!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(require("@firebase/app")):"function"==typeof define&&define.amd?define(["@firebase/app"],e):e(t.firebase)}(this,function(t){"use strict";try{(function(){t=t&&t.hasOwnProperty("default")?t.default:t;var e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(t,e){t.__proto__=e}||function(t,e){for(var n in e)e.hasOwnProperty(n)&&(t[n]=e[n])};function n(t,n){function r(){this.constructor=t}e(t,n),t.prototype=null===n?Object.create(n):(r.prototype=n.prototype,new r)}function r(t,e){var n,r,i,o,s={label:0,sent:function(){if(1&i[0])throw i[1];return i[1]},trys:[],ops:[]};return o={next:a(0),throw:a(1),return:a(2)},"function"==typeof Symbol&&(o[Symbol.iterator]=function(){return this}),o;function a(o){return function(a){return function(o){if(n)throw new TypeError("Generator is already executing.");for(;s;)try{if(n=1,r&&(i=r[2&o[0]?"return":o[0]?"throw":"next"])&&!(i=i.call(r,o[1])).done)return i;switch(r=0,i&&(o=[0,i.value]),o[0]){case 0:case 1:i=o;break;case 4:return s.label++,{value:o[1],done:!1};case 5:s.label++,r=o[1],o=[0];continue;case 7:o=s.ops.pop(),s.trys.pop();continue;default:if(!(i=(i=s.trys).length>0&&i[i.length-1])&&(6===o[0]||2===o[0])){s=0;continue}if(3===o[0]&&(!i||o[1]>i[0]&&o[1]<i[3])){s.label=o[1];break}if(6===o[0]&&s.label<i[1]){s.label=i[1],i=o;break}if(i&&s.label<i[2]){s.label=i[2],s.ops.push(o);break}i[2]&&s.ops.pop(),s.trys.pop();continue}o=e.call(t,s)}catch(t){o=[6,t],r=0}finally{n=i=0}if(5&o[0])throw o[1];return{value:o[0]?o[1]:void 0,done:!0}}([o,a])}}}var i=!1,o=!1,s="${JSCORE_VERSION}",a=function(t,e){if(!t)throw h(e)},h=function(t){return new Error("Firebase Database ("+s+") INTERNAL ASSERT FAILED: "+t)},u=function(t){for(var e=[],n=0,r=0;r<t.length;r++){var i=t.charCodeAt(r);i<128?e[n++]=i:i<2048?(e[n++]=i>>6|192,e[n++]=63&i|128):55296==(64512&i)&&r+1<t.length&&56320==(64512&t.charCodeAt(r+1))?(i=65536+((1023&i)<<10)+(1023&t.charCodeAt(++r)),e[n++]=i>>18|240,e[n++]=i>>12&63|128,e[n++]=i>>6&63|128,e[n++]=63&i|128):(e[n++]=i>>12|224,e[n++]=i>>6&63|128,e[n++]=63&i|128)}return e},l={byteToCharMap_:null,charToByteMap_:null,byteToCharMapWebSafe_:null,charToByteMapWebSafe_:null,ENCODED_VALS_BASE:"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",get ENCODED_VALS(){return this.ENCODED_VALS_BASE+"+/="},get ENCODED_VALS_WEBSAFE(){return this.ENCODED_VALS_BASE+"-_."},HAS_NATIVE_SUPPORT:"function"==typeof atob,encodeByteArray:function(t,e){if(!Array.isArray(t))throw Error("encodeByteArray takes an array as a parameter");this.init_();for(var n=e?this.byteToCharMapWebSafe_:this.byteToCharMap_,r=[],i=0;i<t.length;i+=3){var o=t[i],s=i+1<t.length,a=s?t[i+1]:0,h=i+2<t.length,u=h?t[i+2]:0,l=o>>2,c=(3&o)<<4|a>>4,p=(15&a)<<2|u>>6,d=63&u;h||(d=64,s||(p=64)),r.push(n[l],n[c],n[p],n[d])}return r.join("")},encodeString:function(t,e){return this.HAS_NATIVE_SUPPORT&&!e?btoa(t):this.encodeByteArray(u(t),e)},decodeString:function(t,e){return this.HAS_NATIVE_SUPPORT&&!e?atob(t):function(t){for(var e=[],n=0,r=0;n<t.length;){var i=t[n++];if(i<128)e[r++]=String.fromCharCode(i);else if(i>191&&i<224){var o=t[n++];e[r++]=String.fromCharCode((31&i)<<6|63&o)}else if(i>239&&i<365){var s=((7&i)<<18|(63&(o=t[n++]))<<12|(63&(a=t[n++]))<<6|63&t[n++])-65536;e[r++]=String.fromCharCode(55296+(s>>10)),e[r++]=String.fromCharCode(56320+(1023&s))}else{o=t[n++];var a=t[n++];e[r++]=String.fromCharCode((15&i)<<12|(63&o)<<6|63&a)}}return e.join("")}(this.decodeStringToByteArray(t,e))},decodeStringToByteArray:function(t,e){this.init_();for(var n=e?this.charToByteMapWebSafe_:this.charToByteMap_,r=[],i=0;i<t.length;){var o=n[t.charAt(i++)],s=i<t.length?n[t.charAt(i)]:0,a=++i<t.length?n[t.charAt(i)]:64,h=++i<t.length?n[t.charAt(i)]:64;if(++i,null==o||null==s||null==a||null==h)throw Error();var u=o<<2|s>>4;if(r.push(u),64!=a){var l=s<<4&240|a>>2;if(r.push(l),64!=h){var c=a<<6&192|h;r.push(c)}}}return r},init_:function(){if(!this.byteToCharMap_){this.byteToCharMap_={},this.charToByteMap_={},this.byteToCharMapWebSafe_={},this.charToByteMapWebSafe_={};for(var t=0;t<this.ENCODED_VALS.length;t++)this.byteToCharMap_[t]=this.ENCODED_VALS.charAt(t),this.charToByteMap_[this.byteToCharMap_[t]]=t,this.byteToCharMapWebSafe_[t]=this.ENCODED_VALS_WEBSAFE.charAt(t),this.charToByteMapWebSafe_[this.byteToCharMapWebSafe_[t]]=t,t>=this.ENCODED_VALS_BASE.length&&(this.charToByteMap_[this.ENCODED_VALS_WEBSAFE.charAt(t)]=t,this.charToByteMapWebSafe_[this.ENCODED_VALS.charAt(t)]=t)}}},c=function(t){try{return l.decodeString(t,!0)}catch(t){console.error("base64Decode failed: ",t)}return null};function p(t){return function t(e,n){if(!(n instanceof Object))return n;switch(n.constructor){case Date:var r=n;return new Date(r.getTime());case Object:void 0===e&&(e={});break;case Array:e=[];break;default:return n}for(var i in n)n.hasOwnProperty(i)&&(e[i]=t(e[i],n[i]));return e}(void 0,t)}var d=function(){function t(){var t=this;this.promise=new Promise(function(e,n){t.resolve=e,t.reject=n})}return t.prototype.wrapCallback=function(t){var e=this;return function(n,r){n?e.reject(n):e.resolve(r),"function"==typeof t&&(e.promise.catch(function(){}),1===t.length?t(n):t(n,r))}},t}(),f=function(){return"undefined"!=typeof window&&!!(window.cordova||window.phonegap||window.PhoneGap)&&/ios|iphone|ipod|ipad|android|blackberry|iemobile/i.test("undefined"!=typeof navigator&&"string"==typeof navigator.userAgent?navigator.userAgent:"")},_=function(){return!0===i||!0===o},y="FirebaseError",v=Error.captureStackTrace,g=function(){return function(t,e){if(this.code=t,this.message=e,v)v(this,m.prototype.create);else try{throw Error.apply(this,arguments)}catch(t){this.name=y,Object.defineProperty(this,"stack",{get:function(){return t.stack}})}}}();g.prototype=Object.create(Error.prototype),g.prototype.constructor=g,g.prototype.name=y;var m=function(){function t(t,e,n){this.service=t,this.serviceName=e,this.errors=n,this.pattern=/\{\$([^}]+)}/g}return t.prototype.create=function(t,e){void 0===e&&(e={});var n,r=this.errors[t],i=this.service+"/"+t;n=void 0===r?"Error":r.replace(this.pattern,function(t,n){var r=e[n];return void 0!==r?r.toString():"<"+n+"?>"}),n=this.serviceName+": "+n+" ("+i+").";var o=new g(i,n);for(var s in e)e.hasOwnProperty(s)&&"_"!==s.slice(-1)&&(o[s]=e[s]);return o},t}();function C(t){return JSON.parse(t)}function E(t){return JSON.stringify(t)}var w=function(t){var e={},n={},r={},i="";try{var o=t.split(".");e=C(c(o[0])||""),n=C(c(o[1])||""),i=o[2],r=n.d||{},delete n.d}catch(t){}return{header:e,claims:n,data:r,signature:i}},b=function(t,e){return Object.prototype.hasOwnProperty.call(t,e)},S=function(t,e){if(Object.prototype.hasOwnProperty.call(t,e))return t[e]},T=function(t,e){for(var n in t)Object.prototype.hasOwnProperty.call(t,n)&&e(n,t[n])},I=function(t){return e={},T(t,function(t,n){e[t]=n}),e;var e},N=function(t){for(var e in t)return!1;return!0},R=function(t){var e=0;for(var n in t)e++;return e},P=function(t,e,n){var r={};for(var i in t)r[i]=e.call(n,t[i],i,t);return r},D=function(t,e,n){for(var r in t)if(e.call(n,t[r],r,t))return r},O=function(t){for(var e in t)return e},k=function(t){function e(){var e=t.call(this)||this;e.chain_=[],e.buf_=[],e.W_=[],e.pad_=[],e.inbuf_=0,e.total_=0,e.blockSize=64,e.pad_[0]=128;for(var n=1;n<e.blockSize;++n)e.pad_[n]=0;return e.reset(),e}return n(e,t),e.prototype.reset=function(){this.chain_[0]=1732584193,this.chain_[1]=4023233417,this.chain_[2]=2562383102,this.chain_[3]=271733878,this.chain_[4]=3285377520,this.inbuf_=0,this.total_=0},e.prototype.compress_=function(t,e){e||(e=0);var n=this.W_;if("string"==typeof t)for(var r=0;r<16;r++)n[r]=t.charCodeAt(e)<<24|t.charCodeAt(e+1)<<16|t.charCodeAt(e+2)<<8|t.charCodeAt(e+3),e+=4;else for(r=0;r<16;r++)n[r]=t[e]<<24|t[e+1]<<16|t[e+2]<<8|t[e+3],e+=4;for(r=16;r<80;r++){var i=n[r-3]^n[r-8]^n[r-14]^n[r-16];n[r]=4294967295&(i<<1|i>>>31)}var o,s,a=this.chain_[0],h=this.chain_[1],u=this.chain_[2],l=this.chain_[3],c=this.chain_[4];for(r=0;r<80;r++){r<40?r<20?(o=l^h&(u^l),s=1518500249):(o=h^u^l,s=1859775393):r<60?(o=h&u|l&(h|u),s=2400959708):(o=h^u^l,s=3395469782);i=(a<<5|a>>>27)+o+c+s+n[r]&4294967295;c=l,l=u,u=4294967295&(h<<30|h>>>2),h=a,a=i}this.chain_[0]=this.chain_[0]+a&4294967295,this.chain_[1]=this.chain_[1]+h&4294967295,this.chain_[2]=this.chain_[2]+u&4294967295,this.chain_[3]=this.chain_[3]+l&4294967295,this.chain_[4]=this.chain_[4]+c&4294967295},e.prototype.update=function(t,e){if(null!=t){void 0===e&&(e=t.length);for(var n=e-this.blockSize,r=0,i=this.buf_,o=this.inbuf_;r<e;){if(0==o)for(;r<=n;)this.compress_(t,r),r+=this.blockSize;if("string"==typeof t){for(;r<e;)if(i[o]=t.charCodeAt(r),++r,++o==this.blockSize){this.compress_(i),o=0;break}}else for(;r<e;)if(i[o]=t[r],++r,++o==this.blockSize){this.compress_(i),o=0;break}}this.inbuf_=o,this.total_+=e}},e.prototype.digest=function(){var t=[],e=8*this.total_;this.inbuf_<56?this.update(this.pad_,56-this.inbuf_):this.update(this.pad_,this.blockSize-(this.inbuf_-56));for(var n=this.blockSize-1;n>=56;n--)this.buf_[n]=255&e,e/=256;this.compress_(this.buf_);var r=0;for(n=0;n<5;n++)for(var i=24;i>=0;i-=8)t[r]=this.chain_[n]>>i&255,++r;return t},e}(function(){return function(){this.blockSize=-1}}()),x=function(t,e,n,r){var i;if(r<e?i="at least "+e:r>n&&(i=0===n?"none":"no more than "+n),i)throw new Error(t+" failed: Was called with "+r+(1===r?" argument.":" arguments.")+" Expects "+i+".")};function F(t,e,n){var r="";switch(e){case 1:r=n?"first":"First";break;case 2:r=n?"second":"Second";break;case 3:r=n?"third":"Third";break;case 4:r=n?"fourth":"Fourth";break;default:throw new Error("errorPrefix called with argumentNumber > 4.  Need to update it?")}var i=t+" failed: ";return i+=r+" argument "}function A(t,e,n,r){if((!r||n)&&"function"!=typeof n)throw new Error(F(t,e,r)+"must be a valid function.")}function L(t,e,n,r){if((!r||n)&&("object"!=typeof n||null===n))throw new Error(F(t,e,r)+"must be a valid context object.")}var M,W=function(t){for(var e=0,n=0;n<t.length;n++){var r=t.charCodeAt(n);r<128?e++:r<2048?e+=2:r>=55296&&r<=56319?(e+=4,n++):e+=3}return e};!function(t){t[t.DEBUG=0]="DEBUG",t[t.VERBOSE=1]="VERBOSE",t[t.INFO=2]="INFO",t[t.WARN=3]="WARN",t[t.ERROR=4]="ERROR",t[t.SILENT=5]="SILENT"}(M||(M={}));var q,Q=M.INFO,U=function(t,e){for(var n=[],r=2;r<arguments.length;r++)n[r-2]=arguments[r];if(!(e<t.logLevel)){var i=(new Date).toISOString();switch(e){case M.DEBUG:case M.VERBOSE:console.log.apply(console,["["+i+"]  "+t.name+":"].concat(n));break;case M.INFO:console.info.apply(console,["["+i+"]  "+t.name+":"].concat(n));break;case M.WARN:console.warn.apply(console,["["+i+"]  "+t.name+":"].concat(n));break;case M.ERROR:console.error.apply(console,["["+i+"]  "+t.name+":"].concat(n));break;default:throw new Error("Attempted to log a message with an invalid logType (value: "+e+")")}}},V=function(){function t(t){this.name=t,this._logLevel=Q,this._logHandler=U}return Object.defineProperty(t.prototype,"logLevel",{get:function(){return this._logLevel},set:function(t){if(!(t in M))throw new TypeError("Invalid value assigned to `logLevel`");this._logLevel=t},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"logHandler",{get:function(){return this._logHandler},set:function(t){if("function"!=typeof t)throw new TypeError("Value assigned to `logHandler` must be a function");this._logHandler=t},enumerable:!0,configurable:!0}),t.prototype.debug=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];this._logHandler.apply(this,[this,M.DEBUG].concat(t))},t.prototype.log=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];this._logHandler.apply(this,[this,M.VERBOSE].concat(t))},t.prototype.info=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];this._logHandler.apply(this,[this,M.INFO].concat(t))},t.prototype.warn=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];this._logHandler.apply(this,[this,M.WARN].concat(t))},t.prototype.error=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];this._logHandler.apply(this,[this,M.ERROR].concat(t))},t}(),H=function(){function t(t){this.domStorage_=t,this.prefix_="firebase:"}return t.prototype.set=function(t,e){null==e?this.domStorage_.removeItem(this.prefixedName_(t)):this.domStorage_.setItem(this.prefixedName_(t),E(e))},t.prototype.get=function(t){var e=this.domStorage_.getItem(this.prefixedName_(t));return null==e?null:C(e)},t.prototype.remove=function(t){this.domStorage_.removeItem(this.prefixedName_(t))},t.prototype.prefixedName_=function(t){return this.prefix_+t},t.prototype.toString=function(){return this.domStorage_.toString()},t}(),B=function(){function t(){this.cache_={},this.isInMemoryStorage=!0}return t.prototype.set=function(t,e){null==e?delete this.cache_[t]:this.cache_[t]=e},t.prototype.get=function(t){return b(this.cache_,t)?this.cache_[t]:null},t.prototype.remove=function(t){delete this.cache_[t]},t}(),j=function(t){try{if("undefined"!=typeof window&&void 0!==window[t]){var e=window[t];return e.setItem("firebase:sentinel","cache"),e.removeItem("firebase:sentinel"),new H(e)}}catch(t){}return new B},K=j("localStorage"),Y=j("sessionStorage"),z=new V("@firebase/database"),G=(q=1,function(){return q++}),X=function(t){var e=function(t){for(var e=[],n=0,r=0;r<t.length;r++){var i=t.charCodeAt(r);if(i>=55296&&i<=56319){var o=i-55296;a(++r<t.length,"Surrogate pair missing trail surrogate."),i=65536+(o<<10)+(t.charCodeAt(r)-56320)}i<128?e[n++]=i:i<2048?(e[n++]=i>>6|192,e[n++]=63&i|128):i<65536?(e[n++]=i>>12|224,e[n++]=i>>6&63|128,e[n++]=63&i|128):(e[n++]=i>>18|240,e[n++]=i>>12&63|128,e[n++]=i>>6&63|128,e[n++]=63&i|128)}return e}(t),n=new k;n.update(e);var r=n.digest();return l.encodeByteArray(r)},$=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];for(var n="",r=0;r<t.length;r++)Array.isArray(t[r])||t[r]&&"object"==typeof t[r]&&"number"==typeof t[r].length?n+=$.apply(null,t[r]):"object"==typeof t[r]?n+=E(t[r]):n+=t[r],n+=" ";return n},J=null,Z=!0,tt=function(t,e){a(!e||!0===t||!1===t,"Can't turn on custom loggers persistently."),!0===t?(z.logLevel=M.VERBOSE,J=z.log.bind(z),e&&Y.set("logging_enabled",!0)):"function"==typeof t?J=t:(J=null,Y.remove("logging_enabled"))},et=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];if(!0===Z&&(Z=!1,null===J&&!0===Y.get("logging_enabled")&&tt(!0)),J){var n=$.apply(null,t);J(n)}},nt=function(t){return function(){for(var e=[],n=0;n<arguments.length;n++)e[n]=arguments[n];et.apply(void 0,[t].concat(e))}},rt=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];var n="FIREBASE INTERNAL ERROR: "+$.apply(void 0,t);z.error(n)},it=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];var n="FIREBASE FATAL ERROR: "+$.apply(void 0,t);throw z.error(n),new Error(n)},ot=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];var n="FIREBASE WARNING: "+$.apply(void 0,t);z.warn(n)},st=function(t){return"number"==typeof t&&(t!=t||t==Number.POSITIVE_INFINITY||t==Number.NEGATIVE_INFINITY)},at="[MIN_NAME]",ht="[MAX_NAME]",ut=function(t,e){if(t===e)return 0;if(t===at||e===ht)return-1;if(e===at||t===ht)return 1;var n=vt(t),r=vt(e);return null!==n?null!==r?n-r==0?t.length-e.length:n-r:-1:null!==r?1:t<e?-1:1},lt=function(t,e){return t===e?0:t<e?-1:1},ct=function(t,e){if(e&&t in e)return e[t];throw new Error("Missing required key ("+t+") in object: "+E(e))},pt=function(t){if("object"!=typeof t||null===t)return E(t);var e=[];for(var n in t)e.push(n);e.sort();for(var r="{",i=0;i<e.length;i++)0!==i&&(r+=","),r+=E(e[i]),r+=":",r+=pt(t[e[i]]);return r+="}"},dt=function(t,e){var n=t.length;if(n<=e)return[t];for(var r=[],i=0;i<n;i+=e)i+e>n?r.push(t.substring(i,n)):r.push(t.substring(i,i+e));return r},ft=function(t,e){if(Array.isArray(t))for(var n=0;n<t.length;++n)e(n,t[n]);else T(t,function(t,n){return e(n,t)})},_t=function(t){a(!st(t),"Invalid JSON number");var e,n,r,i,o,s,h;for(0===t?(n=0,r=0,e=1/t==-1/0?1:0):(e=t<0,(t=Math.abs(t))>=Math.pow(2,-1022)?(n=(i=Math.min(Math.floor(Math.log(t)/Math.LN2),1023))+1023,r=Math.round(t*Math.pow(2,52-i)-Math.pow(2,52))):(n=0,r=Math.round(t/Math.pow(2,-1074)))),s=[],o=52;o;o-=1)s.push(r%2?1:0),r=Math.floor(r/2);for(o=11;o;o-=1)s.push(n%2?1:0),n=Math.floor(n/2);s.push(e?1:0),s.reverse(),h=s.join("");var u="";for(o=0;o<64;o+=8){var l=parseInt(h.substr(o,8),2).toString(16);1===l.length&&(l="0"+l),u+=l}return u.toLowerCase()},yt=new RegExp("^-?\\d{1,10}$"),vt=function(t){if(yt.test(t)){var e=Number(t);if(e>=-2147483648&&e<=2147483647)return e}return null},gt=function(t){try{t()}catch(t){setTimeout(function(){var e=t.stack||"";throw ot("Exception was thrown by user callback.",e),t},Math.floor(0))}},mt=function(){return("object"==typeof window&&window.navigator&&window.navigator.userAgent||"").search(/googlebot|google webmaster tools|bingbot|yahoo! slurp|baiduspider|yandexbot|duckduckbot/i)>=0},Ct=function(t,e){var n=setTimeout(t,e);return"object"==typeof n&&n.unref&&n.unref(),n},Et=function(){function t(t,e){if(void 0===e){this.pieces_=t.split("/");for(var n=0,r=0;r<this.pieces_.length;r++)this.pieces_[r].length>0&&(this.pieces_[n]=this.pieces_[r],n++);this.pieces_.length=n,this.pieceNum_=0}else this.pieces_=t,this.pieceNum_=e}return Object.defineProperty(t,"Empty",{get:function(){return new t("")},enumerable:!0,configurable:!0}),t.prototype.getFront=function(){return this.pieceNum_>=this.pieces_.length?null:this.pieces_[this.pieceNum_]},t.prototype.getLength=function(){return this.pieces_.length-this.pieceNum_},t.prototype.popFront=function(){var e=this.pieceNum_;return e<this.pieces_.length&&e++,new t(this.pieces_,e)},t.prototype.getBack=function(){return this.pieceNum_<this.pieces_.length?this.pieces_[this.pieces_.length-1]:null},t.prototype.toString=function(){for(var t="",e=this.pieceNum_;e<this.pieces_.length;e++)""!==this.pieces_[e]&&(t+="/"+this.pieces_[e]);return t||"/"},t.prototype.toUrlEncodedString=function(){for(var t="",e=this.pieceNum_;e<this.pieces_.length;e++)""!==this.pieces_[e]&&(t+="/"+encodeURIComponent(String(this.pieces_[e])));return t||"/"},t.prototype.slice=function(t){return void 0===t&&(t=0),this.pieces_.slice(this.pieceNum_+t)},t.prototype.parent=function(){if(this.pieceNum_>=this.pieces_.length)return null;for(var e=[],n=this.pieceNum_;n<this.pieces_.length-1;n++)e.push(this.pieces_[n]);return new t(e,0)},t.prototype.child=function(e){for(var n=[],r=this.pieceNum_;r<this.pieces_.length;r++)n.push(this.pieces_[r]);if(e instanceof t)for(r=e.pieceNum_;r<e.pieces_.length;r++)n.push(e.pieces_[r]);else{var i=e.split("/");for(r=0;r<i.length;r++)i[r].length>0&&n.push(i[r])}return new t(n,0)},t.prototype.isEmpty=function(){return this.pieceNum_>=this.pieces_.length},t.relativePath=function(e,n){var r=e.getFront(),i=n.getFront();if(null===r)return n;if(r===i)return t.relativePath(e.popFront(),n.popFront());throw new Error("INTERNAL ERROR: innerPath ("+n+") is not within outerPath ("+e+")")},t.comparePaths=function(t,e){for(var n=t.slice(),r=e.slice(),i=0;i<n.length&&i<r.length;i++){var o=ut(n[i],r[i]);if(0!==o)return o}return n.length===r.length?0:n.length<r.length?-1:1},t.prototype.equals=function(t){if(this.getLength()!==t.getLength())return!1;for(var e=this.pieceNum_,n=t.pieceNum_;e<=this.pieces_.length;e++,n++)if(this.pieces_[e]!==t.pieces_[n])return!1;return!0},t.prototype.contains=function(t){var e=this.pieceNum_,n=t.pieceNum_;if(this.getLength()>t.getLength())return!1;for(;e<this.pieces_.length;){if(this.pieces_[e]!==t.pieces_[n])return!1;++e,++n}return!0},t}(),wt=function(){function t(t,e){this.errorPrefix_=e,this.parts_=t.slice(),this.byteLength_=Math.max(1,this.parts_.length);for(var n=0;n<this.parts_.length;n++)this.byteLength_+=W(this.parts_[n]);this.checkValid_()}return Object.defineProperty(t,"MAX_PATH_DEPTH",{get:function(){return 32},enumerable:!0,configurable:!0}),Object.defineProperty(t,"MAX_PATH_LENGTH_BYTES",{get:function(){return 768},enumerable:!0,configurable:!0}),t.prototype.push=function(t){this.parts_.length>0&&(this.byteLength_+=1),this.parts_.push(t),this.byteLength_+=W(t),this.checkValid_()},t.prototype.pop=function(){var t=this.parts_.pop();this.byteLength_-=W(t),this.parts_.length>0&&(this.byteLength_-=1)},t.prototype.checkValid_=function(){if(this.byteLength_>t.MAX_PATH_LENGTH_BYTES)throw new Error(this.errorPrefix_+"has a key path longer than "+t.MAX_PATH_LENGTH_BYTES+" bytes ("+this.byteLength_+").");if(this.parts_.length>t.MAX_PATH_DEPTH)throw new Error(this.errorPrefix_+"path specified exceeds the maximum depth that can be written ("+t.MAX_PATH_DEPTH+") or object contains a cycle "+this.toErrorString())},t.prototype.toErrorString=function(){return 0==this.parts_.length?"":"in property '"+this.parts_.join(".")+"'"},t}(),bt="long_polling",St=function(){function t(t,e,n,r,i){void 0===i&&(i=""),this.secure=e,this.namespace=n,this.webSocketOnly=r,this.persistenceKey=i,this.host=t.toLowerCase(),this.domain=this.host.substr(this.host.indexOf(".")+1),this.internalHost=K.get("host:"+t)||this.host}return t.prototype.needsQueryParam=function(){return this.host!==this.internalHost||this.isCustomHost()},t.prototype.isCacheableHost=function(){return"s-"===this.internalHost.substr(0,2)},t.prototype.isDemoHost=function(){return"firebaseio-demo.com"===this.domain},t.prototype.isCustomHost=function(){return"firebaseio.com"!==this.domain&&"firebaseio-demo.com"!==this.domain},t.prototype.updateHost=function(t){t!==this.internalHost&&(this.internalHost=t,this.isCacheableHost()&&K.set("host:"+this.host,this.internalHost))},t.prototype.connectionURL=function(t,e){var n;if(a("string"==typeof t,"typeof type must == string"),a("object"==typeof e,"typeof params must == object"),"websocket"===t)n=(this.secure?"wss://":"ws://")+this.internalHost+"/.ws?";else{if(t!==bt)throw new Error("Unknown connection type: "+t);n=(this.secure?"https://":"http://")+this.internalHost+"/.lp?"}this.needsQueryParam()&&(e.ns=this.namespace);var r=[];return T(e,function(t,e){r.push(t+"="+e)}),n+r.join("&")},t.prototype.toString=function(){var t=this.toURLString();return this.persistenceKey&&(t+="<"+this.persistenceKey+">"),t},t.prototype.toURLString=function(){return(this.secure?"https://":"http://")+this.host},t}();var Tt,It,Nt,Rt,Pt,Dt=function(t){var e=Ot(t),n=e.subdomain;"firebase"===e.domain&&it(e.host+" is no longer supported. Please use <YOUR FIREBASE>.firebaseio.com instead"),n&&"undefined"!=n||"localhost"===e.domain||it("Cannot parse Firebase url. Please use https://<YOUR FIREBASE>.firebaseio.com"),e.secure||"undefined"!=typeof window&&window.location&&window.location.protocol&&-1!==window.location.protocol.indexOf("https:")&&ot("Insecure Firebase access from a secure page. Please use https in calls to new Firebase().");var r="ws"===e.scheme||"wss"===e.scheme;return{repoInfo:new St(e.host,e.secure,n,r),path:new Et(e.pathString)}},Ot=function(t){var e="",n="",r="",i="",o=!0,s="https",a=443;if("string"==typeof t){var h=t.indexOf("//");h>=0&&(s=t.substring(0,h-1),t=t.substring(h+2));var u=t.indexOf("/");-1===u&&(u=t.length);var l=t.indexOf("?");-1===l&&(l=t.length),e=t.substring(0,Math.min(u,l)),u<l&&(i=function(t){for(var e="",n=t.split("/"),r=0;r<n.length;r++)if(n[r].length>0){var i=n[r];try{i=decodeURIComponent(i.replace(/\+/g," "))}catch(t){}e+="/"+i}return e}(t.substring(u,l)));var c=function(t){var e={};"?"===t.charAt(0)&&(t=t.substring(1));for(var n=0,r=t.split("&");n<r.length;n++){var i=r[n];if(0!==i.length){var o=i.split("=");2===o.length?e[decodeURIComponent(o[0])]=decodeURIComponent(o[1]):ot("Invalid query segment '"+i+"' in query '"+t+"'")}}return e}(t.substring(Math.min(t.length,l)));(h=e.indexOf(":"))>=0?(o="https"===s||"wss"===s,a=parseInt(e.substring(h+1),10)):h=t.length;var p=e.split(".");3===p.length?(n=p[1],r=p[0].toLowerCase()):2===p.length?n=p[0]:"localhost"===p[0].slice(0,h).toLowerCase()&&(n="localhost"),""===r&&"ns"in c&&(r=c.ns)}return{host:e,port:a,domain:n,subdomain:r,secure:o,scheme:s,pathString:i}},kt=/[\[\].#$\/\u0000-\u001F\u007F]/,xt=/[\[\].#$\u0000-\u001F\u007F]/,Ft=function(t){return"string"==typeof t&&0!==t.length&&!kt.test(t)},At=function(t){return"string"==typeof t&&0!==t.length&&!xt.test(t)},Lt=function(t){return null===t||"string"==typeof t||"number"==typeof t&&!st(t)||t&&"object"==typeof t&&b(t,".sv")},Mt=function(t,e,n,r,i){i&&void 0===n||Wt(F(t,e,i),n,r)},Wt=function(t,e,n){var r=n instanceof Et?new wt(n,t):n;if(void 0===e)throw new Error(t+"contains undefined "+r.toErrorString());if("function"==typeof e)throw new Error(t+"contains a function "+r.toErrorString()+" with contents = "+e.toString());if(st(e))throw new Error(t+"contains "+e.toString()+" "+r.toErrorString());if("string"==typeof e&&e.length>10485760/3&&W(e)>10485760)throw new Error(t+"contains a string greater than 10485760 utf8 bytes "+r.toErrorString()+" ('"+e.substring(0,50)+"...')");if(e&&"object"==typeof e){var i=!1,o=!1;if(T(e,function(e,n){if(".value"===e)i=!0;else if(".priority"!==e&&".sv"!==e&&(o=!0,!Ft(e)))throw new Error(t+" contains an invalid key ("+e+") "+r.toErrorString()+'.  Keys must be non-empty strings and can\'t contain ".", "#", "$", "/", "[", or "]"');r.push(e),Wt(t,n,r),r.pop()}),i&&o)throw new Error(t+' contains ".value" child '+r.toErrorString()+" in addition to actual children.")}},qt=function(t,e,n,r,i){if(!i||void 0!==n){var o=F(t,e,i);if(!n||"object"!=typeof n||Array.isArray(n))throw new Error(o+" must be an object containing the children to replace.");var s=[];T(n,function(t,e){var n=new Et(t);if(Wt(o,e,r.child(n)),".priority"===n.getBack()&&!Lt(e))throw new Error(o+"contains an invalid value for '"+n.toString()+"', which must be a valid Firebase priority (a string, finite number, server value, or null).");s.push(n)}),function(t,e){var n,r;for(n=0;n<e.length;n++)for(var i=(r=e[n]).slice(),o=0;o<i.length;o++)if(".priority"===i[o]&&o===i.length-1);else if(!Ft(i[o]))throw new Error(t+"contains an invalid key ("+i[o]+") in path "+r.toString()+'. Keys must be non-empty strings and can\'t contain ".", "#", "$", "/", "[", or "]"');e.sort(Et.comparePaths);var s=null;for(n=0;n<e.length;n++){if(r=e[n],null!==s&&s.contains(r))throw new Error(t+"contains a path "+s.toString()+" that is ancestor of another path "+r.toString());s=r}}(o,s)}},Qt=function(t,e,n,r){if(!r||void 0!==n){if(st(n))throw new Error(F(t,e,r)+"is "+n.toString()+", but must be a valid Firebase priority (a string, finite number, server value, or null).");if(!Lt(n))throw new Error(F(t,e,r)+"must be a valid Firebase priority (a string, finite number, server value, or null).")}},Ut=function(t,e,n,r){if(!r||void 0!==n)switch(n){case"value":case"child_added":case"child_removed":case"child_changed":case"child_moved":break;default:throw new Error(F(t,e,r)+'must be a valid event type = "value", "child_added", "child_removed", "child_changed", or "child_moved".')}},Vt=function(t,e,n,r){if(!(r&&void 0===n||Ft(n)))throw new Error(F(t,e,r)+'was an invalid key = "'+n+'".  Firebase keys must be non-empty strings and can\'t contain ".", "#", "$", "/", "[", or "]").')},Ht=function(t,e,n,r){if(!(r&&void 0===n||At(n)))throw new Error(F(t,e,r)+'was an invalid path = "'+n+'". Paths must be non-empty strings and can\'t contain ".", "#", "$", "[", or "]"')},Bt=function(t,e){if(".info"===e.getFront())throw new Error(t+" failed = Can't modify data under /.info/")},jt=function(t,e,n){var r=n.path.toString();if("string"!=typeof n.repoInfo.host||0===n.repoInfo.host.length||!Ft(n.repoInfo.namespace)&&"localhost"!==n.repoInfo.host.split(":")[0]||0!==r.length&&!function(t){return t&&(t=t.replace(/^\/*\.info(\/|$)/,"/")),At(t)}(r))throw new Error(F(t,e,!1)+'must be a valid firebase URL and the path can\'t contain ".", "#", "$", "[", or "]".')},Kt=function(){function t(t,e){this.repo_=t,this.path_=e}return t.prototype.cancel=function(t){x("OnDisconnect.cancel",0,1,arguments.length),A("OnDisconnect.cancel",1,t,!0);var e=new d;return this.repo_.onDisconnectCancel(this.path_,e.wrapCallback(t)),e.promise},t.prototype.remove=function(t){x("OnDisconnect.remove",0,1,arguments.length),Bt("OnDisconnect.remove",this.path_),A("OnDisconnect.remove",1,t,!0);var e=new d;return this.repo_.onDisconnectSet(this.path_,null,e.wrapCallback(t)),e.promise},t.prototype.set=function(t,e){x("OnDisconnect.set",1,2,arguments.length),Bt("OnDisconnect.set",this.path_),Mt("OnDisconnect.set",1,t,this.path_,!1),A("OnDisconnect.set",2,e,!0);var n=new d;return this.repo_.onDisconnectSet(this.path_,t,n.wrapCallback(e)),n.promise},t.prototype.setWithPriority=function(t,e,n){x("OnDisconnect.setWithPriority",2,3,arguments.length),Bt("OnDisconnect.setWithPriority",this.path_),Mt("OnDisconnect.setWithPriority",1,t,this.path_,!1),Qt("OnDisconnect.setWithPriority",2,e,!1),A("OnDisconnect.setWithPriority",3,n,!0);var r=new d;return this.repo_.onDisconnectSetWithPriority(this.path_,t,e,r.wrapCallback(n)),r.promise},t.prototype.update=function(t,e){if(x("OnDisconnect.update",1,2,arguments.length),Bt("OnDisconnect.update",this.path_),Array.isArray(t)){for(var n={},r=0;r<t.length;++r)n[""+r]=t[r];t=n,ot("Passing an Array to firebase.database.onDisconnect().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.")}qt("OnDisconnect.update",1,t,this.path_,!1),A("OnDisconnect.update",2,e,!0);var i=new d;return this.repo_.onDisconnectUpdate(this.path_,t,i.wrapCallback(e)),i.promise},t}(),Yt=function(){function t(t,e){this.committed=t,this.snapshot=e}return t.prototype.toJSON=function(){return x("TransactionResult.toJSON",0,1,arguments.length),{committed:this.committed,snapshot:this.snapshot.toJSON()}},t}(),zt=(Tt="-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz",It=0,Nt=[],function(t){var e,n=t===It;It=t;var r=new Array(8);for(e=7;e>=0;e--)r[e]=Tt.charAt(t%64),t=Math.floor(t/64);a(0===t,"Cannot push at time == 0");var i=r.join("");if(n){for(e=11;e>=0&&63===Nt[e];e--)Nt[e]=0;Nt[e]++}else for(e=0;e<12;e++)Nt[e]=Math.floor(64*Math.random());for(e=0;e<12;e++)i+=Tt.charAt(Nt[e]);return a(20===i.length,"nextPushId: Length should be 20."),i}),Gt=function(){function t(t,e){this.name=t,this.node=e}return t.Wrap=function(e,n){return new t(e,n)},t}(),Xt=function(){function t(){}return t.prototype.getCompare=function(){return this.compare.bind(this)},t.prototype.indexedValueChanged=function(t,e){var n=new Gt(at,t),r=new Gt(at,e);return 0!==this.compare(n,r)},t.prototype.minPost=function(){return Gt.MIN},t}(),$t=function(t){function e(){return null!==t&&t.apply(this,arguments)||this}return n(e,t),Object.defineProperty(e,"__EMPTY_NODE",{get:function(){return Rt},set:function(t){Rt=t},enumerable:!0,configurable:!0}),e.prototype.compare=function(t,e){return ut(t.name,e.name)},e.prototype.isDefinedOn=function(t){throw h("KeyIndex.isDefinedOn not expected to be called.")},e.prototype.indexedValueChanged=function(t,e){return!1},e.prototype.minPost=function(){return Gt.MIN},e.prototype.maxPost=function(){return new Gt(ht,Rt)},e.prototype.makePost=function(t,e){return a("string"==typeof t,"KeyIndex indexValue must always be a string."),new Gt(t,Rt)},e.prototype.toString=function(){return".key"},e}(Xt),Jt=new $t;var Zt,te,ee,ne=function(t){return"number"==typeof t?"number:"+_t(t):"string:"+t},re=function(t){if(t.isLeafNode()){var e=t.val();a("string"==typeof e||"number"==typeof e||"object"==typeof e&&b(e,".sv"),"Priority must be a string or number.")}else a(t===Pt||t.isEmpty(),"priority of unexpected type.");a(t===Pt||t.getPriority().isEmpty(),"Priority nodes can't have a priority of their own.")},ie=function(){function t(e,n){void 0===n&&(n=t.__childrenNodeConstructor.EMPTY_NODE),this.value_=e,this.priorityNode_=n,this.lazyHash_=null,a(void 0!==this.value_&&null!==this.value_,"LeafNode shouldn't be created with null/undefined value."),re(this.priorityNode_)}return Object.defineProperty(t,"__childrenNodeConstructor",{get:function(){return Zt},set:function(t){Zt=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(".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:"+ne(this.priorityNode_.val())+":");var e=typeof this.value_;t+=e+":",t+="number"===e?_t(this.value_):this.value_,this.lazyHash_=X(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(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(i>=0,"Unknown leaf type: "+n),a(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}();var oe,se,ae=new(function(t){function e(){return null!==t&&t.apply(this,arguments)||this}return n(e,t),e.prototype.compare=function(t,e){var n=t.node.getPriority(),r=e.node.getPriority(),i=n.compareTo(r);return 0===i?ut(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 Gt.MIN},e.prototype.maxPost=function(){return new Gt(ht,new ie("[PRIORITY-POST]",ee))},e.prototype.makePost=function(t,e){var n=te(t);return new Gt(e,new ie("[PRIORITY-POST]",n))},e.prototype.toString=function(){return".priority"},e}(Xt)),he=function(){function t(t,e,n,r,i){void 0===i&&(i=null),this.isReverse_=r,this.resultGenerator_=i,this.nodeStack_=[];for(var o=1;!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_)for(e=e.left;!e.isEmpty();)this.nodeStack_.push(e),e=e.right;else for(e=e.right;!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}(),ue=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:ce.EMPTY_NODE,this.right=null!=o?o:ce.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=(r=n(t,(i=this).key))<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))).fixUp_()},t.prototype.removeMin_=function(){if(this.left.isEmpty())return ce.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)).fixUp_()},t.prototype.remove=function(t,e){var n,r;if(e(t,(n=this).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 ce.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=(t=t.copy(null,null,null,null,t.right.rotateRight_())).rotateLeft_()).colorFlip_()),t},t.prototype.moveRedRight_=function(){var t=this.colorFlip_();return t.left.left.isRed_()&&(t=(t=t.rotateRight_()).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_())!==this.right.check_())throw new Error("Black depths differ");return t+(this.isRed_()?0:1)},t.RED=!0,t.BLACK=!1,t}(),le=function(){function t(){}return t.prototype.copy=function(t,e,n,r,i){return this},t.prototype.insert=function(t,e,n){return new ue(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}(),ce=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,ue.BLACK,null,null))},t.prototype.remove=function(e){return new t(this.comparator_,this.root_.remove(e,this.comparator_).copy(null,null,ue.BLACK,null,null))},t.prototype.get=function(t){for(var e,n=this.root_;!n.isEmpty();){if(0===(e=this.comparator_(t,n.key)))return n.value;e<0?n=n.left:e>0&&(n=n.right)}return null},t.prototype.getPredecessorKey=function(t){for(var e,n=this.root_,r=null;!n.isEmpty();){if(0===(e=this.comparator_(t,n.key))){if(n.left.isEmpty())return r?r.key:null;for(n=n.left;!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 he(this.root_,null,this.comparator_,!1,t)},t.prototype.getIteratorFrom=function(t,e){return new he(this.root_,t,this.comparator_,!1,e)},t.prototype.getReverseIteratorFrom=function(t,e){return new he(this.root_,t,this.comparator_,!0,e)},t.prototype.getReverseIterator=function(t){return new he(this.root_,null,this.comparator_,!0,t)},t.EMPTY_NODE=new le,t}(),pe=Math.log(2),de=function(){function t(t){var e;this.count=(e=t+1,parseInt(Math.log(e)/pe,10)),this.current_=this.count-1;var n,r=(n=this.count,parseInt(Array(n+1).join("1"),2));this.bits_=t+1&r}return t.prototype.nextBitIsOne=function(){var t=!(this.bits_&1<<this.current_);return this.current_--,t},t}(),fe=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 ue(s,o.node,ue.BLACK,null,null);var h=parseInt(a/2,10)+e,u=i(e,h),l=i(h+1,r);return o=t[h],s=n?n(o):o,new ue(s,o.node,ue.BLACK,u,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 u=i(o+1,a),l=t[o],c=n?n(l):l;h(new ue(c,l.node,r,null,u))},h=function(t){r?(r.left=t,r=t):(o=t,r=t)},u=0;u<e.count;++u){var l=e.nextBitIsOne(),c=Math.pow(2,e.count-(u+1));l?a(c,ue.BLACK):(a(c,ue.BLACK),a(c,ue.RED))}return o}(new de(t.length));return new ce(r||e,o)},_e={},ye=function(){function t(t,e){this.indexes_=t,this.indexSet_=e}return Object.defineProperty(t,"Default",{get:function(){return a(_e&&ae,"ChildrenNode.ts has not been loaded"),oe=oe||new t({".priority":_e},{".priority":ae})},enumerable:!0,configurable:!0}),t.prototype.get=function(t){var e=S(this.indexes_,t);if(!e)throw new Error("No index defined for "+t);return e===_e?null:e},t.prototype.hasIndex=function(t){return b(this.indexSet_,t.toString())},t.prototype.addIndex=function(e,n){a(e!==Jt,"KeyIndex always exists and isn't meant to be added to the IndexMap.");for(var r,i=[],o=!1,s=n.getIterator(Gt.Wrap),h=s.getNext();h;)o=o||e.isDefinedOn(h.node),i.push(h),h=s.getNext();r=o?fe(i,e.getCompare()):_e;var u=e.toString(),l=I(this.indexSet_);l[u]=e;var c=I(this.indexes_);return c[u]=r,new t(c,l)},t.prototype.addToIndexes=function(e,n){var r=this;return new t(P(this.indexes_,function(t,i){var o=S(r.indexSet_,i);if(a(o,"Missing index implementation for "+i),t===_e){if(o.isDefinedOn(e.node)){for(var s=[],h=n.getIterator(Gt.Wrap),u=h.getNext();u;)u.name!=e.name&&s.push(u),u=h.getNext();return s.push(e),fe(s,o.getCompare())}return _e}var l=n.get(e.name),c=t;return l&&(c=c.remove(new Gt(e.name,l))),c.insert(e,e.node)}),this.indexSet_)},t.prototype.removeFromIndexes=function(e,n){return new t(P(this.indexes_,function(t){if(t===_e)return t;var r=n.get(e.name);return r?t.remove(new Gt(e.name,r)):t}),this.indexSet_)},t}();function ve(t,e){return ut(t.name,e.name)}function ge(t,e){return ut(t,e)}var me=function(){function t(t,e,n){this.children_=t,this.priorityNode_=e,this.indexMap_=n,this.lazyHash_=null,this.priorityNode_&&re(this.priorityNode_),this.children_.isEmpty()&&a(!this.priorityNode_||this.priorityNode_.isEmpty(),"An empty node cannot have a priority")}return Object.defineProperty(t,"EMPTY_NODE",{get:function(){return se||(se=new t(new ce(ge),null,ye.Default))},enumerable:!0,configurable:!0}),t.prototype.isLeafNode=function(){return!1},t.prototype.getPriority=function(){return this.priorityNode_||se},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?se: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(n,"We should always be passing snapshot nodes"),".priority"===e)return this.updatePriority(n);var r=new Gt(e,n),i=void 0,o=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_)),new t(i,i.isEmpty()?se:this.priorityNode_,o)},t.prototype.updateChild=function(t,e){var n=t.getFront();if(null===n)return e;a(".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(ae,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:"+ne(this.getPriority().val())+":"),this.forEachChild(ae,function(e,n){var r=n.hash();""!==r&&(t+=":"+e+":"+r)}),this.lazyHash_=""===t?"":X(t)}return this.lazyHash_},t.prototype.getPredecessorChildName=function(t,e,n){var r=this.resolveIndex_(n);if(r){var i=r.getPredecessorKey(new Gt(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 Gt(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 Gt(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});for(var r=this.children_.getIteratorFrom(t.name,Gt.Wrap),i=r.peek();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});for(var r=this.children_.getReverseIteratorFrom(t.name,Gt.Wrap),i=r.peek();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===Ce?-1:0},t.prototype.withIndex=function(e){if(e===Jt||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===Jt||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()){for(var n=this.getIterator(ae),r=e.getIterator(ae),i=n.getNext(),o=r.getNext();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===Jt?null:this.indexMap_.get(t.toString())},t.INTEGER_REGEXP_=/^(0|[1-9]\d*)$/,t}(),Ce=new(function(t){function e(){return t.call(this,new ce(ge),me.EMPTY_NODE,ye.Default)||this}return n(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 me.EMPTY_NODE},e.prototype.isEmpty=function(){return!1},e}(me));Object.defineProperties(Gt,{MIN:{value:new Gt(at,me.EMPTY_NODE)},MAX:{value:new Gt(ht,Ce)}}),$t.__EMPTY_NODE=me.EMPTY_NODE,ie.__childrenNodeConstructor=me,Pt=Ce,function(t){ee=t}(Ce);var Ee=!0;function we(t,e){if(void 0===e&&(e=null),null===t)return me.EMPTY_NODE;if("object"==typeof t&&".priority"in t&&(e=t[".priority"]),a(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)return new ie(t,we(e));if(t instanceof Array||!Ee){var n=me.EMPTY_NODE,r=t;return T(r,function(t,e){if(b(r,t)&&"."!==t.substring(0,1)){var i=we(e);!i.isLeafNode()&&i.isEmpty()||(n=n.updateImmediateChild(t,i))}}),n.updatePriority(we(e))}var i=[],o=!1,s=t;if(T(s,function(t,e){if("string"!=typeof t||"."!==t.substring(0,1)){var n=we(s[t]);n.isEmpty()||(o=o||!n.getPriority().isEmpty(),i.push(new Gt(t,n)))}}),0==i.length)return me.EMPTY_NODE;var h=fe(i,ve,function(t){return t.name},ge);if(o){var u=fe(i,ae.getCompare());return new me(h,we(e),new ye({".priority":u},{".priority":ae}))}return new me(h,we(e),ye.Default)}!function(t){te=t}(we);var be,Se,Te=new(function(t){function e(){return null!==t&&t.apply(this,arguments)||this}return n(e,t),e.prototype.compare=function(t,e){var n=t.node.compareTo(e.node);return 0===n?ut(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 Gt.MIN},e.prototype.maxPost=function(){return Gt.MAX},e.prototype.makePost=function(t,e){var n=we(t);return new Gt(e,n)},e.prototype.toString=function(){return".value"},e}(Xt)),Ie=function(t){function e(e){var n=t.call(this)||this;return n.indexPath_=e,a(!e.isEmpty()&&".priority"!==e.getFront(),"Can't create PathIndex with empty path or .priority key"),n}return n(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?ut(t.name,e.name):i},e.prototype.makePost=function(t,e){var n=we(t),r=me.EMPTY_NODE.updateChild(this.indexPath_,n);return new Gt(e,r)},e.prototype.maxPost=function(){var t=me.EMPTY_NODE.updateChild(this.indexPath_,Ce);return new Gt(ht,t)},e.prototype.toString=function(){return this.indexPath_.slice().join("/")},e}(Xt),Ne=function(){function t(t,e,n){this.node_=t,this.ref_=e,this.index_=n}return t.prototype.val=function(){return x("DataSnapshot.val",0,0,arguments.length),this.node_.val()},t.prototype.exportVal=function(){return x("DataSnapshot.exportVal",0,0,arguments.length),this.node_.val(!0)},t.prototype.toJSON=function(){return x("DataSnapshot.toJSON",0,1,arguments.length),this.exportVal()},t.prototype.exists=function(){return x("DataSnapshot.exists",0,0,arguments.length),!this.node_.isEmpty()},t.prototype.child=function(e){x("DataSnapshot.child",0,1,arguments.length),e=String(e),Ht("DataSnapshot.child",1,e,!1);var n=new Et(e),r=this.ref_.child(n);return new t(this.node_.getChild(n),r,ae)},t.prototype.hasChild=function(t){x("DataSnapshot.hasChild",1,1,arguments.length),Ht("DataSnapshot.hasChild",1,t,!1);var e=new Et(t);return!this.node_.getChild(e).isEmpty()},t.prototype.getPriority=function(){return x("DataSnapshot.getPriority",0,0,arguments.length),this.node_.getPriority().val()},t.prototype.forEach=function(e){var n=this;return x("DataSnapshot.forEach",1,1,arguments.length),A("DataSnapshot.forEach",1,e,!1),!this.node_.isLeafNode()&&!!this.node_.forEachChild(this.index_,function(r,i){return e(new t(i,n.ref_.child(r),ae))})},t.prototype.hasChildren=function(){return x("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 x("DataSnapshot.numChildren",0,0,arguments.length),this.node_.numChildren()},t.prototype.getRef=function(){return x("DataSnapshot.ref",0,0,arguments.length),this.ref_},Object.defineProperty(t.prototype,"ref",{get:function(){return this.getRef()},enumerable:!0,configurable:!0}),t}(),Re=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+":"+E(this.snapshot.exportVal())},t}(),Pe=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}(),De=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 Re("value",this,new Ne(t.snapshotNode,e.getRef(),n))},t.prototype.getEventRunner=function(t){var e=this.context_;if("cancel"===t.getEventType()){a(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 Pe(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}(),Oe=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,b(this.callbacks_,e)},t.prototype.createCancelEvent=function(t,e){return this.cancelCallback_?new Pe(this,t,e):null},t.prototype.createEvent=function(t,e){a(null!=t.childName,"Child events should have a childName.");var n=e.getRef().child(t.childName),r=e.getQueryParams().getIndex();return new Re(t.type,this,new Ne(t.snapshotNode,n,r),t.prevName)},t.prototype.getEventRunner=function(t){var e=this.context_;if("cancel"===t.getEventType()){a(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){if(e instanceof t){if(!this.callbacks_||!e.callbacks_)return!0;if(this.context_===e.context_){var n=R(e.callbacks_);if(n===R(this.callbacks_)){if(1===n){var r=O(e.callbacks_),i=O(this.callbacks_);return!(i!==r||e.callbacks_[r]&&this.callbacks_[i]&&e.callbacks_[r]!==this.callbacks_[i])}return function(t,e){for(var n in t)if(Object.prototype.hasOwnProperty.call(t,n)&&!e(n,t[n]))return!1;return!0}(this.callbacks_,function(t,n){return e.callbacks_[t]===n})}}}return!1},t.prototype.hasAnyCallback=function(){return null!==this.callbacks_},t}(),ke=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(be,"Reference.ts has not been loaded"),be},set:function(t){be=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()===Jt){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()){if(t.getIndexStartName()!=at)throw new Error(r);if("string"!=typeof e)throw new Error(i)}if(t.hasEnd()){if(t.getIndexEndName()!=ht)throw new Error(r);if("string"!=typeof n)throw new Error(i)}}else if(t.getIndex()===ae){if(null!=e&&!Lt(e)||null!=n&&!Lt(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(t.getIndex()instanceof Ie||t.getIndex()===Te,"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 x("Query.ref",0,0,arguments.length),new t.__referenceConstructor(this.repo,this.path)},t.prototype.on=function(e,n,r,i){x("Query.on",2,4,arguments.length),Ut("Query.on",1,e,!1),A("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 De(t,e||null,n||null);this.repo.addEventCallbackForQuery(this,r)},t.prototype.onChildEvent=function(t,e,n){var r=new Oe(t,e,n);this.repo.addEventCallbackForQuery(this,r)},t.prototype.off=function(t,e,n){x("Query.off",0,3,arguments.length),Ut("Query.off",1,t,!0),A("Query.off",2,e,!0),L("Query.off",3,n,!0);var r=null,i=null;"value"===t?r=new De(e||null,null,n||null):t&&(e&&((i={})[t]=e),r=new Oe(i,null,n||null));this.repo.removeEventCallbackForQuery(this,r)},t.prototype.once=function(e,n,r,i){var o=this;x("Query.once",1,4,arguments.length),Ut("Query.once",1,e,!1),A("Query.once",2,n,!0);var s=t.getCancelAndContextArgs_("Query.once",r,i),a=!0,h=new d;h.promise.catch(function(){});var u=function(t){a&&(a=!1,o.off(e,u),n&&n.bind(s.context)(t),h.resolve(t))};return this.on(e,u,function(t){o.off(e,u),s.cancel&&s.cancel.bind(s.context)(t),h.reject(t)}),h.promise},t.prototype.limitToFirst=function(e){if(x("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(x("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(x("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.');Ht("Query.orderByChild",1,e,!1),this.validateNoPreviousOrderByCall_("Query.orderByChild");var n=new Et(e);if(n.isEmpty())throw new Error("Query.orderByChild: cannot pass in empty path.  Use Query.orderByValue() instead.");var r=new Ie(n),i=this.queryParams_.orderBy(r);return t.validateQueryEndpoints_(i),new t(this.repo,this.path,i,!0)},t.prototype.orderByKey=function(){x("Query.orderByKey",0,0,arguments.length),this.validateNoPreviousOrderByCall_("Query.orderByKey");var e=this.queryParams_.orderBy(Jt);return t.validateQueryEndpoints_(e),new t(this.repo,this.path,e,!0)},t.prototype.orderByPriority=function(){x("Query.orderByPriority",0,0,arguments.length),this.validateNoPreviousOrderByCall_("Query.orderByPriority");var e=this.queryParams_.orderBy(ae);return t.validateQueryEndpoints_(e),new t(this.repo,this.path,e,!0)},t.prototype.orderByValue=function(){x("Query.orderByValue",0,0,arguments.length),this.validateNoPreviousOrderByCall_("Query.orderByValue");var e=this.queryParams_.orderBy(Te);return t.validateQueryEndpoints_(e),new t(this.repo,this.path,e,!0)},t.prototype.startAt=function(e,n){void 0===e&&(e=null),x("Query.startAt",0,2,arguments.length),Mt("Query.startAt",1,e,this.path,!0),Vt("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),x("Query.endAt",0,2,arguments.length),Mt("Query.endAt",1,e,this.path,!0),Vt("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(x("Query.equalTo",1,2,arguments.length),Mt("Query.equalTo",1,t,this.path,!1),Vt("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 x("Query.toString",0,0,arguments.length),this.repo.toString()+this.path.toUrlEncodedString()},t.prototype.toJSON=function(){return x("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=pt(t);return"{}"===e?"default":e},t.prototype.isEqual=function(e){if(x("Query.isEqual",1,1,arguments.length),!(e instanceof t)){throw new Error("Query.isEqual failed: First argument must be an instance of firebase.database.Query.")}var n=this.repo===e.repo,r=this.path.equals(e.path),i=this.queryIdentifier()===e.queryIdentifier();return n&&r&&i},t.getCancelAndContextArgs_=function(t,e,n){var r={cancel:null,context:null};if(e&&n)r.cancel=e,A(t,3,r.cancel,!0),r.context=n,L(t,4,r.context,!0);else if(e)if("object"==typeof e&&null!==e)r.context=e;else{if("function"!=typeof e)throw new Error(F(t,3,!0)+" must either be a cancel callback or a context object.");r.cancel=e}return r},Object.defineProperty(t.prototype,"ref",{get:function(){return this.getRef()},enumerable:!0,configurable:!0}),t}(),xe=function(){function t(){this.set={}}return t.prototype.add=function(t,e){this.set[t]=null===e||e},t.prototype.contains=function(t){return b(this.set,t)},t.prototype.get=function(t){return this.contains(t)?this.set[t]:void 0},t.prototype.remove=function(t){delete this.set[t]},t.prototype.clear=function(){this.set={}},t.prototype.isEmpty=function(){return N(this.set)},t.prototype.count=function(){return R(this.set)},t.prototype.each=function(t){T(this.set,function(e,n){return t(e,n)})},t.prototype.keys=function(){var t=[];return T(this.set,function(e){t.push(e)}),t},t}(),Fe=function(){function t(){this.value_=null,this.children_=null}return t.prototype.find=function(t){if(null!=this.value_)return this.value_.getChild(t);if(t.isEmpty()||null==this.children_)return null;var e=t.getFront();return t=t.popFront(),this.children_.contains(e)?this.children_.get(e).find(t):null},t.prototype.remember=function(e,n){if(e.isEmpty())this.value_=n,this.children_=null;else if(null!==this.value_)this.value_=this.value_.updateChild(e,n);else{null==this.children_&&(this.children_=new xe);var r=e.getFront();this.children_.contains(r)||this.children_.add(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_=null,!0;if(null!==this.value_){if(this.value_.isLeafNode())return!1;var e=this.value_;this.value_=null;var n=this;return e.forEachChild(ae,function(t,e){n.remember(new Et(t),e)}),this.forget(t)}if(null!==this.children_){var r=t.getFront();if(t=t.popFront(),this.children_.contains(r))this.children_.get(r).forget(t)&&this.children_.remove(r);return!!this.children_.isEmpty()&&(this.children_=null,!0)}return!0},t.prototype.forEachTree=function(t,e){null!==this.value_?e(t,this.value_):this.forEachChild(function(n,r){var i=new Et(t.toString()+"/"+n);r.forEachTree(i,e)})},t.prototype.forEachChild=function(t){null!==this.children_&&this.children_.each(function(e,n){t(e,n)})},t}(),Ae=function(t,e){return t&&"object"==typeof t?(a(".sv"in t,"Unexpected leaf node or priority contents"),e[t[".sv"]]):t},Le=function(t,e){var n,r=t.getPriority().val(),i=Ae(r,e);if(t.isLeafNode()){var o=t,s=Ae(o.getValue(),e);return s!==o.getValue()||i!==o.getPriority().val()?new ie(s,we(i)):t}var a=t;return n=a,i!==a.getPriority().val()&&(n=n.updatePriority(new ie(i))),a.forEachChild(ae,function(t,r){var i=Le(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"}(Se||(Se={}));var Me,We,qe=function(){function t(t,e,n,r){this.fromUser=t,this.fromServer=e,this.queryId=n,this.tagged=r,a(!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}(),Qe=function(){function t(t,e,n){this.path=t,this.affectedTree=e,this.revert=n,this.type=Se.ACK_USER_WRITE,this.source=qe.User}return t.prototype.operationForChild=function(e){if(this.path.isEmpty()){if(null!=this.affectedTree.value)return a(this.affectedTree.children.isEmpty(),"affectedTree should not have overlapping affected paths."),this;var n=this.affectedTree.subtree(new Et(e));return new t(Et.Empty,n,this.revert)}return a(this.path.getFront()===e,"operationForChild called for unrelated child."),new t(this.path.popFront(),this.affectedTree,this.revert)},t}(),Ue=function(){return Me||(Me=new ce(lt)),Me},Ve=function(){function t(t,e){void 0===e&&(e=Ue()),this.value=t,this.children=e}return t.fromObject=function(e){var n=t.Empty;return T(e,function(t,e){n=n.set(new Et(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:Et.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);return null!=i?{path:new Et(n).child(i.path),value:i.value}: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).set(e.popFront(),n),o=this.children.insert(r,i);return new t(this.value,o)},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).setTree(e.popFront(),n),o=void 0;return o=i.isEmpty()?this.children.remove(r):this.children.insert(r,i),new t(this.value,o)},t.prototype.fold=function(t){return this.fold_(Et.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,Et.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,Et.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_(Et.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}(),He=function(){function t(t,e){this.source=t,this.path=e,this.type=Se.LISTEN_COMPLETE}return t.prototype.operationForChild=function(e){return this.path.isEmpty()?new t(this.source,Et.Empty):new t(this.source,this.path.popFront())},t}(),Be=function(){function t(t,e,n){this.source=t,this.path=e,this.snap=n,this.type=Se.OVERWRITE}return t.prototype.operationForChild=function(e){return this.path.isEmpty()?new t(this.source,Et.Empty,this.snap.getImmediateChild(e)):new t(this.source,this.path.popFront(),this.snap)},t}(),je=function(){function t(t,e,n){this.source=t,this.path=e,this.children=n,this.type=Se.MERGE}return t.prototype.operationForChild=function(e){if(this.path.isEmpty()){var n=this.children.subtree(new Et(e));return n.isEmpty()?null:n.value?new Be(this.source,Et.Empty,n.value):new t(this.source,Et.Empty,n)}return a(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}(),Ke=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}(),Ye=function(){function t(t,e){this.eventCache_=t,this.serverCache_=e}return t.prototype.updateEventSnap=function(e,n,r){return new t(new Ke(e,n,r),this.serverCache_)},t.prototype.updateServerSnap=function(e,n,r){return new t(this.eventCache_,new Ke(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 Ke(me.EMPTY_NODE,!1,!1),new Ke(me.EMPTY_NODE,!1,!1)),t}(),ze=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}(),Ge=function(){function t(t){this.index_=t}return t.prototype.updateChild=function(t,e,n,r,i,o){a(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(ze.childRemovedChange(e,s)):a(t.isLeafNode(),"A child remove without an old child only makes sense on a leaf node"):s.isEmpty()?o.trackChildChange(ze.childAddedChange(e,n)):o.trackChildChange(ze.childChangedChange(e,n,s))),t.isLeafNode()&&n.isEmpty()?t:t.updateImmediateChild(e,n).withIndex(this.index_))},t.prototype.updateFullNode=function(t,e,n){return null!=n&&(t.isLeafNode()||t.forEachChild(ae,function(t,r){e.hasChild(t)||n.trackChildChange(ze.childRemovedChange(t,r))}),e.isLeafNode()||e.forEachChild(ae,function(e,r){if(t.hasChild(e)){var i=t.getImmediateChild(e);i.equals(r)||n.trackChildChange(ze.childChangedChange(e,r,i))}else n.trackChildChange(ze.childAddedChange(e,r))})),e.withIndex(this.index_)},t.prototype.updatePriority=function(t,e){return t.isEmpty()?me.EMPTY_NODE:t.updatePriority(e)},t.prototype.filtersNodes=function(){return!1},t.prototype.getIndexedFilter=function(){return this},t.prototype.getIndex=function(){return this.index_},t}(),Xe=function(){function t(){this.changeMap_={}}return t.prototype.trackChildChange=function(t){var e=t.type,n=t.childName;a(e==ze.CHILD_ADDED||e==ze.CHILD_CHANGED||e==ze.CHILD_REMOVED,"Only child changes supported for tracking"),a(".priority"!==n,"Only non-priority child changes can be tracked.");var r=S(this.changeMap_,n);if(r){var i=r.type;if(e==ze.CHILD_ADDED&&i==ze.CHILD_REMOVED)this.changeMap_[n]=ze.childChangedChange(n,t.snapshotNode,r.snapshotNode);else if(e==ze.CHILD_REMOVED&&i==ze.CHILD_ADDED)delete this.changeMap_[n];else if(e==ze.CHILD_REMOVED&&i==ze.CHILD_CHANGED)this.changeMap_[n]=ze.childRemovedChange(n,r.oldSnap);else if(e==ze.CHILD_CHANGED&&i==ze.CHILD_ADDED)this.changeMap_[n]=ze.childAddedChange(n,t.snapshotNode);else{if(e!=ze.CHILD_CHANGED||i!=ze.CHILD_CHANGED)throw h("Illegal combination of changes: "+t+" occurred after "+r);this.changeMap_[n]=ze.childChangedChange(n,t.snapshotNode,r.oldSnap)}}else this.changeMap_[n]=t},t.prototype.getChanges=function(){return function(t){var e=[],n=0;for(var r in t)e[n++]=t[r];return e}(this.changeMap_)},t}(),$e=new(function(){function t(){}return t.prototype.getCompleteChild=function(t){return null},t.prototype.getChildAfterChild=function(t,e,n){return null},t}()),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 Ke(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}(),Ze=function(){return function(t,e){this.viewCache=t,this.changes=e}}(),tn=function(){function t(t){this.filter_=t}return t.prototype.assertIndexed=function(t){a(t.getEventCache().getNode().isIndexed(this.filter_.getIndex()),"Event snap not indexed"),a(t.getServerCache().getNode().isIndexed(this.filter_.getIndex()),"Server snap not indexed")},t.prototype.applyOperation=function(e,n,r,i){var o,s,u=new Xe;if(n.type===Se.OVERWRITE){var l=n;l.source.fromUser?o=this.applyUserOverwrite_(e,l.path,l.snap,r,i,u):(a(l.source.fromServer,"Unknown source."),s=l.source.tagged||e.getServerCache().isFiltered()&&!l.path.isEmpty(),o=this.applyServerOverwrite_(e,l.path,l.snap,r,i,s,u))}else if(n.type===Se.MERGE){var c=n;c.source.fromUser?o=this.applyUserMerge_(e,c.path,c.children,r,i,u):(a(c.source.fromServer,"Unknown source."),s=c.source.tagged||e.getServerCache().isFiltered(),o=this.applyServerMerge_(e,c.path,c.children,r,i,s,u))}else if(n.type===Se.ACK_USER_WRITE){var p=n;o=p.revert?this.revertUserWrite_(e,p.path,r,i,u):this.ackUserWrite_(e,p.path,p.affectedTree,r,i,u)}else{if(n.type!==Se.LISTEN_COMPLETE)throw h("Unknown operation type: "+n.type);o=this.listenComplete_(e,n.path,r,u)}var d=u.getChanges();return t.maybeAddValueEvent_(e,o,d),new Ze(o,d)},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(ze.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,h=void 0;if(e.isEmpty())if(a(t.getServerCache().isFullyInitialized(),"If change path is empty, we must have complete server data"),t.getServerCache().isFiltered()){var u=t.getCompleteServerSnap(),l=u instanceof me?u:me.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(1==e.getLength(),"Can't have a priority with additional path components");var f=o.getNode();h=t.getServerCache().getNode();var _=n.calcEventCacheAfterServerOverwrite(e,f,h);s=null!=_?this.filter_.updatePriority(f,_):o.getNode()}else{var y=e.popFront(),v=void 0;if(o.isCompleteForChild(d)){h=t.getServerCache().getNode();var g=n.calcEventCacheAfterServerOverwrite(e,o.getNode(),h);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,h=t.getServerCache(),u=o?this.filter_:this.filter_.getIndexedFilter();if(e.isEmpty())a=u.updateFullNode(h.getNode(),n,null);else if(u.filtersNodes()&&!h.isFiltered()){var l=h.getNode().updateChild(e,n);a=u.updateFullNode(h.getNode(),l,null)}else{var c=e.getFront();if(!h.isCompleteForPath(e)&&e.getLength()>1)return t;var p=e.popFront(),d=h.getNode().getImmediateChild(c).updateChild(p,n);a=".priority"==c?u.updatePriority(h.getNode(),d):u.updateChild(h.getNode(),c,d,p,$e,null)}var f=t.updateServerSnap(a,h.isFullyInitialized()||e.isEmpty(),u.filtersNodes()),_=new Je(r,f,i);return this.generateEventCacheAfterServerEvent_(f,e,r,_,s)},t.prototype.applyUserOverwrite_=function(t,e,n,r,i,o){var s,a,h=t.getEventCache(),u=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,h.isFullyInitialized(),h.isFiltered());else{var c=e.popFront(),p=h.getNode().getImmediateChild(l),d=void 0;if(c.isEmpty())d=n;else{var f=u.getCompleteChild(l);d=null!=f?".priority"===c.getBack()&&f.getChild(c.parent()).isEmpty()?f:f.updateChild(c,n):me.EMPTY_NODE}if(p.equals(d))s=t;else{var _=this.filter_.updateChild(h.getNode(),l,d,c,u,o);s=t.updateEventSnap(_,h.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,h=e;return r.foreach(function(r,u){var l=n.child(r);t.cacheHasChild_(e,l.getFront())&&(h=a.applyUserOverwrite_(h,l,u,i,o,s))}),r.foreach(function(r,u){var l=n.child(r);t.cacheHasChild_(e,l.getFront())||(h=a.applyUserOverwrite_(h,l,u,i,o,s))}),h},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 h,u=t;h=e.isEmpty()?n:Ve.Empty.setTree(e,n);var l=t.getServerCache().getNode();return h.children.inorderTraversal(function(e,n){if(l.hasChild(e)){var h=t.getServerCache().getNode().getImmediateChild(e),c=a.applyMerge_(h,n);u=a.applyServerOverwrite_(u,new Et(e),c,r,i,o,s)}}),h.children.inorderTraversal(function(e,n){var h=!t.getServerCache().isCompleteForChild(e)&&null==n.value;if(!l.hasChild(e)&&!h){var c=t.getServerCache().getNode().getImmediateChild(e),p=a.applyMerge_(c,n);u=a.applyServerOverwrite_(u,new Et(e),p,r,i,o,s)}}),u},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 h=Ve.Empty;return a.getNode().forEachChild(Jt,function(t,e){h=h.set(new Et(t),e)}),this.applyServerMerge_(t,e,h,r,i,s,o)}return t}var u=Ve.Empty;return n.foreach(function(t,n){var r=e.child(t);a.isCompleteForPath(r)&&(u=u.set(t,a.getNode().getChild(r)))}),this.applyServerMerge_(t,e,u,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,$e,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),h=t.getEventCache().getNode(),u=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(c instanceof me,"serverChildren would be complete if leaf node"),l=n.calcCompleteEventChildren(c)}l=l,u=this.filter_.updateFullNode(h,l,i)}else{var p=e.getFront(),d=n.calcCompleteChild(p,t.getServerCache());null==d&&t.getServerCache().isCompleteForChild(p)&&(d=h.getImmediateChild(p)),(u=null!=d?this.filter_.updateChild(h,p,d,e.popFront(),s,i):t.getEventCache().getNode().hasChild(p)?this.filter_.updateChild(h,p,me.EMPTY_NODE,e.popFront(),s,i):h).isEmpty()&&t.getServerCache().isFullyInitialized()&&(o=n.calcCompleteEventCache(t.getCompleteServerSnap())).isLeafNode()&&(u=this.filter_.updateFullNode(u,o,i))}return o=t.getServerCache().isFullyInitialized()||null!=n.shadowingWrite(Et.Empty),t.updateEventSnap(u,o,this.filter_.filtersNodes())},t}(),en=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===ze.CHILD_CHANGED&&r.index_.indexedValueChanged(t.oldSnap,t.snapshotNode)&&o.push(ze.childMovedChange(t.childName,t.snapshotNode))}),this.generateEventsForType_(i,ze.CHILD_REMOVED,t,n,e),this.generateEventsForType_(i,ze.CHILD_ADDED,t,n,e),this.generateEventsForType_(i,ze.CHILD_MOVED,o,n,e),this.generateEventsForType_(i,ze.CHILD_CHANGED,t,n,e),this.generateEventsForType_(i,ze.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 h("Should only compare child_ events.");var n=new Gt(t.childName,t.snapshotNode),r=new Gt(e.childName,e.snapshotNode);return this.index_.compare(n,r)},t}(),nn=function(){function t(t,e){this.query_=t,this.eventRegistrations_=[];var n=this.query_.getQueryParams(),r=new Ge(n.getIndex()),i=n.getNodeFilter();this.processor_=new tn(i);var o=e.getServerCache(),s=e.getEventCache(),a=r.updateFullNode(me.EMPTY_NODE,o.getNode(),null),h=i.updateFullNode(me.EMPTY_NODE,s.getNode(),null),u=new Ke(a,o.isFullyInitialized(),r.filtersNodes()),l=new Ke(h,s.isFullyInitialized(),i.filtersNodes());this.viewCache_=new Ye(l,u),this.eventGenerator_=new en(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(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===Se.MERGE&&null!==t.source.queryId&&(a(this.viewCache_.getCompleteServerSnap(),"We should always have a full cache before handling merges"),a(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(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=[];e.getNode().isLeafNode()||e.getNode().forEachChild(ae,function(t,e){n.push(ze.childAddedChange(t,e))});return e.isFullyInitialized()&&n.push(ze.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}(),rn=function(){function t(){this.views_={}}return Object.defineProperty(t,"__referenceConstructor",{get:function(){return a(We,"Reference.ts has not been loaded"),We},set:function(t){a(!We,"__referenceConstructor has already been defined"),We=t},enumerable:!0,configurable:!0}),t.prototype.isEmpty=function(){return N(this.views_)},t.prototype.applyOperation=function(t,e,n){var r=t.source.queryId;if(null!==r){var i=S(this.views_,r);return a(null!=i,"SyncTree gave us an op for an invalid query."),i.applyOperation(t,e,n)}var o=[];return T(this.views_,function(r,i){o=o.concat(i.applyOperation(t,e,n))}),o},t.prototype.addEventRegistration=function(t,e,n,r,i){var o=t.queryIdentifier(),s=S(this.views_,o);if(!s){var a=n.calcCompleteEventCache(i?r:null),h=!1;a?h=!0:r instanceof me?(a=n.calcCompleteEventChildren(r),h=!1):(a=me.EMPTY_NODE,h=!1);var u=new Ye(new Ke(a,h,!1),new Ke(r,i,!1));s=new nn(t,u),this.views_[o]=s}return s.addEventRegistration(e),s.getInitialEvents(e)},t.prototype.removeEventRegistration=function(e,n,r){var i=e.queryIdentifier(),o=[],s=[],a=this.hasCompleteView();if("default"===i){var h=this;T(this.views_,function(t,e){s=s.concat(e.removeEventRegistration(n,r)),e.isEmpty()&&(delete h.views_[t],e.getQuery().getQueryParams().loadsAllData()||o.push(e.getQuery()))})}else{var u=S(this.views_,i);u&&(s=s.concat(u.removeEventRegistration(n,r)),u.isEmpty()&&(delete this.views_[i],u.getQuery().getQueryParams().loadsAllData()||o.push(u.getQuery())))}return a&&!this.hasCompleteView()&&o.push(new t.__referenceConstructor(e.repo,e.path)),{removed:o,events:s}},t.prototype.getQueryViews=function(){var t=this;return Object.keys(this.views_).map(function(e){return t.views_[e]}).filter(function(t){return!t.getQuery().getQueryParams().loadsAllData()})},t.prototype.getCompleteServerCache=function(t){var e=null;return T(this.views_,function(n,r){e=e||r.getCompleteServerCache(t)}),e},t.prototype.viewForQuery=function(t){if(t.getQueryParams().loadsAllData())return this.getCompleteView();var e=t.queryIdentifier();return S(this.views_,e)},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,n;return(t=this.views_,(n=D(t,function(t){return t.getQuery().getQueryParams().loadsAllData()},e))&&t[n])||null},t}(),on=function(){function t(t){this.writeTree_=t}return t.prototype.addWrite=function(e,n){if(e.isEmpty())return new t(new Ve(n));var r=this.writeTree_.findRootMostValueAndPath(e);if(null!=r){var i=r.path,o=r.value,s=Et.relativePath(i,e);return o=o.updateChild(s,n),new t(this.writeTree_.set(i,o))}var a=new Ve(n);return new t(this.writeTree_.setTree(e,a))},t.prototype.addWrites=function(t,e){var n=this;return T(e,function(e,r){n=n.addWrite(t.child(e),r)}),n},t.prototype.removeWrite=function(e){return e.isEmpty()?t.Empty:new t(this.writeTree_.setTree(e,Ve.Empty))},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(Et.relativePath(e.path,t)):null},t.prototype.getCompleteChildren=function(){var t=[],e=this.writeTree_.value;return null!=e?e.isLeafNode()||e.forEachChild(ae,function(e,n){t.push(new Gt(e,n))}):this.writeTree_.children.inorderTraversal(function(e,n){null!=n.value&&t.push(new Gt(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 Ve(n):this.writeTree_.subtree(e))},t.prototype.isEmpty=function(){return this.writeTree_.isEmpty()},t.prototype.apply=function(e){return t.applySubtreeWrite_(Et.Empty,this.writeTree_,e)},t.Empty=new t(new Ve(null)),t.applySubtreeWrite_=function(e,n,r){if(null!=n.value)return r.updateChild(e,n.value);var i=null;return n.children.inorderTraversal(function(n,o){".priority"===n?(a(null!==o.value,"Priority writes must always be leaf nodes"),i=o.value):r=t.applySubtreeWrite_(e.child(n),o,r)}),r.getChild(e).isEmpty()||null===i||(r=r.updateChild(e.child(".priority"),i)),r},t}(),sn=function(){function t(){this.visibleWrites_=on.Empty,this.allWrites_=[],this.lastWriteId_=-1}return t.prototype.childWrites=function(t){return new an(t,this)},t.prototype.addOverwrite=function(t,e,n,r){a(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(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(n>=0,"removeWrite called with nonexistent writeId.");var r=this.allWrites_[n];this.allWrites_.splice(n,1);for(var i=r.visible,o=!1,s=this.allWrites_.length-1;i&&s>=0;){var h=this.allWrites_[s];h.visible&&(s>=n&&this.recordContainsPath_(h,r.path)?i=!1:r.path.contains(h.path)&&(o=!0)),s--}if(i){if(o)return this.resetTree_(),!0;if(r.snap)this.visibleWrites_=this.visibleWrites_.removeWrite(r.path);else{var u=r.children;T(u,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(Et.Empty)){var s=t.layerTree_(this.allWrites_,function(t){return(t.visible||i)&&(!r||!~r.indexOf(t.writeId))&&(t.path.contains(e)||e.contains(t.path))},e);u=n||me.EMPTY_NODE;return s.apply(u)}return null}var a=this.visibleWrites_.getCompleteNode(e);if(null!=a)return a;var h=this.visibleWrites_.childCompoundWrite(e);if(h.isEmpty())return n;if(null!=n||h.hasCompleteWrite(Et.Empty)){var u=n||me.EMPTY_NODE;return h.apply(u)}return null},t.prototype.calcCompleteEventChildren=function(t,e){var n=me.EMPTY_NODE,r=this.visibleWrites_.getCompleteNode(t);if(r)return r.isLeafNode()||r.forEachChild(ae,function(t,e){n=n.updateImmediateChild(t,e)}),n;if(e){var i=this.visibleWrites_.childCompoundWrite(t);return e.forEachChild(ae,function(t,e){var r=i.childCompoundWrite(new Et(t)).apply(e);n=n.updateImmediateChild(t,r)}),i.getCompleteChildren().forEach(function(t){n=n.updateImmediateChild(t.name,t.node)}),n}return this.visibleWrites_.childCompoundWrite(t).getCompleteChildren().forEach(function(t){n=n.updateImmediateChild(t.name,t.node)}),n},t.prototype.calcEventCacheAfterServerOverwrite=function(t,e,n,r){a(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);return null!=i?i:n.isCompleteForChild(e)?this.visibleWrites_.childCompoundWrite(r).apply(n.getNode().getImmediateChild(e)):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),h=a.getCompleteNode(Et.Empty);if(null!=h)s=h;else{if(null==e)return[];s=a.apply(e)}if((s=s.withIndex(o)).isEmpty()||s.isLeafNode())return[];for(var u=[],l=o.getCompare(),c=i?s.getReverseIteratorFrom(n,o):s.getIteratorFrom(n,o),p=c.getNext();p&&u.length<r;)0!==l(p,n)&&u.push(p),p=c.getNext();return u},t.prototype.recordContainsPath_=function(t,e){return t.snap?t.path.contains(e):!!D(t.children,function(n,r){return t.path.child(r).contains(e)})},t.prototype.resetTree_=function(){this.visibleWrites_=t.layerTree_(this.allWrites_,t.DefaultFilter_,Et.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=on.Empty,i=0;i<t.length;++i){var o=t[i];if(e(o)){var s=o.path,a=void 0;if(o.snap)n.contains(s)?(a=Et.relativePath(n,s),r=r.addWrite(a,o.snap)):s.contains(n)&&(a=Et.relativePath(s,n),r=r.addWrite(Et.Empty,o.snap.getChild(a)));else{if(!o.children)throw h("WriteRecord should have .snap or .children");if(n.contains(s))a=Et.relativePath(n,s),r=r.addWrites(a,o.children);else if(s.contains(n))if((a=Et.relativePath(s,n)).isEmpty())r=r.addWrites(Et.Empty,o.children);else{var u=S(o.children,a.getFront());if(u){var l=u.getChild(a.popFront());r=r.addWrite(Et.Empty,l)}}}}}return r},t}(),an=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}(),hn=function(){function t(t){this.listenProvider_=t,this.syncPointTree_=Ve.Empty,this.pendingWriteTree_=new sn,this.tagToQueryMap_={},this.queryToTagMap_={}}return t.prototype.applyUserOverwrite=function(t,e,n,r){return this.pendingWriteTree_.addOverwrite(t,e,n,r),r?this.applyOperationToSyncPoints_(new Be(qe.User,t,e)):[]},t.prototype.applyUserMerge=function(t,e,n){this.pendingWriteTree_.addMerge(t,e,n);var r=Ve.fromObject(e);return this.applyOperationToSyncPoints_(new je(qe.User,t,r))},t.prototype.ackUserWrite=function(t,e){void 0===e&&(e=!1);var n=this.pendingWriteTree_.getWrite(t);if(this.pendingWriteTree_.removeWrite(t)){var r=Ve.Empty;return null!=n.snap?r=r.set(Et.Empty,!0):T(n.children,function(t,e){r=r.set(new Et(t),e)}),this.applyOperationToSyncPoints_(new Qe(n.path,r,e))}return[]},t.prototype.applyServerOverwrite=function(t,e){return this.applyOperationToSyncPoints_(new Be(qe.Server,t,e))},t.prototype.applyServerMerge=function(t,e){var n=Ve.fromObject(e);return this.applyOperationToSyncPoints_(new je(qe.Server,t,n))},t.prototype.applyListenComplete=function(t){return this.applyOperationToSyncPoints_(new He(qe.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,h=Et.relativePath(s,e),u=new Be(qe.forServerTaggedQuery(a),h,n);return this.applyTaggedOperation_(s,u)}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,h=Et.relativePath(s,e),u=Ve.fromObject(n),l=new je(qe.forServerTaggedQuery(a),h,u);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=Et.relativePath(o,e),h=new He(qe.forServerTaggedQuery(s),a);return this.applyTaggedOperation_(o,h)}return[]},t.prototype.addEventRegistration=function(e,n){var r=e.path,i=null,o=!1;this.syncPointTree_.foreachOnPath(r,function(t,e){var n=Et.relativePath(t,r);i=i||e.getCompleteServerCache(n),o=o||e.hasCompleteView()});var s,h=this.syncPointTree_.get(r);(h?(o=o||h.hasCompleteView(),i=i||h.getCompleteServerCache(Et.Empty)):(h=new rn,this.syncPointTree_=this.syncPointTree_.set(r,h)),null!=i)?s=!0:(s=!1,i=me.EMPTY_NODE,this.syncPointTree_.subtree(r).foreachChild(function(t,e){var n=e.getCompleteServerCache(Et.Empty);n&&(i=i.updateImmediateChild(t,n))}));var u=h.viewExistsForQuery(e);if(!u&&!e.getQueryParams().loadsAllData()){var l=t.makeQueryKey_(e);a(!(l in this.queryToTagMap_),"View does not exist, but we have a tag");var c=t.getNextQueryTag_();this.queryToTagMap_[l]=c,this.tagToQueryMap_["_"+c]=l}var p=this.pendingWriteTree_.childWrites(r),d=h.addEventRegistration(e,n,p,i,s);if(!u&&!o){var f=h.viewForQuery(e);d=d.concat(this.setupListener_(e,f))}return d},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 h=s.removeEventRegistration(e,n,r);s.isEmpty()&&(this.syncPointTree_=this.syncPointTree_.remove(o));var u=h.removed;a=h.events;var l=-1!==u.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&&u.length>0&&!r)if(l){this.listenProvider_.stopListening(t.queryForListening_(e),null)}else u.forEach(function(e){var n=i.queryToTagMap_[t.makeQueryKey_(e)];i.listenProvider_.stopListening(t.queryForListening_(e),n)});this.removeTags_(u)}return a},t.prototype.calcCompleteEventCache=function(t,e){var n=this.pendingWriteTree_,r=this.syncPointTree_.findOnPath(t,function(e,n){var r=Et.relativePath(e,t),i=n.getCompleteServerCache(r);if(i)return i});return n.calcCompleteEventCache(t,r,e,!0)},t.prototype.collectDistinctViewsForSubTree_=function(t){return t.fold(function(t,e,n){if(e&&e.hasCompleteView())return[e.getCompleteView()];var r=[];return e&&(r=e.getQueryViews()),T(n,function(t,e){r=r.concat(e)}),r})},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_[i];delete this.queryToTagMap_[i],delete this.tagToQueryMap_["_"+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),h=this.syncPointTree_.subtree(r);if(i)a(!h.value.hasCompleteView(),"If we're adding a query, it shouldn't be shadowed");else for(var u=h.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()}))),T(n,function(t,e){r=r.concat(e)}),r}),l=0;l<u.length;++l){var c=u[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(){return(t.getServerCache()||me.EMPTY_NODE).hash()},onComplete:function(t){if("ok"===t)return r?e.applyTaggedListenComplete(n.path,r):e.applyListenComplete(n.path);var i=function(t,e){var n="Unknown Error";"too_big"===t?n="The data requested exceeds the maximum size that can be accessed with a single request.":"permission_denied"==t?n="Client doesn't have permission to access the desired data.":"unavailable"==t&&(n="The service is unavailable");var r=new Error(t+" at "+e.path.toString()+": "+n);return r.code=t.toUpperCase(),r}(t,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(-1!==e&&e<t.length-1,"Bad queryKey."),{queryId:t.substr(e+1),path:new Et(t.substr(0,e))}},t.prototype.queryKeyForTag_=function(t){return this.tagToQueryMap_["_"+t]},t.prototype.tagForQuery_=function(e){var n=t.makeQueryKey_(e);return S(this.queryToTagMap_,n)},t.getNextQueryTag_=function(){return t.nextQueryTag_++},t.prototype.applyTaggedOperation_=function(t,e){var n=this.syncPointTree_.get(t);a(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(Et.Empty))},t.prototype.applyOperationHelper_=function(t,e,n,r){if(t.path.isEmpty())return this.applyOperationDescendantsHelper_(t,e,n,r);var i=e.get(Et.Empty);null==n&&null!=i&&(n=i.getCompleteServerCache(Et.Empty));var o=[],s=t.path.getFront(),a=t.operationForChild(s),h=e.children.get(s);if(h&&a){var u=n?n.getImmediateChild(s):null,l=r.child(s);o=o.concat(this.applyOperationHelper_(a,h,u,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(Et.Empty);null==n&&null!=o&&(n=o.getCompleteServerCache(Et.Empty));var s=[];return e.children.inorderTraversal(function(e,o){var a=n?n.getImmediateChild(e):null,h=r.child(e),u=t.operationForChild(e);u&&(s=s.concat(i.applyOperationDescendantsHelper_(u,o,a,h)))}),o&&(s=s.concat(o.applyOperation(t,r,n))),s},t.nextQueryTag_=1,t}(),un=function(){function t(){this.rootNode_=me.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}(),ln=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?(et("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/.',ot(t)},t}(),cn=function(){function t(){this.counters_={}}return t.prototype.incrementCounter=function(t,e){void 0===e&&(e=1),b(this.counters_,t)||(this.counters_[t]=0),this.counters_[t]+=e},t.prototype.get=function(){return p(this.counters_)},t}(),pn=function(){function t(){}return t.getCollection=function(t){var e=t.toString();return this.collections_[e]||(this.collections_[e]=new cn),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}(),dn=function(){function t(t){this.collection_=t,this.last_=null}return t.prototype.get=function(){var t=this.collection_.get(),e=I(t);return this.last_&&T(this.last_,function(t,n){e[t]=e[t]-n}),this.last_=t,e},t}(),fn=1e4,_n=3e4,yn=function(){function t(t,e){this.server_=e,this.statsToReport_={},this.statsListener_=new dn(t);var n=fn+(_n-fn)*Math.random();Ct(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;T(e,function(e,i){i>0&&b(t.statsToReport_,e)&&(n[e]=i,r=!0)}),r&&this.server_.reportStats(n),Ct(this.reportStats_.bind(this),Math.floor(2*Math.random()*3e5))},t}(),vn=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 gn(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)t(r.getPath())?(this.eventLists_[n].raise(),this.eventLists_[n]=null):e=!1}e&&(this.eventLists_=[]),this.recursionDepth_--},t}(),gn=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();J&&et("event: "+e.toString()),gt(n)}}},t.prototype.getPath=function(){return this.path_},t}(),mn=function(){function t(t){this.allowedEvents_=t,this.listeners_={},a(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=this.listeners_[t].slice(),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(this.allowedEvents_.find(function(e){return e===t}),"Unknown event: "+t)},t}(),Cn=function(t){function e(){var e,n,r=t.call(this,["visible"])||this;return"undefined"!=typeof document&&void 0!==document.addEventListener&&(void 0!==document.hidden?(n="visibilitychange",e="hidden"):void 0!==document.mozHidden?(n="mozvisibilitychange",e="mozHidden"):void 0!==document.msHidden?(n="msvisibilitychange",e="msHidden"):void 0!==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 n(e,t),e.getInstance=function(){return new e},e.prototype.getInitialEvent=function(t){return a("visible"===t,"Unknown event type: "+t),[this.visible_]},e}(mn),En=function(t){function e(){var e=t.call(this,["online"])||this;return e.online_=!0,"undefined"==typeof window||void 0===window.addEventListener||f()||(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 n(e,t),e.getInstance=function(){return new e},e.prototype.getInitialEvent=function(t){return a("online"===t,"Unknown event type: "+t),[this.online_]},e.prototype.currentlyOnline=function(){return this.online_},e}(mn),wn=function(){function t(t){this.onMessage_=t,this.pendingResponses=[],this.currentResponseNum=0,this.closeAfterResponse=-1,this.onClose=null}return t.prototype.closeAfter=function(t,e){this.closeAfterResponse=t,this.onClose=e,this.closeAfterResponse<this.currentResponseNum&&(this.onClose(),this.onClose=null)},t.prototype.handleResponse=function(t,e){var n=this;this.pendingResponses[t]=e;for(var r=function(){var t=i.pendingResponses[i.currentResponseNum];delete i.pendingResponses[i.currentResponseNum];for(var e=function(e){t[e]&&gt(function(){n.onMessage_(t[e])})},r=0;r<t.length;++r)e(r);if(i.currentResponseNum===i.closeAfterResponse)return i.onClose&&(i.onClose(),i.onClose=null),"break";i.currentResponseNum++},i=this;this.pendingResponses[this.currentResponseNum];){if("break"===r())break}},t}(),bn="pLPCommand",Sn="pRTLPCB",Tn=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_=nt(t),this.stats_=pn.getCollection(e),this.urlFn=function(t){return e.connectionURL(bt,t)}}return t.prototype.open=function(t,e){var n=this;this.curSegmentNum=0,this.onDisconnect_=e,this.myPacketOrderer=new wn(t),this.isClosed_=!1,this.connectTimeoutTimer_=setTimeout(function(){n.log_("Timed out trying to connect."),n.onClosed_(),n.connectTimeoutTimer_=null},Math.floor(3e4)),function(t){if(_()||"complete"===document.readyState)t();else{var e=!1,n=function(){document.body?e||(e=!0,t()):setTimeout(n,Math.floor(10))};document.addEventListener?(document.addEventListener("DOMContentLoaded",n,!1),window.addEventListener("load",n,!1)):document.attachEvent&&(document.attachEvent("onreadystatechange",function(){"complete"===document.readyState&&n()}),window.attachEvent("onload",n))}}(function(){if(!n.isClosed_){n.scriptTagHolder=new In(function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];var r=t[0],i=t[1],o=t[2];if(n.incrementIncomingBytes_(t),n.scriptTagHolder)if(n.connectTimeoutTimer_&&(clearTimeout(n.connectTimeoutTimer_),n.connectTimeoutTimer_=null),n.everConnected_=!0,"start"==r)n.id=i,n.password=o;else{if("close"!==r)throw new Error("Unrecognized command received: "+r);i?(n.scriptTagHolder.sendNewPolls=!1,n.myPacketOrderer.closeAfter(i,function(){n.onClosed_()})):n.onClosed_()}},function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];var r=t[0],i=t[1];n.incrementIncomingBytes_(t),n.myPacketOrderer.handleResponse(r,i)},function(){n.onClosed_()},n.urlFn);var t={start:"t"};t.ser=Math.floor(1e8*Math.random()),n.scriptTagHolder.uniqueCallbackIdentifier&&(t.cb=n.scriptTagHolder.uniqueCallbackIdentifier),t.v="5",n.transportSessionId&&(t.s=n.transportSessionId),n.lastSessionId&&(t.ls=n.lastSessionId),!_()&&"undefined"!=typeof location&&location.href&&-1!==location.href.indexOf("firebaseio.com")&&(t.r="f");var e=n.urlFn(t);n.log_("Connecting 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 t.forceAllow_||!t.forceDisallow_&&"undefined"!=typeof document&&null!=document.createElement&&!("object"==typeof window&&window.chrome&&window.chrome.extension&&!/^chrome/.test(window.location.href))&&!("object"==typeof Windows&&"object"==typeof Windows.UI)&&!_()},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=E(t);this.bytesSent+=e.length,this.stats_.incrementCounter("bytes_sent",e.length);for(var n,r=(n=u(e),l.encodeByteArray(n,!0)),i=dt(r,1840),o=0;o<i.length;o++)this.scriptTagHolder.enqueueSegment(this.curSegmentNum,i.length,i[o]),this.curSegmentNum++},t.prototype.addDisconnectPingFrame=function(t,e){if(!_()){this.myDisconnFrame=document.createElement("iframe");var n={dframe:"t"};n.id=t,n.pw=e,this.myDisconnFrame.src=this.urlFn(n),this.myDisconnFrame.style.display="none",document.body.appendChild(this.myDisconnFrame)}},t.prototype.incrementIncomingBytes_=function(t){var e=E(t).length;this.bytesReceived+=e,this.stats_.incrementCounter("bytes_received",e)},t}(),In=function(){function t(e,n,r,i){if(this.onDisconnect=r,this.urlFn=i,this.outstandingRequests=new xe,this.pendingSegs=[],this.currentSerial=Math.floor(1e8*Math.random()),this.sendNewPolls=!0,_())this.commandCB=e,this.onMessageCB=n;else{this.uniqueCallbackIdentifier=G(),window[bn+this.uniqueCallbackIdentifier]=e,window[Sn+this.uniqueCallbackIdentifier]=n,this.myIFrame=t.createIFrame_();var o="";if(this.myIFrame.src&&"javascript:"===this.myIFrame.src.substr(0,"javascript:".length))o='<script>document.domain="'+document.domain+'";<\/script>';var s="<html><body>"+o+"</body></html>";try{this.myIFrame.doc.open(),this.myIFrame.doc.write(s),this.myIFrame.doc.close()}catch(t){et("frame writing exception"),t.stack&&et(t.stack),et(t)}}}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{t.contentWindow.document||et("No IE domain setting required")}catch(n){var e=document.domain;t.src="javascript:void((function(){document.open();document.domain='"+e+"';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 e=this;if(this.alive=!1,this.myIFrame&&(this.myIFrame.doc.body.innerHTML="",setTimeout(function(){null!==e.myIFrame&&(document.body.removeChild(e.myIFrame),e.myIFrame=null)},Math.floor(0))),_()&&this.myID){var n={disconn:"t"};n.id=this.myID,n.pw=this.myPW;var r=this.urlFn(n);t.nodeRestRequest(r)}var i=this.onDisconnect;i&&(this.onDisconnect=null,i())},t.prototype.startLongPoll=function(t,e){for(this.myID=t,this.myPW=e,this.alive=!0;this.newRequest_(););},t.prototype.newRequest_=function(){if(this.alive&&this.sendNewPolls&&this.outstandingRequests.count()<(this.pendingSegs.length>0?2:1)){this.currentSerial++;var t={};t.id=this.myID,t.pw=this.myPW,t.ser=this.currentSerial;for(var e=this.urlFn(t),n="",r=0;this.pendingSegs.length>0;){if(!(this.pendingSegs[0].d.length+30+n.length<=1870))break;var i=this.pendingSegs.shift();n=n+"&seg"+r+"="+i.seg+"&ts"+r+"="+i.ts+"&d"+r+"="+i.d,r++}return e+=n,this.addLongPollTag_(e,this.currentSerial),!0}return!1},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,1);var r=function(){n.outstandingRequests.remove(e),n.newRequest_()},i=setTimeout(r,Math.floor(25e3));this.addTag(t,function(){clearTimeout(i),r()})},t.prototype.addTag=function(t,e){var n=this;_()?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(){et("Long-poll script failed to load: "+t),n.sendNewPolls=!1,n.close()},n.myIFrame.doc.body.appendChild(r)}catch(t){}},Math.floor(1))},t}(),Nn=null;"undefined"!=typeof MozWebSocket?Nn=MozWebSocket:"undefined"!=typeof WebSocket&&(Nn=WebSocket);var Rn=function(){function e(t,n,r,i){this.connId=t,this.keepaliveTimer=null,this.frames=null,this.totalFrames=0,this.bytesSent=0,this.bytesReceived=0,this.log_=nt(this.connId),this.stats_=pn.getCollection(n),this.connURL=e.connectionURL_(n,r,i)}return e.connectionURL_=function(t,e,n){var r={v:"5"};return!_()&&"undefined"!=typeof location&&location.href&&-1!==location.href.indexOf("firebaseio.com")&&(r.r="f"),e&&(r.s=e),n&&(r.ls=n),t.connectionURL("websocket",r)},e.prototype.open=function(e,n){var r=this;this.onDisconnect=n,this.onMessage=e,this.log_("Websocket connecting to "+this.connURL),this.everConnected_=!1,K.set("previous_websocket_failure",!0);try{if(_()){var i=o?"AdminNode":"Node",s={headers:{"User-Agent":"Firebase/5/"+t.SDK_VERSION+"/"+process.platform+"/"+i}},a=process.env,h=0==this.connURL.indexOf("wss://")?a.HTTPS_PROXY||a.https_proxy:a.HTTP_PROXY||a.http_proxy;h&&(s.proxy={origin:h}),this.mySock=new Nn(this.connURL,[],s)}else this.mySock=new Nn(this.connURL)}catch(t){this.log_("Error instantiating WebSocket.");var u=t.message||t.data;return u&&this.log_(u),void this.onClosed_()}this.mySock.onopen=function(){r.log_("Websocket connected."),r.everConnected_=!0},this.mySock.onclose=function(){r.log_("Websocket connection was disconnected."),r.mySock=null,r.onClosed_()},this.mySock.onmessage=function(t){r.handleIncomingFrame(t)},this.mySock.onerror=function(t){r.log_("WebSocket error.  Closing connection.");var e=t.message||t.data;e&&r.log_(e),r.onClosed_()}},e.prototype.start=function(){},e.forceDisallow=function(){e.forceDisallow_=!0},e.isAvailable=function(){var t=!1;if("undefined"!=typeof navigator&&navigator.userAgent){var n=navigator.userAgent.match(/Android ([0-9]{0,}\.[0-9]{0,})/);n&&n.length>1&&parseFloat(n[1])<4.4&&(t=!0)}return!t&&null!==Nn&&!e.forceDisallow_},e.previouslyFailed=function(){return K.isInMemoryStorage||!0===K.get("previous_websocket_failure")},e.prototype.markConnectionHealthy=function(){K.remove("previous_websocket_failure")},e.prototype.appendFrame_=function(t){if(this.frames.push(t),this.frames.length==this.totalFrames){var e=this.frames.join("");this.frames=null;var n=C(e);this.onMessage(n)}},e.prototype.handleNewFrameCount_=function(t){this.totalFrames=t,this.frames=[]},e.prototype.extractFrameCount_=function(t){if(a(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},e.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)}}},e.prototype.send=function(t){this.resetKeepAlive();var e=E(t);this.bytesSent+=e.length,this.stats_.incrementCounter("bytes_sent",e.length);var n=dt(e,16384);n.length>1&&this.sendString_(String(n.length));for(var r=0;r<n.length;r++)this.sendString_(n[r])},e.prototype.shutdown_=function(){this.isClosed_=!0,this.keepaliveTimer&&(clearInterval(this.keepaliveTimer),this.keepaliveTimer=null),this.mySock&&(this.mySock.close(),this.mySock=null)},e.prototype.onClosed_=function(){this.isClosed_||(this.log_("WebSocket is closing itself"),this.shutdown_(),this.onDisconnect&&(this.onDisconnect(this.everConnected_),this.onDisconnect=null))},e.prototype.close=function(){this.isClosed_||(this.log_("WebSocket is being closed"),this.shutdown_())},e.prototype.resetKeepAlive=function(){var t=this;clearInterval(this.keepaliveTimer),this.keepaliveTimer=setInterval(function(){t.mySock&&t.sendString_("0"),t.resetKeepAlive()},Math.floor(45e3))},e.prototype.sendString_=function(t){try{this.mySock.send(t)}catch(t){this.log_("Exception thrown from WebSocket.send():",t.message||t.data,"Closing connection."),setTimeout(this.onClosed_.bind(this),0)}},e.responsesRequiredToBeHealthy=2,e.healthyTimeout=3e4,e}(),Pn=function(){function t(t){this.initTransports_(t)}return Object.defineProperty(t,"ALL_TRANSPORTS",{get:function(){return[Tn,Rn]},enumerable:!0,configurable:!0}),t.prototype.initTransports_=function(e){var n=Rn&&Rn.isAvailable(),r=n&&!Rn.previouslyFailed();if(e.webSocketOnly&&(n||ot("wss:// URL used, but browser isn't known to support websockets.  Trying anyway."),r=!0),r)this.transports_=[Rn];else{var i=this.transports_=[];ft(t.ALL_TRANSPORTS,function(t,e){e&&e.isAvailable()&&i.push(e)})}},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}(),Dn=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_=nt("c:"+this.id+":"),this.transportManager_=new Pn(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_=Ct(function(){t.healthyTimeout_=null,t.isHealthy_||(t.conn_&&t.conn_.bytesReceived>102400?(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>10240?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("t"in t){var e=t.t;"a"===e?this.upgradeIfSecondaryHealthy_():"r"===e?(this.log_("Got a reset on secondary, closing it"),this.secondaryConn_.close(),this.tx_!==this.secondaryConn_&&this.rx_!==this.secondaryConn_||this.close()):"o"===e&&(this.log_("got pong on secondary."),this.secondaryResponsesRequired_--,this.upgradeIfSecondaryHealthy_())}},t.prototype.onSecondaryMessageReceived_=function(t){var e=ct("t",t),n=ct("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:"p",d:{}}}))},t.prototype.proceedWithUpgrade_=function(){this.secondaryConn_.start(),this.log_("sending client ack on secondary"),this.secondaryConn_.send({t:"c",d:{t:"a",d:{}}}),this.log_("Ending transmission on primary"),this.conn_.send({t:"c",d:{t:"n",d:{}}}),this.tx_=this.secondaryConn_,this.tryCleanupConnection()},t.prototype.onPrimaryMessageReceived_=function(t){var e=ct("t",t),n=ct("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=ct("t",t);if("d"in t){var n=t.d;if("h"===e)this.onHandshake_(n);else if("n"===e){this.log_("recvd end transmission on primary"),this.rx_=this.secondaryConn_;for(var r=0;r<this.pendingDataMessages.length;++r)this.onDataMessage_(this.pendingDataMessages[r]);this.pendingDataMessages=[],this.tryCleanupConnection()}else"s"===e?this.onConnectionShutdown_(n):"r"===e?this.onReset_(n):"e"===e?rt("Server Error: "+n):"o"===e?(this.log_("got pong on primary."),this.onPrimaryResponse_(),this.sendPingOnPrimaryIfNecessary_()):rt("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),"5"!==n&&ot("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),Ct(function(){e.secondaryConn_&&(e.log_("Timed out trying to upgrade."),e.secondaryConn_.close())},Math.floor(6e4))},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):Ct(function(){n.sendPingOnPrimaryIfNecessary_()},Math.floor(5e3))},t.prototype.sendPingOnPrimaryIfNecessary_=function(){this.isHealthy_||1!==this.state_||(this.log_("sending ping on primary."),this.sendData_({t:"c",d:{t:"p",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()&&(K.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}(),On=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}(),kn=1e3,xn=3e5,Fn=function(e){function r(t,n,i,o,s,a){var h=e.call(this)||this;if(h.repoInfo_=t,h.onDataUpdate_=n,h.onConnectStatus_=i,h.onServerInfoUpdate_=o,h.authTokenProvider_=s,h.authOverride_=a,h.id=r.nextPersistentConnectionId_++,h.log_=nt("p:"+h.id+":"),h.interruptReasons_={},h.listens_={},h.outstandingPuts_=[],h.outstandingPutCount_=0,h.onDisconnectRequestQueue_=[],h.connected_=!1,h.reconnectDelay_=kn,h.maxReconnectDelay_=xn,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,a&&!_())throw new Error("Auth override specified in options, but not supported on non Node.js platforms");return h.scheduleConnect_(0),Cn.getInstance().on("visible",h.onVisible_,h),-1===t.host.indexOf("fblocal")&&En.getInstance().on("online",h.onOnline_,h),h}return n(r,e),r.prototype.sendRequest=function(t,e,n){var r=++this.requestNumber_,i={r:r,a:t,b:e};this.log_(E(i)),a(this.connected_,"sendRequest call when we're not connected not allowed."),this.realtime_.sendRequest(i),n&&(this.requestCBHash_[r]=n)},r.prototype.listen=function(t,e,n,r){var i=t.queryIdentifier(),o=t.path.toString();this.log_("Listen called for "+o+" "+i),this.listens_[o]=this.listens_[o]||{},a(t.getQueryParams().isDefault()||!t.getQueryParams().loadsAllData(),"listen() called for non-default but complete query"),a(!this.listens_[o][i],"listen() called twice for same path/queryId.");var s={onComplete:r,hashFn:e,query:t,tag:n};this.listens_[o][i]=s,this.connected_&&this.sendListen_(s)},r.prototype.sendListen_=function(t){var e=this,n=t.query,i=n.path.toString(),o=n.queryIdentifier();this.log_("Listen on "+i+" for "+o);var s={p:i};t.tag&&(s.q=n.queryObject(),s.t=t.tag),s.h=t.hashFn(),this.sendRequest("q",s,function(s){var a=s.d,h=s.s;r.warnOnListenWarnings_(a,n),(e.listens_[i]&&e.listens_[i][o])===t&&(e.log_("listen response",s),"ok"!==h&&e.removeListen_(i,o),t.onComplete&&t.onComplete(h,a))})},r.warnOnListenWarnings_=function(t,e){if(t&&"object"==typeof t&&b(t,"w")){var n=S(t,"w");if(Array.isArray(n)&&~n.indexOf("no_index")){var r='".indexOn": "'+e.getQueryParams().getIndex().toString()+'"',i=e.path.toString();ot("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.")}}},r.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)},r.prototype.reduceReconnectDelayIfAdminCredential_=function(t){var e;(t&&40===t.length||"object"==typeof(e=w(t).claims)&&!0===e.admin)&&(this.log_("Admin auth credential detected.  Reducing max reconnect time."),this.maxReconnectDelay_=3e4)},r.prototype.tryAuth=function(){var t,e=this;if(this.connected_&&this.authToken_){var n=this.authToken_,r=(t=w(n).claims)&&"object"==typeof t&&t.hasOwnProperty("iat")?"auth":"gauth",i={cred:n};null===this.authOverride_?i.noauth=!0:"object"==typeof this.authOverride_&&(i.authvar=this.authOverride_),this.sendRequest(r,i,function(t){var r=t.s,i=t.d||"error";e.authToken_===n&&("ok"===r?e.invalidAuthTokenCount_=0:e.onAuthRevoked_(r,i))})}},r.prototype.unlisten=function(t,e){var n=t.path.toString(),r=t.queryIdentifier();this.log_("Unlisten called for "+n+" "+r),a(t.getQueryParams().isDefault()||!t.getQueryParams().loadsAllData(),"unlisten() called for non-default but complete query"),this.removeListen_(n,r)&&this.connected_&&this.sendUnlisten_(n,r,t.queryObject(),e)},r.prototype.sendUnlisten_=function(t,e,n,r){this.log_("Unlisten on "+t+" for "+e);var i={p:t};r&&(i.q=n,i.t=r),this.sendRequest("n",i)},r.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})},r.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})},r.prototype.onDisconnectCancel=function(t,e){this.connected_?this.sendOnDisconnect_("oc",t,null,e):this.onDisconnectRequestQueue_.push({pathString:t,action:"oc",data:null,onComplete:e})},r.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))})},r.prototype.put=function(t,e,n,r){this.putInternal("p",t,e,n,r)},r.prototype.merge=function(t,e,n,r){this.putInternal("m",t,e,n,r)},r.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)},r.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)})},r.prototype.reportStats=function(t){var e=this;if(this.connected_){var n={c:t};this.log_("reportStats",n),this.sendRequest("s",n,function(t){if("ok"!==t.s){var n=t.d;e.log_("reportStats","Error sending stats: "+n)}})}},r.prototype.onDataMessage_=function(t){if("r"in t){this.log_("from server: "+E(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)}},r.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):rt("Unrecognized action received from server: "+E(t)+"\nAre you using the latest client?")},r.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)},r.prototype.scheduleConnect_=function(t){var e=this;a(!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))},r.prototype.onVisible_=function(t){t&&!this.visible_&&this.reconnectDelay_===this.maxReconnectDelay_&&(this.log_("Window became visible.  Reducing delay."),this.reconnectDelay_=kn,this.realtime_||this.scheduleConnect_(0)),this.visible_=t},r.prototype.onOnline_=function(t){t?(this.log_("Browser went online."),this.reconnectDelay_=kn,this.realtime_||this.scheduleConnect_(0)):(this.log_("Browser went offline.  Killing connection."),this.realtime_&&this.realtime_.close())},r.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_){(new Date).getTime()-this.lastConnectionEstablishedTime_>3e4&&(this.reconnectDelay_=kn),this.lastConnectionEstablishedTime_=null}}else this.log_("Window isn't visible.  Delaying reconnect."),this.reconnectDelay_=this.maxReconnectDelay_,this.lastConnectionAttemptTime_=(new Date).getTime();var t=(new Date).getTime()-this.lastConnectionAttemptTime_,e=Math.max(0,this.reconnectDelay_-t);e=Math.random()*e,this.log_("Trying to reconnect in "+e+"ms"),this.scheduleConnect_(e),this.reconnectDelay_=Math.min(this.maxReconnectDelay_,1.3*this.reconnectDelay_)}this.onConnectStatus_(!1)},r.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),e=this.onReady_.bind(this),n=this.onRealtimeDisconnect_.bind(this),i=this.id+":"+r.nextConnectionId_++,s=this,h=this.lastSessionId,u=!1,l=null,c=function(){l?l.close():(u=!0,n())};this.realtime_={close:c,sendRequest:function(t){a(l,"sendRequest call when we're not connected not allowed."),l.sendRequest(t)}};var p=this.forceTokenRefresh_;this.forceTokenRefresh_=!1,this.authTokenProvider_.getToken(p).then(function(r){u?et("getToken() completed but was canceled"):(et("getToken() completed. Creating connection."),s.authToken_=r&&r.accessToken,l=new Dn(i,s.repoInfo_,t,e,n,function(t){ot(t+" ("+s.repoInfo_.toString()+")"),s.interrupt("server_kill")},h))}).then(null,function(t){s.log_("Failed to get token: "+t),u||(o&&ot(t),c())})}},r.prototype.interrupt=function(t){et("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_())},r.prototype.resume=function(t){et("Resuming connection for reason: "+t),delete this.interruptReasons_[t],N(this.interruptReasons_)&&(this.reconnectDelay_=kn,this.realtime_||this.scheduleConnect_(0))},r.prototype.handleTimestamp_=function(t){var e=t-(new Date).getTime();this.onServerInfoUpdate_({serverTimeOffset:e})},r.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_=[])},r.prototype.onListenRevoked_=function(t,e){var n;n=e?e.map(function(t){return pt(t)}).join("$"):"default";var r=this.removeListen_(t,n);r&&r.onComplete&&r.onComplete("permission_denied")},r.prototype.removeListen_=function(t,e){var n,r=new Et(t).toString();return void 0!==this.listens_[r]?(n=this.listens_[r][e],delete this.listens_[r][e],0===R(this.listens_[r])&&delete this.listens_[r]):n=void 0,n},r.prototype.onAuthRevoked_=function(t,e){et("Auth token revoked: "+t+"/"+e),this.authToken_=null,this.forceTokenRefresh_=!0,this.realtime_.close(),"invalid_token"!==t&&"permission_denied"!==t||(this.invalidAuthTokenCount_++,this.invalidAuthTokenCount_>=3&&(this.reconnectDelay_=3e4,this.authTokenProvider_.notifyForInvalidToken()))},r.prototype.onSecurityDebugPacket_=function(t){this.securityDebugCallback_?this.securityDebugCallback_(t):"msg"in t&&console.log("FIREBASE: "+t.msg.replace("\n","\nFIREBASE: "))},r.prototype.restoreState_=function(){var t=this;this.tryAuth(),T(this.listens_,function(e,n){T(n,function(e,n){t.sendListen_(n)})});for(var e=0;e<this.outstandingPuts_.length;e++)this.outstandingPuts_[e]&&this.sendPut_(e);for(;this.onDisconnectRequestQueue_.length;){var n=this.onDisconnectRequestQueue_.shift();this.sendOnDisconnect_(n.action,n.pathString,n.data,n.onComplete)}},r.prototype.sendConnectStats_=function(){var e={},n="js";o?n="admin_node":i&&(n="node"),e["sdk."+n+"."+t.SDK_VERSION.replace(/\./g,"-")]=1,f()?e["framework.cordova"]=1:"object"==typeof navigator&&"ReactNative"===navigator.product&&(e["framework.reactnative"]=1),this.reportStats(e)},r.prototype.shouldReconnect_=function(){var t=En.getInstance().currentlyOnline();return N(this.interruptReasons_)&&t},r.nextPersistentConnectionId_=0,r.nextConnectionId_=0,r}(On),An=function(t){function e(e,n,r){var i=t.call(this)||this;return i.repoInfo_=e,i.onDataUpdate_=n,i.authTokenProvider_=r,i.log_=nt("p:rest:"),i.listens_={},i}return n(e,t),e.prototype.reportStats=function(t){throw new Error("Method not implemented.")},e.getListenId_=function(t,e){return void 0!==e?"tag$"+e:(a(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 a=e.getListenId_(t,r),h={};this.listens_[a]=h;var u=t.getQueryParams().toRestQueryStringParameters();this.restRequest_(s+".json",u,function(t,e){var n=e;(404===t&&(n=null,t=null),null===t&&o.onDataUpdate_(s,n,!1,r),S(o.listens_,a)===h)&&i(t?401==t?"permission_denied":"rest_error:"+t:"ok",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,a=(r.repoInfo_.secure?"https://":"http://")+r.repoInfo_.host+t+"?"+(s=[],T(e,function(t,e){Array.isArray(e)?e.forEach(function(e){s.push(encodeURIComponent(t)+"="+encodeURIComponent(e))}):s.push(encodeURIComponent(t)+"="+encodeURIComponent(e))}),s.length?"&"+s.join("&"):"");r.log_("Sending REST request for "+a);var h=new XMLHttpRequest;h.onreadystatechange=function(){if(n&&4===h.readyState){r.log_("REST Response for "+a+" received. status:",h.status,"response:",h.responseText);var t=null;if(h.status>=200&&h.status<300){try{t=C(h.responseText)}catch(t){ot("Failed to parse JSON response for "+a+": "+h.responseText)}n(null,t)}else 401!==h.status&&404!==h.status&&ot("Got unsuccessful REST response for "+a+" Status: "+h.status),n(h.status);n=null}},h.open("GET",a,!0),h.send()})},e}(On),Ln=function(){function t(t,e,n){var r=this;this.repoInfo_=t,this.app=n,this.dataUpdateCount=0,this.statsListener_=null,this.eventQueue_=new vn,this.nextWriteId_=1,this.interceptServerDataCallback_=null,this.onDisconnect_=new Fe,this.persistentConnection_=null;var i=new ln(n);if(this.stats_=pn.getCollection(t),e||mt())this.server_=new An(this.repoInfo_,this.onDataUpdate_.bind(this),i),setTimeout(this.onConnectStatus_.bind(this,!0),0);else{var o=n.options.databaseAuthVariableOverride;if(void 0!==o&&null!==o){if("object"!=typeof o)throw new Error("Only objects are supported for option databaseAuthVariableOverride");try{E(o)}catch(t){throw new Error("Invalid authOverride provided: "+t)}}this.persistentConnection_=new Fn(this.repoInfo_,this.onDataUpdate_.bind(this),this.onConnectStatus_.bind(this),this.onServerInfoUpdate_.bind(this),i,o),this.server_=this.persistentConnection_}i.addTokenChangeListener(function(t){r.server_.refreshAuthToken(t)}),this.statsReporter_=pn.getOrCreateReporter(t,function(){return new yn(r.stats_,r.server_)}),this.transactions_init_(),this.infoData_=new un,this.infoSyncTree_=new hn({startListening:function(t,e,n,i){var o=[],s=r.infoData_.getNode(t.path);return s.isEmpty()||(o=r.infoSyncTree_.applyServerOverwrite(t.path,s),setTimeout(function(){i("ok")},0)),o},stopListening:function(){}}),this.updateInfo_("connected",!1),this.serverSyncTree_=new hn({startListening:function(t,e,n,i){return r.server_.listen(t,n,e,function(e,n){var o=i(e,n);r.eventQueue_.raiseEventsForChangedPath(t.path,o)}),[]},stopListening:function(t,e){r.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 Et(".info/serverTimeOffset")).val()||0;return(new Date).getTime()+t},t.prototype.generateServerValues=function(){return(t=(t={timestamp:this.serverTime()})||{}).timestamp=t.timestamp||(new Date).getTime(),t;var t},t.prototype.onDataUpdate_=function(t,e,n,r){this.dataUpdateCount++;var i=new Et(t);e=this.interceptServerDataCallback_?this.interceptServerDataCallback_(t,e):e;var o=[];if(r)if(n){var s=P(e,function(t){return we(t)});o=this.serverSyncTree_.applyTaggedQueryMerge(i,s,r)}else{var a=we(e);o=this.serverSyncTree_.applyTaggedQueryOverwrite(i,a,r)}else if(n){var h=P(e,function(t){return we(t)});o=this.serverSyncTree_.applyServerMerge(i,h)}else{var u=we(e);o=this.serverSyncTree_.applyServerOverwrite(i,u)}var l=i;o.length>0&&(l=this.rerunTransactions_(i)),this.eventQueue_.raiseEventsForChangedPath(l,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;ft(t,function(t,n){e.updateInfo_(n,t)})},t.prototype.updateInfo_=function(t,e){var n=new Et("/.info/"+t),r=we(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=we(e,n),a=Le(s,o),h=this.getNextWriteId_(),u=this.serverSyncTree_.applyUserOverwrite(t,a,h,!0);this.eventQueue_.queueEvents(u),this.server_.put(t.toString(),s.val(!0),function(e,n){var o="ok"===e;o||ot("set at "+t+" failed: "+e);var s=i.serverSyncTree_.ackUserWrite(h,!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(T(e,function(t,e){i=!1;var n=we(e);s[t]=Le(n,o)}),i)et("update() called with empty data.  Don't do anything."),this.callOnCompleteCallback(n,"ok");else{var a=this.getNextWriteId_(),h=this.serverSyncTree_.applyUserMerge(t,s,a);this.eventQueue_.queueEvents(h),this.server_.merge(t.toString(),e,function(e,i){var o="ok"===e;o||ot("update at "+t+" failed: "+e);var s=r.serverSyncTree_.ackUserWrite(a,!o),h=s.length>0?r.rerunTransactions_(t):t;r.eventQueue_.raiseEventsForChangedPath(h,s),r.callOnCompleteCallback(n,e,i)}),T(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=[];(function(t,e){var n=new Fe;return t.forEachTree(new Et(""),function(t,r){n.remember(t,Le(r,e))}),n})(this.onDisconnect_,e).forEachTree(Et.Empty,function(e,r){n=n.concat(t.serverSyncTree_.applyServerOverwrite(e,r));var i=t.abortTransactions_(e);t.rerunTransactions_(i)}),this.onDisconnect_=new Fe,this.eventQueue_.raiseEventsForChangedPath(Et.Empty,n)},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=we(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=we(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(N(e))return et("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&&T(e,function(e,n){var i=we(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("repo_interrupt")},t.prototype.resume=function(){this.persistentConnection_&&this.persistentConnection_.resume("repo_interrupt")},t.prototype.stats=function(t){if(void 0===t&&(t=!1),"undefined"!=typeof console){var e;t?(this.statsListener_||(this.statsListener_=new dn(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);T(e,function(t,e){for(var r=t.length;r<n+2;r++)t+=" ";console.log(t+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+":"),et.apply(void 0,[n].concat(t))},t.prototype.callOnCompleteCallback=function(t,e,n){t&&gt(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 Kn(this))},enumerable:!0,configurable:!0}),t}(),Mn=function(){function t(e){this.indexedFilter_=new Ge(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 Gt(e,n))||(n=me.EMPTY_NODE),this.indexedFilter_.updateChild(t,e,n,r,i,o)},t.prototype.updateFullNode=function(t,e,n){e.isLeafNode()&&(e=me.EMPTY_NODE);var r=e.withIndex(this.index_);r=r.updatePriority(me.EMPTY_NODE);var i=this;return e.forEachChild(ae,function(t,e){i.matches(new Gt(t,e))||(r=r.updateImmediateChild(t,me.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}(),Wn=function(){function t(t){this.rangedFilter_=new Mn(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 Gt(e,n))||(n=me.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=me.EMPTY_NODE.withIndex(this.index_);else if(2*this.limit_<e.numChildren()&&e.isIndexed(this.index_)){r=me.EMPTY_NODE.withIndex(this.index_);var i=void 0;i=this.reverse_?e.getReverseIteratorFrom(this.rangedFilter_.getEndPost(),this.index_):e.getIteratorFrom(this.rangedFilter_.getStartPost(),this.index_);for(var o=0;i.hasNext()&&o<this.limit_;){var s=i.getNext();if(!(this.reverse_?this.index_.compare(this.rangedFilter_.getStartPost(),s)<=0:this.index_.compare(s,this.rangedFilter_.getEndPost())<=0))break;r=r.updateImmediateChild(s.name,s.node),o++}}else{r=(r=e.withIndex(this.index_)).updatePriority(me.EMPTY_NODE);var a=void 0,h=void 0,u=void 0;i=void 0;if(this.reverse_){i=r.getReverseIterator(this.index_),a=this.rangedFilter_.getEndPost(),h=this.rangedFilter_.getStartPost();var l=this.index_.getCompare();u=function(t,e){return l(e,t)}}else i=r.getIterator(this.index_),a=this.rangedFilter_.getStartPost(),h=this.rangedFilter_.getEndPost(),u=this.index_.getCompare();o=0;for(var c=!1;i.hasNext();){s=i.getNext();!c&&u(a,s)<=0&&(c=!0),c&&o<this.limit_&&u(s,h)<=0?o++:r=r.updateImmediateChild(s.name,me.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 h=t;a(h.numChildren()==this.limit_,"");var u=new Gt(e,n),l=this.reverse_?h.getFirstChild(this.index_):h.getLastChild(this.index_),c=this.rangedFilter_.matches(u);if(h.hasChild(e)){for(var p=h.getImmediateChild(e),d=r.getChildAfterChild(this.index_,l,this.reverse_);null!=d&&(d.name==e||h.hasChild(d.name));)d=r.getChildAfterChild(this.index_,d,this.reverse_);var f=null==d?1:o(d,u);if(c&&!n.isEmpty()&&f>=0)return null!=i&&i.trackChildChange(ze.childChangedChange(e,n,p)),h.updateImmediateChild(e,n);null!=i&&i.trackChildChange(ze.childRemovedChange(e,p));var _=h.updateImmediateChild(e,me.EMPTY_NODE);return null!=d&&this.rangedFilter_.matches(d)?(null!=i&&i.trackChildChange(ze.childAddedChange(d.name,d.node)),_.updateImmediateChild(d.name,d.node)):_}return n.isEmpty()?t:c&&o(l,u)>=0?(null!=i&&(i.trackChildChange(ze.childRemovedChange(l.name,l.node)),i.trackChildChange(ze.childAddedChange(e,n))),h.updateImmediateChild(e,n).updateImmediateChild(l.name,me.EMPTY_NODE)):t},t}(),qn=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_=ae}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(this.startSet_,"Only valid if start has been set"),this.indexStartValue_},t.prototype.getIndexStartName=function(){return a(this.startSet_,"Only valid if start has been set"),this.startNameSet_?this.indexStartName_:at},t.prototype.hasEnd=function(){return this.endSet_},t.prototype.getIndexEndValue=function(){return a(this.endSet_,"Only valid if end has been set"),this.indexEndValue_},t.prototype.getIndexEndName=function(){return a(this.endSet_,"Only valid if end has been set"),this.endNameSet_?this.indexEndName_:ht},t.prototype.hasLimit=function(){return this.limitSet_},t.prototype.hasAnchoredLimit=function(){return this.limitSet_&&""!==this.viewFrom_},t.prototype.getLimit=function(){return a(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_!==ae&&(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_==ae},t.prototype.getNodeFilter=function(){return this.loadsAllData()?new Ge(this.getIndex()):this.hasLimit()?new Wn(this):new Mn(this)},t.prototype.toRestQueryStringParameters=function(){var e,n=t.REST_QUERY_CONSTANTS_,r={};return this.isDefault()?r:(this.index_===ae?e=n.PRIORITY_INDEX:this.index_===Te?e=n.VALUE_INDEX:this.index_===Jt?e=n.KEY_INDEX:(a(this.index_ instanceof Ie,"Unrecognized index type!"),e=this.index_.toString()),r[n.ORDER_BY]=E(e),this.startSet_&&(r[n.START_AT]=E(this.indexStartValue_),this.startNameSet_&&(r[n.START_AT]+=","+E(this.indexStartName_))),this.endSet_&&(r[n.END_AT]=E(this.indexEndValue_),this.endNameSet_&&(r[n.END_AT]+=","+E(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:"$key",START_AT:"startAt",END_AT:"endAt",LIMIT_TO_FIRST:"limitToFirst",LIMIT_TO_LAST:"limitToLast"},t.DEFAULT=new t,t}(),Qn=function(t){function e(e,n){if(!(e instanceof Ln))throw new Error("new Reference() no longer supported - use app.database().");return t.call(this,e,n,qn.DEFAULT,!1)||this}return n(e,t),e.prototype.getKey=function(){return x("Reference.key",0,0,arguments.length),this.path.isEmpty()?null:this.path.getBack()},e.prototype.child=function(t){return x("Reference.child",1,1,arguments.length),"number"==typeof t?t=String(t):t instanceof Et||(null===this.path.getFront()?function(t,e,n,r){n&&(n=n.replace(/^\/*\.info(\/|$)/,"/")),Ht(t,e,n,r)}("Reference.child",1,t,!1):Ht("Reference.child",1,t,!1)),new e(this.repo,this.path.child(t))},e.prototype.getParent=function(){x("Reference.parent",0,0,arguments.length);var t=this.path.parent();return null===t?null:new e(this.repo,t)},e.prototype.getRoot=function(){x("Reference.root",0,0,arguments.length);for(var t=this;null!==t.getParent();)t=t.getParent();return t},e.prototype.databaseProp=function(){return this.repo.database},e.prototype.set=function(t,e){x("Reference.set",1,2,arguments.length),Bt("Reference.set",this.path),Mt("Reference.set",1,t,this.path,!1),A("Reference.set",2,e,!0);var n=new d;return this.repo.setWithPriority(this.path,t,null,n.wrapCallback(e)),n.promise},e.prototype.update=function(t,e){if(x("Reference.update",1,2,arguments.length),Bt("Reference.update",this.path),Array.isArray(t)){for(var n={},r=0;r<t.length;++r)n[""+r]=t[r];t=n,ot("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.")}qt("Reference.update",1,t,this.path,!1),A("Reference.update",2,e,!0);var i=new d;return this.repo.update(this.path,t,i.wrapCallback(e)),i.promise},e.prototype.setWithPriority=function(t,e,n){if(x("Reference.setWithPriority",2,3,arguments.length),Bt("Reference.setWithPriority",this.path),Mt("Reference.setWithPriority",1,t,this.path,!1),Qt("Reference.setWithPriority",2,e,!1),A("Reference.setWithPriority",3,n,!0),".length"===this.getKey()||".keys"===this.getKey())throw"Reference.setWithPriority failed: "+this.getKey()+" is a read-only object.";var r=new d;return this.repo.setWithPriority(this.path,t,e,r.wrapCallback(n)),r.promise},e.prototype.remove=function(t){return x("Reference.remove",0,1,arguments.length),Bt("Reference.remove",this.path),A("Reference.remove",1,t,!0),this.set(null,t)},e.prototype.transaction=function(t,e,n){if(x("Reference.transaction",1,3,arguments.length),Bt("Reference.transaction",this.path),A("Reference.transaction",1,t,!1),A("Reference.transaction",2,e,!0),function(t,e,n,r){if((!r||void 0!==n)&&"boolean"!=typeof n)throw new Error(F(t,e,r)+"must be a boolean.")}("Reference.transaction",3,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 d;"function"==typeof e&&r.promise.catch(function(){});return this.repo.startTransaction(this.path,t,function(t,n,i){t?r.reject(t):r.resolve(new Yt(n,i)),"function"==typeof e&&e(t,n,i)},n),r.promise},e.prototype.setPriority=function(t,e){x("Reference.setPriority",1,2,arguments.length),Bt("Reference.setPriority",this.path),Qt("Reference.setPriority",1,t,!1),A("Reference.setPriority",2,e,!0);var n=new d;return this.repo.setWithPriority(this.path.child(".priority"),t,null,n.wrapCallback(e)),n.promise},e.prototype.push=function(t,e){x("Reference.push",0,2,arguments.length),Bt("Reference.push",this.path),Mt("Reference.push",1,t,this.path,!0),A("Reference.push",2,e,!0);var n,r=this.repo.serverTime(),i=zt(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 Bt("Reference.onDisconnect",this.path),new Kt(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}(ke);ke.__referenceConstructor=Qn,rn.__referenceConstructor=Qn;var Un,Vn=function(){return function(){this.children={},this.childCount=0,this.value=null}}(),Hn=function(){function t(t,e,n){void 0===t&&(t=""),void 0===e&&(e=null),void 0===n&&(n=new Vn),this.name_=t,this.parent_=e,this.node_=n}return t.prototype.subTree=function(e){for(var n,r=e instanceof Et?e:new Et(e),i=this;null!==(n=r.getFront());){i=new t(n,i,S(i.node_.children,n)||new Vn),r=r.popFront()}return i},t.prototype.getValue=function(){return this.node_.value},t.prototype.setValue=function(t){a(void 0!==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;T(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){for(var n=e?this:this.parent();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 Et(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=b(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"}(Un||(Un={})),Ln.MAX_TRANSACTION_RETRIES_=25,Ln.prototype.transactions_init_=function(){this.transactionQueueTree_=new Hn},Ln.prototype.startTransaction=function(t,e,n,r){this.log_("transaction on "+t);var i=function(){},o=new Qn(this,t);o.on("value",i);var s={path:t,update:e,onComplete:n,status:null,order:G(),applyLocally:r,retryCount:0,unwatcher:function(){o.off("value",i)},abortReason:null,currentWriteId:null,currentInputSnapshot:null,currentOutputSnapshotRaw:null,currentOutputSnapshotResolved:null},h=this.getLatestState_(t);s.currentInputSnapshot=h;var u=s.update(h.val());if(void 0===u){if(s.unwatcher(),s.currentOutputSnapshotRaw=null,s.currentOutputSnapshotResolved=null,s.onComplete){var l=new Ne(s.currentInputSnapshot,new Qn(this,s.path),ae);s.onComplete(null,!1,l)}}else{Wt("transaction failed: Data returned ",u,s.path),s.status=Un.RUN;var c=this.transactionQueueTree_.subTree(t),p=c.getValue()||[];p.push(s),c.setValue(p);var d=void 0;if("object"==typeof u&&null!==u&&b(u,".priority"))d=S(u,".priority"),a(Lt(d),"Invalid priority returned by transaction. Priority must be a valid string, finite number, server value, or null.");else d=(this.serverSyncTree_.calcCompleteEventCache(t)||me.EMPTY_NODE).getPriority().val();d=d;var f=this.generateServerValues(),_=we(u,d),y=Le(_,f);s.currentOutputSnapshotRaw=_,s.currentOutputSnapshotResolved=y,s.currentWriteId=this.getNextWriteId_();var v=this.serverSyncTree_.applyUserOverwrite(t,y,s.currentWriteId,s.applyLocally);this.eventQueue_.raiseEventsForChangedPath(t,v),this.sendReadyTransactions_()}},Ln.prototype.getLatestState_=function(t,e){return this.serverSyncTree_.calcCompleteEventCache(t,e)||me.EMPTY_NODE},Ln.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(n.length>0,"Sending zero length transaction queue"),n.every(function(t){return t.status===Un.RUN})&&this.sendTransactionQueue_(t.path(),n)}else t.hasChildren()&&t.forEachChild(function(t){e.sendReadyTransactions_(t)})},Ln.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(),h=0;h<e.length;h++){var u=e[h];a(u.status===Un.RUN,"tryToSendTransactionQueue_: items in queue should all be run."),u.status=Un.SENT,u.retryCount++;var l=Et.relativePath(t,u.path);o=o.updateChild(l,u.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=Un.COMPLETED,i=i.concat(n.serverSyncTree_.ackUserWrite(e[s].currentWriteId)),e[s].onComplete){var a=e[s].currentOutputSnapshotResolved,h=new Qn(n,e[s].path),u=new Ne(a,h,ae);o.push(e[s].onComplete.bind(null,null,!0,u))}e[s].unwatcher()}n.pruneCompletedTransactionsBelowNode_(n.transactionQueueTree_.subTree(t)),n.sendReadyTransactions_(),n.eventQueue_.raiseEventsForChangedPath(t,i);for(s=0;s<o.length;s++)gt(o[s])}else{if("datastale"===r)for(s=0;s<e.length;s++)e[s].status===Un.SENT_NEEDS_ABORT?e[s].status=Un.NEEDS_ABORT:e[s].status=Un.RUN;else{ot("transaction at "+p.toString()+" failed: "+r);for(s=0;s<e.length;s++)e[s].status=Un.NEEDS_ABORT,e[s].abortReason=r}n.rerunTransactions_(t)}},s)},Ln.prototype.rerunTransactions_=function(t){var e=this.getAncestorTransactionNode_(t),n=e.path(),r=this.buildTransactionQueue_(e);return this.rerunTransactionQueue_(r,n),n},Ln.prototype.rerunTransactionQueue_=function(t,e){if(0!==t.length){for(var n,r=[],i=[],o=t.filter(function(t){return t.status===Un.RUN}).map(function(t){return t.currentWriteId}),s=0;s<t.length;s++){var h=t[s],u=Et.relativePath(e,h.path),l=!1,c=void 0;if(a(null!==u,"rerunTransactionsUnderNode_: relativePath should not be null."),h.status===Un.NEEDS_ABORT)l=!0,c=h.abortReason,i=i.concat(this.serverSyncTree_.ackUserWrite(h.currentWriteId,!0));else if(h.status===Un.RUN)if(h.retryCount>=Ln.MAX_TRANSACTION_RETRIES_)l=!0,c="maxretry",i=i.concat(this.serverSyncTree_.ackUserWrite(h.currentWriteId,!0));else{var p=this.getLatestState_(h.path,o);h.currentInputSnapshot=p;var d=t[s].update(p.val());if(void 0!==d){Wt("transaction failed: Data returned ",d,h.path);var f=we(d);"object"==typeof d&&null!=d&&b(d,".priority")||(f=f.updatePriority(p.getPriority()));var _=h.currentWriteId,y=this.generateServerValues(),v=Le(f,y);h.currentOutputSnapshotRaw=f,h.currentOutputSnapshotResolved=v,h.currentWriteId=this.getNextWriteId_(),o.splice(o.indexOf(_),1),i=(i=i.concat(this.serverSyncTree_.applyUserOverwrite(h.path,v,h.currentWriteId,h.applyLocally))).concat(this.serverSyncTree_.ackUserWrite(_,!0))}else l=!0,c="nodata",i=i.concat(this.serverSyncTree_.ackUserWrite(h.currentWriteId,!0))}if(this.eventQueue_.raiseEventsForChangedPath(e,i),i=[],l&&(t[s].status=Un.COMPLETED,n=t[s].unwatcher,setTimeout(n,Math.floor(0)),t[s].onComplete))if("nodata"===c){var g=new Qn(this,t[s].path),m=t[s].currentInputSnapshot,C=new Ne(m,g,ae);r.push(t[s].onComplete.bind(null,null,!1,C))}else r.push(t[s].onComplete.bind(null,new Error(c),!1,null))}this.pruneCompletedTransactionsBelowNode_(this.transactionQueueTree_);for(s=0;s<r.length;s++)gt(r[s]);this.sendReadyTransactions_()}},Ln.prototype.getAncestorTransactionNode_=function(t){for(var e,n=this.transactionQueueTree_;null!==(e=t.getFront())&&null===n.getValue();)n=n.subTree(e),t=t.popFront();return n},Ln.prototype.buildTransactionQueue_=function(t){var e=[];return this.aggregateTransactionQueuesForNode_(t,e),e.sort(function(t,e){return t.order-e.order}),e},Ln.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)})},Ln.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!==Un.COMPLETED&&(n[r]=n[i],r++);n.length=r,t.setValue(n.length>0?n:null)}t.forEachChild(function(t){e.pruneCompletedTransactionsBelowNode_(t)})},Ln.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},Ln.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===Un.SENT_NEEDS_ABORT);else if(e[o].status===Un.SENT)a(i===o-1,"All SENT items should be at beginning of queue."),i=o,e[o].status=Un.SENT_NEEDS_ABORT,e[o].abortReason="set";else if(a(e[o].status===Un.RUN,"Unexpected transaction status in abort"),e[o].unwatcher(),r=r.concat(this.serverSyncTree_.ackUserWrite(e[o].currentWriteId,!0)),e[o].onComplete){n.push(e[o].onComplete.bind(null,new Error("set"),!1,null))}-1===i?t.setValue(null):e.length=i+1,this.eventQueue_.raiseEventsForChangedPath(t.path(),r);for(o=0;o<n.length;o++)gt(n[o])}};var Bn,jn=function(){function t(){this.repos_={},this.useRestClient_=!1}return t.getInstance=function(){return Bn||(Bn=new t),Bn},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.databaseURL;void 0===n&&it("Can't determine Firebase Database URL.  Be sure to include databaseURL option when calling firebase.initializeApp().");var r=Dt(n),i=r.repoInfo;return jt("Invalid Firebase Database URL",1,r),r.path.isEmpty()||it("Database URL must point to the root of a Firebase Database (not including a child path)."),this.createRepo(i,t).database},t.prototype.deleteRepo=function(t){var e=S(this.repos_,t.app.name);e&&S(e,t.repoInfo_.toURLString())===t||it("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=S(this.repos_,e.name);n||(n={},this.repos_[e.name]=n);var r=S(n,t.toURLString());return r&&it("Database initialized multiple times. Please make sure the format of the database URL matches with each database() call."),r=new Ln(t,this.useRestClient_,e),n[t.toURLString()]=r,r},t.prototype.forceRestClient=function(t){this.useRestClient_=t},t}(),Kn=function(){function t(t){this.repo_=t,t instanceof Ln||it("Don't call new Database() directly - please use firebase.database()."),this.root_=new Qn(t,Et.Empty),this.INTERNAL=new Yn(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"),x("database.ref",0,1,arguments.length),t instanceof Qn?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),x(e,1,1,arguments.length);var n=Dt(t);jt(e,1,n);var r=n.repoInfo;return r.host!==this.repo_.repoInfo_.host&&it(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_&&it("Cannot call "+t+" on a deleted database.")},t.prototype.goOffline=function(){x("database.goOffline",0,0,arguments.length),this.checkDeleted_("goOffline"),this.repo_.interrupt()},t.prototype.goOnline=function(){x("database.goOnline",0,0,arguments.length),this.checkDeleted_("goOnline"),this.repo_.resume()},t.ServerValue={TIMESTAMP:{".sv":"timestamp"}},t}(),Yn=function(){function t(t){this.database=t}return t.prototype.delete=function(){return t=this,e=void 0,i=function(){return r(this,function(t){return this.database.checkDeleted_("delete"),jn.getInstance().deleteRepo(this.database.repo_),this.database.repo_=null,this.database.root_=null,this.database.INTERNAL=null,this.database=null,[2]})},new((n=void 0)||(n=Promise))(function(r,o){function s(t){try{h(i.next(t))}catch(t){o(t)}}function a(t){try{h(i.throw(t))}catch(t){o(t)}}function h(t){t.done?r(t.value):new n(function(e){e(t.value)}).then(s,a)}h((i=i.apply(t,e||[])).next())});var t,e,n,i},t}(),zn=Object.freeze({forceLongPolling:function(){Rn.forceDisallow(),Tn.forceAllow()},forceWebSockets:function(){Tn.forceDisallow()},isWebSocketsAvailable:function(){return Rn.isAvailable()},setSecurityDebugCallback:function(t,e){t.repo.persistentConnection_.securityDebugCallback_=e},stats:function(t,e){t.repo.stats(e)},statsIncrementCounter:function(t,e){t.repo.statsIncrementCounter(e)},dataUpdateCount:function(t){return t.repo.dataUpdateCount},interceptServerData:function(t,e){return t.repo.interceptServerData_(e)}}),Gn=Fn;Fn.prototype.simpleListen=function(t,e){this.sendRequest("q",{p:t},e)},Fn.prototype.echo=function(t,e){this.sendRequest("echo",{d:t},e)};var Xn,$n=Dn,Jn=St,Zn=Object.freeze({DataConnection:Gn,RealTimeConnection:$n,hijackHash:function(t){var e=Fn.prototype.put;return Fn.prototype.put=function(n,r,i,o){void 0!==o&&(o=t()),e.call(this,n,r,i,o)},function(){Fn.prototype.put=e}},ConnectionTarget:Jn,queryIdentifier:function(t){return t.queryIdentifier()},listens:function(t){return t.repo.persistentConnection_.listens_},forceRestClient:function(t){jn.getInstance().forceRestClient(t)}}),tr=Kn.ServerValue;Xn=t.INTERNAL.registerService("database",function(t,e,n){return jn.getInstance().databaseFromApp(t,n)},{Reference:Qn,Query:ke,Database:Kn,enableLogging:tt,INTERNAL:zn,ServerValue:tr,TEST_ACCESS:Zn},null,!0),_()&&(module.exports=Xn)}).apply(this,arguments)}catch(t){throw console.error(t),new Error("Cannot instantiate firebase-database - be sure to load firebase-app.js first.")}});
//# sourceMappingURL=firebase-database.js.map