if(g.isEqual(s,Object.getOwnPropertyDescriptor(ht.prototype,o)))continue;throw new Error('Property names starting with "$" are reserved: '+t.name+"."+o)}!s.get||e&&e[o]||((e=e||{})[o]={name:o,fullName:r.constructor.name+"."+o,get:s.get,set:s.set})}r=Object.getPrototypeOf(r)}for(var a=0,u=Object.getOwnPropertyNames(ht.prototype);a<u.length;a+=1){var c=u[a];"constructor"===c||t.prototype.hasOwnProperty(c)||Object.defineProperty(t.prototype,c,Object.getOwnPropertyDescriptor(ht.prototype,c))}return e},dt.prototype._mountClass=function(a,u){var c=this,h=this._augmentClass(a),l=[],t=a.$trussMount;if(!t)throw new Error("Class "+a.name+" lacks a $trussMount static property");g.isArray(t)||(t=[t]),g.forEach(t,function(t){if(g.isString(t)&&(t={path:t}),!u&&"/"===t.path)throw new Error("Data root already accessed, too late to mount class");for(var e=b(t.path),r=0,n=e.variables;r<n.length;r+=1){var i=n[r];if("$"===i||"$"===i.charAt(1))throw new Error("Invalid variable name: "+i);if("$"===i.charAt(0)&&(g.has(ht.prototype,i)||ut[i]))throw new Error("Variable name conflicts with built-in property or method: "+i);l.push(i)}var o=t.path.match(/\/([^/]*)$/)[1];if("$"===o.charAt(0)){if(t.placeholder)throw new Error("Class "+a.name+" mounted at wildcard "+o+" cannot be a placeholder")}else g.has(t,"placeholder")||(t.placeholder={});var s=c._getMount(t.path.replace(/\$[^/]*/g,"$"),!0);if(s.matcher&&(s.escapedKey===o||"$"===s.escapedKey.charAt(0)&&"$"===o.charAt(0)))throw new Error("Multiple classes mounted at "+t.path+": "+s.Class.name+", "+a.name);g.assign(s,{Class:a,matcher:e,computedProperties:h,escapedKey:o},g.pick(t,"placeholder","local","keysUnsafe","hidden"))}),g.forEach(l,function(t){a.prototype[t]||Object.defineProperty(a.prototype,t,{get:function(){return st?st[t]&&st[t].value:void 0}})})},dt.prototype.createObject=function(t,e){var r=this,n=this._getMount(t)||{Class:ht};try{if(n.matcher){var i=n.matcher.match(t);for(var o in i)e[o]={value:i[o]}}st=e;var s=new n.Class;return st=null,f.active&&this._wrapProperties(s),n.keysUnsafe&&(e.$data={value:Object.create(null),configurable:!0,enumerable:!0}),n.hidden&&(e.$hidden={value:!0}),n.computedProperties&&g.forEach(n.computedProperties,function(t){e[t.name]=r._buildComputedPropertyDescriptor(s,t)}),s}catch(t){throw t.extra=g.assign({mount:n,properties:e,className:n.Class&&n.Class.name},t.extra),t}},dt.prototype._wrapProperties=function(i){g.forEach(i,function(t,e){var r,n="$_"+e;Object.defineProperties(i,((r={})[n]={value:t,writable:!0},r[e]={get:function(){return i[n]},set:function(t){i[n]=t,f.digest()},enumerable:!0,configurable:!0},r))})},dt.prototype._buildComputedPropertyDescriptor=function(s,a){var u,c,h=this,l=W.for(a.fullName),p=!1;return s.$$initializers.push(function(t){var e=!1,r=function(t,e){if(this.$destroyed)return;this.$$touchThis();var r=at;at=!1;var n,i=I();try{try{n=t.get.call(this)}catch(t){n=new pt(t)}finally{e.runtime+=I()-i,e.numRecomputes+=1}return at&&(n=new ft(n)),n}finally{at=r}}.bind(s,a,l);h._debug&&(r.toString=function(){return a.fullName});var n=function(){e=!0},n=t.$watch(r,function(t){if(s.$destroyed)n();else if(c&&(c.cancel&&c.cancel(),c=void 0),g.isObject(t)&&g.isFunction(t.then)){var e=t.then(function(t){e===c&&o(t)},function(t){if(e===c&&o(new pt(t))&&!t.trussExpectedException)throw t});c=e}else if(o(t)&&(f.digest(),t instanceof pt&&!t.error.trussExpectedException))throw t.error},{immediate:!0}),i=g.last(t._watchers);function o(t){return t instanceof ft&&(t=t.value,n(),g.pull(s.$$finalizers,n)),!R(u,t)&&(l.numUpdates+=1,p=!0,s[a.name]=t,p=!1,function e(t){if(g.isNil(t)||!g.isObject(t)||Object.isFrozen(t)||t.$truss)return t;t=Object.freeze(t);if(g.isArray(t))return g.map(t,function(t){return e(t)});return g.mapValues(t,function(t){return e(t)})}(t),1)}i.id=-i.id,e?n():s.$$finalizers.push(n)}),{enumerable:!0,configurable:!0,get:function(){if(!p&&u instanceof pt)throw u.error;return u},set:function(t){if(p)u=t;else{if(!a.set)throw new Error("You cannot set a computed property: "+a.name);a.set.call(this,t)}}}},dt.prototype.destroyObject=function(t){if(g.has(t,"$$finalizers"))for(var e=0,r=g.clone(t.$$finalizers);e<r.length;e+=1){(0,r[e])()}g.isFunction(t.$finalize)&&t.$finalize(),Object.defineProperty(t,"$destroyed",{value:!0,enumerable:!1,configurable:!1})},dt.prototype.isPlaceholder=function(t){var e=this._getMount(t);return e&&e.placeholder},dt.prototype.isLocal=function(t,e){var r=this._getMount(t,!1,function(t){return t.local});if(r&&r.local)return!0;if(this._hasLocalProperties(r,e))throw new Error("Write on a mix of local and remote tree paths.");return!1},dt.prototype._hasLocalProperties=function(t,e){if(!t)return!1;if(t.local)return!0;if(!t.localDescendants||!g.isObject(e))return!1;for(var r in e){if(this._hasLocalProperties(t.children[p(r)]||t.children.$,e[r]))return!0}return!1},dt.prototype.forEachPlaceholderChild=function(t,e){var r=this._getMount(t);g.forEach(r&&r.children,function(t){t.placeholder&&e(t)})},dt.prototype.checkVueObject=function(e,t,r){var n=!r;n&&(r=[]);try{for(var i=0,o=Object.getOwnPropertyNames(e);i<o.length;i+=1){var s=o[i];if(!(ut[s]||ht.prototype.hasOwnProperty(s)||/^\$_/.test(s))){var a=this._findMount(function(t){return t.Class===e.constructor});if(!(a&&a.matcher&&g.includes(a.matcher.variables,s))){var u=void 0;try{u=e[s]}catch(t){continue}if(!g.isArray(e)||!/\d+/.test(s)&&"length"!==s){var c=Object.getOwnPropertyDescriptor(e,s);if("value"in c||!c.get)throw new Error("Value at "+t+", contained in a Firetruss object, has a rogue property: "+s);if(e.$truss&&c.enumerable)try{throw e[s]=u,new Error("Firetruss object at "+t+" has an enumerable non-Firebase property: "+s)}catch(t){if("firebase_overwrite"!==t.trussCode)throw t}}g.isObject(u)&&!u.$$$trussCheck&&Object.isExtensible(u)&&!(g.isFunction(u)||u instanceof Promise)&&(u.$$$trussCheck=!0,r.push(u),this.checkVueObject(u,y(t,p(s)),r))}}}}finally{if(n)for(var h=0,l=r;h<l.length;h+=1){delete l[h].$$$trussCheck}}};function _t(t,e){this._coupler=t,this._query=e,this._listeners=[],this._keys=[],this._url=this._coupler._rootUrl+e.path,this._segments=v(e.path,!0),this._listening=!1,this.ready=!1}_t.prototype.attach=function(t,e){this._listen(),this._listeners.push({operation:t,keysCallback:e}),e&&e(this._keys)},_t.prototype.detach=function(t){var e=g.findIndex(this._listeners,{operation:t});return 0<=e&&this._listeners.splice(e,1),this._listeners.length},_t.prototype._listen=function(){this._listening||(this._coupler._bridge.on(this._query.toString(),this._url,this._query.constraints,"value",this._handleSnapshot,this._handleError,this,{sync:!0}),this._listening=!0)},_t.prototype.destroy=function(){this._coupler._bridge.off(this._query.toString(),this._url,this._query.constraints,"value",this._handleSnapshot,this),this._listening=!1,this.ready=!1,f.digest();for(var t=0,e=this._keys;t<e.length;t+=1){var r=e[t];this._coupler._decoupleSegments(this._segments.concat(r))}},_t.prototype._handleSnapshot=function(a){var u=this;this._coupler._queueSnapshotCallback(function(){if(u._listeners.length&&u._listening){var t=u._updateKeys(a);if(u._coupler._applySnapshot(a),!u.ready){u.ready=!0,f.digest();for(var e=0,r=u._listeners;e<r.length;e+=1){var n=r[e];u._coupler._dispatcher.markReady(n.operation)}}if(t)for(var i=0,o=u._listeners;i<o.length;i+=1){var s=o[i];s.keysCallback&&s.keysCallback(t)}}})},_t.prototype._updateKeys=function(t){var e,r;if(t.path===this._query.path)if((e=g.keys(t.value)).sort(),g.isEqual(this._keys,e))e=null;else{for(var n=0,i=g.difference(e,this._keys);n<i.length;n+=1){var o=i[n];this._coupler._coupleSegments(this._segments.concat(o))}for(var s=0,a=g.difference(this._keys,e);s<a.length;s+=1){var u=a[s];this._coupler._decoupleSegments(this._segments.concat(u))}this._keys=e}else t.path.replace(/\/[^/]+/,"")===this._query.path&&(r=g.includes(this._keys,t.key),t.value?r||(this._coupler._coupleSegments(this._segments.concat(t.key)),this._keys.push(t.key),this._keys.sort(),e=this._keys):r&&(this._coupler._decoupleSegments(this._segments.concat(t.key)),g.pull(this._keys,t.key),this._keys.sort(),e=this._keys));return e},_t.prototype._handleError=function(n){var i=this;this._listeners.length&&this._listening&&(this._listening=!1,this.ready=!1,f.digest(),Promise.all(g.map(this._listeners,function(e){return i._coupler._dispatcher.clearReady(e.operation),i._coupler._dispatcher.retry(e.operation,n).catch(function(t){return e.operation._disconnect(t),!1})})).then(function(t){if(g.some(t))i._listeners.length&&i._listen();else for(var e=0,r=i._listeners;e<r.length;e+=1){r[e].operation._disconnect(n)}}))};function yt(t,e,r){this._coupler=t,this.path=e,this.parent=r,this.url=this._coupler._rootUrl+e,this.operations=[],this.queryCount=0,this.listening=!1,this.ready=!1,this.children={}}var gt={active:{configurable:!0},count:{configurable:!0}};gt.active.get=function(){return this.count||this.queryCount},gt.count.get=function(){return this.operations.length},yt.prototype.listen=function(t){var e=this;if(!t&&this.count){if(this.listening)return;g.forEach(this.operations,function(t){e._coupler._dispatcher.clearReady(t)}),this._coupler._bridge.on(this.url,this.url,null,"value",this._handleSnapshot,this._handleError,this,{sync:!0}),this.listening=!0}else g.forEach(this.children,function(t){t.listen()})},yt.prototype.unlisten=function(t){!t&&this.listening?(this._coupler._bridge.off(this.url,this.url,null,"value",this._handleSnapshot,this),this.listening=!1,this._forAllDescendants(function(t){return!t.listening&&void(t.ready&&(t.ready=!1,f.digest()))})):g.forEach(this.children,function(t){t.unlisten()})},yt.prototype._handleSnapshot=function(t){var i=this;this._coupler._queueSnapshotCallback(function(){i.listening&&i._coupler.isTrunkCoupled(t.path)&&(i._coupler._applySnapshot(t),i.ready||t.path!==i.path||(i.ready=!0,f.digest(),i.unlisten(!0),i._forAllDescendants(function(t){for(var e=0,r=t.operations;e<r.length;e+=1){var n=r[e];i._coupler._dispatcher.markReady(n)}})))})},yt.prototype._handleError=function(n){var i=this;if(this.count&&this.listening)return this.listening=!1,this._forAllDescendants(function(t){if(t.listening)return!1;t.ready&&(t.ready=!1,f.digest());for(var e=0,r=t.operations;e<r.length;e+=1){var n=r[e];i._coupler._dispatcher.clearReady(n)}}),Promise.all(g.map(this.operations,function(e){return i._coupler._dispatcher.retry(e,n).catch(function(t){return e._disconnect(t),!1})})).then(function(t){if(g.some(t))i.count&&i.listen();else for(var e=0,r=i.operations;e<r.length;e+=1){r[e]._disconnect(n)}})},yt.prototype._forAllDescendants=function(e){!1!==e(this)&&g.forEach(this.children,function(t){return t._forAllDescendants(e)})},yt.prototype.collectCoupledDescendantPaths=function(e){return(e=e||{})[this.path]=this.active,this.active||g.forEach(this.children,function(t){t.collectCoupledDescendantPaths(e)}),e},Object.defineProperties(yt.prototype,gt);function vt(t,e,r,n,i){this._rootUrl=t,this._bridge=e,this._dispatcher=r,this._applySnapshot=n,this._pendingSnapshotCallbacks=[],this._throttled={processPendingSnapshots:this._processPendingSnapshots},this._prunePath=i,this._vue=new c({data:{root:void 0,queryHandlers:{}}}),this._vue._renderProxy=this._vue,this._nodeIndex=Object.create(null),Object.freeze(this),this._vue.$data.root=new yt(this,"/"),this._nodeIndex["/"]=this._root}var bt={_root:{configurable:!0},_queryHandlers:{configurable:!0}};bt._root.get=function(){return this._vue.$data.root},bt._queryHandlers.get=function(){return this._vue.$data.queryHandlers},vt.prototype.destroy=function(){g.forEach(this._queryHandlers,function(t){t.destroy()}),this._root.unlisten(),this._vue.$destroy()},vt.prototype.couple=function(t,e){return this._coupleSegments(v(t,!0),e)},vt.prototype._coupleSegments=function(t,e){for(var r,n=!e,i=!1,o=0,s=t;o<s.length;o+=1){var a=s[o],u=a?r.children&&r.children[a]:this._root;u||(u=new yt(this,("/"===r.path?"":r.path)+"/"+a,r),c.set(r.children,a,u),this._nodeIndex[u.path]=u),n=n||u.listening,i=i||u.ready,r=u}e?r.operations.push(e):r.queryCount++,n?e&&i&&this._dispatcher.markReady(e):r.listen()},vt.prototype.decouple=function(t,e){return this._decoupleSegments(v(t,!0),e)},vt.prototype._decoupleSegments=function(t,e){for(var r=[],n=0,i=t;n<i.length;n+=1){var o,s=i[n];if(!(o=s?o.children&&o.children[s]:this._root))break;r.push(o)}if(!o||!(e?o.count:o.queryCount))throw new Error("Path not coupled: "+(t.join("/")||"/"));if(e?g.pull(o.operations,e):o.queryCount--,e&&!o.count&&(o.listen(),o.listening&&o.unlisten()),!o.active){for(var a=r.length-1;0<a&&((o=r[a])!==this._root&&!o.active&&g.isEmpty(o.children));a--)c.delete(r[a-1].children,t[a]),o.ready=void 0,delete this._nodeIndex[o.path];var u=t.join("/")||"/";this._prunePath(u,this.findCoupledDescendantPaths(u))}},vt.prototype.subscribe=function(t,e,r){var n=this._queryHandlers[t.toString()];n||(n=new _t(this,t),c.set(this._queryHandlers,t.toString(),n)),n.attach(e,r)},vt.prototype.unsubscribe=function(t,e){var r=this._queryHandlers[t.toString()];r&&!r.detach(e)&&(r.destroy(),c.delete(this._queryHandlers,t.toString()))},vt.prototype.isTrunkCoupled=function(t){for(var e=0,r=v(t,!0);e<r.length;e+=1){var n,i=r[e];if(!(n=i?n.children&&n.children[i]:this._root))return!1;if(n.active)return!0}return!1},vt.prototype.findCoupledDescendantPaths=function(t){for(var e,r=0,n=v(t,!0);r<n.length;r+=1){var i,o=n[r];if((i=o?i.children&&i.children[o]:this._root)&&i.active)return(e={})[t]=i.active,e;if(!i)break}return i&&i.collectCoupledDescendantPaths()},vt.prototype.isSubtreeReady=function(t){var e,r;function n(t){return r=t.slice(1),""}for(;!(e=this._nodeIndex[t]);)t=t.replace(/\/[^/]*$/,n)||"/";for(r&&e.children;e;){if(e.ready)return!0;e=e.parent}return!1},vt.prototype.isQueryReady=function(t){var e=this._queryHandlers[t.toString()];return e&&e.ready},vt.prototype._queueSnapshotCallback=function(t){this._pendingSnapshotCallbacks.push(t),this._throttled.processPendingSnapshots.call(this)},vt.prototype._processPendingSnapshots=function(){for(var t=0,e=this._pendingSnapshotCallbacks;t<e.length;t+=1){(0,e[t])()}this._pendingSnapshotCallbacks.splice(0,1/0)},vt.prototype.throttleSnapshots=function(t){this._throttled.processPendingSnapshots=t?g.throttle(this._processPendingSnapshots,t):this._processPendingSnapshots},Object.defineProperties(vt.prototype,bt);function mt(t){this._ref=t,this._outcome=void 0,this._values=void 0}var wt={currentValue:{configurable:!0},outcome:{configurable:!0},values:{configurable:!0}};wt.currentValue.get=function(){return this._ref.value},wt.outcome.get=function(){return this._outcome},wt.values.get=function(){return this._values},mt.prototype._setOutcome=function(t){if(this._outcome)throw new Error("Transaction already resolved with "+this._outcome);this._outcome=t},mt.prototype.abort=function(){this._setOutcome("abort")},mt.prototype.cancel=function(){this._setOutcome("cancel")},mt.prototype.set=function(t){if(void 0===t)throw new Error("Invalid argument: undefined");this._setOutcome("set"),this._values={"":t}},mt.prototype.update=function(t){if(void 0===t)throw new Error("Invalid argument: undefined");if(g.isEmpty(t))return this.cancel();this._setOutcome("update"),this._values=t},Object.defineProperties(mt.prototype,wt);function $t(t,e,r,n){this._truss=t,this._rootUrl=e,this._bridge=r,this._dispatcher=n,this._firebasePropertyEditAllowed=!1,this._writeSerial=0,this._localWrites={},this._localWriteTimestamp=null,this._initialized=!1,this._modeler=new dt("dev"===t.constructor.VERSION),this._coupler=new vt(e,r,n,this._integrateSnapshot.bind(this),this._prune.bind(this)),this._vue=new c({data:{$root:void 0}}),Object.seal(this)}var kt,Pt,Ot={root:{configurable:!0},truss:{configurable:!0}};function Et(r,n){g.forEach(g.keys(n),function(t){if("/"===t.charAt(0)){if(!(t===r||"/"===r||g.startsWith(t,r+"/")&&t.length>r.length+1))throw new Error("Update item is not a descendant of target ref: "+t)}else{if(g.includes(t,"/"))throw new Error("Update item deep path must be absolute, taken from a reference: "+t);var e=y(r,p(t));if(n.hasOwnProperty(e))throw new Error("Update items overlap: "+t+" and "+e);n[e]=n[t],delete n[t]}});var o=g(n).keys().map(function(t){return y(t,"")}).sortBy("length").value();g.forEach(n,function(t,e){for(var r=0,n=o;r<n.length;r+=1){var i=n[r];if(i.length>e.length)break;if(e!==i&&g.startsWith(e,i))throw new Error("Update items overlap: "+i+" and "+e)}})}function jt(t,e){var r="/"===t?1:t.length+1;g.forEach(g.keys(e),function(t){e[t.slice(r)]=e[t],delete e[t]})}function Ct(t){if(!g.isObject(t))return t;var e={},r=t.$data;for(var n in r)r.hasOwnProperty(n)&&(e[p(n)]=Ct(r[n]));return e}Ot.root.get=function(){return this._vue.$data.$root||(this._vue.$data.$root=this._createObject("/"),this._fixObject(this._vue.$data.$root),this._completeCreateObject(this._vue.$data.$root),f.digest()),this._vue.$data.$root},Ot.truss.get=function(){return this._truss},$t.prototype.init=function(t){if(this._initialized)throw new Error("Data objects already created, too late to mount classes");this._initialized=!0,this._modeler.init(t,!this._vue.$data.$root);var e=[];this._plantPlaceholders(this.root,"/",void 0,e);for(var r=0,n=e;r<n.length;r+=1){var i=n[r];this._completeCreateObject(i)}},$t.prototype.destroy=function(){this._coupler.destroy(),this._modeler&&this._modeler.destroy(),this._vue.$destroy()},$t.prototype.connectReference=function(t,e){var r=this;this._checkHandle(t);var n=this._dispatcher.createOperation("read",e,t);return n._disconnect=this._disconnectReference.bind(this,t,n,void 0),this._dispatcher.begin(n).then(function(){n.running&&!n._disconnected&&(r._coupler.couple(t.path,n),n._coupled=!0)}).catch(g.noop),n._disconnect},$t.prototype._disconnectReference=function(t,e,r,n){e._disconnected||(e._disconnected=!0,r&&r(),e._coupled&&(this._coupler.decouple(t.path,e),e._coupled=!1),this._dispatcher.end(e,n).catch(g.noop))},$t.prototype.isReferenceReady=function(t){return this._checkHandle(t),this._coupler.isSubtreeReady(t.path)},$t.prototype.connectQuery=function(t,e,r){var n=this;this._checkHandle(t);var i=this._dispatcher.createOperation("read",r,t);return i._disconnect=this._disconnectQuery.bind(this,t,i),this._dispatcher.begin(i).then(function(){i.running&&!i._disconnected&&(n._coupler.subscribe(t,i,e),i._coupled=!0)}).catch(g.noop),i._disconnect},$t.prototype._disconnectQuery=function(t,e,r){e._disconnected||(e._disconnected=!0,e._coupled&&(this._coupler.unsubscribe(t,e),e._coupled=!1),this._dispatcher.end(e,r).catch(g.noop))},$t.prototype.isQueryReady=function(t){return this._coupler.isQueryReady(t)},$t.prototype._checkHandle=function(t){if(!t.belongsTo(this._truss))throw new Error("Reference belongs to another Truss instance")},$t.prototype.throttleRemoteDataUpdates=function(t){this._coupler.throttleSnapshots(t)},$t.prototype.update=function(e,t,r){var n=this;r=g.mapValues(r,_);var i=g.size(r);if(!i)return Promise.resolve();if("update"!==t&&"override"!==t||Et(e.path,r),this._applyLocalWrite(r,"override"===t))return Promise.resolve();var o,s,a=(o=r,g.forEach(o,function(t,e){var r="/"===e?[""]:v(e,!0);if(s){for(var n=0,i=Math.min(s.length,r.length);n<i&&s[n]===r[n];)n++;if(!(s=s.slice(0,n)).length)return!1}else s=r}),1===s.length?"/":s.join("/"));jt(a,r),a!==e.path&&(e=new C(e._tree,a,e._annotations));var u=this._rootUrl+a,c=this._writeSerial,h=1===i,l=h?r[""]:r;return this._dispatcher.execute("write",h?"set":"update",e,l,function(){return n._bridge[h?"set":"update"](u,l,c).catch(function(t){return t.immediateFailure?H(n._repair(e,r),function(){return Promise.reject(t)}):Promise.reject(t)})})},$t.prototype.commit=function(i,t){var o=this,e=0;t=L(t);var s=function(){if(25<=e++)return Promise.reject(new Error("Transaction needed too many retries, giving up"));var r,n=new mt(i);return c.nextTick().then(function(){return r=Ct(n.currentValue),t(n)}).then(function(){var t;if(!g.isEqual(r,Ct(n.currentValue)))return s();if("abort"===n.outcome)return n;var e=g.mapValues(n.values,_);switch(n.outcome){case"cancel":break;case"set":if(o._applyLocalWrite(((t={})[i.path]=e[""],t)))return Promise.resolve();break;case"update":if(Et(i.path,e),o._applyLocalWrite(e))return Promise.resolve();jt(i.path,e);break;default:throw new Error("Invalid transaction outcome: "+(n.outcome||"none"))}return o._bridge.transaction(o._rootUrl+i.path,r,e,o._writeSerial).then(function(t){return g.forEach(t.snapshots,function(t){return o._integrateSnapshot(t)}),t.committed?n:s()},function(t){return!t.immediateFailure||"set"!==n.outcome&&"update"!==n.outcome?Promise.reject(t):H(o._repair(i,e),function(){return Promise.reject(t)})})})};return this._truss.peek(i,function(){return o._dispatcher.execute("write","commit",i,void 0,s)})},$t.prototype._repair=function(t,e){var r=this,n=t.path,i=g(e).keys().flatMap(function(t){var e=n;return t&&(e=y(e,t)),g.keys(r._coupler.findCoupledDescendantPaths(e))}).value();return Promise.all(g.map(i,function(t){return r._bridge.once(r._rootUrl+t).then(function(t){r._integrateSnapshot(t)})}))},$t.prototype._applyLocalWrite=function(t,f){var d=this;this._writeSerial++,this._localWriteTimestamp=this._truss.now;var _=[],y=0;g.forEach(t,function(t,e){var r,n=d._modeler.isLocal(e,t);n&&y++;var i=n?((r={})[e]=!0,r):d._coupler.findCoupledDescendantPaths(e);if(!g.isEmpty(i)){var o=("/"===e?0:e.length)+1;for(var s in i){var a,u=s.slice(o),c=t;if(u&&null!=t)for(var h=0,l=v(u);h<l.length;h+=1){var p=l[h];if(void 0===(c=c.$data[p]))break}g.isNil(c)?d._prune(s):(a=g.last(v(s)),d._plantValue(s,a,c,d._scaffoldAncestors(s,!1,_),!1,f,n,_)),f||n||(d._localWrites[s]=d._writeSerial)}}});for(var e=0,r=_;e<r.length;e+=1){var n=r[e];this._completeCreateObject(n)}if(y&&y<g.size(t))throw new Error("Write on a mix of local and remote tree paths.");return f||!!y},$t.prototype._createObject=function(t,e){this._initialized||"/"===t||this.init();var r={$parent:{value:e,configurable:!0,enumerable:!0},$path:{value:t}};"/"===t&&(r.$truss={value:this._truss});var n=this._modeler.createObject(t,r);return Object.defineProperties(n,r),n},$t.prototype._fixObject=function(t){for(var e=0,r=Object.getOwnPropertyNames(t);e<r.length;e+=1){var n=r[e],i=Object.getOwnPropertyDescriptor(t,n);i.configurable&&i.enumerable&&(i.enumerable=!1,g.startsWith(n,"$")&&(i.configurable=!1),Object.defineProperty(t,n,i))}},$t.prototype._completeCreateObject=function(t){if(t.hasOwnProperty("$$initializers")){for(var e=0,r=t.$$initializers;e<r.length;e+=1){(0,r[e])(this._vue)}delete t.$$initializers}},$t.prototype._destroyObject=function(t){if(t&&t.$truss&&!t.$destroyed){this._modeler.destroyObject(t);for(var e=0,r=Object.getOwnPropertyNames(t.$data);e<r.length;e+=1){var n=r[e],i=t.$data[n];i&&i.$parent===t&&this._destroyObject(i)}}},$t.prototype._integrateSnapshot=function(r){var n=this;if(g.forEach(this._localWrites,function(t,e){r.writeSerial>=t&&delete n._localWrites[e]}),r.exists){var t=[],e=this._scaffoldAncestors(r.path,!0,t);e&&this._plantValue(r.path,r.key,r.value,e,!0,!1,!1,t);for(var i=0,o=t;i<o.length;i+=1){var s=o[i];this._completeCreateObject(s)}}else this._prune(r.path,null,!0)},$t.prototype._scaffoldAncestors=function(t,e,r){for(var n,i=g.dropRight(v(t,!0)),o="/",s=0;s<i.length;s++){var a=i[s],u=d(a),c=a?n.$data[u]:this.root;if(a&&(o+=("/"===o?"":"/")+a),c){if(e&&this._localWrites[o])return}else if(!(c=this._plantValue(o,u,{},n,e,!1,!1,r)))return;n=c}return n},$t.prototype._plantValue=function(n,t,i,e,o,r,s,a){var u=this;if(o&&g.isNil(i))throw new Error("Snapshot includes invalid value at "+n+": "+i);if(!o||!this._localWrites[n||"/"]){g.isEqual(i,S)&&(i=this._localWriteTimestamp);var c=e.$data[t];if(!g.isArray(i)&&!(s?g.isPlainObject(i):g.isObject(i)))return this._destroyObject(c),void(!s&&g.isNil(i)?this._deleteFirebaseProperty(e,t):this._setFirebaseProperty(e,t,i));var h=!1;return g.isObject(c)||(this._setFirebaseProperty(e,t,null),c=this._createObject(n,e),this._setFirebaseProperty(e,t,c,c.$hidden),this._fixObject(c),a.push(c),h=!0),r?Object.defineProperty(c,"$overridden",{get:g.constant(!0),configurable:!0}):c.$overridden&&delete c.$overridden,h&&this._plantPlaceholders(c,n,!0,a),g.forEach(i,function(t,e){u._plantValue(y(n,e),d(e),t,c,o,r,s,a)}),h?this._plantPlaceholders(c,n,!1,a):g.forEach(c.$data,function(t,e){var r=p(e);i.hasOwnProperty(r)||u._prune(y(n,r),null,o)}),c}},$t.prototype._plantPlaceholders=function(r,n,i,o){var s=this;this._modeler.forEachPlaceholderChild(n,function(t){var e;void 0!==i&&i!==!!t.hidden||(e=d(t.escapedKey),r.$data.hasOwnProperty(e)||s._plantValue(y(n,t.escapedKey),e,t.placeholder,r,!1,!1,!1,o))})},$t.prototype._prune=function(t,e,r){e=e||{};var n=this.getObject(t);void 0!==n&&(r&&this._avoidLocalWritePaths(t,e)||g.isEmpty(e)&&this._pruneAncestors(t,n)||!g.isObject(n)||this._pruneDescendants(n,e))},$t.prototype._avoidLocalWritePaths=function(t,e){for(var r in this._localWrites)if(this._localWrites.hasOwnProperty(r)){if(t===r||"/"===r||g.startsWith(t,r+"/"))return!0;if("/"===t||g.startsWith(r,t+"/"))for(var n=v(r,!0),i=n.length;0<i;i--){var o=n.slice(0,i).join("/"),s=i===n.length;if(e[o]||e[o]===s)break;if(e[o]=s,o===t)break}}},$t.prototype._pruneAncestors=function(t,e){for(var r,n=!1,i=e,o=t.replace(/\/[^/]+$/,function(t){return r=d(t.slice(1)),""});void 0!==i&&i!==this.root;){var s,a=i&&i.$parent||i===e&&this.getObject(o);this._modeler.isPlaceholder(i&&i.$path||t)||(s=n?null:[e],this._holdsConcreteData(i,s)||(n=!0,this._deleteFirebaseProperty(a,i&&i.$key||i===e&&r))),i=a}return n},$t.prototype._holdsConcreteData=function(t,e){var r=this;return!g.isNil(t)&&((!e||!g.includes(e,t))&&(!g.isObject(t)||!t.$truss||g.some(t.$data,function(t){return r._holdsConcreteData(t,e)})))},$t.prototype._pruneDescendants=function(o,s){var a=this;if(s[o.$path])return!0;o.$overridden&&delete o.$overridden;var u=!1;return g.forEach(o.$data,function(t,e){var r,n,i=!0;s[y(o.$path,p(e))]?r=!(i=!1):g.isNil(t)||!t.$truss||((n=a._modeler.isPlaceholder(t.$path))||g.has(s,t.$path))&&(r=a._pruneDescendants(t,s),i=!n&&!r),i&&a._deleteFirebaseProperty(o,e),u=u||r}),u},$t.prototype.getObject=function(t){for(var e=0,r=v(t);e<r.length;e+=1){var n,i=r[e];if(void 0===(n=i?n.$data[i]:this.root))return}return n},$t.prototype._getFirebasePropertyDescriptor=function(t,e,r){var n=Object.getOwnPropertyDescriptor(e,r);if(n){if(!n.enumerable){var i=e[r];if(!i||i.$parent!==t)throw new Error("Key conflict between Firebase and instance or computed properties at "+t.$path+": "+r)}if(!n.get||!n.set)throw new Error("Unbound property at "+t.$path+": "+r)}else if(r in e)throw new Error("Key conflict between Firebase and inherited property at "+t.$path+": "+r);return n},$t.prototype._setFirebaseProperty=function(t,e,r,n){var i=t.hasOwnProperty("$data")?t.$data:t,o=this._getFirebasePropertyDescriptor(t,i,e);if(o){if(n&&Object.defineProperty(i,e,{get:o.get,set:o.set,configurable:!0,enumerable:!1}),i[e]===r)return;this._firebasePropertyEditAllowed=!0,i[e]=r,this._firebasePropertyEditAllowed=!1}else c.set(i,e,r),o=Object.getOwnPropertyDescriptor(i,e),Object.defineProperty(i,e,{get:o.get,set:this._overwriteFirebaseProperty.bind(this,o,e),configurable:!0,enumerable:!n});f.digest()},$t.prototype._overwriteFirebaseProperty=function(t,e,r){if(!this._firebasePropertyEditAllowed){var n=new Error("Firebase data cannot be mutated directly: "+e);throw n.trussCode="firebase_overwrite",n}t.set.call(this,r)},$t.prototype._deleteFirebaseProperty=function(t,e){var r=t.hasOwnProperty("$data")?t.$data:t;this._getFirebasePropertyDescriptor(t,r,e),this._destroyObject(r[e]),c.delete(r,e),f.digest()},$t.prototype.checkVueObject=function(t,e){this._modeler.checkVueObject(t,e)},Object.defineProperties($t.prototype,Ot);function St(t){if(!kt)throw new Error("Truss worker not connected, please call Truss.connectWorker first");this._rootUrl=t.replace(/\/$/,""),this._keyGenerator=new tt,this._dispatcher=new Z(kt),this._vue=new c,kt.trackServer(this._rootUrl),this._tree=new $t(this,this._rootUrl,kt,this._dispatcher),this._metaTree=new nt(this._rootUrl,this._tree,kt,this._dispatcher),Object.freeze(this)}var Rt={},xt={meta:{configurable:!0},store:{configurable:!0},now:{configurable:!0},SERVER_TIMESTAMP:{configurable:!0},VERSION:{configurable:!0},FIREBASE_SDK_VERSION:{configurable:!0}},Tt={computedPropertyStats:{configurable:!0},worker:{configurable:!0}};return xt.meta.get=function(){return this._metaTree.root},xt.store.get=function(){return this._tree.root},St.prototype.mount=function(t){this._tree.init(t)},St.prototype.destroy=function(){this._vue.$destroy(),this._tree.destroy(),this._metaTree.destroy()},xt.now.get=function(){return Date.now()+this.meta.timeOffset},St.prototype.newKey=function(){return this._keyGenerator.generateUniqueKey(this.now)},St.prototype.authenticate=function(t){return this._metaTree.authenticate(t)},St.prototype.unauthenticate=function(){return this._metaTree.unauthenticate()},St.prototype.intercept=function(t,e){return this._dispatcher.intercept(t,e)},St.prototype.connect=function(t,e){return e||(e=t,t=void 0),e instanceof O&&(e={_:e}),new F(t,e,this._tree,"connect")},St.prototype.peek=function(a,u){var c,h,l=this;return u=L(u||g.identity),Q(Promise.resolve().then(function(){return new Promise(function(e,n){var r,i={},t=new F(i,{result:a},l._tree,"peek"),o=l.intercept("peek",{onFailure:function(r){!function t(e){if(e)return e instanceof O?r.target.isEqual(e):g.some(e,t)}(t.at)||(n(r.error),c())}}),s=l.observe(function(){return t.ready},function(t){t&&(s(),s=null,r=H(u(i.result),function(){f.digest(),r=null,c()}).then(function(t){e(t)},function(t){n(t)}))});c=function(){s&&(s(),s=null),o&&(o(),o=null),t&&(t.destroy(),t=null),r&&r.cancel&&r.cancel()},h=function(){n(new Error("Canceled")),c()}})}),h)},St.prototype.observe=function(t,n,i){var o,s=g.isObject(i&&i.precise),a=0;s&&(o=i.deep?g.cloneDeep(i.precise):g.clone(i.precise));var u=this._vue.$watch(t,function(t,e){if(i&&i.precise){var r=s?i.deep?g.defaultsDeep({},t,i.precise):g.defaults({},t,i.precise):i.deep?g.cloneDeep(t):g.clone(t);if(g.isEqual(r,o))return;o=r}a++,u?(n(t,e),f.digest()):Promise.resolve().then(function(){1<a||n(t,e)})},{immediate:!0,deep:i&&i.deep});return i&&i.scope&&i.scope.$on("$destroy",u),u},St.prototype.when=function(n,i){var o,s,a=this,t=Q(H(t=new Promise(function(e,t){var r=a.observe(n,function(t){t&&c.nextTick(function(){(t=n())&&(e(t),o())})});g.has(i,"timeout")&&(s=setTimeout(function(){s=null,t(new Error(i.timeoutMessage||"Timeout")),o()},i.timeout)),o=function(){r&&(r(),r=null),s&&(clearTimeout(s),s=null),t(new Error("Canceled"))}}),o),o);return i&&i.scope&&i.scope.$on("$destroy",function(){t.cancel()}),t},St.prototype.nextTick=function(){var r;return Q(new Promise(function(t,e){c.nextTick(t),r=function(){e(new Error("Canceled"))}}),r)},St.prototype.throttleRemoteDataUpdates=function(t){this._tree.throttleRemoteDataUpdates(t)},St.prototype.checkObjectsForRogueProperties=function(){this._tree.checkVueObject(this._tree.root,"/")},Tt.computedPropertyStats.get=function(){return W},St.connectWorker=function(t,e){if(kt)throw new Error("Worker already connected");if(g.isString(t)){var r=window.SharedWorker||window.Worker;if(!r)throw new Error("Browser does not implement Web Workers");t=new r(t)}return kt=new $(t),Pt&&kt.enableLogging(Pt),kt.init(t,e).then(function(t){var e=t.exposedFunctionNames,r=t.firebaseSdkVersion;Object.defineProperty(St,"FIREBASE_SDK_VERSION",{value:r});for(var n=0,i=e;n<i.length;n+=1){var o=i[n];St.worker[o]=kt.bindExposedFunction(o)}})},Tt.worker.get=function(){return Rt},St.preExpose=function(t){St.worker[t]=kt.bindExposedFunction(t)},St.bounceConnection=function(){return kt.bounceConnection()},St.suspend=function(){return kt.suspend()},St.debugPermissionDeniedErrors=function(t,e,r){return kt.debugPermissionDeniedErrors(t,e,r)},St.debounceAngularDigest=function(t){f.debounceDigest(t)},St.escapeKey=p,St.unescapeKey=d,St.enableLogging=function(t){Pt=t,kt&&kt.enableLogging(t)},xt.SERVER_TIMESTAMP.get=function(){return St.SERVER_TIMESTAMP},xt.VERSION.get=function(){return St.VERSION},xt.FIREBASE_SDK_VERSION.get=function(){return St.FIREBASE_SDK_VERSION},Object.defineProperties(St.prototype,xt),Object.defineProperties(St,Tt),Object.defineProperties(St,{SERVER_TIMESTAMP:{value:S},VERSION:{value:"4.1.2"},ComponentPlugin:{value:{install:function(t,e){if(c!==t)throw new Error("Multiple versions of Vue detected");if(!e.truss)throw new Error("Need to pass `truss` instance as an option to use the ComponentPlugin");var r={$truss:{value:e.truss},$destroyed:{get:function(){return this._isBeingDestroyed||this._isDestroyed}},$$touchThis:{value:function(){this.__ob__&&this.__ob__.dep.depend()}}},n=g(r).keys().union(g.keys(ot.prototype)).intersection(g.keys(c.prototype)).value();if(n.length)throw new Error("Truss extension properties conflict with Vue properties: "+n.join(", "));Object.defineProperties(c.prototype,r),T(ot,c),c.mixin({destroyed:function(){if(g.has(this,"$$finalizers"))for(var t=0,e=g.clone(this.$$finalizers);t<e.length;t+=1){(0,e[t])()}}})}}}}),f.defineModule(St),St});
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