musix-oss/node_modules/firebase/firebase-database.js

!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(require("@firebase/app")):"function"==typeof define&&define.amd?define(["@firebase/app"],e):e((t=t||self).firebase)}(this,function(Vi){"use strict";try{(function(){Vi=Vi&&Vi.hasOwnProperty("default")?Vi.default:Vi;var r=function(t,e){return(r=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])})(t,e)};function t(t,e){function n(){this.constructor=t}r(t,e),t.prototype=null===e?Object.create(e):(n.prototype=e.prototype,new n)}var u=function(){return(u=Object.assign||function(t){for(var e,n=1,r=arguments.length;n<r;n++)for(var i in e=arguments[n])Object.prototype.hasOwnProperty.call(e,i)&&(t[i]=e[i]);return t}).apply(this,arguments)};function e(n,r){var i,o,s,t,a={label:0,sent:function(){if(1&s[0])throw s[1];return s[1]},trys:[],ops:[]};return t={next:e(0),throw:e(1),return:e(2)},"function"==typeof Symbol&&(t[Symbol.iterator]=function(){return this}),t;function e(e){return function(t){return function(e){if(i)throw new TypeError("Generator is already executing.");for(;a;)try{if(i=1,o&&(s=2&e[0]?o.return:e[0]?o.throw||((s=o.return)&&s.call(o),0):o.next)&&!(s=s.call(o,e[1])).done)return s;switch(o=0,s&&(e=[2&e[0],s.value]),e[0]){case 0:case 1:s=e;break;case 4:return a.label++,{value:e[1],done:!1};case 5:a.label++,o=e[1],e=[0];continue;case 7:e=a.ops.pop(),a.trys.pop();continue;default:if(!(s=0<(s=a.trys).length&&s[s.length-1])&&(6===e[0]||2===e[0])){a=0;continue}if(3===e[0]&&(!s||e[1]>s[0]&&e[1]<s[3])){a.label=e[1];break}if(6===e[0]&&a.label<s[1]){a.label=s[1],s=e;break}if(s&&a.label<s[2]){a.label=s[2],a.ops.push(e);break}s[2]&&a.ops.pop(),a.trys.pop();continue}e=r.call(n,a)}catch(t){e=[6,t],o=0}finally{i=s=0}if(5&e[0])throw e[1];return{value:e[0]?e[1]:void 0,done:!0}}([e,t])}}}function f(t){var e="function"==typeof Symbol&&t[Symbol.iterator],n=0;return e?e.call(t):{next:function(){return t&&n>=t.length&&(t=void 0),{value:t&&t[n++],done:!t}}}}function _(t,e){var n="function"==typeof Symbol&&t[Symbol.iterator];if(!n)return t;var r,i,o=n.call(t),s=[];try{for(;(void 0===e||0<e--)&&!(r=o.next()).done;)s.push(r.value)}catch(t){i={error:t}}finally{try{r&&!r.done&&(n=o.return)&&n.call(o)}finally{if(i)throw i.error}}return s}function o(){for(var t=[],e=0;e<arguments.length;e++)t=t.concat(_(arguments[e]));return t}function s(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:(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>>12|224,e[n++]=i>>6&63|128),e[n++]=63&i|128)}return e}function a(t){try{return l.decodeString(t,!0)}catch(t){console.error("base64Decode failed: ",t)}return null}var h={NODE_CLIENT:!1,NODE_ADMIN:!1,SDK_VERSION:"${JSCORE_VERSION}"},C=function(t,e){if(!t)throw c(e)},c=function(t){return new Error("Firebase Database ("+h.SDK_VERSION+") INTERNAL ASSERT FAILED: "+t)},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,l=h?t[i+2]:0,u=o>>2,c=(3&o)<<4|a>>4,p=(15&a)<<2|l>>6,d=63&l;h||(d=64,s||(p=64)),r.push(n[u],n[c],n[p],n[d])}return r.join("")},encodeString:function(t,e){return this.HAS_NATIVE_SUPPORT&&!e?btoa(t):this.encodeByteArray(s(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(191<i&&i<224){var o=t[n++];e[r++]=String.fromCharCode((31&i)<<6|63&o)}else if(239<i&&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 l=o<<2|s>>4;if(r.push(l),64!==a){var u=s<<4&240|a>>2;if(r.push(u),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)>=this.ENCODED_VALS_BASE.length&&(this.charToByteMap_[this.ENCODED_VALS_WEBSAFE.charAt(t)]=t,this.charToByteMapWebSafe_[this.ENCODED_VALS.charAt(t)]=t)}}};function n(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 p=(i.prototype.wrapCallback=function(n){var r=this;return function(t,e){t?r.reject(t):r.resolve(e),"function"==typeof n&&(r.promise.catch(function(){}),1===n.length?n(t):n(t,e))}},i);function i(){var n=this;this.reject=function(){},this.resolve=function(){},this.promise=new Promise(function(t,e){n.resolve=t,n.reject=e})}function d(){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 y(){return!0===h.NODE_ADMIN}var v,g=(t(m,v=Error),m);function m(t,e){var n=v.call(this,e)||this;return n.code=t,n.name="FirebaseError",Object.setPrototypeOf(n,m.prototype),Error.captureStackTrace&&Error.captureStackTrace(n,E.prototype.create),n}var E=(w.prototype.create=function(t){for(var e=[],n=1;n<arguments.length;n++)e[n-1]=arguments[n];for(var r=e[0]||{},i=this.service+"/"+t,o=this.errors[t],s=o?function(t,r){return t.replace(b,function(t,e){var n=r[e];return null!=n?n.toString():"<"+e+"?>"})}(o,r):"Error",a=this.serviceName+": "+s+" ("+i+").",h=new g(i,a),l=0,u=Object.keys(r);l<u.length;l++){var c=u[l];"_"!==c.slice(-1)&&(c in h&&console.warn('Overwriting FirebaseError base field "'+c+'" can cause unexpected behavior.'),h[c]=r[c])}return h},w);function w(t,e,n){this.service=t,this.serviceName=e,this.errors=n}var b=/\{\$([^}]+)}/g;function S(t){return JSON.parse(t)}function T(t){return JSON.stringify(t)}function I(t){var e={},n={},r={},i="";try{var o=t.split(".");e=S(a(o[0])||""),n=S(a(o[1])||""),i=o[2],r=n.d||{},delete n.d}catch(t){}return{header:e,claims:n,data:r,signature:i}}function N(t,e){return Object.prototype.hasOwnProperty.call(t,e)}function R(t,e){return Object.prototype.hasOwnProperty.call(t,e)?t[e]:void 0}function P(t){for(var e in t)if(Object.prototype.hasOwnProperty.call(t,e))return!1;return!0}function D(t,e,n){var r={};for(var i in t)Object.prototype.hasOwnProperty.call(t,i)&&(r[i]=e.call(n,t[i],i,t));return r}var O=(x.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},x.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],l=this.chain_[2],u=this.chain_[3],c=this.chain_[4];for(r=0;r<80;r++)s=r<40?r<20?(o=u^h&(l^u),1518500249):(o=h^l^u,1859775393):r<60?(o=h&l|u&(h|l),2400959708):(o=h^l^u,3395469782),i=(a<<5|a>>>27)+o+c+s+n[r]&4294967295,c=u,u=l,l=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]+l&4294967295,this.chain_[3]=this.chain_[3]+u&4294967295,this.chain_[4]=this.chain_[4]+c&4294967295},x.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}},x.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;56<=n;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;0<=i;i-=8)t[r]=this.chain_[n]>>i&255,++r;return t},x);function x(){this.chain_=[],this.buf_=[],this.W_=[],this.pad_=[],this.inbuf_=0,this.total_=0,this.blockSize=64,this.pad_[0]=128;for(var t=1;t<this.blockSize;++t)this.pad_[t]=0;this.reset()}function k(t,e,n,r){var i;if(r<e?i="at least "+e:n<r&&(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.")}function M(t){for(var e=0,n=0;n<t.length;n++){var r=t.charCodeAt(n);r<128?e++:r<2048?e+=2:55296<=r&&r<=56319?(e+=4,n++):e+=3}return e}var W,Q;(Q=W=W||{})[Q.DEBUG=0]="DEBUG",Q[Q.VERBOSE=1]="VERBOSE",Q[Q.INFO=2]="INFO",Q[Q.WARN=3]="WARN",Q[Q.ERROR=4]="ERROR",Q[Q.SILENT=5]="SILENT";function q(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 W.DEBUG:case W.VERBOSE:console.log.apply(console,["["+i+"]  "+t.name+":"].concat(n));break;case W.INFO:console.info.apply(console,["["+i+"]  "+t.name+":"].concat(n));break;case W.WARN:console.warn.apply(console,["["+i+"]  "+t.name+":"].concat(n));break;case W.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+")")}}}var U=W.INFO,V=(Object.defineProperty(H.prototype,"logLevel",{get:function(){return this._logLevel},set:function(t){if(!(t in W))throw new TypeError("Invalid value assigned to `logLevel`");this._logLevel=t},enumerable:!0,configurable:!0}),Object.defineProperty(H.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}),H.prototype.debug=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];this._logHandler.apply(this,[this,W.DEBUG].concat(t))},H.prototype.log=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];this._logHandler.apply(this,[this,W.VERBOSE].concat(t))},H.prototype.info=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];this._logHandler.apply(this,[this,W.INFO].concat(t))},H.prototype.warn=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];this._logHandler.apply(this,[this,W.WARN].concat(t))},H.prototype.error=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];this._logHandler.apply(this,[this,W.ERROR].concat(t))},H);function H(t){this.name=t,this._logLevel=U,this._logHandler=q}var B=(j.prototype.set=function(t,e){null==e?this.domStorage_.removeItem(this.prefixedName_(t)):this.domStorage_.setItem(this.prefixedName_(t),T(e))},j.prototype.get=function(t){var e=this.domStorage_.getItem(this.prefixedName_(t));return null==e?null:S(e)},j.prototype.remove=function(t){this.domStorage_.removeItem(this.prefixedName_(t))},j.prototype.prefixedName_=function(t){return this.prefix_+t},j.prototype.toString=function(){return this.domStorage_.toString()},j);function j(t){this.domStorage_=t,this.prefix_="firebase:"}var K=(Y.prototype.set=function(t,e){null==e?delete this.cache_[t]:this.cache_[t]=e},Y.prototype.get=function(t){return N(this.cache_,t)?this.cache_[t]:null},Y.prototype.remove=function(t){delete this.cache_[t]},Y);function Y(){this.cache_={},this.isInMemoryStorage=!0}function z(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 B(e)}}catch(t){}return new K}function G(t){var e=function(t){for(var e=[],n=0,r=0;r<t.length;r++){var i=t.charCodeAt(r);if(55296<=i&&i<=56319){var o=i-55296;C(++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:(i<65536?e[n++]=i>>12|224:(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 O;n.update(e);var r=n.digest();return l.encodeByteArray(r)}function X(t,e){C(!e||!0===t||!1===t,"Can't turn on custom loggers persistently."),!0===t?(lt.logLevel=W.VERBOSE,dt=lt.log.bind(lt),e&&ht.set("logging_enabled",!0)):"function"==typeof t?dt=t:(dt=null,ht.remove("logging_enabled"))}function $(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];if(!0===ft&&(ft=!1,null===dt&&!0===ht.get("logging_enabled")&&X(!0)),dt){var n=pt.apply(null,t);dt(n)}}function J(n){return function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];$.apply(void 0,o([n],t))}}function Z(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];var n="FIREBASE INTERNAL ERROR: "+pt.apply(void 0,o(t));lt.error(n)}function tt(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];var n="FIREBASE FATAL ERROR: "+pt.apply(void 0,o(t));throw lt.error(n),new Error(n)}function et(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];var n="FIREBASE WARNING: "+pt.apply(void 0,o(t));lt.warn(n)}function nt(t){return"number"==typeof t&&(t!=t||t==Number.POSITIVE_INFINITY||t==Number.NEGATIVE_INFINITY)}function rt(t,e){return t===e?0:t<e?-1:1}function it(t,e){if(e&&t in e)return e[t];throw new Error("Missing required key ("+t+") in object: "+T(e))}function ot(t,e){var n=t.length;if(n<=e)return[t];for(var r=[],i=0;i<n;i+=e)n<i+e?r.push(t.substring(i,n)):r.push(t.substring(i,i+e));return r}var st,at=z("localStorage"),ht=z("sessionStorage"),lt=new V("@firebase/database"),ut="FIREBASE_DATABASE_EMULATOR_HOST",ct=(st=1,function(){return st++}),pt=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+=pt.apply(null,t[r]):"object"==typeof t[r]?n+=T(t[r]):n+=t[r],n+=" ";return n},dt=null,ft=!0,_t="[MIN_NAME]",yt="[MAX_NAME]",vt=function(t,e){if(t===e)return 0;if(t===_t||e===yt)return-1;if(e===_t||t===yt)return 1;var n=St(t),r=St(e);return null!==n?null!==r?n-r==0?t.length-e.length:n-r:-1:null!==r?1:t<e?-1:1},gt=function(t){if("object"!=typeof t||null===t)return T(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+=T(e[i]),r+=":",r+=gt(t[e[i]]);return r+="}"};function mt(t,e){for(var n in t)t.hasOwnProperty(n)&&e(n,t[n])}function Ct(t){var e,n,r,i,o,s,a;for(C(!nt(t),"Invalid JSON number"),0===t?e=1/t==-1/(r=n=0)?1:0:(e=t<0,r=(t=Math.abs(t))>=Math.pow(2,-1022)?(n=(i=Math.min(Math.floor(Math.log(t)/Math.LN2),1023))+1023,Math.round(t*Math.pow(2,52-i)-Math.pow(2,52))):(n=0,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(),a=s.join("");var h="";for(o=0;o<64;o+=8){var l=parseInt(a.substr(o,8),2).toString(16);1===l.length&&(l="0"+l),h+=l}return h.toLowerCase()}function Et(t){try{t()}catch(e){setTimeout(function(){var t=e.stack||"";throw et("Exception was thrown by user callback.",t),e},Math.floor(0))}}function wt(t,e){var n=setTimeout(t,e);return"object"==typeof n&&n.unref&&n.unref(),n}var bt=new RegExp("^-?\\d{1,10}$"),St=function(t){if(bt.test(t)){var e=Number(t);if(-2147483648<=e&&e<=2147483647)return e}return null},Tt=(Object.defineProperty(It,"Empty",{get:function(){return new It("")},enumerable:!0,configurable:!0}),It.prototype.getFront=function(){return this.pieceNum_>=this.pieces_.length?null:this.pieces_[this.pieceNum_]},It.prototype.getLength=function(){return this.pieces_.length-this.pieceNum_},It.prototype.popFront=function(){var t=this.pieceNum_;return t<this.pieces_.length&&t++,new It(this.pieces_,t)},It.prototype.getBack=function(){return this.pieceNum_<this.pieces_.length?this.pieces_[this.pieces_.length-1]:null},It.prototype.toString=function(){for(var t="",e=this.pieceNum_;e<this.pieces_.length;e++)""!==this.pieces_[e]&&(t+="/"+this.pieces_[e]);return t||"/"},It.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||"/"},It.prototype.slice=function(t){return void 0===t&&(t=0),this.pieces_.slice(this.pieceNum_+t)},It.prototype.parent=function(){if(this.pieceNum_>=this.pieces_.length)return null;for(var t=[],e=this.pieceNum_;e<this.pieces_.length-1;e++)t.push(this.pieces_[e]);return new It(t,0)},It.prototype.child=function(t){for(var e=[],n=this.pieceNum_;n<this.pieces_.length;n++)e.push(this.pieces_[n]);if(t instanceof It)for(n=t.pieceNum_;n<t.pieces_.length;n++)e.push(t.pieces_[n]);else{var r=t.split("/");for(n=0;n<r.length;n++)0<r[n].length&&e.push(r[n])}return new It(e,0)},It.prototype.isEmpty=function(){return this.pieceNum_>=this.pieces_.length},It.relativePath=function(t,e){var n=t.getFront(),r=e.getFront();if(null===n)return e;if(n===r)return It.relativePath(t.popFront(),e.popFront());throw new Error("INTERNAL ERROR: innerPath ("+e+") is not within outerPath ("+t+")")},It.comparePaths=function(t,e){for(var n=t.slice(),r=e.slice(),i=0;i<n.length&&i<r.length;i++){var o=vt(n[i],r[i]);if(0!==o)return o}return n.length===r.length?0:n.length<r.length?-1:1},It.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},It.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},It);function It(t,e){if(void 0===e){this.pieces_=t.split("/");for(var n=0,r=0;r<this.pieces_.length;r++)0<this.pieces_[r].length&&(this.pieces_[n]=this.pieces_[r],n++);this.pieces_.length=n,this.pieceNum_=0}else this.pieces_=t,this.pieceNum_=e}var Nt=(Object.defineProperty(Rt,"MAX_PATH_DEPTH",{get:function(){return 32},enumerable:!0,configurable:!0}),Object.defineProperty(Rt,"MAX_PATH_LENGTH_BYTES",{get:function(){return 768},enumerable:!0,configurable:!0}),Rt.prototype.push=function(t){0<this.parts_.length&&(this.byteLength_+=1),this.parts_.push(t),this.byteLength_+=M(t),this.checkValid_()},Rt.prototype.pop=function(){var t=this.parts_.pop();this.byteLength_-=M(t),0<this.parts_.length&&(this.byteLength_-=1)},Rt.prototype.checkValid_=function(){if(this.byteLength_>Rt.MAX_PATH_LENGTH_BYTES)throw new Error(this.errorPrefix_+"has a key path longer than "+Rt.MAX_PATH_LENGTH_BYTES+" bytes ("+this.byteLength_+").");if(this.parts_.length>Rt.MAX_PATH_DEPTH)throw new Error(this.errorPrefix_+"path specified exceeds the maximum depth that can be written ("+Rt.MAX_PATH_DEPTH+") or object contains a cycle "+this.toErrorString())},Rt.prototype.toErrorString=function(){return 0==this.parts_.length?"":"in property '"+this.parts_.join(".")+"'"},Rt);function Rt(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_+=M(this.parts_[n]);this.checkValid_()}var Pt="firebaseio.com",Dt="websocket",Ot="long_polling",xt=(kt.prototype.needsQueryParam=function(){return this.host!==this.internalHost||this.isCustomHost()||this.includeNamespaceInQueryParams},kt.prototype.isCacheableHost=function(){return"s-"===this.internalHost.substr(0,2)},kt.prototype.isDemoHost=function(){return"firebaseio-demo.com"===this.domain},kt.prototype.isCustomHost=function(){return"firebaseio.com"!==this.domain&&"firebaseio-demo.com"!==this.domain},kt.prototype.updateHost=function(t){t!==this.internalHost&&(this.internalHost=t,this.isCacheableHost()&&at.set("host:"+this.host,this.internalHost))},kt.prototype.connectionURL=function(t,e){var n;if(C("string"==typeof t,"typeof type must == string"),C("object"==typeof e,"typeof params must == object"),t===Dt)n=(this.secure?"wss://":"ws://")+this.internalHost+"/.ws?";else{if(t!==Ot)throw new Error("Unknown connection type: "+t);n=(this.secure?"https://":"http://")+this.internalHost+"/.lp?"}this.needsQueryParam()&&(e.ns=this.namespace);var r=[];return mt(e,function(t,e){r.push(t+"="+e)}),n+r.join("&")},kt.prototype.toString=function(){var t=this.toURLString();return this.persistenceKey&&(t+="<"+this.persistenceKey+">"),t},kt.prototype.toURLString=function(){return(this.secure?"https://":"http://")+this.host},kt);function kt(t,e,n,r,i,o){void 0===i&&(i=""),void 0===o&&(o=!1),this.secure=e,this.namespace=n,this.webSocketOnly=r,this.persistenceKey=i,this.includeNamespaceInQueryParams=o,this.host=t.toLowerCase(),this.domain=this.host.substr(this.host.indexOf(".")+1),this.internalHost=at.get("host:"+t)||this.host}function Ft(t){var e=Kt(t),n=e.namespace;"firebase"===e.domain&&tt(e.host+" is no longer supported. Please use <YOUR FIREBASE>.firebaseio.com instead"),n&&"undefined"!=n||"localhost"===e.domain||tt("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:")&&et("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 xt(e.host,e.secure,n,r,"",n!=e.subdomain),path:new Tt(e.pathString)}}function At(t){return"string"==typeof t&&0!==t.length&&!Yt.test(t)}function Lt(t){return"string"==typeof t&&0!==t.length&&!zt.test(t)}function Mt(t){return null===t||"string"==typeof t||"number"==typeof t&&!nt(t)||t&&"object"==typeof t&&N(t,".sv")}function Wt(t,e,n,r,i){i&&void 0===n||Xt(F(t,e,i),n,r)}function Qt(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=[];mt(n,function(t,e){var n=new Tt(t);if(Xt(o,e,r.child(n)),".priority"===n.getBack()&&!Mt(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(!At(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(Tt.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)}}function qt(t,e,n,r){if(!r||void 0!==n){if(nt(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(!Mt(n))throw new Error(F(t,e,r)+"must be a valid Firebase priority (a string, finite number, server value, or null).")}}function Ut(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".')}}function Vt(t,e,n,r){if(!(r&&void 0===n||At(n)))throw new Error(F(t,e,r)+'was an invalid key = "'+n+'".  Firebase keys must be non-empty strings and can\'t contain ".", "#", "$", "/", "[", or "]").')}function Ht(t,e,n,r){if(!(r&&void 0===n||Lt(n)))throw new Error(F(t,e,r)+'was an invalid path = "'+n+'". Paths must be non-empty strings and can\'t contain ".", "#", "$", "[", or "]"')}function Bt(t,e){if(".info"===e.getFront())throw new Error(t+" failed = Can't modify data under /.info/")}function jt(t,e,n){var r=n.path.toString();if("string"!=typeof n.repoInfo.host||0===n.repoInfo.host.length||!At(n.repoInfo.namespace)&&"localhost"!==n.repoInfo.host.split(":")[0]||0!==r.length&&!function(t){return t=t&&t.replace(/^\/*\.info(\/|$)/,"/"),Lt(t)}(r))throw new Error(F(t,e,!1)+'must be a valid firebase URL and the path can\'t contain ".", "#", "$", "[", or "]".')}var Kt=function(t){var e="",n="",r="",i="",o="",s=!0,a="https",h=443;if("string"==typeof t){var l=t.indexOf("//");0<=l&&(a=t.substring(0,l-1),t=t.substring(l+2));var u=t.indexOf("/");-1===u&&(u=t.length);var c=t.indexOf("?");-1===c&&(c=t.length),e=t.substring(0,Math.min(u,c)),u<c&&(i=function(t){for(var e="",n=t.split("/"),r=0;r<n.length;r++)if(0<n[r].length){var i=n[r];try{i=decodeURIComponent(i.replace(/\+/g," "))}catch(t){}e+="/"+i}return e}(t.substring(u,c)));var p=function(t){var e,n,r={};"?"===t.charAt(0)&&(t=t.substring(1));try{for(var i=f(t.split("&")),o=i.next();!o.done;o=i.next()){var s=o.value;if(0!==s.length){var a=s.split("=");2===a.length?r[decodeURIComponent(a[0])]=decodeURIComponent(a[1]):et("Invalid query segment '"+s+"' in query '"+t+"'")}}}catch(t){e={error:t}}finally{try{o&&!o.done&&(n=i.return)&&n.call(i)}finally{if(e)throw e.error}}return r}(t.substring(Math.min(t.length,c)));0<=(l=e.indexOf(":"))?(s="https"===a||"wss"===a,h=parseInt(e.substring(l+1),10)):l=t.length;var d=e.split(".");3===d.length?(n=d[1],o=r=d[0].toLowerCase()):2===d.length?n=d[0]:"localhost"===d[0].slice(0,l).toLowerCase()&&(n="localhost"),"ns"in p&&(o=p.ns)}return{host:e,port:h,domain:n,subdomain:r,secure:s,scheme:a,pathString:i,namespace:o}},Yt=/[\[\].#$\/\u0000-\u001F\u007F]/,zt=/[\[\].#$\u0000-\u001F\u007F]/,Gt=10485760,Xt=function(n,t,e){var r=e instanceof Tt?new Nt(e,n):e;if(void 0===t)throw new Error(n+"contains undefined "+r.toErrorString());if("function"==typeof t)throw new Error(n+"contains a function "+r.toErrorString()+" with contents = "+t.toString());if(nt(t))throw new Error(n+"contains "+t.toString()+" "+r.toErrorString());if("string"==typeof t&&t.length>Gt/3&&M(t)>Gt)throw new Error(n+"contains a string greater than "+Gt+" utf8 bytes "+r.toErrorString()+" ('"+t.substring(0,50)+"...')");if(t&&"object"==typeof t){var i=!1,o=!1;if(mt(t,function(t,e){if(".value"===t)i=!0;else if(".priority"!==t&&".sv"!==t&&(o=!0,!At(t)))throw new Error(n+" contains an invalid key ("+t+") "+r.toErrorString()+'.  Keys must be non-empty strings and can\'t contain ".", "#", "$", "/", "[", or "]"');r.push(t),Xt(n,e,r),r.pop()}),i&&o)throw new Error(n+' contains ".value" child '+r.toErrorString()+" in addition to actual children.")}},$t=(Jt.prototype.cancel=function(t){k("OnDisconnect.cancel",0,1,arguments.length),A("OnDisconnect.cancel",1,t,!0);var e=new p;return this.repo_.onDisconnectCancel(this.path_,e.wrapCallback(t)),e.promise},Jt.prototype.remove=function(t){k("OnDisconnect.remove",0,1,arguments.length),Bt("OnDisconnect.remove",this.path_),A("OnDisconnect.remove",1,t,!0);var e=new p;return this.repo_.onDisconnectSet(this.path_,null,e.wrapCallback(t)),e.promise},Jt.prototype.set=function(t,e){k("OnDisconnect.set",1,2,arguments.length),Bt("OnDisconnect.set",this.path_),Wt("OnDisconnect.set",1,t,this.path_,!1),A("OnDisconnect.set",2,e,!0);var n=new p;return this.repo_.onDisconnectSet(this.path_,t,n.wrapCallback(e)),n.promise},Jt.prototype.setWithPriority=function(t,e,n){k("OnDisconnect.setWithPriority",2,3,arguments.length),Bt("OnDisconnect.setWithPriority",this.path_),Wt("OnDisconnect.setWithPriority",1,t,this.path_,!1),qt("OnDisconnect.setWithPriority",2,e,!1),A("OnDisconnect.setWithPriority",3,n,!0);var r=new p;return this.repo_.onDisconnectSetWithPriority(this.path_,t,e,r.wrapCallback(n)),r.promise},Jt.prototype.update=function(t,e){if(k("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,et("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 p;return this.repo_.onDisconnectUpdate(this.path_,t,i.wrapCallback(e)),i.promise},Jt);function Jt(t,e){this.repo_=t,this.path_=e}var Zt=(te.prototype.toJSON=function(){return k("TransactionResult.toJSON",0,1,arguments.length),{committed:this.committed,snapshot:this.snapshot.toJSON()}},te);function te(t,e){this.committed=t,this.snapshot=e}var ee,ne,re,ie=(ee="-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz",ne=0,re=[],function(t){var e,n=t===ne;ne=t;var r=new Array(8);for(e=7;0<=e;e--)r[e]=ee.charAt(t%64),t=Math.floor(t/64);C(0===t,"Cannot push at time == 0");var i=r.join("");if(n){for(e=11;0<=e&&63===re[e];e--)re[e]=0;re[e]++}else for(e=0;e<12;e++)re[e]=Math.floor(64*Math.random());for(e=0;e<12;e++)i+=ee.charAt(re[e]);return C(20===i.length,"nextPushId: Length should be 20."),i}),oe=(se.Wrap=function(t,e){return new se(t,e)},se);function se(t,e){this.name=t,this.node=e}var ae,he=(le.prototype.getCompare=function(){return this.compare.bind(this)},le.prototype.indexedValueChanged=function(t,e){var n=new oe(_t,t),r=new oe(_t,e);return 0!==this.compare(n,r)},le.prototype.minPost=function(){return oe.MIN},le);function le(){}var ue,ce=(t(pe,ue=he),Object.defineProperty(pe,"__EMPTY_NODE",{get:function(){return ae},set:function(t){ae=t},enumerable:!0,configurable:!0}),pe.prototype.compare=function(t,e){return vt(t.name,e.name)},pe.prototype.isDefinedOn=function(t){throw c("KeyIndex.isDefinedOn not expected to be called.")},pe.prototype.indexedValueChanged=function(t,e){return!1},pe.prototype.minPost=function(){return oe.MIN},pe.prototype.maxPost=function(){return new oe(yt,ae)},pe.prototype.makePost=function(t,e){return C("string"==typeof t,"KeyIndex indexValue must always be a string."),new oe(t,ae)},pe.prototype.toString=function(){return".key"},pe);function pe(){return null!==ue&&ue.apply(this,arguments)||this}var de,fe=new ce;function _e(t){return"number"==typeof t?"number:"+Ct(t):"string:"+t}function ye(t){if(t.isLeafNode()){var e=t.val();C("string"==typeof e||"number"==typeof e||"object"==typeof e&&N(e,".sv"),"Priority must be a string or number.")}else C(t===de||t.isEmpty(),"priority of unexpected type.");C(t===de||t.getPriority().isEmpty(),"Priority nodes can't have a priority of their own.")}var ve,ge,me,Ce,Ee=(Object.defineProperty(we,"__childrenNodeConstructor",{get:function(){return ve},set:function(t){ve=t},enumerable:!0,configurable:!0}),we.prototype.isLeafNode=function(){return!0},we.prototype.getPriority=function(){return this.priorityNode_},we.prototype.updatePriority=function(t){return new we(this.value_,t)},we.prototype.getImmediateChild=function(t){return".priority"===t?this.priorityNode_:we.__childrenNodeConstructor.EMPTY_NODE},we.prototype.getChild=function(t){return t.isEmpty()?this:".priority"===t.getFront()?this.priorityNode_:we.__childrenNodeConstructor.EMPTY_NODE},we.prototype.hasChild=function(){return!1},we.prototype.getPredecessorChildName=function(t,e){return null},we.prototype.updateImmediateChild=function(t,e){return".priority"===t?this.updatePriority(e):e.isEmpty()&&".priority"!==t?this:we.__childrenNodeConstructor.EMPTY_NODE.updateImmediateChild(t,e).updatePriority(this.priorityNode_)},we.prototype.updateChild=function(t,e){var n=t.getFront();return null===n?e:e.isEmpty()&&".priority"!==n?this:(C(".priority"!==n||1===t.getLength(),".priority must be the last token in a path"),this.updateImmediateChild(n,we.__childrenNodeConstructor.EMPTY_NODE.updateChild(t.popFront(),e)))},we.prototype.isEmpty=function(){return!1},we.prototype.numChildren=function(){return 0},we.prototype.forEachChild=function(t,e){return!1},we.prototype.val=function(t){return t&&!this.getPriority().isEmpty()?{".value":this.getValue(),".priority":this.getPriority().val()}:this.getValue()},we.prototype.hash=function(){if(null===this.lazyHash_){var t="";this.priorityNode_.isEmpty()||(t+="priority:"+_e(this.priorityNode_.val())+":");var e=typeof this.value_;t+=e+":",t+="number"==e?Ct(this.value_):this.value_,this.lazyHash_=G(t)}return this.lazyHash_},we.prototype.getValue=function(){return this.value_},we.prototype.compareTo=function(t){return t===we.__childrenNodeConstructor.EMPTY_NODE?1:t instanceof we.__childrenNodeConstructor?-1:(C(t.isLeafNode(),"Unknown node type"),this.compareToLeafNode_(t))},we.prototype.compareToLeafNode_=function(t){var e=typeof t.value_,n=typeof this.value_,r=we.VALUE_TYPE_ORDER.indexOf(e),i=we.VALUE_TYPE_ORDER.indexOf(n);return C(0<=r,"Unknown leaf type: "+e),C(0<=i,"Unknown leaf type: "+n),r===i?"object"==n?0:this.value_<t.value_?-1:this.value_===t.value_?0:1:i-r},we.prototype.withIndex=function(){return this},we.prototype.isIndexed=function(){return!0},we.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},we.VALUE_TYPE_ORDER=["object","boolean","number","string"],we);function we(t,e){void 0===e&&(e=we.__childrenNodeConstructor.EMPTY_NODE),this.value_=t,this.priorityNode_=e,this.lazyHash_=null,C(void 0!==this.value_&&null!==this.value_,"LeafNode shouldn't be created with null/undefined value."),ye(this.priorityNode_)}function be(){return null!==Ce&&Ce.apply(this,arguments)||this}var Se=new(t(be,Ce=he),be.prototype.compare=function(t,e){var n=t.node.getPriority(),r=e.node.getPriority(),i=n.compareTo(r);return 0===i?vt(t.name,e.name):i},be.prototype.isDefinedOn=function(t){return!t.getPriority().isEmpty()},be.prototype.indexedValueChanged=function(t,e){return!t.getPriority().equals(e.getPriority())},be.prototype.minPost=function(){return oe.MIN},be.prototype.maxPost=function(){return new oe(yt,new Ee("[PRIORITY-POST]",me))},be.prototype.makePost=function(t,e){var n=ge(t);return new oe(e,new Ee("[PRIORITY-POST]",n))},be.prototype.toString=function(){return".priority"},be),Te=(Ie.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},Ie.prototype.hasNext=function(){return 0<this.nodeStack_.length},Ie.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}},Ie);function Ie(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}}var Ne=(Re.prototype.copy=function(t,e,n,r,i){return new Re(null!=t?t:this.key,null!=e?e:this.value,null!=n?n:this.color,null!=r?r:this.left,null!=i?i:this.right)},Re.prototype.count=function(){return this.left.count()+1+this.right.count()},Re.prototype.isEmpty=function(){return!1},Re.prototype.inorderTraversal=function(t){return this.left.inorderTraversal(t)||t(this.key,this.value)||this.right.inorderTraversal(t)},Re.prototype.reverseTraversal=function(t){return this.right.reverseTraversal(t)||t(this.key,this.value)||this.left.reverseTraversal(t)},Re.prototype.min_=function(){return this.left.isEmpty()?this:this.left.min_()},Re.prototype.minKey=function(){return this.min_().key},Re.prototype.maxKey=function(){return this.right.isEmpty()?this.key:this.right.maxKey()},Re.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_()},Re.prototype.removeMin_=function(){if(this.left.isEmpty())return Oe.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_()},Re.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 Oe.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_()},Re.prototype.isRed_=function(){return this.color},Re.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},Re.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},Re.prototype.moveRedRight_=function(){var t=this.colorFlip_();return t.left.left.isRed_()&&(t=(t=t.rotateRight_()).colorFlip_()),t},Re.prototype.rotateLeft_=function(){var t=this.copy(null,null,Re.RED,null,this.right.left);return this.right.copy(null,null,this.color,t,null)},Re.prototype.rotateRight_=function(){var t=this.copy(null,null,Re.RED,this.left.right,null);return this.left.copy(null,null,this.color,null,t)},Re.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)},Re.prototype.checkMaxDepth_=function(){var t=this.check_();return Math.pow(2,t)<=this.count()+1},Re.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)},Re.RED=!0,Re.BLACK=!1,Re);function Re(t,e,n,r,i){this.key=t,this.value=e,this.color=null!=n?n:Re.RED,this.left=null!=r?r:Oe.EMPTY_NODE,this.right=null!=i?i:Oe.EMPTY_NODE}var Pe=(De.prototype.copy=function(t,e,n,r,i){return this},De.prototype.insert=function(t,e,n){return new Ne(t,e,null)},De.prototype.remove=function(t,e){return this},De.prototype.count=function(){return 0},De.prototype.isEmpty=function(){return!0},De.prototype.inorderTraversal=function(t){return!1},De.prototype.reverseTraversal=function(t){return!1},De.prototype.minKey=function(){return null},De.prototype.maxKey=function(){return null},De.prototype.check_=function(){return 0},De.prototype.isRed_=function(){return!1},De);function De(){}var Oe=(xe.prototype.insert=function(t,e){return new xe(this.comparator_,this.root_.insert(t,e,this.comparator_).copy(null,null,Ne.BLACK,null,null))},xe.prototype.remove=function(t){return new xe(this.comparator_,this.root_.remove(t,this.comparator_).copy(null,null,Ne.BLACK,null,null))},xe.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:0<e&&(n=n.right)}return null},xe.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:0<e&&(n=(r=n).right)}throw new Error("Attempted to find predecessor key for a nonexistent key.  What gives?")},xe.prototype.isEmpty=function(){return this.root_.isEmpty()},xe.prototype.count=function(){return this.root_.count()},xe.prototype.minKey=function(){return this.root_.minKey()},xe.prototype.maxKey=function(){return this.root_.maxKey()},xe.prototype.inorderTraversal=function(t){return this.root_.inorderTraversal(t)},xe.prototype.reverseTraversal=function(t){return this.root_.reverseTraversal(t)},xe.prototype.getIterator=function(t){return new Te(this.root_,null,this.comparator_,!1,t)},xe.prototype.getIteratorFrom=function(t,e){return new Te(this.root_,t,this.comparator_,!1,e)},xe.prototype.getReverseIteratorFrom=function(t,e){return new Te(this.root_,t,this.comparator_,!0,e)},xe.prototype.getReverseIterator=function(t){return new Te(this.root_,null,this.comparator_,!0,t)},xe.EMPTY_NODE=new Pe,xe);function xe(t,e){void 0===e&&(e=xe.EMPTY_NODE),this.comparator_=t,this.root_=e}var ke=Math.log(2),Fe=(Ae.prototype.nextBitIsOne=function(){var t=!(this.bits_&1<<this.current_);return this.current_--,t},Ae);function Ae(t){var e;this.count=(e=t+1,parseInt(Math.log(e)/ke,10)),this.current_=this.count-1;var n,r=(n=this.count,parseInt(Array(n+1).join("1"),2));this.bits_=t+1&r}var Le,Me,We=function(l,t,u,e){l.sort(t);var c=function(t,e){var n,r,i=e-t;if(0==i)return null;if(1==i)return n=l[t],r=u?u(n):n,new Ne(r,n.node,Ne.BLACK,null,null);var o=parseInt(i/2,10)+t,s=c(t,o),a=c(o+1,e);return n=l[o],r=u?u(n):n,new Ne(r,n.node,Ne.BLACK,s,a)},n=function(t){for(var e=null,n=null,a=l.length,r=function(t,e){var n=a-t,r=a;a-=t;var i=c(1+n,r),o=l[n],s=u?u(o):o;h(new Ne(s,o.node,e,null,i))},h=function(t){e=e?e.left=t:n=t},i=0;i<t.count;++i){var o=t.nextBitIsOne(),s=Math.pow(2,t.count-(i+1));o?r(s,Ne.BLACK):(r(s,Ne.BLACK),r(s,Ne.RED))}return n}(new Fe(l.length));return new Oe(e||t,n)},Qe={},qe=(Object.defineProperty(Ue,"Default",{get:function(){return C(Se,"ChildrenNode.ts has not been loaded"),Le=Le||new Ue({".priority":Qe},{".priority":Se})},enumerable:!0,configurable:!0}),Ue.prototype.get=function(t){var e=R(this.indexes_,t);if(!e)throw new Error("No index defined for "+t);return e instanceof Oe?e:null},Ue.prototype.hasIndex=function(t){return N(this.indexSet_,t.toString())},Ue.prototype.addIndex=function(t,e){C(t!==fe,"KeyIndex always exists and isn't meant to be added to the IndexMap.");for(var n,r=[],i=!1,o=e.getIterator(oe.Wrap),s=o.getNext();s;)i=i||t.isDefinedOn(s.node),r.push(s),s=o.getNext();n=i?We(r,t.getCompare()):Qe;var a=t.toString(),h=u({},this.indexSet_);h[a]=t;var l=u({},this.indexes_);return l[a]=n,new Ue(l,h)},Ue.prototype.addToIndexes=function(h,l){var u=this;return new Ue(D(this.indexes_,function(t,e){var n=R(u.indexSet_,e);if(C(n,"Missing index implementation for "+e),t===Qe){if(n.isDefinedOn(h.node)){for(var r=[],i=l.getIterator(oe.Wrap),o=i.getNext();o;)o.name!=h.name&&r.push(o),o=i.getNext();return r.push(h),We(r,n.getCompare())}return Qe}var s=l.get(h.name),a=t;return s&&(a=a.remove(new oe(h.name,s))),a.insert(h,h.node)}),this.indexSet_)},Ue.prototype.removeFromIndexes=function(n,r){return new Ue(D(this.indexes_,function(t){if(t===Qe)return t;var e=r.get(n.name);return e?t.remove(new oe(n.name,e)):t}),this.indexSet_)},Ue);function Ue(t,e){this.indexes_=t,this.indexSet_=e}function Ve(t,e){return vt(t.name,e.name)}function He(t,e){return vt(t,e)}var Be,je=(Object.defineProperty(Ke,"EMPTY_NODE",{get:function(){return Me=Me||new Ke(new Oe(He),null,qe.Default)},enumerable:!0,configurable:!0}),Ke.prototype.isLeafNode=function(){return!1},Ke.prototype.getPriority=function(){return this.priorityNode_||Me},Ke.prototype.updatePriority=function(t){return this.children_.isEmpty()?this:new Ke(this.children_,t,this.indexMap_)},Ke.prototype.getImmediateChild=function(t){if(".priority"===t)return this.getPriority();var e=this.children_.get(t);return null===e?Me:e},Ke.prototype.getChild=function(t){var e=t.getFront();return null===e?this:this.getImmediateChild(e).getChild(t.popFront())},Ke.prototype.hasChild=function(t){return null!==this.children_.get(t)},Ke.prototype.updateImmediateChild=function(t,e){if(C(e,"We should always be passing snapshot nodes"),".priority"===t)return this.updatePriority(e);var n,r=new oe(t,e),i=void 0,o=void 0;return o=e.isEmpty()?(i=this.children_.remove(t),this.indexMap_.removeFromIndexes(r,this.children_)):(i=this.children_.insert(t,e),this.indexMap_.addToIndexes(r,this.children_)),n=i.isEmpty()?Me:this.priorityNode_,new Ke(i,n,o)},Ke.prototype.updateChild=function(t,e){var n=t.getFront();if(null===n)return e;C(".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)},Ke.prototype.isEmpty=function(){return this.children_.isEmpty()},Ke.prototype.numChildren=function(){return this.children_.count()},Ke.prototype.val=function(n){if(this.isEmpty())return null;var r={},i=0,o=0,s=!0;if(this.forEachChild(Se,function(t,e){r[t]=e.val(n),i++,s&&Ke.INTEGER_REGEXP_.test(t)?o=Math.max(o,Number(t)):s=!1}),!n&&s&&o<2*i){var t=[];for(var e in r)t[e]=r[e];return t}return n&&!this.getPriority().isEmpty()&&(r[".priority"]=this.getPriority().val()),r},Ke.prototype.hash=function(){if(null===this.lazyHash_){var r="";this.getPriority().isEmpty()||(r+="priority:"+_e(this.getPriority().val())+":"),this.forEachChild(Se,function(t,e){var n=e.hash();""!==n&&(r+=":"+t+":"+n)}),this.lazyHash_=""===r?"":G(r)}return this.lazyHash_},Ke.prototype.getPredecessorChildName=function(t,e,n){var r=this.resolveIndex_(n);if(r){var i=r.getPredecessorKey(new oe(t,e));return i?i.name:null}return this.children_.getPredecessorKey(t)},Ke.prototype.getFirstChildName=function(t){var e=this.resolveIndex_(t);if(e){var n=e.minKey();return n&&n.name}return this.children_.minKey()},Ke.prototype.getFirstChild=function(t){var e=this.getFirstChildName(t);return e?new oe(e,this.children_.get(e)):null},Ke.prototype.getLastChildName=function(t){var e=this.resolveIndex_(t);if(e){var n=e.maxKey();return n&&n.name}return this.children_.maxKey()},Ke.prototype.getLastChild=function(t){var e=this.getLastChildName(t);return e?new oe(e,this.children_.get(e)):null},Ke.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)},Ke.prototype.getIterator=function(t){return this.getIteratorFrom(t.minPost(),t)},Ke.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,oe.Wrap),i=r.peek();null!=i&&e.compare(i,t)<0;)r.getNext(),i=r.peek();return r},Ke.prototype.getReverseIterator=function(t){return this.getReverseIteratorFrom(t.maxPost(),t)},Ke.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,oe.Wrap),i=r.peek();null!=i&&0<e.compare(i,t);)r.getNext(),i=r.peek();return r},Ke.prototype.compareTo=function(t){return this.isEmpty()?t.isEmpty()?0:-1:t.isLeafNode()||t.isEmpty()?1:t===ze?-1:0},Ke.prototype.withIndex=function(t){if(t===fe||this.indexMap_.hasIndex(t))return this;var e=this.indexMap_.addIndex(t,this.children_);return new Ke(this.children_,this.priorityNode_,e)},Ke.prototype.isIndexed=function(t){return t===fe||this.indexMap_.hasIndex(t)},Ke.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())return!1;for(var n=this.getIterator(Se),r=e.getIterator(Se),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},Ke.prototype.resolveIndex_=function(t){return t===fe?null:this.indexMap_.get(t.toString())},Ke.INTEGER_REGEXP_=/^(0|[1-9]\d*)$/,Ke);function Ke(t,e,n){this.children_=t,this.priorityNode_=e,this.indexMap_=n,this.lazyHash_=null,this.priorityNode_&&ye(this.priorityNode_),this.children_.isEmpty()&&C(!this.priorityNode_||this.priorityNode_.isEmpty(),"An empty node cannot have a priority")}function Ye(){return Be.call(this,new Oe(He),je.EMPTY_NODE,qe.Default)||this}var ze=new(t(Ye,Be=je),Ye.prototype.compareTo=function(t){return t===this?0:1},Ye.prototype.equals=function(t){return t===this},Ye.prototype.getPriority=function(){return this},Ye.prototype.getImmediateChild=function(t){return je.EMPTY_NODE},Ye.prototype.isEmpty=function(){return!1},Ye);Object.defineProperties(oe,{MIN:{value:new oe(_t,je.EMPTY_NODE)},MAX:{value:new oe(yt,ze)}}),ce.__EMPTY_NODE=je.EMPTY_NODE,Ee.__childrenNodeConstructor=je,de=ze,me=ze;var Ge,Xe=!0;function $e(r,t){if(void 0===t&&(t=null),null===r)return je.EMPTY_NODE;if("object"==typeof r&&".priority"in r&&(t=r[".priority"]),C(null===t||"string"==typeof t||"number"==typeof t||"object"==typeof t&&".sv"in t,"Invalid priority type found: "+typeof t),"object"==typeof r&&".value"in r&&null!==r[".value"]&&(r=r[".value"]),"object"!=typeof r||".sv"in r)return new Ee(r,$e(t));if(r instanceof Array||!Xe){var i=je.EMPTY_NODE;return mt(r,function(t,e){if(N(r,t)&&"."!==t.substring(0,1)){var n=$e(e);!n.isLeafNode()&&n.isEmpty()||(i=i.updateImmediateChild(t,n))}}),i.updatePriority($e(t))}var o=[],s=!1;if(mt(r,function(t,e){if("."!==t.substring(0,1)){var n=$e(e);n.isEmpty()||(s=s||!n.getPriority().isEmpty(),o.push(new oe(t,n)))}}),0==o.length)return je.EMPTY_NODE;var e=We(o,Ve,function(t){return t.name},He);if(s){var n=We(o,Se.getCompare());return new je(e,$e(t),new qe({".priority":n},{".priority":Se}))}return new je(e,$e(t),qe.Default)}function Je(){return null!==Ge&&Ge.apply(this,arguments)||this}ge=$e;var Ze,tn=new(t(Je,Ge=he),Je.prototype.compare=function(t,e){var n=t.node.compareTo(e.node);return 0===n?vt(t.name,e.name):n},Je.prototype.isDefinedOn=function(t){return!0},Je.prototype.indexedValueChanged=function(t,e){return!t.equals(e)},Je.prototype.minPost=function(){return oe.MIN},Je.prototype.maxPost=function(){return oe.MAX},Je.prototype.makePost=function(t,e){var n=$e(t);return new oe(e,n)},Je.prototype.toString=function(){return".value"},Je),en=(t(nn,Ze=he),nn.prototype.extractChild=function(t){return t.getChild(this.indexPath_)},nn.prototype.isDefinedOn=function(t){return!t.getChild(this.indexPath_).isEmpty()},nn.prototype.compare=function(t,e){var n=this.extractChild(t.node),r=this.extractChild(e.node),i=n.compareTo(r);return 0===i?vt(t.name,e.name):i},nn.prototype.makePost=function(t,e){var n=$e(t),r=je.EMPTY_NODE.updateChild(this.indexPath_,n);return new oe(e,r)},nn.prototype.maxPost=function(){var t=je.EMPTY_NODE.updateChild(this.indexPath_,ze);return new oe(yt,t)},nn.prototype.toString=function(){return this.indexPath_.slice().join("/")},nn);function nn(t){var e=Ze.call(this)||this;return e.indexPath_=t,C(!t.isEmpty()&&".priority"!==t.getFront(),"Can't create PathIndex with empty path or .priority key"),e}var rn=(on.prototype.val=function(){return k("DataSnapshot.val",0,0,arguments.length),this.node_.val()},on.prototype.exportVal=function(){return k("DataSnapshot.exportVal",0,0,arguments.length),this.node_.val(!0)},on.prototype.toJSON=function(){return k("DataSnapshot.toJSON",0,1,arguments.length),this.exportVal()},on.prototype.exists=function(){return k("DataSnapshot.exists",0,0,arguments.length),!this.node_.isEmpty()},on.prototype.child=function(t){k("DataSnapshot.child",0,1,arguments.length),t=String(t),Ht("DataSnapshot.child",1,t,!1);var e=new Tt(t),n=this.ref_.child(e);return new on(this.node_.getChild(e),n,Se)},on.prototype.hasChild=function(t){k("DataSnapshot.hasChild",1,1,arguments.length),Ht("DataSnapshot.hasChild",1,t,!1);var e=new Tt(t);return!this.node_.getChild(e).isEmpty()},on.prototype.getPriority=function(){return k("DataSnapshot.getPriority",0,0,arguments.length),this.node_.getPriority().val()},on.prototype.forEach=function(n){var r=this;return k("DataSnapshot.forEach",1,1,arguments.length),A("DataSnapshot.forEach",1,n,!1),!this.node_.isLeafNode()&&!!this.node_.forEachChild(this.index_,function(t,e){return n(new on(e,r.ref_.child(t),Se))})},on.prototype.hasChildren=function(){return k("DataSnapshot.hasChildren",0,0,arguments.length),!this.node_.isLeafNode()&&!this.node_.isEmpty()},Object.defineProperty(on.prototype,"key",{get:function(){return this.ref_.getKey()},enumerable:!0,configurable:!0}),on.prototype.numChildren=function(){return k("DataSnapshot.numChildren",0,0,arguments.length),this.node_.numChildren()},on.prototype.getRef=function(){return k("DataSnapshot.ref",0,0,arguments.length),this.ref_},Object.defineProperty(on.prototype,"ref",{get:function(){return this.getRef()},enumerable:!0,configurable:!0}),on);function on(t,e,n){this.node_=t,this.ref_=e,this.index_=n}var sn=(an.prototype.getPath=function(){var t=this.snapshot.getRef();return"value"===this.eventType?t.path:t.getParent().path},an.prototype.getEventType=function(){return this.eventType},an.prototype.getEventRunner=function(){return this.eventRegistration.getEventRunner(this)},an.prototype.toString=function(){return this.getPath().toString()+":"+this.eventType+":"+T(this.snapshot.exportVal())},an);function an(t,e,n,r){this.eventType=t,this.eventRegistration=e,this.snapshot=n,this.prevName=r}var hn=(ln.prototype.getPath=function(){return this.path},ln.prototype.getEventType=function(){return"cancel"},ln.prototype.getEventRunner=function(){return this.eventRegistration.getEventRunner(this)},ln.prototype.toString=function(){return this.path.toString()+":cancel"},ln);function ln(t,e,n){this.eventRegistration=t,this.error=e,this.path=n}var un=(cn.prototype.respondsTo=function(t){return"value"===t},cn.prototype.createEvent=function(t,e){var n=e.getQueryParams().getIndex();return new sn("value",this,new rn(t.snapshotNode,e.getRef(),n))},cn.prototype.getEventRunner=function(t){var e=this.context_;if("cancel"===t.getEventType()){C(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)}},cn.prototype.createCancelEvent=function(t,e){return this.cancelCallback_?new hn(this,t,e):null},cn.prototype.matches=function(t){return t instanceof cn&&(!t.callback_||!this.callback_||t.callback_===this.callback_&&t.context_===this.context_)},cn.prototype.hasAnyCallback=function(){return null!==this.callback_},cn);function cn(t,e,n){this.callback_=t,this.cancelCallback_=e,this.context_=n}var pn,dn=(fn.prototype.respondsTo=function(t){var e="children_added"===t?"child_added":t;return e="children_removed"===e?"child_removed":e,N(this.callbacks_,e)},fn.prototype.createCancelEvent=function(t,e){return this.cancelCallback_?new hn(this,t,e):null},fn.prototype.createEvent=function(t,e){C(null!=t.childName,"Child events should have a childName.");var n=e.getRef().child(t.childName),r=e.getQueryParams().getIndex();return new sn(t.type,this,new rn(t.snapshotNode,n,r),t.prevName)},fn.prototype.getEventRunner=function(t){var e=this.context_;if("cancel"===t.getEventType()){C(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)}},fn.prototype.matches=function(e){var n=this;if(e instanceof fn){if(!this.callbacks_||!e.callbacks_)return!0;if(this.context_===e.context_){var t=Object.keys(e.callbacks_),r=Object.keys(this.callbacks_),i=t.length;if(i===r.length){if(1!==i)return r.every(function(t){return e.callbacks_[t]===n.callbacks_[t]});var o=t[0],s=r[0];return!(s!==o||e.callbacks_[o]&&this.callbacks_[s]&&e.callbacks_[o]!==this.callbacks_[s])}}}return!1},fn.prototype.hasAnyCallback=function(){return null!==this.callbacks_},fn);function fn(t,e,n){this.callbacks_=t,this.cancelCallback_=e,this.context_=n}var _n=(Object.defineProperty(yn,"__referenceConstructor",{get:function(){return C(pn,"Reference.ts has not been loaded"),pn},set:function(t){pn=t},enumerable:!0,configurable:!0}),yn.validateQueryEndpoints_=function(t){var e=null,n=null;if(t.hasStart()&&(e=t.getIndexStartValue()),t.hasEnd()&&(n=t.getIndexEndValue()),t.getIndex()===fe){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()!=_t)throw new Error(r);if("string"!=typeof e)throw new Error(i)}if(t.hasEnd()){if(t.getIndexEndName()!=yt)throw new Error(r);if("string"!=typeof n)throw new Error(i)}}else if(t.getIndex()===Se){if(null!=e&&!Mt(e)||null!=n&&!Mt(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(C(t.getIndex()instanceof en||t.getIndex()===tn,"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.")},yn.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.")},yn.prototype.validateNoPreviousOrderByCall_=function(t){if(!0===this.orderByCalled_)throw new Error(t+": You can't combine multiple orderBy calls.")},yn.prototype.getQueryParams=function(){return this.queryParams_},yn.prototype.getRef=function(){return k("Query.ref",0,0,arguments.length),new yn.__referenceConstructor(this.repo,this.path)},yn.prototype.on=function(t,e,n,r){k("Query.on",2,4,arguments.length),Ut("Query.on",1,t,!1),A("Query.on",2,e,!1);var i=yn.getCancelAndContextArgs_("Query.on",n,r);if("value"===t)this.onValueEvent(e,i.cancel,i.context);else{var o={};o[t]=e,this.onChildEvent(o,i.cancel,i.context)}return e},yn.prototype.onValueEvent=function(t,e,n){var r=new un(t,e||null,n||null);this.repo.addEventCallbackForQuery(this,r)},yn.prototype.onChildEvent=function(t,e,n){var r=new dn(t,e,n);this.repo.addEventCallbackForQuery(this,r)},yn.prototype.off=function(t,e,n){k("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 un(e||null,null,n||null):t&&(e&&((i={})[t]=e),r=new dn(i,null,n||null)),this.repo.removeEventCallbackForQuery(this,r)},yn.prototype.once=function(e,n,t,r){var i=this;k("Query.once",1,4,arguments.length),Ut("Query.once",1,e,!1),A("Query.once",2,n,!0);var o=yn.getCancelAndContextArgs_("Query.once",t,r),s=!0,a=new p;a.promise.catch(function(){});var h=function(t){s&&(s=!1,i.off(e,h),n&&n.bind(o.context)(t),a.resolve(t))};return this.on(e,h,function(t){i.off(e,h),o.cancel&&o.cancel.bind(o.context)(t),a.reject(t)}),a.promise},yn.prototype.limitToFirst=function(t){if(k("Query.limitToFirst",1,1,arguments.length),"number"!=typeof t||Math.floor(t)!==t||t<=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 yn(this.repo,this.path,this.queryParams_.limitToFirst(t),this.orderByCalled_)},yn.prototype.limitToLast=function(t){if(k("Query.limitToLast",1,1,arguments.length),"number"!=typeof t||Math.floor(t)!==t||t<=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 yn(this.repo,this.path,this.queryParams_.limitToLast(t),this.orderByCalled_)},yn.prototype.orderByChild=function(t){if(k("Query.orderByChild",1,1,arguments.length),"$key"===t)throw new Error('Query.orderByChild: "$key" is invalid.  Use Query.orderByKey() instead.');if("$priority"===t)throw new Error('Query.orderByChild: "$priority" is invalid.  Use Query.orderByPriority() instead.');if("$value"===t)throw new Error('Query.orderByChild: "$value" is invalid.  Use Query.orderByValue() instead.');Ht("Query.orderByChild",1,t,!1),this.validateNoPreviousOrderByCall_("Query.orderByChild");var e=new Tt(t);if(e.isEmpty())throw new Error("Query.orderByChild: cannot pass in empty path.  Use Query.orderByValue() instead.");var n=new en(e),r=this.queryParams_.orderBy(n);return yn.validateQueryEndpoints_(r),new yn(this.repo,this.path,r,!0)},yn.prototype.orderByKey=function(){k("Query.orderByKey",0,0,arguments.length),this.validateNoPreviousOrderByCall_("Query.orderByKey");var t=this.queryParams_.orderBy(fe);return yn.validateQueryEndpoints_(t),new yn(this.repo,this.path,t,!0)},yn.prototype.orderByPriority=function(){k("Query.orderByPriority",0,0,arguments.length),this.validateNoPreviousOrderByCall_("Query.orderByPriority");var t=this.queryParams_.orderBy(Se);return yn.validateQueryEndpoints_(t),new yn(this.repo,this.path,t,!0)},yn.prototype.orderByValue=function(){k("Query.orderByValue",0,0,arguments.length),this.validateNoPreviousOrderByCall_("Query.orderByValue");var t=this.queryParams_.orderBy(tn);return yn.validateQueryEndpoints_(t),new yn(this.repo,this.path,t,!0)},yn.prototype.startAt=function(t,e){void 0===t&&(t=null),k("Query.startAt",0,2,arguments.length),Wt("Query.startAt",1,t,this.path,!0),Vt("Query.startAt",2,e,!0);var n=this.queryParams_.startAt(t,e);if(yn.validateLimit_(n),yn.validateQueryEndpoints_(n),this.queryParams_.hasStart())throw new Error("Query.startAt: Starting point was already set (by another call to startAt or equalTo).");return void 0===t&&(e=t=null),new yn(this.repo,this.path,n,this.orderByCalled_)},yn.prototype.endAt=function(t,e){void 0===t&&(t=null),k("Query.endAt",0,2,arguments.length),Wt("Query.endAt",1,t,this.path,!0),Vt("Query.endAt",2,e,!0);var n=this.queryParams_.endAt(t,e);if(yn.validateLimit_(n),yn.validateQueryEndpoints_(n),this.queryParams_.hasEnd())throw new Error("Query.endAt: Ending point was already set (by another call to endAt or equalTo).");return new yn(this.repo,this.path,n,this.orderByCalled_)},yn.prototype.equalTo=function(t,e){if(k("Query.equalTo",1,2,arguments.length),Wt("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)},yn.prototype.toString=function(){return k("Query.toString",0,0,arguments.length),this.repo.toString()+this.path.toUrlEncodedString()},yn.prototype.toJSON=function(){return k("Query.toJSON",0,1,arguments.length),this.toString()},yn.prototype.queryObject=function(){return this.queryParams_.getQueryObject()},yn.prototype.queryIdentifier=function(){var t=this.queryObject(),e=gt(t);return"{}"===e?"default":e},yn.prototype.isEqual=function(t){if(k("Query.isEqual",1,1,arguments.length),!(t instanceof yn))throw new Error("Query.isEqual failed: First argument must be an instance of firebase.database.Query.");var e=this.repo===t.repo,n=this.path.equals(t.path),r=this.queryIdentifier()===t.queryIdentifier();return e&&n&&r},yn.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(yn.prototype,"ref",{get:function(){return this.getRef()},enumerable:!0,configurable:!0}),yn);function yn(t,e,n,r){this.repo=t,this.path=e,this.queryParams_=n,this.orderByCalled_=r}var vn=(gn.prototype.find=function(t){if(null!=this.value)return this.value.getChild(t);if(!t.isEmpty()&&0<this.children.size){var e=t.getFront();return t=t.popFront(),this.children.has(e)?this.children.get(e).find(t):null}return null},gn.prototype.remember=function(t,e){if(t.isEmpty())this.value=e,this.children.clear();else if(null!==this.value)this.value=this.value.updateChild(t,e);else{var n=t.getFront();this.children.has(n)||this.children.set(n,new gn);var r=this.children.get(n);t=t.popFront(),r.remember(t,e)}},gn.prototype.forget=function(t){if(t.isEmpty())return this.value=null,this.children.clear(),!0;if(null!==this.value){if(this.value.isLeafNode())return!1;var e=this.value;this.value=null;var n=this;return e.forEachChild(Se,function(t,e){n.remember(new Tt(t),e)}),this.forget(t)}if(0<this.children.size){var r=t.getFront();return t=t.popFront(),!this.children.has(r)||this.children.get(r).forget(t)&&this.children.delete(r),0===this.children.size}return!0},gn.prototype.forEachTree=function(r,i){null!==this.value?i(r,this.value):this.forEachChild(function(t,e){var n=new Tt(r.toString()+"/"+t);e.forEachTree(n,i)})},gn.prototype.forEachChild=function(n){this.children.forEach(function(t,e){n(e,t)})},gn);function gn(){this.value=null,this.children=new Map}function mn(t,e){return t&&"object"==typeof t?(C(".sv"in t,"Unexpected leaf node or priority contents"),e[t[".sv"]]):t}var Cn,En,wn=function(t,r){var i,e=t.getPriority().val(),n=mn(e,r);if(t.isLeafNode()){var o=t,s=mn(o.getValue(),r);return s!==o.getValue()||n!==o.getPriority().val()?new Ee(s,$e(n)):t}var a=t;return n!==(i=a).getPriority().val()&&(i=i.updatePriority(new Ee(n))),a.forEachChild(Se,function(t,e){var n=wn(e,r);n!==e&&(i=i.updateImmediateChild(t,n))}),i};(En=Cn=Cn||{})[En.OVERWRITE=0]="OVERWRITE",En[En.MERGE=1]="MERGE",En[En.ACK_USER_WRITE=2]="ACK_USER_WRITE",En[En.LISTEN_COMPLETE=3]="LISTEN_COMPLETE";var bn=(Sn.User=new Sn(!0,!1,null,!1),Sn.Server=new Sn(!1,!0,null,!1),Sn.forServerTaggedQuery=function(t){return new Sn(!1,!0,t,!0)},Sn);function Sn(t,e,n,r){this.fromUser=t,this.fromServer=e,this.queryId=n,this.tagged=r,C(!r||e,"Tagged queries must be from server.")}var Tn,In=(Nn.prototype.operationForChild=function(t){if(this.path.isEmpty()){if(null!=this.affectedTree.value)return C(this.affectedTree.children.isEmpty(),"affectedTree should not have overlapping affected paths."),this;var e=this.affectedTree.subtree(new Tt(t));return new Nn(Tt.Empty,e,this.revert)}return C(this.path.getFront()===t,"operationForChild called for unrelated child."),new Nn(this.path.popFront(),this.affectedTree,this.revert)},Nn);function Nn(t,e,n){this.path=t,this.affectedTree=e,this.revert=n,this.type=Cn.ACK_USER_WRITE,this.source=bn.User}var Rn=(Pn.fromObject=function(t){var n=Pn.Empty;return mt(t,function(t,e){n=n.set(new Tt(t),e)}),n},Pn.prototype.isEmpty=function(){return null===this.value&&this.children.isEmpty()},Pn.prototype.findRootMostMatchingPathAndValue=function(t,e){if(null!=this.value&&e(this.value))return{path:Tt.Empty,value:this.value};if(t.isEmpty())return null;var n=t.getFront(),r=this.children.get(n);if(null===r)return null;var i=r.findRootMostMatchingPathAndValue(t.popFront(),e);return null==i?null:{path:new Tt(n).child(i.path),value:i.value}},Pn.prototype.findRootMostValueAndPath=function(t){return this.findRootMostMatchingPathAndValue(t,function(){return!0})},Pn.prototype.subtree=function(t){if(t.isEmpty())return this;var e=t.getFront(),n=this.children.get(e);return null!==n?n.subtree(t.popFront()):Pn.Empty},Pn.prototype.set=function(t,e){if(t.isEmpty())return new Pn(e,this.children);var n=t.getFront(),r=(this.children.get(n)||Pn.Empty).set(t.popFront(),e),i=this.children.insert(n,r);return new Pn(this.value,i)},Pn.prototype.remove=function(t){if(t.isEmpty())return this.children.isEmpty()?Pn.Empty:new Pn(null,this.children);var e=t.getFront(),n=this.children.get(e);if(n){var r=n.remove(t.popFront()),i=void 0;return i=r.isEmpty()?this.children.remove(e):this.children.insert(e,r),null===this.value&&i.isEmpty()?Pn.Empty:new Pn(this.value,i)}return this},Pn.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},Pn.prototype.setTree=function(t,e){if(t.isEmpty())return e;var n=t.getFront(),r=(this.children.get(n)||Pn.Empty).setTree(t.popFront(),e),i=void 0;return i=r.isEmpty()?this.children.remove(n):this.children.insert(n,r),new Pn(this.value,i)},Pn.prototype.fold=function(t){return this.fold_(Tt.Empty,t)},Pn.prototype.fold_=function(n,r){var i={};return this.children.inorderTraversal(function(t,e){i[t]=e.fold_(n.child(t),r)}),r(n,this.value,i)},Pn.prototype.findOnPath=function(t,e){return this.findOnPath_(t,Tt.Empty,e)},Pn.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},Pn.prototype.foreachOnPath=function(t,e){return this.foreachOnPath_(t,Tt.Empty,e)},Pn.prototype.foreachOnPath_=function(t,e,n){if(t.isEmpty())return this;this.value&&n(e,this.value);var r=t.getFront(),i=this.children.get(r);return i?i.foreachOnPath_(t.popFront(),e.child(r),n):Pn.Empty},Pn.prototype.foreach=function(t){this.foreach_(Tt.Empty,t)},Pn.prototype.foreach_=function(n,r){this.children.inorderTraversal(function(t,e){e.foreach_(n.child(t),r)}),this.value&&r(n,this.value)},Pn.prototype.foreachChild=function(n){this.children.inorderTraversal(function(t,e){e.value&&n(t,e.value)})},Pn.Empty=new Pn(null),Pn);function Pn(t,e){void 0===e&&(e=Tn=Tn||new Oe(rt)),this.value=t,this.children=e}var Dn=(On.prototype.operationForChild=function(t){return this.path.isEmpty()?new On(this.source,Tt.Empty):new On(this.source,this.path.popFront())},On);function On(t,e){this.source=t,this.path=e,this.type=Cn.LISTEN_COMPLETE}var xn=(kn.prototype.operationForChild=function(t){return this.path.isEmpty()?new kn(this.source,Tt.Empty,this.snap.getImmediateChild(t)):new kn(this.source,this.path.popFront(),this.snap)},kn);function kn(t,e,n){this.source=t,this.path=e,this.snap=n,this.type=Cn.OVERWRITE}var Fn=(An.prototype.operationForChild=function(t){if(this.path.isEmpty()){var e=this.children.subtree(new Tt(t));return e.isEmpty()?null:e.value?new xn(this.source,Tt.Empty,e.value):new An(this.source,Tt.Empty,e)}return C(this.path.getFront()===t,"Can't get a merge for a child not on the path of the operation"),new An(this.source,this.path.popFront(),this.children)},An.prototype.toString=function(){return"Operation("+this.path+": "+this.source.toString()+" merge: "+this.children.toString()+")"},An);function An(t,e,n){this.source=t,this.path=e,this.children=n,this.type=Cn.MERGE}var Ln=(Mn.prototype.isFullyInitialized=function(){return this.fullyInitialized_},Mn.prototype.isFiltered=function(){return this.filtered_},Mn.prototype.isCompleteForPath=function(t){if(t.isEmpty())return this.isFullyInitialized()&&!this.filtered_;var e=t.getFront();return this.isCompleteForChild(e)},Mn.prototype.isCompleteForChild=function(t){return this.isFullyInitialized()&&!this.filtered_||this.node_.hasChild(t)},Mn.prototype.getNode=function(){return this.node_},Mn);function Mn(t,e,n){this.node_=t,this.fullyInitialized_=e,this.filtered_=n}var Wn=(Qn.prototype.updateEventSnap=function(t,e,n){return new Qn(new Ln(t,e,n),this.serverCache_)},Qn.prototype.updateServerSnap=function(t,e,n){return new Qn(this.eventCache_,new Ln(t,e,n))},Qn.prototype.getEventCache=function(){return this.eventCache_},Qn.prototype.getCompleteEventSnap=function(){return this.eventCache_.isFullyInitialized()?this.eventCache_.getNode():null},Qn.prototype.getServerCache=function(){return this.serverCache_},Qn.prototype.getCompleteServerSnap=function(){return this.serverCache_.isFullyInitialized()?this.serverCache_.getNode():null},Qn.Empty=new Qn(new Ln(je.EMPTY_NODE,!1,!1),new Ln(je.EMPTY_NODE,!1,!1)),Qn);function Qn(t,e){this.eventCache_=t,this.serverCache_=e}var qn=(Un.valueChange=function(t){return new Un(Un.VALUE,t)},Un.childAddedChange=function(t,e){return new Un(Un.CHILD_ADDED,e,t)},Un.childRemovedChange=function(t,e){return new Un(Un.CHILD_REMOVED,e,t)},Un.childChangedChange=function(t,e,n){return new Un(Un.CHILD_CHANGED,e,t,n)},Un.childMovedChange=function(t,e){return new Un(Un.CHILD_MOVED,e,t)},Un.CHILD_ADDED="child_added",Un.CHILD_REMOVED="child_removed",Un.CHILD_CHANGED="child_changed",Un.CHILD_MOVED="child_moved",Un.VALUE="value",Un);function Un(t,e,n,r,i){this.type=t,this.snapshotNode=e,this.childName=n,this.oldSnap=r,this.prevName=i}var Vn=(Hn.prototype.updateChild=function(t,e,n,r,i,o){C(t.isIndexed(this.index_),"A node must be indexed if only a child is updated");var s=t.getImmediateChild(e);return s.getChild(r).equals(n.getChild(r))&&s.isEmpty()==n.isEmpty()?t:(null!=o&&(n.isEmpty()?t.hasChild(e)?o.trackChildChange(qn.childRemovedChange(e,s)):C(t.isLeafNode(),"A child remove without an old child only makes sense on a leaf node"):s.isEmpty()?o.trackChildChange(qn.childAddedChange(e,n)):o.trackChildChange(qn.childChangedChange(e,n,s))),t.isLeafNode()&&n.isEmpty()?t:t.updateImmediateChild(e,n).withIndex(this.index_))},Hn.prototype.updateFullNode=function(r,n,i){return null!=i&&(r.isLeafNode()||r.forEachChild(Se,function(t,e){n.hasChild(t)||i.trackChildChange(qn.childRemovedChange(t,e))}),n.isLeafNode()||n.forEachChild(Se,function(t,e){if(r.hasChild(t)){var n=r.getImmediateChild(t);n.equals(e)||i.trackChildChange(qn.childChangedChange(t,e,n))}else i.trackChildChange(qn.childAddedChange(t,e))})),n.withIndex(this.index_)},Hn.prototype.updatePriority=function(t,e){return t.isEmpty()?je.EMPTY_NODE:t.updatePriority(e)},Hn.prototype.filtersNodes=function(){return!1},Hn.prototype.getIndexedFilter=function(){return this},Hn.prototype.getIndex=function(){return this.index_},Hn);function Hn(t){this.index_=t}var Bn=(jn.prototype.trackChildChange=function(t){var e=t.type,n=t.childName;C(e==qn.CHILD_ADDED||e==qn.CHILD_CHANGED||e==qn.CHILD_REMOVED,"Only child changes supported for tracking"),C(".priority"!==n,"Only non-priority child changes can be tracked.");var r=this.changeMap.get(n);if(r){var i=r.type;if(e==qn.CHILD_ADDED&&i==qn.CHILD_REMOVED)this.changeMap.set(n,qn.childChangedChange(n,t.snapshotNode,r.snapshotNode));else if(e==qn.CHILD_REMOVED&&i==qn.CHILD_ADDED)this.changeMap.delete(n);else if(e==qn.CHILD_REMOVED&&i==qn.CHILD_CHANGED)this.changeMap.set(n,qn.childRemovedChange(n,r.oldSnap));else if(e==qn.CHILD_CHANGED&&i==qn.CHILD_ADDED)this.changeMap.set(n,qn.childAddedChange(n,t.snapshotNode));else{if(e!=qn.CHILD_CHANGED||i!=qn.CHILD_CHANGED)throw c("Illegal combination of changes: "+t+" occurred after "+r);this.changeMap.set(n,qn.childChangedChange(n,t.snapshotNode,r.oldSnap))}}else this.changeMap.set(n,t)},jn.prototype.getChanges=function(){return Array.from(this.changeMap.values())},jn);function jn(){this.changeMap=new Map}function Kn(){}var Yn=new(Kn.prototype.getCompleteChild=function(t){return null},Kn.prototype.getChildAfterChild=function(t,e,n){return null},Kn),zn=(Gn.prototype.getCompleteChild=function(t){var e=this.viewCache_.getEventCache();if(e.isCompleteForChild(t))return e.getNode().getImmediateChild(t);var n=null!=this.optCompleteServerCache_?new Ln(this.optCompleteServerCache_,!0,!1):this.viewCache_.getServerCache();return this.writes_.calcCompleteChild(t,n)},Gn.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]},Gn);function Gn(t,e,n){void 0===n&&(n=null),this.writes_=t,this.viewCache_=e,this.optCompleteServerCache_=n}var Xn=function(t,e){this.viewCache=t,this.changes=e},$n=(Jn.prototype.assertIndexed=function(t){C(t.getEventCache().getNode().isIndexed(this.filter_.getIndex()),"Event snap not indexed"),C(t.getServerCache().getNode().isIndexed(this.filter_.getIndex()),"Server snap not indexed")},Jn.prototype.applyOperation=function(t,e,n,r){var i,o,s=new Bn;if(e.type===Cn.OVERWRITE){var a=e;i=a.source.fromUser?this.applyUserOverwrite_(t,a.path,a.snap,n,r,s):(C(a.source.fromServer,"Unknown source."),o=a.source.tagged||t.getServerCache().isFiltered()&&!a.path.isEmpty(),this.applyServerOverwrite_(t,a.path,a.snap,n,r,o,s))}else if(e.type===Cn.MERGE){var h=e;i=h.source.fromUser?this.applyUserMerge_(t,h.path,h.children,n,r,s):(C(h.source.fromServer,"Unknown source."),o=h.source.tagged||t.getServerCache().isFiltered(),this.applyServerMerge_(t,h.path,h.children,n,r,o,s))}else if(e.type===Cn.ACK_USER_WRITE){var l=e;i=l.revert?this.revertUserWrite_(t,l.path,n,r,s):this.ackUserWrite_(t,l.path,l.affectedTree,n,r,s)}else{if(e.type!==Cn.LISTEN_COMPLETE)throw c("Unknown operation type: "+e.type);i=this.listenComplete_(t,e.path,n,s)}var u=s.getChanges();return Jn.maybeAddValueEvent_(t,i,u),new Xn(i,u)},Jn.maybeAddValueEvent_=function(t,e,n){var r=e.getEventCache();if(r.isFullyInitialized()){var i=r.getNode().isLeafNode()||r.getNode().isEmpty(),o=t.getCompleteEventSnap();(0<n.length||!t.getEventCache().isFullyInitialized()||i&&!r.getNode().equals(o)||!r.getNode().getPriority().equals(o.getPriority()))&&n.push(qn.valueChange(e.getCompleteEventSnap()))}},Jn.prototype.generateEventCacheAfterServerEvent_=function(t,e,n,r,i){var o=t.getEventCache();if(null!=n.shadowingWrite(e))return t;var s=void 0,a=void 0;if(e.isEmpty())if(C(t.getServerCache().isFullyInitialized(),"If change path is empty, we must have complete server data"),t.getServerCache().isFiltered()){var h=t.getCompleteServerSnap(),l=h instanceof je?h:je.EMPTY_NODE,u=n.calcCompleteEventChildren(l);s=this.filter_.updateFullNode(t.getEventCache().getNode(),u,i)}else{var c=n.calcCompleteEventCache(t.getCompleteServerSnap());s=this.filter_.updateFullNode(t.getEventCache().getNode(),c,i)}else{var p=e.getFront();if(".priority"==p){C(1==e.getLength(),"Can't have a priority with additional path components");var d=o.getNode();a=t.getServerCache().getNode();var f=n.calcEventCacheAfterServerOverwrite(e,d,a);s=null!=f?this.filter_.updatePriority(d,f):o.getNode()}else{var _=e.popFront(),y=void 0;if(o.isCompleteForChild(p)){a=t.getServerCache().getNode();var v=n.calcEventCacheAfterServerOverwrite(e,o.getNode(),a);y=null!=v?o.getNode().getImmediateChild(p).updateChild(_,v):o.getNode().getImmediateChild(p)}else y=n.calcCompleteChild(p,t.getServerCache());s=null!=y?this.filter_.updateChild(o.getNode(),p,y,_,r,i):o.getNode()}}return t.updateEventSnap(s,o.isFullyInitialized()||e.isEmpty(),this.filter_.filtersNodes())},Jn.prototype.applyServerOverwrite_=function(t,e,n,r,i,o,s){var a,h=t.getServerCache(),l=o?this.filter_:this.filter_.getIndexedFilter();if(e.isEmpty())a=l.updateFullNode(h.getNode(),n,null);else if(l.filtersNodes()&&!h.isFiltered()){var u=h.getNode().updateChild(e,n);a=l.updateFullNode(h.getNode(),u,null)}else{var c=e.getFront();if(!h.isCompleteForPath(e)&&1<e.getLength())return t;var p=e.popFront(),d=h.getNode().getImmediateChild(c).updateChild(p,n);a=".priority"==c?l.updatePriority(h.getNode(),d):l.updateChild(h.getNode(),c,d,p,Yn,null)}var f=t.updateServerSnap(a,h.isFullyInitialized()||e.isEmpty(),l.filtersNodes()),_=new zn(r,f,i);return this.generateEventCacheAfterServerEvent_(f,e,r,_,s)},Jn.prototype.applyUserOverwrite_=function(t,e,n,r,i,o){var s,a,h=t.getEventCache(),l=new zn(r,t,i);if(e.isEmpty())a=this.filter_.updateFullNode(t.getEventCache().getNode(),n,o),s=t.updateEventSnap(a,!0,this.filter_.filtersNodes());else{var u=e.getFront();if(".priority"===u)a=this.filter_.updatePriority(t.getEventCache().getNode(),n),s=t.updateEventSnap(a,h.isFullyInitialized(),h.isFiltered());else{var c=e.popFront(),p=h.getNode().getImmediateChild(u),d=void 0;if(c.isEmpty())d=n;else{var f=l.getCompleteChild(u);d=null!=f?".priority"===c.getBack()&&f.getChild(c.parent()).isEmpty()?f:f.updateChild(c,n):je.EMPTY_NODE}if(p.equals(d))s=t;else{var _=this.filter_.updateChild(h.getNode(),u,d,c,l,o);s=t.updateEventSnap(_,h.isFullyInitialized(),this.filter_.filtersNodes())}}}return s},Jn.cacheHasChild_=function(t,e){return t.getEventCache().isCompleteForChild(e)},Jn.prototype.applyUserMerge_=function(r,i,t,o,s,a){var h=this,l=r;return t.foreach(function(t,e){var n=i.child(t);Jn.cacheHasChild_(r,n.getFront())&&(l=h.applyUserOverwrite_(l,n,e,o,s,a))}),t.foreach(function(t,e){var n=i.child(t);Jn.cacheHasChild_(r,n.getFront())||(l=h.applyUserOverwrite_(l,n,e,o,s,a))}),l},Jn.prototype.applyMerge_=function(n,t){return t.foreach(function(t,e){n=n.updateChild(t,e)}),n},Jn.prototype.applyServerMerge_=function(o,t,e,s,a,h,l){var u=this;if(o.getServerCache().getNode().isEmpty()&&!o.getServerCache().isFullyInitialized())return o;var n,c=o;n=t.isEmpty()?e:Rn.Empty.setTree(t,e);var p=o.getServerCache().getNode();return n.children.inorderTraversal(function(t,e){if(p.hasChild(t)){var n=o.getServerCache().getNode().getImmediateChild(t),r=u.applyMerge_(n,e);c=u.applyServerOverwrite_(c,new Tt(t),r,s,a,h,l)}}),n.children.inorderTraversal(function(t,e){var n=!o.getServerCache().isCompleteForChild(t)&&null==e.value;if(!p.hasChild(t)&&!n){var r=o.getServerCache().getNode().getImmediateChild(t),i=u.applyMerge_(r,e);c=u.applyServerOverwrite_(c,new Tt(t),i,s,a,h,l)}}),c},Jn.prototype.ackUserWrite_=function(t,r,e,n,i,o){if(null!=n.shadowingWrite(r))return t;var s=t.getServerCache().isFiltered(),a=t.getServerCache();if(null!=e.value){if(r.isEmpty()&&a.isFullyInitialized()||a.isCompleteForPath(r))return this.applyServerOverwrite_(t,r,a.getNode().getChild(r),n,i,s,o);if(r.isEmpty()){var h=Rn.Empty;return a.getNode().forEachChild(fe,function(t,e){h=h.set(new Tt(t),e)}),this.applyServerMerge_(t,r,h,n,i,s,o)}return t}var l=Rn.Empty;return e.foreach(function(t,e){var n=r.child(t);a.isCompleteForPath(n)&&(l=l.set(t,a.getNode().getChild(n)))}),this.applyServerMerge_(t,r,l,n,i,s,o)},Jn.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,Yn,r)},Jn.prototype.revertUserWrite_=function(t,e,n,r,i){var o;if(null!=n.shadowingWrite(e))return t;var s=new zn(n,t,r),a=t.getEventCache().getNode(),h=void 0;if(e.isEmpty()||".priority"===e.getFront()){var l=void 0;if(t.getServerCache().isFullyInitialized())l=n.calcCompleteEventCache(t.getCompleteServerSnap());else{var u=t.getServerCache().getNode();C(u instanceof je,"serverChildren would be complete if leaf node"),l=n.calcCompleteEventChildren(u)}l=l,h=this.filter_.updateFullNode(a,l,i)}else{var c=e.getFront(),p=n.calcCompleteChild(c,t.getServerCache());null==p&&t.getServerCache().isCompleteForChild(c)&&(p=a.getImmediateChild(c)),(h=null!=p?this.filter_.updateChild(a,c,p,e.popFront(),s,i):t.getEventCache().getNode().hasChild(c)?this.filter_.updateChild(a,c,je.EMPTY_NODE,e.popFront(),s,i):a).isEmpty()&&t.getServerCache().isFullyInitialized()&&(o=n.calcCompleteEventCache(t.getCompleteServerSnap())).isLeafNode()&&(h=this.filter_.updateFullNode(h,o,i))}return o=t.getServerCache().isFullyInitialized()||null!=n.shadowingWrite(Tt.Empty),t.updateEventSnap(h,o,this.filter_.filtersNodes())},Jn);function Jn(t){this.filter_=t}var Zn=(tr.prototype.generateEventsForChanges=function(t,e,n){var r=this,i=[],o=[];return t.forEach(function(t){t.type===qn.CHILD_CHANGED&&r.index_.indexedValueChanged(t.oldSnap,t.snapshotNode)&&o.push(qn.childMovedChange(t.childName,t.snapshotNode))}),this.generateEventsForType_(i,qn.CHILD_REMOVED,t,n,e),this.generateEventsForType_(i,qn.CHILD_ADDED,t,n,e),this.generateEventsForType_(i,qn.CHILD_MOVED,o,n,e),this.generateEventsForType_(i,qn.CHILD_CHANGED,t,n,e),this.generateEventsForType_(i,qn.VALUE,t,n,e),i},tr.prototype.generateEventsForType_=function(r,e,t,i,o){var s=this,n=t.filter(function(t){return t.type===e});n.sort(this.compareChanges_.bind(this)),n.forEach(function(e){var n=s.materializeSingleChange_(e,o);i.forEach(function(t){t.respondsTo(e.type)&&r.push(t.createEvent(n,s.query_))})})},tr.prototype.materializeSingleChange_=function(t,e){return"value"===t.type||"child_removed"===t.type||(t.prevName=e.getPredecessorChildName(t.childName,t.snapshotNode,this.index_)),t},tr.prototype.compareChanges_=function(t,e){if(null==t.childName||null==e.childName)throw c("Should only compare child_ events.");var n=new oe(t.childName,t.snapshotNode),r=new oe(e.childName,e.snapshotNode);return this.index_.compare(n,r)},tr);function tr(t){this.query_=t,this.index_=this.query_.getQueryParams().getIndex()}var er,nr=(rr.prototype.getQuery=function(){return this.query_},rr.prototype.getServerCache=function(){return this.viewCache_.getServerCache().getNode()},rr.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},rr.prototype.isEmpty=function(){return 0===this.eventRegistrations_.length},rr.prototype.addEventRegistration=function(t){this.eventRegistrations_.push(t)},rr.prototype.removeEventRegistration=function(t,n){var r=[];if(n){C(null==t,"A cancel should cancel all event registrations.");var i=this.query_.path;this.eventRegistrations_.forEach(function(t){n=n;var e=t.createCancelEvent(n,i);e&&r.push(e)})}if(t){for(var e=[],o=0;o<this.eventRegistrations_.length;++o){var s=this.eventRegistrations_[o];if(s.matches(t)){if(t.hasAnyCallback()){e=e.concat(this.eventRegistrations_.slice(o+1));break}}else e.push(s)}this.eventRegistrations_=e}else this.eventRegistrations_=[];return r},rr.prototype.applyOperation=function(t,e,n){t.type===Cn.MERGE&&null!==t.source.queryId&&(C(this.viewCache_.getCompleteServerSnap(),"We should always have a full cache before handling merges"),C(this.viewCache_.getCompleteEventSnap(),"Missing event cache, even though we have a server cache"));var r=this.viewCache_,i=this.processor_.applyOperation(r,t,e,n);return this.processor_.assertIndexed(i.viewCache),C(i.viewCache.getServerCache().isFullyInitialized()||!r.getServerCache().isFullyInitialized(),"Once a server snap is complete, it should never go back"),this.viewCache_=i.viewCache,this.generateEventsForChanges_(i.changes,i.viewCache.getEventCache().getNode(),null)},rr.prototype.getInitialEvents=function(t){var e=this.viewCache_.getEventCache(),n=[];return e.getNode().isLeafNode()||e.getNode().forEachChild(Se,function(t,e){n.push(qn.childAddedChange(t,e))}),e.isFullyInitialized()&&n.push(qn.valueChange(e.getNode())),this.generateEventsForChanges_(n,e.getNode(),t)},rr.prototype.generateEventsForChanges_=function(t,e,n){var r=n?[n]:this.eventRegistrations_;return this.eventGenerator_.generateEventsForChanges(t,e,r)},rr);function rr(t,e){this.query_=t,this.eventRegistrations_=[];var n=this.query_.getQueryParams(),r=new Vn(n.getIndex()),i=n.getNodeFilter();this.processor_=new $n(i);var o=e.getServerCache(),s=e.getEventCache(),a=r.updateFullNode(je.EMPTY_NODE,o.getNode(),null),h=i.updateFullNode(je.EMPTY_NODE,s.getNode(),null),l=new Ln(a,o.isFullyInitialized(),r.filtersNodes()),u=new Ln(h,s.isFullyInitialized(),i.filtersNodes());this.viewCache_=new Wn(u,l),this.eventGenerator_=new Zn(this.query_)}var ir=(Object.defineProperty(or,"__referenceConstructor",{get:function(){return C(er,"Reference.ts has not been loaded"),er},set:function(t){C(!er,"__referenceConstructor has already been defined"),er=t},enumerable:!0,configurable:!0}),or.prototype.isEmpty=function(){return 0===this.views.size},or.prototype.applyOperation=function(t,e,n){var r,i,o=t.source.queryId;if(null!==o){var s=this.views.get(o);return C(null!=s,"SyncTree gave us an op for an invalid query."),s.applyOperation(t,e,n)}var a=[];try{for(var h=f(this.views.values()),l=h.next();!l.done;l=h.next())s=l.value,a=a.concat(s.applyOperation(t,e,n))}catch(t){r={error:t}}finally{try{l&&!l.done&&(i=h.return)&&i.call(h)}finally{if(r)throw r.error}}return a},or.prototype.addEventRegistration=function(t,e,n,r,i){var o=t.queryIdentifier(),s=this.views.get(o);if(!s){var a=n.calcCompleteEventCache(i?r:null),h=!1;h=!!a||(a=r instanceof je?n.calcCompleteEventChildren(r):je.EMPTY_NODE,!1);var l=new Wn(new Ln(a,h,!1),new Ln(r,i,!1));s=new nr(t,l),this.views.set(o,s)}return s.addEventRegistration(e),s.getInitialEvents(e)},or.prototype.removeEventRegistration=function(t,e,n){var r,i,o=t.queryIdentifier(),s=[],a=[],h=this.hasCompleteView();if("default"===o)try{for(var l=f(this.views.entries()),u=l.next();!u.done;u=l.next()){var c=_(u.value,2),p=c[0],d=c[1];a=a.concat(d.removeEventRegistration(e,n)),d.isEmpty()&&(this.views.delete(p),d.getQuery().getQueryParams().loadsAllData()||s.push(d.getQuery()))}}catch(t){r={error:t}}finally{try{u&&!u.done&&(i=l.return)&&i.call(l)}finally{if(r)throw r.error}}else(d=this.views.get(o))&&(a=a.concat(d.removeEventRegistration(e,n)),d.isEmpty()&&(this.views.delete(o),d.getQuery().getQueryParams().loadsAllData()||s.push(d.getQuery())));return h&&!this.hasCompleteView()&&s.push(new or.__referenceConstructor(t.repo,t.path)),{removed:s,events:a}},or.prototype.getQueryViews=function(){var e,t,n=[];try{for(var r=f(this.views.values()),i=r.next();!i.done;i=r.next()){var o=i.value;o.getQuery().getQueryParams().loadsAllData()||n.push(o)}}catch(t){e={error:t}}finally{try{i&&!i.done&&(t=r.return)&&t.call(r)}finally{if(e)throw e.error}}return n},or.prototype.getCompleteServerCache=function(t){var e,n,r=null;try{for(var i=f(this.views.values()),o=i.next();!o.done;o=i.next()){var s=o.value;r=r||s.getCompleteServerCache(t)}}catch(t){e={error:t}}finally{try{o&&!o.done&&(n=i.return)&&n.call(i)}finally{if(e)throw e.error}}return r},or.prototype.viewForQuery=function(t){if(t.getQueryParams().loadsAllData())return this.getCompleteView();var e=t.queryIdentifier();return this.views.get(e)},or.prototype.viewExistsForQuery=function(t){return null!=this.viewForQuery(t)},or.prototype.hasCompleteView=function(){return null!=this.getCompleteView()},or.prototype.getCompleteView=function(){var e,t;try{for(var n=f(this.views.values()),r=n.next();!r.done;r=n.next()){var i=r.value;if(i.getQuery().getQueryParams().loadsAllData())return i}}catch(t){e={error:t}}finally{try{r&&!r.done&&(t=n.return)&&t.call(n)}finally{if(e)throw e.error}}return null},or);function or(){this.views=new Map}var sr=(ar.prototype.addWrite=function(t,e){if(t.isEmpty())return new ar(new Rn(e));var n=this.writeTree_.findRootMostValueAndPath(t);if(null!=n){var r=n.path,i=n.value,o=Tt.relativePath(r,t);return i=i.updateChild(o,e),new ar(this.writeTree_.set(r,i))}var s=new Rn(e);return new ar(this.writeTree_.setTree(t,s))},ar.prototype.addWrites=function(n,t){var r=this;return mt(t,function(t,e){r=r.addWrite(n.child(t),e)}),r},ar.prototype.removeWrite=function(t){return t.isEmpty()?ar.Empty:new ar(this.writeTree_.setTree(t,Rn.Empty))},ar.prototype.hasCompleteWrite=function(t){return null!=this.getCompleteNode(t)},ar.prototype.getCompleteNode=function(t){var e=this.writeTree_.findRootMostValueAndPath(t);return null!=e?this.writeTree_.get(e.path).getChild(Tt.relativePath(e.path,t)):null},ar.prototype.getCompleteChildren=function(){var n=[],t=this.writeTree_.value;return null!=t?t.isLeafNode()||t.forEachChild(Se,function(t,e){n.push(new oe(t,e))}):this.writeTree_.children.inorderTraversal(function(t,e){null!=e.value&&n.push(new oe(t,e.value))}),n},ar.prototype.childCompoundWrite=function(t){if(t.isEmpty())return this;var e=this.getCompleteNode(t);return new ar(null!=e?new Rn(e):this.writeTree_.subtree(t))},ar.prototype.isEmpty=function(){return this.writeTree_.isEmpty()},ar.prototype.apply=function(t){return function n(r,t,i){if(null!=t.value)return i.updateChild(r,t.value);var o=null;return t.children.inorderTraversal(function(t,e){".priority"===t?(C(null!==e.value,"Priority writes must always be leaf nodes"),o=e.value):i=n(r.child(t),e,i)}),i.getChild(r).isEmpty()||null===o||(i=i.updateChild(r.child(".priority"),o)),i}(Tt.Empty,this.writeTree_,t)},ar.Empty=new ar(new Rn(null)),ar);function ar(t){this.writeTree_=t}var hr=(lr.prototype.childWrites=function(t){return new ur(t,this)},lr.prototype.addOverwrite=function(t,e,n,r){C(n>this.lastWriteId_,"Stacking an older write on top of newer ones"),void 0===r&&(r=!0),this.allWrites_.push({path:t,snap:e,writeId:n,visible:r}),r&&(this.visibleWrites_=this.visibleWrites_.addWrite(t,e)),this.lastWriteId_=n},lr.prototype.addMerge=function(t,e,n){C(n>this.lastWriteId_,"Stacking an older merge on top of newer ones"),this.allWrites_.push({path:t,children:e,writeId:n,visible:!0}),this.visibleWrites_=this.visibleWrites_.addWrites(t,e),this.lastWriteId_=n},lr.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},lr.prototype.removeWrite=function(e){var n=this,t=this.allWrites_.findIndex(function(t){return t.writeId===e});C(0<=t,"removeWrite called with nonexistent writeId.");var r=this.allWrites_[t];this.allWrites_.splice(t,1);for(var i=r.visible,o=!1,s=this.allWrites_.length-1;i&&0<=s;){var a=this.allWrites_[s];a.visible&&(t<=s&&this.recordContainsPath_(a,r.path)?i=!1:r.path.contains(a.path)&&(o=!0)),s--}return!!i&&(o?this.resetTree_():r.snap?this.visibleWrites_=this.visibleWrites_.removeWrite(r.path):mt(r.children,function(t){n.visibleWrites_=n.visibleWrites_.removeWrite(r.path.child(t))}),!0)},lr.prototype.getCompleteWriteData=function(t){return this.visibleWrites_.getCompleteNode(t)},lr.prototype.calcCompleteEventCache=function(e,t,n,r){if(n||r){var i=this.visibleWrites_.childCompoundWrite(e);if(!r&&i.isEmpty())return t;if(r||null!=t||i.hasCompleteWrite(Tt.Empty)){var o=lr.layerTree_(this.allWrites_,function(t){return(t.visible||r)&&(!n||!~n.indexOf(t.writeId))&&(t.path.contains(e)||e.contains(t.path))},e);return h=t||je.EMPTY_NODE,o.apply(h)}return null}var s=this.visibleWrites_.getCompleteNode(e);if(null!=s)return s;var a=this.visibleWrites_.childCompoundWrite(e);if(a.isEmpty())return t;if(null!=t||a.hasCompleteWrite(Tt.Empty)){var h=t||je.EMPTY_NODE;return a.apply(h)}return null},lr.prototype.calcCompleteEventChildren=function(t,e){var r=je.EMPTY_NODE,n=this.visibleWrites_.getCompleteNode(t);if(n)return n.isLeafNode()||n.forEachChild(Se,function(t,e){r=r.updateImmediateChild(t,e)}),r;if(e){var i=this.visibleWrites_.childCompoundWrite(t);return e.forEachChild(Se,function(t,e){var n=i.childCompoundWrite(new Tt(t)).apply(e);r=r.updateImmediateChild(t,n)}),i.getCompleteChildren().forEach(function(t){r=r.updateImmediateChild(t.name,t.node)}),r}return this.visibleWrites_.childCompoundWrite(t).getCompleteChildren().forEach(function(t){r=r.updateImmediateChild(t.name,t.node)}),r},lr.prototype.calcEventCacheAfterServerOverwrite=function(t,e,n,r){C(n||r,"Either existingEventSnap or existingServerSnap must exist");var i=t.child(e);if(this.visibleWrites_.hasCompleteWrite(i))return null;var o=this.visibleWrites_.childCompoundWrite(i);return o.isEmpty()?r.getChild(e):o.apply(r.getChild(e))},lr.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},lr.prototype.shadowingWrite=function(t){return this.visibleWrites_.getCompleteNode(t)},lr.prototype.calcIndexedSlice=function(t,e,n,r,i,o){var s,a=this.visibleWrites_.childCompoundWrite(t),h=a.getCompleteNode(Tt.Empty);if(null!=h)s=h;else{if(null==e)return[];s=a.apply(e)}if((s=s.withIndex(o)).isEmpty()||s.isLeafNode())return[];for(var l=[],u=o.getCompare(),c=i?s.getReverseIteratorFrom(n,o):s.getIteratorFrom(n,o),p=c.getNext();p&&l.length<r;)0!==u(p,n)&&l.push(p),p=c.getNext();return l},lr.prototype.recordContainsPath_=function(t,e){if(t.snap)return t.path.contains(e);for(var n in t.children)if(t.children.hasOwnProperty(n)&&t.path.child(n).contains(e))return!0;return!1},lr.prototype.resetTree_=function(){this.visibleWrites_=lr.layerTree_(this.allWrites_,lr.DefaultFilter_,Tt.Empty),0<this.allWrites_.length?this.lastWriteId_=this.allWrites_[this.allWrites_.length-1].writeId:this.lastWriteId_=-1},lr.DefaultFilter_=function(t){return t.visible},lr.layerTree_=function(t,e,n){for(var r=sr.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=Tt.relativePath(n,s),r=r.addWrite(a,o.snap)):s.contains(n)&&(a=Tt.relativePath(s,n),r=r.addWrite(Tt.Empty,o.snap.getChild(a)));else{if(!o.children)throw c("WriteRecord should have .snap or .children");if(n.contains(s))a=Tt.relativePath(n,s),r=r.addWrites(a,o.children);else if(s.contains(n))if((a=Tt.relativePath(s,n)).isEmpty())r=r.addWrites(Tt.Empty,o.children);else{var h=R(o.children,a.getFront());if(h){var l=h.getChild(a.popFront());r=r.addWrite(Tt.Empty,l)}}}}}return r},lr);function lr(){this.visibleWrites_=sr.Empty,this.allWrites_=[],this.lastWriteId_=-1}var ur=(cr.prototype.calcCompleteEventCache=function(t,e,n){return this.writeTree_.calcCompleteEventCache(this.treePath_,t,e,n)},cr.prototype.calcCompleteEventChildren=function(t){return this.writeTree_.calcCompleteEventChildren(this.treePath_,t)},cr.prototype.calcEventCacheAfterServerOverwrite=function(t,e,n){return this.writeTree_.calcEventCacheAfterServerOverwrite(this.treePath_,t,e,n)},cr.prototype.shadowingWrite=function(t){return this.writeTree_.shadowingWrite(this.treePath_.child(t))},cr.prototype.calcIndexedSlice=function(t,e,n,r,i){return this.writeTree_.calcIndexedSlice(this.treePath_,t,e,n,r,i)},cr.prototype.calcCompleteChild=function(t,e){return this.writeTree_.calcCompleteChild(this.treePath_,t,e)},cr.prototype.child=function(t){return new cr(this.treePath_.child(t),this.writeTree_)},cr);function cr(t,e){this.treePath_=t,this.writeTree_=e}var pr=(dr.prototype.applyUserOverwrite=function(t,e,n,r){return this.pendingWriteTree_.addOverwrite(t,e,n,r),r?this.applyOperationToSyncPoints_(new xn(bn.User,t,e)):[]},dr.prototype.applyUserMerge=function(t,e,n){this.pendingWriteTree_.addMerge(t,e,n);var r=Rn.fromObject(e);return this.applyOperationToSyncPoints_(new Fn(bn.User,t,r))},dr.prototype.ackUserWrite=function(t,e){void 0===e&&(e=!1);var n=this.pendingWriteTree_.getWrite(t);if(this.pendingWriteTree_.removeWrite(t)){var r=Rn.Empty;return null!=n.snap?r=r.set(Tt.Empty,!0):mt(n.children,function(t,e){r=r.set(new Tt(t),e)}),this.applyOperationToSyncPoints_(new In(n.path,r,e))}return[]},dr.prototype.applyServerOverwrite=function(t,e){return this.applyOperationToSyncPoints_(new xn(bn.Server,t,e))},dr.prototype.applyServerMerge=function(t,e){var n=Rn.fromObject(e);return this.applyOperationToSyncPoints_(new Fn(bn.Server,t,n))},dr.prototype.applyListenComplete=function(t){return this.applyOperationToSyncPoints_(new Dn(bn.Server,t))},dr.prototype.applyTaggedQueryOverwrite=function(t,e,n){var r=this.queryKeyForTag_(n);if(null==r)return[];var i=dr.parseQueryKey_(r),o=i.path,s=i.queryId,a=Tt.relativePath(o,t),h=new xn(bn.forServerTaggedQuery(s),a,e);return this.applyTaggedOperation_(o,h)},dr.prototype.applyTaggedQueryMerge=function(t,e,n){var r=this.queryKeyForTag_(n);if(r){var i=dr.parseQueryKey_(r),o=i.path,s=i.queryId,a=Tt.relativePath(o,t),h=Rn.fromObject(e),l=new Fn(bn.forServerTaggedQuery(s),a,h);return this.applyTaggedOperation_(o,l)}return[]},dr.prototype.applyTaggedListenComplete=function(t,e){var n=this.queryKeyForTag_(e);if(n){var r=dr.parseQueryKey_(n),i=r.path,o=r.queryId,s=Tt.relativePath(i,t),a=new Dn(bn.forServerTaggedQuery(o),s);return this.applyTaggedOperation_(i,a)}return[]},dr.prototype.addEventRegistration=function(t,e){var r=t.path,i=null,o=!1;this.syncPointTree_.foreachOnPath(r,function(t,e){var n=Tt.relativePath(t,r);i=i||e.getCompleteServerCache(n),o=o||e.hasCompleteView()});var n,s=this.syncPointTree_.get(r);s?(o=o||s.hasCompleteView(),i=i||s.getCompleteServerCache(Tt.Empty)):(s=new ir,this.syncPointTree_=this.syncPointTree_.set(r,s)),null!=i?n=!0:(n=!1,i=je.EMPTY_NODE,this.syncPointTree_.subtree(r).foreachChild(function(t,e){var n=e.getCompleteServerCache(Tt.Empty);n&&(i=i.updateImmediateChild(t,n))}));var a=s.viewExistsForQuery(t);if(!a&&!t.getQueryParams().loadsAllData()){var h=dr.makeQueryKey_(t);C(!this.queryToTagMap.has(h),"View does not exist, but we have a tag");var l=dr.getNextQueryTag_();this.queryToTagMap.set(h,l),this.tagToQueryMap.set(l,h)}var u=this.pendingWriteTree_.childWrites(r),c=s.addEventRegistration(t,e,u,i,n);if(!a&&!o){var p=s.viewForQuery(t);c=c.concat(this.setupListener_(t,p))}return c},dr.prototype.removeEventRegistration=function(t,e,n){var r=this,i=t.path,o=this.syncPointTree_.get(i),s=[];if(o&&("default"===t.queryIdentifier()||o.viewExistsForQuery(t))){var a=o.removeEventRegistration(t,e,n);o.isEmpty()&&(this.syncPointTree_=this.syncPointTree_.remove(i));var h=a.removed;s=a.events;var l=-1!==h.findIndex(function(t){return t.getQueryParams().loadsAllData()}),u=this.syncPointTree_.findOnPath(i,function(t,e){return e.hasCompleteView()});if(l&&!u){var c=this.syncPointTree_.subtree(i);if(!c.isEmpty())for(var p=this.collectDistinctViewsForSubTree_(c),d=0;d<p.length;++d){var f=p[d],_=f.getQuery(),y=this.createListenerForView_(f);this.listenProvider_.startListening(dr.queryForListening_(_),this.tagForQuery_(_),y.hashFn,y.onComplete)}}!u&&0<h.length&&!n&&(l?this.listenProvider_.stopListening(dr.queryForListening_(t),null):h.forEach(function(t){var e=r.queryToTagMap.get(dr.makeQueryKey_(t));r.listenProvider_.stopListening(dr.queryForListening_(t),e)})),this.removeTags_(h)}return s},dr.prototype.calcCompleteEventCache=function(i,t){var e=this.pendingWriteTree_,n=this.syncPointTree_.findOnPath(i,function(t,e){var n=Tt.relativePath(t,i),r=e.getCompleteServerCache(n);if(r)return r});return e.calcCompleteEventCache(i,n,t,!0)},dr.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()),mt(n,function(t,e){r=r.concat(e)}),r})},dr.prototype.removeTags_=function(t){for(var e=0;e<t.length;++e){var n=t[e];if(!n.getQueryParams().loadsAllData()){var r=dr.makeQueryKey_(n),i=this.queryToTagMap.get(r);this.queryToTagMap.delete(r),this.tagToQueryMap.delete(i)}}},dr.queryForListening_=function(t){return t.getQueryParams().loadsAllData()&&!t.getQueryParams().isDefault()?t.getRef():t},dr.prototype.setupListener_=function(t,e){var n=t.path,r=this.tagForQuery_(t),i=this.createListenerForView_(e),o=this.listenProvider_.startListening(dr.queryForListening_(t),r,i.hashFn,i.onComplete),s=this.syncPointTree_.subtree(n);if(r)C(!s.value.hasCompleteView(),"If we're adding a query, it shouldn't be shadowed");else for(var a=s.fold(function(t,e,n){if(!t.isEmpty()&&e&&e.hasCompleteView())return[e.getCompleteView().getQuery()];var r=[];return e&&(r=r.concat(e.getQueryViews().map(function(t){return t.getQuery()}))),mt(n,function(t,e){r=r.concat(e)}),r}),h=0;h<a.length;++h){var l=a[h];this.listenProvider_.stopListening(dr.queryForListening_(l),this.tagForQuery_(l))}return o},dr.prototype.createListenerForView_=function(t){var n=this,r=t.getQuery(),i=this.tagForQuery_(r);return{hashFn:function(){return(t.getServerCache()||je.EMPTY_NODE).hash()},onComplete:function(t){if("ok"===t)return i?n.applyTaggedListenComplete(r.path,i):n.applyListenComplete(r.path);var e=function(t,e){var n="Unknown Error";"too_big"===t?n="The data requested exceeds the maximum size that can be accessed with a single request.":"permission_denied"==t?n="Client doesn't have permission to access the desired data.":"unavailable"==t&&(n="The service is unavailable");var r=new Error(t+" at "+e.path.toString()+": "+n);return r.code=t.toUpperCase(),r}(t,r);return n.removeEventRegistration(r,null,e)}}},dr.makeQueryKey_=function(t){return t.path.toString()+"$"+t.queryIdentifier()},dr.parseQueryKey_=function(t){var e=t.indexOf("$");return C(-1!==e&&e<t.length-1,"Bad queryKey."),{queryId:t.substr(e+1),path:new Tt(t.substr(0,e))}},dr.prototype.queryKeyForTag_=function(t){return this.tagToQueryMap.get(t)},dr.prototype.tagForQuery_=function(t){var e=dr.makeQueryKey_(t);return this.queryToTagMap.get(e)},dr.getNextQueryTag_=function(){return dr.nextQueryTag_++},dr.prototype.applyTaggedOperation_=function(t,e){var n=this.syncPointTree_.get(t);C(n,"Missing sync point for query tag that we're tracking");var r=this.pendingWriteTree_.childWrites(t);return n.applyOperation(e,r,null)},dr.prototype.applyOperationToSyncPoints_=function(t){return this.applyOperationHelper_(t,this.syncPointTree_,null,this.pendingWriteTree_.childWrites(Tt.Empty))},dr.prototype.applyOperationHelper_=function(t,e,n,r){if(t.path.isEmpty())return this.applyOperationDescendantsHelper_(t,e,n,r);var i=e.get(Tt.Empty);null==n&&null!=i&&(n=i.getCompleteServerCache(Tt.Empty));var o=[],s=t.path.getFront(),a=t.operationForChild(s),h=e.children.get(s);if(h&&a){var l=n?n.getImmediateChild(s):null,u=r.child(s);o=o.concat(this.applyOperationHelper_(a,h,l,u))}return i&&(o=o.concat(i.applyOperation(t,r,n))),o},dr.prototype.applyOperationDescendantsHelper_=function(o,t,s,a){var h=this,e=t.get(Tt.Empty);null==s&&null!=e&&(s=e.getCompleteServerCache(Tt.Empty));var l=[];return t.children.inorderTraversal(function(t,e){var n=s?s.getImmediateChild(t):null,r=a.child(t),i=o.operationForChild(t);i&&(l=l.concat(h.applyOperationDescendantsHelper_(i,e,n,r)))}),e&&(l=l.concat(e.applyOperation(o,a,s))),l},dr.nextQueryTag_=1,dr);function dr(t){this.listenProvider_=t,this.syncPointTree_=Rn.Empty,this.pendingWriteTree_=new hr,this.tagToQueryMap=new Map,this.queryToTagMap=new Map}var fr=(_r.prototype.getNode=function(t){return this.rootNode_.getChild(t)},_r.prototype.updateSnapshot=function(t,e){this.rootNode_=this.rootNode_.updateChild(t,e)},_r);function _r(){this.rootNode_=je.EMPTY_NODE}var yr=(vr.prototype.getToken=function(t){return this.app_.INTERNAL.getToken(t).then(null,function(t){return t&&"auth/token-not-initialized"===t.code?($("Got auth/token-not-initialized error.  Treating as null token."),null):Promise.reject(t)})},vr.prototype.addTokenChangeListener=function(t){this.app_.INTERNAL.addAuthTokenListener(t)},vr.prototype.removeTokenChangeListener=function(t){this.app_.INTERNAL.removeAuthTokenListener(t)},vr.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/.',et(t)},vr);function vr(t){this.app_=t}var gr=function(t){this.accessToken=t},mr=(Cr.prototype.getToken=function(t){return Promise.resolve(new gr("owner"))},Cr.prototype.addTokenChangeListener=function(t){},Cr.prototype.removeTokenChangeListener=function(t){},Cr.prototype.notifyForInvalidToken=function(){et('Database emulator unexpectedly rejected fake "owner" credentials.')},Cr);function Cr(t){this.app_=t}var Er=(wr.prototype.incrementCounter=function(t,e){void 0===e&&(e=1),N(this.counters_,t)||(this.counters_[t]=0),this.counters_[t]+=e},wr.prototype.get=function(){return n(this.counters_)},wr);function wr(){this.counters_={}}var br=(Sr.getCollection=function(t){var e=t.toString();return this.collections_[e]||(this.collections_[e]=new Er),this.collections_[e]},Sr.getOrCreateReporter=function(t,e){var n=t.toString();return this.reporters_[n]||(this.reporters_[n]=e()),this.reporters_[n]},Sr.collections_={},Sr.reporters_={},Sr);function Sr(){}var Tr=(Ir.prototype.get=function(){var t=this.collection_.get(),n=u({},t);return this.last_&&mt(this.last_,function(t,e){n[t]=n[t]-e}),this.last_=t,n},Ir);function Ir(t){this.collection_=t,this.last_=null}var Nr=(Rr.prototype.includeStat=function(t){this.statsToReport_[t]=!0},Rr.prototype.reportStats_=function(){var n=this,t=this.statsListener_.get(),r={},i=!1;mt(t,function(t,e){0<e&&N(n.statsToReport_,t)&&(r[t]=e,i=!0)}),i&&this.server_.reportStats(r),wt(this.reportStats_.bind(this),Math.floor(2*Math.random()*3e5))},Rr);function Rr(t,e){this.server_=e,this.statsToReport_={},this.statsListener_=new Tr(t);var n=1e4+2e4*Math.random();wt(this.reportStats_.bind(this),Math.floor(n))}var Pr=(Dr.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 Or(i)),e.add(r)}e&&this.eventLists_.push(e)},Dr.prototype.raiseEventsAtPath=function(e,t){this.queueEvents(t),this.raiseQueuedEventsMatchingPredicate_(function(t){return t.equals(e)})},Dr.prototype.raiseEventsForChangedPath=function(e,t){this.queueEvents(t),this.raiseQueuedEventsMatchingPredicate_(function(t){return t.contains(e)||e.contains(t)})},Dr.prototype.raiseQueuedEventsMatchingPredicate_=function(t){this.recursionDepth_++;for(var e=!0,n=0;n<this.eventLists_.length;n++){var r=this.eventLists_[n];r&&(t(r.getPath())?(this.eventLists_[n].raise(),this.eventLists_[n]=null):e=!1)}e&&(this.eventLists_=[]),this.recursionDepth_--},Dr);function Dr(){this.eventLists_=[],this.recursionDepth_=0}var Or=(xr.prototype.add=function(t){this.events_.push(t)},xr.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();dt&&$("event: "+e.toString()),Et(n)}}},xr.prototype.getPath=function(){return this.path_},xr);function xr(t){this.path_=t,this.events_=[]}var kr=(Fr.prototype.trigger=function(t){for(var e=[],n=1;n<arguments.length;n++)e[n-1]=arguments[n];if(Array.isArray(this.listeners_[t]))for(var r=o(this.listeners_[t]),i=0;i<r.length;i++)r[i].callback.apply(r[i].context,e)},Fr.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)},Fr.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)},Fr.prototype.validateEventType_=function(e){C(this.allowedEvents_.find(function(t){return t===e}),"Unknown event: "+e)},Fr);function Fr(t){this.allowedEvents_=t,this.listeners_={},C(Array.isArray(t)&&0<t.length,"Requires a non-empty array")}var Ar,Lr=(t(Mr,Ar=kr),Mr.getInstance=function(){return new Mr},Mr.prototype.getInitialEvent=function(t){return C("visible"===t,"Unknown event type: "+t),[this.visible_]},Mr);function Mr(){var e,t,n=Ar.call(this,["visible"])||this;return"undefined"!=typeof document&&void 0!==document.addEventListener&&(void 0!==document.hidden?(t="visibilitychange",e="hidden"):void 0!==document.mozHidden?(t="mozvisibilitychange",e="mozHidden"):void 0!==document.msHidden?(t="msvisibilitychange",e="msHidden"):void 0!==document.webkitHidden&&(t="webkitvisibilitychange",e="webkitHidden")),n.visible_=!0,t&&document.addEventListener(t,function(){var t=!document[e];t!==n.visible_&&(n.visible_=t,n.trigger("visible",t))},!1),n}var Wr,Qr=(t(qr,Wr=kr),qr.getInstance=function(){return new qr},qr.prototype.getInitialEvent=function(t){return C("online"===t,"Unknown event type: "+t),[this.online_]},qr.prototype.currentlyOnline=function(){return this.online_},qr);function qr(){var t=Wr.call(this,["online"])||this;return t.online_=!0,"undefined"==typeof window||void 0===window.addEventListener||d()||(window.addEventListener("online",function(){t.online_||(t.online_=!0,t.trigger("online",!0))},!1),window.addEventListener("offline",function(){t.online_&&(t.online_=!1,t.trigger("online",!1))},!1)),t}var Ur=(Vr.prototype.closeAfter=function(t,e){this.closeAfterResponse=t,this.onClose=e,this.closeAfterResponse<this.currentResponseNum&&(this.onClose(),this.onClose=null)},Vr.prototype.handleResponse=function(t,e){var r=this;this.pendingResponses[t]=e;for(var n=function(){var e=i.pendingResponses[i.currentResponseNum];delete i.pendingResponses[i.currentResponseNum];for(var t=function(t){e[t]&&Et(function(){r.onMessage_(e[t])})},n=0;n<e.length;++n)t(n);if(i.currentResponseNum===i.closeAfterResponse)return i.onClose&&(i.onClose(),i.onClose=null),"break";i.currentResponseNum++},i=this;this.pendingResponses[this.currentResponseNum]&&"break"!==n(););},Vr);function Vr(t){this.onMessage_=t,this.pendingResponses=[],this.currentResponseNum=0,this.closeAfterResponse=-1,this.onClose=null}var Hr=(Br.prototype.open=function(t,e){var s=this;this.curSegmentNum=0,this.onDisconnect_=e,this.myPacketOrderer=new Ur(t),this.isClosed_=!1,this.connectTimeoutTimer_=setTimeout(function(){s.log_("Timed out trying to connect."),s.onClosed_(),s.connectTimeoutTimer_=null},Math.floor(3e4)),function(t){if("complete"===document.readyState)t();else{var e=!1,n=function(){document.body?e||(e=!0,t()):setTimeout(n,Math.floor(10))};document.addEventListener?(document.addEventListener("DOMContentLoaded",n,!1),window.addEventListener("load",n,!1)):document.attachEvent&&(document.attachEvent("onreadystatechange",function(){"complete"===document.readyState&&n()}),window.attachEvent("onload",n))}}(function(){if(!s.isClosed_){s.scriptTagHolder=new jr(function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];var n=_(t,5),r=n[0],i=n[1],o=n[2];if(n[3],n[4],s.incrementIncomingBytes_(t),s.scriptTagHolder)if(s.connectTimeoutTimer_&&(clearTimeout(s.connectTimeoutTimer_),s.connectTimeoutTimer_=null),s.everConnected_=!0,"start"==r)s.id=i,s.password=o;else{if("close"!==r)throw new Error("Unrecognized command received: "+r);i?(s.scriptTagHolder.sendNewPolls=!1,s.myPacketOrderer.closeAfter(i,function(){s.onClosed_()})):s.onClosed_()}},function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];var n=_(t,2),r=n[0],i=n[1];s.incrementIncomingBytes_(t),s.myPacketOrderer.handleResponse(r,i)},function(){s.onClosed_()},s.urlFn);var t={start:"t"};t.ser=Math.floor(1e8*Math.random()),s.scriptTagHolder.uniqueCallbackIdentifier&&(t.cb=s.scriptTagHolder.uniqueCallbackIdentifier),t.v="5",s.transportSessionId&&(t.s=s.transportSessionId),s.lastSessionId&&(t.ls=s.lastSessionId),"undefined"!=typeof location&&location.href&&-1!==location.href.indexOf(Pt)&&(t.r="f");var e=s.urlFn(t);s.log_("Connecting via long-poll to "+e),s.scriptTagHolder.addTag(e,function(){})}})},Br.prototype.start=function(){this.scriptTagHolder.startLongPoll(this.id,this.password),this.addDisconnectPingFrame(this.id,this.password)},Br.forceAllow=function(){Br.forceAllow_=!0},Br.forceDisallow=function(){Br.forceDisallow_=!0},Br.isAvailable=function(){return Br.forceAllow_||!Br.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)&&!y()},Br.prototype.markConnectionHealthy=function(){},Br.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)},Br.prototype.onClosed_=function(){this.isClosed_||(this.log_("Longpoll is closing itself"),this.shutdown_(),this.onDisconnect_&&(this.onDisconnect_(this.everConnected_),this.onDisconnect_=null))},Br.prototype.close=function(){this.isClosed_||(this.log_("Longpoll is being closed."),this.shutdown_())},Br.prototype.send=function(t){var e=T(t);this.bytesSent+=e.length,this.stats_.incrementCounter("bytes_sent",e.length);for(var n=function(t){var e=s(t);return l.encodeByteArray(e,!0)}(e),r=ot(n,1840),i=0;i<r.length;i++)this.scriptTagHolder.enqueueSegment(this.curSegmentNum,r.length,r[i]),this.curSegmentNum++},Br.prototype.addDisconnectPingFrame=function(t,e){this.myDisconnFrame=document.createElement("iframe");var n={dframe:"t"};n.id=t,n.pw=e,this.myDisconnFrame.src=this.urlFn(n),this.myDisconnFrame.style.display="none",document.body.appendChild(this.myDisconnFrame)},Br.prototype.incrementIncomingBytes_=function(t){var e=T(t).length;this.bytesReceived+=e,this.stats_.incrementCounter("bytes_received",e)},Br);function Br(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_=J(t),this.stats_=br.getCollection(e),this.urlFn=function(t){return e.connectionURL(Ot,t)}}var jr=(Kr.createIFrame_=function(){var e=document.createElement("iframe");if(e.style.display="none",!document.body)throw"Document body has not initialized. Wait to initialize Firebase until after the document is ready.";document.body.appendChild(e);try{e.contentWindow.document||$("No IE domain setting required")}catch(t){var n=document.domain;e.src="javascript:void((function(){document.open();document.domain='"+n+"';document.close();})())"}return e.contentDocument?e.doc=e.contentDocument:e.contentWindow?e.doc=e.contentWindow.document:e.document&&(e.doc=e.document),e},Kr.prototype.close=function(){var t=this;this.alive=!1,this.myIFrame&&(this.myIFrame.doc.body.innerHTML="",setTimeout(function(){null!==t.myIFrame&&(document.body.removeChild(t.myIFrame),t.myIFrame=null)},Math.floor(0)));var e=this.onDisconnect;e&&(this.onDisconnect=null,e())},Kr.prototype.startLongPoll=function(t,e){for(this.myID=t,this.myPW=e,this.alive=!0;this.newRequest_(););},Kr.prototype.newRequest_=function(){if(this.alive&&this.sendNewPolls&&this.outstandingRequests.size<(0<this.pendingSegs.length?2:1)){this.currentSerial++;var t={};t.id=this.myID,t.pw=this.myPW,t.ser=this.currentSerial;for(var e=this.urlFn(t),n="",r=0;0<this.pendingSegs.length&&this.pendingSegs[0].d.length+30+n.length<=1870;){var i=this.pendingSegs.shift();n=n+"&seg"+r+"="+i.seg+"&ts"+r+"="+i.ts+"&d"+r+"="+i.d,r++}return e+=n,this.addLongPollTag_(e,this.currentSerial),!0}return!1},Kr.prototype.enqueueSegment=function(t,e,n){this.pendingSegs.push({seg:t,ts:e,d:n}),this.alive&&this.newRequest_()},Kr.prototype.addLongPollTag_=function(t,e){var n=this;function r(){n.outstandingRequests.delete(e),n.newRequest_()}this.outstandingRequests.add(e);var i=setTimeout(r,Math.floor(25e3));this.addTag(t,function(){clearTimeout(i),r()})},Kr.prototype.addTag=function(t,n){var r=this;setTimeout(function(){try{if(!r.sendNewPolls)return;var e=r.myIFrame.doc.createElement("script");e.type="text/javascript",e.async=!0,e.src=t,e.onload=e.onreadystatechange=function(){var t=e.readyState;t&&"loaded"!==t&&"complete"!==t||(e.onload=e.onreadystatechange=null,e.parentNode&&e.parentNode.removeChild(e),n())},e.onerror=function(){$("Long-poll script failed to load: "+t),r.sendNewPolls=!1,r.close()},r.myIFrame.doc.body.appendChild(e)}catch(t){}},Math.floor(1))},Kr);function Kr(t,e,n,r){this.onDisconnect=n,this.urlFn=r,this.outstandingRequests=new Set,this.pendingSegs=[],this.currentSerial=Math.floor(1e8*Math.random()),this.sendNewPolls=!0,this.uniqueCallbackIdentifier=ct(),window["pLPCommand"+this.uniqueCallbackIdentifier]=t,window["pRTLPCB"+this.uniqueCallbackIdentifier]=e,this.myIFrame=Kr.createIFrame_();var i="";this.myIFrame.src&&"javascript:"===this.myIFrame.src.substr(0,"javascript:".length)&&(i='<script>document.domain="'+document.domain+'";<\/script>');var o="<html><body>"+i+"</body></html>";try{this.myIFrame.doc.open(),this.myIFrame.doc.write(o),this.myIFrame.doc.close()}catch(t){$("frame writing exception"),t.stack&&$(t.stack),$(t)}}var Yr="";var zr=null;"undefined"!=typeof MozWebSocket?zr=MozWebSocket:"undefined"!=typeof WebSocket&&(zr=WebSocket);var Gr=(Xr.connectionURL_=function(t,e,n){var r={v:"5"};return"undefined"!=typeof location&&location.href&&-1!==location.href.indexOf(Pt)&&(r.r="f"),e&&(r.s=e),n&&(r.ls=n),t.connectionURL(Dt,r)},Xr.prototype.open=function(t,e){var n=this;this.onDisconnect=e,this.onMessage=t,this.log_("Websocket connecting to "+this.connURL),this.everConnected_=!1,at.set("previous_websocket_failure",!0);try{if(y()){var r=h.NODE_ADMIN?"AdminNode":"Node",i={headers:{"User-Agent":"Firebase/5/"+Yr+"/"+process.platform+"/"+r}},o=process.env,s=0==this.connURL.indexOf("wss://")?o.HTTPS_PROXY||o.https_proxy:o.HTTP_PROXY||o.http_proxy;s&&(i.proxy={origin:s}),this.mySock=new zr(this.connURL,[],i)}else this.mySock=new zr(this.connURL)}catch(t){this.log_("Error instantiating WebSocket.");var a=t.message||t.data;return a&&this.log_(a),void this.onClosed_()}this.mySock.onopen=function(){n.log_("Websocket connected."),n.everConnected_=!0},this.mySock.onclose=function(){n.log_("Websocket connection was disconnected."),n.mySock=null,n.onClosed_()},this.mySock.onmessage=function(t){n.handleIncomingFrame(t)},this.mySock.onerror=function(t){n.log_("WebSocket error.  Closing connection.");var e=t.message||t.data;e&&n.log_(e),n.onClosed_()}},Xr.prototype.start=function(){},Xr.forceDisallow=function(){Xr.forceDisallow_=!0},Xr.isAvailable=function(){var t=!1;if("undefined"!=typeof navigator&&navigator.userAgent){var e=navigator.userAgent.match(/Android ([0-9]{0,}\.[0-9]{0,})/);e&&1<e.length&&parseFloat(e[1])<4.4&&(t=!0)}return!t&&null!==zr&&!Xr.forceDisallow_},Xr.previouslyFailed=function(){return at.isInMemoryStorage||!0===at.get("previous_websocket_failure")},Xr.prototype.markConnectionHealthy=function(){at.remove("previous_websocket_failure")},Xr.prototype.appendFrame_=function(t){if(this.frames.push(t),this.frames.length==this.totalFrames){var e=this.frames.join("");this.frames=null;var n=S(e);this.onMessage(n)}},Xr.prototype.handleNewFrameCount_=function(t){this.totalFrames=t,this.frames=[]},Xr.prototype.extractFrameCount_=function(t){if(C(null===this.frames,"We already have a frame buffer"),t.length<=6){var e=Number(t);if(!isNaN(e))return this.handleNewFrameCount_(e),null}return this.handleNewFrameCount_(1),t},Xr.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)}}},Xr.prototype.send=function(t){this.resetKeepAlive();var e=T(t);this.bytesSent+=e.length,this.stats_.incrementCounter("bytes_sent",e.length);var n=ot(e,16384);1<n.length&&this.sendString_(String(n.length));for(var r=0;r<n.length;r++)this.sendString_(n[r])},Xr.prototype.shutdown_=function(){this.isClosed_=!0,this.keepaliveTimer&&(clearInterval(this.keepaliveTimer),this.keepaliveTimer=null),this.mySock&&(this.mySock.close(),this.mySock=null)},Xr.prototype.onClosed_=function(){this.isClosed_||(this.log_("WebSocket is closing itself"),this.shutdown_(),this.onDisconnect&&(this.onDisconnect(this.everConnected_),this.onDisconnect=null))},Xr.prototype.close=function(){this.isClosed_||(this.log_("WebSocket is being closed"),this.shutdown_())},Xr.prototype.resetKeepAlive=function(){var t=this;clearInterval(this.keepaliveTimer),this.keepaliveTimer=setInterval(function(){t.mySock&&t.sendString_("0"),t.resetKeepAlive()},Math.floor(45e3))},Xr.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)}},Xr.responsesRequiredToBeHealthy=2,Xr.healthyTimeout=3e4,Xr);function Xr(t,e,n,r){this.connId=t,this.keepaliveTimer=null,this.frames=null,this.totalFrames=0,this.bytesSent=0,this.bytesReceived=0,this.log_=J(this.connId),this.stats_=br.getCollection(e),this.connURL=Xr.connectionURL_(e,n,r)}var $r=(Object.defineProperty(Jr,"ALL_TRANSPORTS",{get:function(){return[Hr,Gr]},enumerable:!0,configurable:!0}),Jr.prototype.initTransports_=function(t){var e,n,r=Gr&&Gr.isAvailable(),i=r&&!Gr.previouslyFailed();if(t.webSocketOnly&&(r||et("wss:// URL used, but browser isn't known to support websockets.  Trying anyway."),i=!0),i)this.transports_=[Gr];else{var o=this.transports_=[];try{for(var s=f(Jr.ALL_TRANSPORTS),a=s.next();!a.done;a=s.next()){var h=a.value;h&&h.isAvailable()&&o.push(h)}}catch(t){e={error:t}}finally{try{a&&!a.done&&(n=s.return)&&n.call(s)}finally{if(e)throw e.error}}}},Jr.prototype.initialTransport=function(){if(0<this.transports_.length)return this.transports_[0];throw new Error("No transports available")},Jr.prototype.upgradeTransport=function(){return 1<this.transports_.length?this.transports_[1]:null},Jr);function Jr(t){this.initTransports_(t)}var Zr=(ti.prototype.start_=function(){var t=this,e=this.transportManager_.initialTransport();this.conn_=new e(this.nextTransportId_(),this.repoInfo_,void 0,this.lastSessionId),this.primaryResponsesRequired_=e.responsesRequiredToBeHealthy||0;var n=this.connReceiver_(this.conn_),r=this.disconnReceiver_(this.conn_);this.tx_=this.conn_,this.rx_=this.conn_,this.secondaryConn_=null,this.isHealthy_=!1,setTimeout(function(){t.conn_&&t.conn_.open(n,r)},Math.floor(0));var i=e.healthyTimeout||0;0<i&&(this.healthyTimeout_=wt(function(){t.healthyTimeout_=null,t.isHealthy_||(t.conn_&&102400<t.conn_.bytesReceived?(t.log_("Connection exceeded healthy timeout but has received "+t.conn_.bytesReceived+" bytes.  Marking connection healthy."),t.isHealthy_=!0,t.conn_.markConnectionHealthy()):t.conn_&&10240<t.conn_.bytesSent?t.log_("Connection exceeded healthy timeout but has sent "+t.conn_.bytesSent+" bytes.  Leaving connection alive."):(t.log_("Closing unhealthy connection after timeout."),t.close()))},Math.floor(i)))},ti.prototype.nextTransportId_=function(){return"c:"+this.id+":"+this.connectionCount++},ti.prototype.disconnReceiver_=function(e){var n=this;return function(t){e===n.conn_?n.onConnectionLost_(t):e===n.secondaryConn_?(n.log_("Secondary connection lost."),n.onSecondaryConnectionLost_()):n.log_("closing an old connection")}},ti.prototype.connReceiver_=function(e){var n=this;return function(t){2!=n.state_&&(e===n.rx_?n.onPrimaryMessageReceived_(t):e===n.secondaryConn_?n.onSecondaryMessageReceived_(t):n.log_("message on old connection"))}},ti.prototype.sendRequest=function(t){var e={t:"d",d:t};this.sendData_(e)},ti.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)},ti.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_())}},ti.prototype.onSecondaryMessageReceived_=function(t){var e=it("t",t),n=it("d",t);if("c"==e)this.onSecondaryControl_(n);else{if("d"!=e)throw new Error("Unknown protocol layer: "+e);this.pendingDataMessages.push(n)}},ti.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:{}}}))},ti.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()},ti.prototype.onPrimaryMessageReceived_=function(t){var e=it("t",t),n=it("d",t);"c"==e?this.onControl_(n):"d"==e&&this.onDataMessage_(n)},ti.prototype.onDataMessage_=function(t){this.onPrimaryResponse_(),this.onMessage_(t)},ti.prototype.onPrimaryResponse_=function(){this.isHealthy_||(this.primaryResponsesRequired_--,this.primaryResponsesRequired_<=0&&(this.log_("Primary connection is healthy."),this.isHealthy_=!0,this.conn_.markConnectionHealthy()))},ti.prototype.onControl_=function(t){var e=it("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?Z("Server Error: "+n):"o"===e?(this.log_("got pong on primary."),this.onPrimaryResponse_(),this.sendPingOnPrimaryIfNecessary_()):Z("Unknown control packet command: "+e)}},ti.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&&et("Protocol version mismatch detected"),this.tryStartUpgrade_())},ti.prototype.tryStartUpgrade_=function(){var t=this.transportManager_.upgradeTransport();t&&this.startUpgrade_(t)},ti.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),wt(function(){e.secondaryConn_&&(e.log_("Timed out trying to upgrade."),e.secondaryConn_.close())},Math.floor(6e4))},ti.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_())},ti.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):wt(function(){n.sendPingOnPrimaryIfNecessary_()},Math.floor(5e3))},ti.prototype.sendPingOnPrimaryIfNecessary_=function(){this.isHealthy_||1!==this.state_||(this.log_("sending ping on primary."),this.sendData_({t:"c",d:{t:"p",d:{}}}))},ti.prototype.onSecondaryConnectionLost_=function(){var t=this.secondaryConn_;this.secondaryConn_=null,this.tx_!==t&&this.rx_!==t||this.close()},ti.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()&&(at.remove("host:"+this.repoInfo_.host),this.repoInfo_.internalHost=this.repoInfo_.host)),this.close()},ti.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()},ti.prototype.sendData_=function(t){if(1!==this.state_)throw"Connection is not connected";this.tx_.send(t)},ti.prototype.close=function(){2!==this.state_&&(this.log_("Closing realtime connection."),this.state_=2,this.closeConnections_(),this.onDisconnect_&&(this.onDisconnect_(),this.onDisconnect_=null))},ti.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)},ti);function ti(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_=J("c:"+this.id+":"),this.transportManager_=new $r(e),this.log_("Connection created"),this.start_()}var ei=(ni.prototype.put=function(t,e,n,r){},ni.prototype.merge=function(t,e,n,r){},ni.prototype.refreshAuthToken=function(t){},ni.prototype.onDisconnectPut=function(t,e,n){},ni.prototype.onDisconnectMerge=function(t,e,n){},ni.prototype.onDisconnectCancel=function(t,e){},ni.prototype.reportStats=function(t){},ni);function ni(){}var ri,ii=(t(oi,ri=ei),oi.prototype.sendRequest=function(t,e,n){var r=++this.requestNumber_,i={r:r,a:t,b:e};this.log_(T(i)),C(this.connected_,"sendRequest call when we're not connected not allowed."),this.realtime_.sendRequest(i),n&&(this.requestCBHash_[r]=n)},oi.prototype.listen=function(t,e,n,r){var i=t.queryIdentifier(),o=t.path.toString();this.log_("Listen called for "+o+" "+i),this.listens.has(o)||this.listens.set(o,new Map),C(t.getQueryParams().isDefault()||!t.getQueryParams().loadsAllData(),"listen() called for non-default but complete query"),C(!this.listens.get(o).has(i),"listen() called twice for same path/queryId.");var s={onComplete:r,hashFn:e,query:t,tag:n};this.listens.get(o).set(i,s),this.connected_&&this.sendListen_(s)},oi.prototype.sendListen_=function(r){var i=this,o=r.query,s=o.path.toString(),a=o.queryIdentifier();this.log_("Listen on "+s+" for "+a);var t={p:s};r.tag&&(t.q=o.queryObject(),t.t=r.tag),t.h=r.hashFn(),this.sendRequest("q",t,function(t){var e=t.d,n=t.s;oi.warnOnListenWarnings_(e,o),(i.listens.get(s)&&i.listens.get(s).get(a))===r&&(i.log_("listen response",t),"ok"!==n&&i.removeListen_(s,a),r.onComplete&&r.onComplete(n,e))})},oi.warnOnListenWarnings_=function(t,e){if(t&&"object"==typeof t&&N(t,"w")){var n=R(t,"w");if(Array.isArray(n)&&~n.indexOf("no_index")){var r='".indexOn": "'+e.getQueryParams().getIndex().toString()+'"',i=e.path.toString();et("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.")}}},oi.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)},oi.prototype.reduceReconnectDelayIfAdminCredential_=function(t){(t&&40===t.length||function(t){var e=I(t).claims;return"object"==typeof e&&!0===e.admin}(t))&&(this.log_("Admin auth credential detected.  Reducing max reconnect time."),this.maxReconnectDelay_=3e4)},oi.prototype.tryAuth=function(){var r=this;if(this.connected_&&this.authToken_){var i=this.authToken_,t=function(t){var e=I(t).claims;return!!e&&"object"==typeof e&&e.hasOwnProperty("iat")}(i)?"auth":"gauth",e={cred:i};null===this.authOverride_?e.noauth=!0:"object"==typeof this.authOverride_&&(e.authvar=this.authOverride_),this.sendRequest(t,e,function(t){var e=t.s,n=t.d||"error";r.authToken_===i&&("ok"===e?r.invalidAuthTokenCount_=0:r.onAuthRevoked_(e,n))})}},oi.prototype.unlisten=function(t,e){var n=t.path.toString(),r=t.queryIdentifier();this.log_("Unlisten called for "+n+" "+r),C(t.getQueryParams().isDefault()||!t.getQueryParams().loadsAllData(),"unlisten() called for non-default but complete query"),this.removeListen_(n,r)&&this.connected_&&this.sendUnlisten_(n,r,t.queryObject(),e)},oi.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)},oi.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})},oi.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})},oi.prototype.onDisconnectCancel=function(t,e){this.connected_?this.sendOnDisconnect_("oc",t,null,e):this.onDisconnectRequestQueue_.push({pathString:t,action:"oc",data:null,onComplete:e})},oi.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))})},oi.prototype.put=function(t,e,n,r){this.putInternal("p",t,e,n,r)},oi.prototype.merge=function(t,e,n,r){this.putInternal("m",t,e,n,r)},oi.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)},oi.prototype.sendPut_=function(e){var n=this,r=this.outstandingPuts_[e].action,t=this.outstandingPuts_[e].request,i=this.outstandingPuts_[e].onComplete;this.outstandingPuts_[e].queued=this.connected_,this.sendRequest(r,t,function(t){n.log_(r+" response",t),delete n.outstandingPuts_[e],n.outstandingPutCount_--,0===n.outstandingPutCount_&&(n.outstandingPuts_=[]),i&&i(t.s,t.d)})},oi.prototype.reportStats=function(t){var n=this;if(this.connected_){var e={c:t};this.log_("reportStats",e),this.sendRequest("s",e,function(t){if("ok"!==t.s){var e=t.d;n.log_("reportStats","Error sending stats: "+e)}})}},oi.prototype.onDataMessage_=function(t){if("r"in t){this.log_("from server: "+T(t));var e=t.r,n=this.requestCBHash_[e];n&&(delete this.requestCBHash_[e],n(t.b))}else{if("error"in t)throw"A server-side error has occurred: "+t.error;"a"in t&&this.onDataPush_(t.a,t.b)}},oi.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):Z("Unrecognized action received from server: "+T(t)+"\nAre you using the latest client?")},oi.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)},oi.prototype.scheduleConnect_=function(t){var e=this;C(!this.realtime_,"Scheduling a connect when we're already connected/ing?"),this.establishConnectionTimer_&&clearTimeout(this.establishConnectionTimer_),this.establishConnectionTimer_=setTimeout(function(){e.establishConnectionTimer_=null,e.establishConnection_()},Math.floor(t))},oi.prototype.onVisible_=function(t){t&&!this.visible_&&this.reconnectDelay_===this.maxReconnectDelay_&&(this.log_("Window became visible.  Reducing delay."),this.reconnectDelay_=1e3,this.realtime_||this.scheduleConnect_(0)),this.visible_=t},oi.prototype.onOnline_=function(t){t?(this.log_("Browser went online."),this.reconnectDelay_=1e3,this.realtime_||this.scheduleConnect_(0)):(this.log_("Browser went offline.  Killing connection."),this.realtime_&&this.realtime_.close())},oi.prototype.onRealtimeDisconnect_=function(){if(this.log_("data client disconnected"),this.connected_=!1,this.realtime_=null,this.cancelSentTransactions_(),this.requestCBHash_={},this.shouldReconnect_()){this.visible_?this.lastConnectionEstablishedTime_&&(3e4<(new Date).getTime()-this.lastConnectionEstablishedTime_&&(this.reconnectDelay_=1e3),this.lastConnectionEstablishedTime_=null):(this.log_("Window isn't visible.  Delaying reconnect."),this.reconnectDelay_=this.maxReconnectDelay_,this.lastConnectionAttemptTime_=(new Date).getTime());var t=(new Date).getTime()-this.lastConnectionAttemptTime_,e=Math.max(0,this.reconnectDelay_-t);e=Math.random()*e,this.log_("Trying to reconnect in "+e+"ms"),this.scheduleConnect_(e),this.reconnectDelay_=Math.min(this.maxReconnectDelay_,1.3*this.reconnectDelay_)}this.onConnectStatus_(!1)},oi.prototype.establishConnection_=function(){if(this.shouldReconnect_()){this.log_("Making a connection attempt"),this.lastConnectionAttemptTime_=(new Date).getTime(),this.lastConnectionEstablishedTime_=null;var e=this.onDataMessage_.bind(this),n=this.onReady_.bind(this),r=this.onRealtimeDisconnect_.bind(this),i=this.id+":"+oi.nextConnectionId_++,o=this,s=this.lastSessionId,a=!1,h=null,l=function(){h?h.close():(a=!0,r())};this.realtime_={close:l,sendRequest:function(t){C(h,"sendRequest call when we're not connected not allowed."),h.sendRequest(t)}};var t=this.forceTokenRefresh_;this.forceTokenRefresh_=!1,this.authTokenProvider_.getToken(t).then(function(t){a?$("getToken() completed but was canceled"):($("getToken() completed. Creating connection."),o.authToken_=t&&t.accessToken,h=new Zr(i,o.repoInfo_,e,n,r,function(t){et(t+" ("+o.repoInfo_.toString()+")"),o.interrupt("server_kill")},s))}).then(null,function(t){o.log_("Failed to get token: "+t),a||l()})}},oi.prototype.interrupt=function(t){$("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_())},oi.prototype.resume=function(t){$("Resuming connection for reason: "+t),delete this.interruptReasons_[t],P(this.interruptReasons_)&&(this.reconnectDelay_=1e3,this.realtime_||this.scheduleConnect_(0))},oi.prototype.handleTimestamp_=function(t){var e=t-(new Date).getTime();this.onServerInfoUpdate_({serverTimeOffset:e})},oi.prototype.cancelSentTransactions_=function(){for(var t=0;t<this.outstandingPuts_.length;t++){var e=this.outstandingPuts_[t];e&&"h"in e.request&&e.queued&&(e.onComplete&&e.onComplete("disconnect"),delete this.outstandingPuts_[t],this.outstandingPutCount_--)}0===this.outstandingPutCount_&&(this.outstandingPuts_=[])},oi.prototype.onListenRevoked_=function(t,e){var n;n=e?e.map(function(t){return gt(t)}).join("$"):"default";var r=this.removeListen_(t,n);r&&r.onComplete&&r.onComplete("permission_denied")},oi.prototype.removeListen_=function(t,e){var n,r=new Tt(t).toString();if(this.listens.has(r)){var i=this.listens.get(r);n=i.get(e),i.delete(e),0===i.size&&this.listens.delete(r)}else n=void 0;return n},oi.prototype.onAuthRevoked_=function(t,e){$("Auth token revoked: "+t+"/"+e),this.authToken_=null,this.forceTokenRefresh_=!0,this.realtime_.close(),"invalid_token"!==t&&"permission_denied"!==t||(this.invalidAuthTokenCount_++,3<=this.invalidAuthTokenCount_&&(this.reconnectDelay_=3e4,this.authTokenProvider_.notifyForInvalidToken()))},oi.prototype.onSecurityDebugPacket_=function(t){this.securityDebugCallback_?this.securityDebugCallback_(t):"msg"in t&&console.log("FIREBASE: "+t.msg.replace("\n","\nFIREBASE: "))},oi.prototype.restoreState_=function(){var e,t,n,r;this.tryAuth();try{for(var i=f(this.listens.values()),o=i.next();!o.done;o=i.next()){var s=o.value;try{for(var a=(n=void 0,f(s.values())),h=a.next();!h.done;h=a.next()){var l=h.value;this.sendListen_(l)}}catch(t){n={error:t}}finally{try{h&&!h.done&&(r=a.return)&&r.call(a)}finally{if(n)throw n.error}}}}catch(t){e={error:t}}finally{try{o&&!o.done&&(t=i.return)&&t.call(i)}finally{if(e)throw e.error}}for(var u=0;u<this.outstandingPuts_.length;u++)this.outstandingPuts_[u]&&this.sendPut_(u);for(;this.onDisconnectRequestQueue_.length;){var c=this.onDisconnectRequestQueue_.shift();this.sendOnDisconnect_(c.action,c.pathString,c.data,c.onComplete)}},oi.prototype.sendConnectStats_=function(){var t={};t["sdk.js."+Yr.replace(/\./g,"-")]=1,d()?t["framework.cordova"]=1:"object"==typeof navigator&&"ReactNative"===navigator.product&&(t["framework.reactnative"]=1),this.reportStats(t)},oi.prototype.shouldReconnect_=function(){var t=Qr.getInstance().currentlyOnline();return P(this.interruptReasons_)&&t},oi.nextPersistentConnectionId_=0,oi.nextConnectionId_=0,oi);function oi(t,e,n,r,i,o){var s=ri.call(this)||this;if(s.repoInfo_=t,s.onDataUpdate_=e,s.onConnectStatus_=n,s.onServerInfoUpdate_=r,s.authTokenProvider_=i,s.authOverride_=o,s.id=oi.nextPersistentConnectionId_++,s.log_=J("p:"+s.id+":"),s.interruptReasons_={},s.listens=new Map,s.outstandingPuts_=[],s.outstandingPutCount_=0,s.onDisconnectRequestQueue_=[],s.connected_=!1,s.reconnectDelay_=1e3,s.maxReconnectDelay_=3e5,s.securityDebugCallback_=null,s.lastSessionId=null,s.establishConnectionTimer_=null,s.visible_=!1,s.requestCBHash_={},s.requestNumber_=0,s.realtime_=null,s.authToken_=null,s.forceTokenRefresh_=!1,s.invalidAuthTokenCount_=0,s.firstConnection_=!0,s.lastConnectionAttemptTime_=null,s.lastConnectionEstablishedTime_=null,o&&!y())throw new Error("Auth override specified in options, but not supported on non Node.js platforms");return s.scheduleConnect_(0),Lr.getInstance().on("visible",s.onVisible_,s),-1===t.host.indexOf("fblocal")&&Qr.getInstance().on("online",s.onOnline_,s),s}var si,ai=(t(hi,si=ei),hi.prototype.reportStats=function(t){throw new Error("Method not implemented.")},hi.getListenId_=function(t,e){return void 0!==e?"tag$"+e:(C(t.getQueryParams().isDefault(),"should have a tag if it's not a default query."),t.path.toString())},hi.prototype.listen=function(t,e,r,i){var o=this,s=t.path.toString();this.log_("Listen called for "+s+" "+t.queryIdentifier());var a=hi.getListenId_(t,r),h={};this.listens_[a]=h;var n=t.getQueryParams().toRestQueryStringParameters();this.restRequest_(s+".json",n,function(t,e){var n=e;404===t&&(t=n=null),null===t&&o.onDataUpdate_(s,n,!1,r),R(o.listens_,a)===h&&i(t?401==t?"permission_denied":"rest_error:"+t:"ok",null)})},hi.prototype.unlisten=function(t,e){var n=hi.getListenId_(t,e);delete this.listens_[n]},hi.prototype.refreshAuthToken=function(t){},hi.prototype.restRequest_=function(i,o,s){var a=this;void 0===o&&(o={}),o.format="export",this.authTokenProvider_.getToken(!1).then(function(t){var e=t&&t.accessToken;e&&(o.auth=e);var n=(a.repoInfo_.secure?"https://":"http://")+a.repoInfo_.host+i+"?ns="+a.repoInfo_.namespace+function(t){for(var n=[],e=function(e,t){Array.isArray(t)?t.forEach(function(t){n.push(encodeURIComponent(e)+"="+encodeURIComponent(t))}):n.push(encodeURIComponent(e)+"="+encodeURIComponent(t))},r=0,i=Object.entries(t);r<i.length;r++){var o=i[r];e(o[0],o[1])}return n.length?"&"+n.join("&"):""}(o);a.log_("Sending REST request for "+n);var r=new XMLHttpRequest;r.onreadystatechange=function(){if(s&&4===r.readyState){a.log_("REST Response for "+n+" received. status:",r.status,"response:",r.responseText);var t=null;if(200<=r.status&&r.status<300){try{t=S(r.responseText)}catch(t){et("Failed to parse JSON response for "+n+": "+r.responseText)}s(null,t)}else 401!==r.status&&404!==r.status&&et("Got unsuccessful REST response for "+n+" Status: "+r.status),s(r.status);s=null}},r.open("GET",n,!0),r.send()})},hi);function hi(t,e,n){var r=si.call(this)||this;return r.repoInfo_=t,r.onDataUpdate_=e,r.authTokenProvider_=n,r.log_=J("p:rest:"),r.listens_={},r}var li="repo_interrupt",ui=(ci.prototype.toString=function(){return(this.repoInfo_.secure?"https://":"http://")+this.repoInfo_.host},ci.prototype.name=function(){return this.repoInfo_.namespace},ci.prototype.serverTime=function(){var t=this.infoData_.getNode(new Tt(".info/serverTimeOffset")).val()||0;return(new Date).getTime()+t},ci.prototype.generateServerValues=function(){return function(t){return(t=t||{}).timestamp=t.timestamp||(new Date).getTime(),t}({timestamp:this.serverTime()})},ci.prototype.onDataUpdate_=function(t,e,n,r){this.dataUpdateCount++;var i=new Tt(t);e=this.interceptServerDataCallback_?this.interceptServerDataCallback_(t,e):e;var o=[];if(r)if(n){var s=D(e,function(t){return $e(t)});o=this.serverSyncTree_.applyTaggedQueryMerge(i,s,r)}else{var a=$e(e);o=this.serverSyncTree_.applyTaggedQueryOverwrite(i,a,r)}else if(n){var h=D(e,function(t){return $e(t)});o=this.serverSyncTree_.applyServerMerge(i,h)}else{var l=$e(e);o=this.serverSyncTree_.applyServerOverwrite(i,l)}var u=i;0<o.length&&(u=this.rerunTransactions_(i)),this.eventQueue_.raiseEventsForChangedPath(u,o)},ci.prototype.interceptServerData_=function(t){this.interceptServerDataCallback_=t},ci.prototype.onConnectStatus_=function(t){this.updateInfo_("connected",t),!1===t&&this.runOnDisconnectEvents_()},ci.prototype.onServerInfoUpdate_=function(t){var n=this;mt(t,function(t,e){n.updateInfo_(t,e)})},ci.prototype.updateInfo_=function(t,e){var n=new Tt("/.info/"+t),r=$e(e);this.infoData_.updateSnapshot(n,r);var i=this.infoSyncTree_.applyServerOverwrite(n,r);this.eventQueue_.raiseEventsForChangedPath(n,i)},ci.prototype.getNextWriteId_=function(){return this.nextWriteId_++},ci.prototype.setWithPriority=function(i,t,e,o){var s=this;this.log_("set",{path:i.toString(),value:t,priority:e});var n=this.generateServerValues(),r=$e(t,e),a=wn(r,n),h=this.getNextWriteId_(),l=this.serverSyncTree_.applyUserOverwrite(i,a,h,!0);this.eventQueue_.queueEvents(l),this.server_.put(i.toString(),r.val(!0),function(t,e){var n="ok"===t;n||et("set at "+i+" failed: "+t);var r=s.serverSyncTree_.ackUserWrite(h,!n);s.eventQueue_.raiseEventsForChangedPath(i,r),s.callOnCompleteCallback(o,t,e)});var u=this.abortTransactions_(i);this.rerunTransactions_(u),this.eventQueue_.raiseEventsForChangedPath(u,[])},ci.prototype.update=function(o,t,s){var a=this;this.log_("update",{path:o.toString(),value:t});var r=!0,i=this.generateServerValues(),h={};if(mt(t,function(t,e){r=!1;var n=$e(e);h[t]=wn(n,i)}),r)$("update() called with empty data.  Don't do anything."),this.callOnCompleteCallback(s,"ok");else{var l=this.getNextWriteId_(),e=this.serverSyncTree_.applyUserMerge(o,h,l);this.eventQueue_.queueEvents(e),this.server_.merge(o.toString(),t,function(t,e){var n="ok"===t;n||et("update at "+o+" failed: "+t);var r=a.serverSyncTree_.ackUserWrite(l,!n),i=0<r.length?a.rerunTransactions_(o):o;a.eventQueue_.raiseEventsForChangedPath(i,r),a.callOnCompleteCallback(s,t,e)}),mt(t,function(t){var e=a.abortTransactions_(o.child(t));a.rerunTransactions_(e)}),this.eventQueue_.raiseEventsForChangedPath(o,[])}},ci.prototype.runOnDisconnectEvents_=function(){var r=this;this.log_("onDisconnectEvents");var t=this.generateServerValues(),e=function(t,n){var r=new vn;return t.forEachTree(new Tt(""),function(t,e){r.remember(t,wn(e,n))}),r}(this.onDisconnect_,t),i=[];e.forEachTree(Tt.Empty,function(t,e){i=i.concat(r.serverSyncTree_.applyServerOverwrite(t,e));var n=r.abortTransactions_(t);r.rerunTransactions_(n)}),this.onDisconnect_=new vn,this.eventQueue_.raiseEventsForChangedPath(Tt.Empty,i)},ci.prototype.onDisconnectCancel=function(n,r){var i=this;this.server_.onDisconnectCancel(n.toString(),function(t,e){"ok"===t&&i.onDisconnect_.forget(n),i.callOnCompleteCallback(r,t,e)})},ci.prototype.onDisconnectSet=function(n,t,r){var i=this,o=$e(t);this.server_.onDisconnectPut(n.toString(),o.val(!0),function(t,e){"ok"===t&&i.onDisconnect_.remember(n,o),i.callOnCompleteCallback(r,t,e)})},ci.prototype.onDisconnectSetWithPriority=function(n,t,e,r){var i=this,o=$e(t,e);this.server_.onDisconnectPut(n.toString(),o.val(!0),function(t,e){"ok"===t&&i.onDisconnect_.remember(n,o),i.callOnCompleteCallback(r,t,e)})},ci.prototype.onDisconnectUpdate=function(r,n,i){var o=this;if(P(n))return $("onDisconnect().update() called with empty data.  Don't do anything."),void this.callOnCompleteCallback(i,"ok");this.server_.onDisconnectMerge(r.toString(),n,function(t,e){"ok"===t&&mt(n,function(t,e){var n=$e(e);o.onDisconnect_.remember(r.child(t),n)}),o.callOnCompleteCallback(i,t,e)})},ci.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)},ci.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)},ci.prototype.interrupt=function(){this.persistentConnection_&&this.persistentConnection_.interrupt(li)},ci.prototype.resume=function(){this.persistentConnection_&&this.persistentConnection_.resume(li)},ci.prototype.stats=function(t){if(void 0===t&&(t=!1),"undefined"!=typeof console){var e;e=t?(this.statsListener_||(this.statsListener_=new Tr(this.stats_)),this.statsListener_.get()):this.stats_.get();var i=Object.keys(e).reduce(function(t,e){return Math.max(e.length,t)},0);mt(e,function(t,e){for(var n=t,r=t.length;r<i+2;r++)n+=" ";console.log(n+e)})}},ci.prototype.statsIncrementCounter=function(t){this.stats_.incrementCounter(t),this.statsReporter_.includeStat(t)},ci.prototype.log_=function(){for(var t=[],e=0;e<arguments.length;e++)t[e]=arguments[e];var n="";this.persistentConnection_&&(n=this.persistentConnection_.id+":"),$.apply(void 0,o([n],t))},ci.prototype.callOnCompleteCallback=function(r,i,o){r&&Et(function(){if("ok"==i)r(null);else{var t=(i||"error").toUpperCase(),e=t;o&&(e+=": "+o);var n=new Error(e);n.code=t,r(n)}})},Object.defineProperty(ci.prototype,"database",{get:function(){return this.__database||(this.__database=new Di(this))},enumerable:!0,configurable:!0}),ci);function ci(t,e,n){var r,s=this;if(this.repoInfo_=t,this.app=n,this.dataUpdateCount=0,this.statsListener_=null,this.eventQueue_=new Pr,this.nextWriteId_=1,this.interceptServerDataCallback_=null,this.onDisconnect_=new vn,this.persistentConnection_=null,r="undefined"!=typeof process&&process.env[ut]?new mr(n):new yr(n),this.stats_=br.getCollection(t),e||0<=("object"==typeof window&&window.navigator&&window.navigator.userAgent||"").search(/googlebot|google webmaster tools|bingbot|yahoo! slurp|baiduspider|yandexbot|duckduckbot/i))this.server_=new ai(this.repoInfo_,this.onDataUpdate_.bind(this),r),setTimeout(this.onConnectStatus_.bind(this,!0),0);else{var i=n.options.databaseAuthVariableOverride;if(null!=i){if("object"!=typeof i)throw new Error("Only objects are supported for option databaseAuthVariableOverride");try{T(i)}catch(t){throw new Error("Invalid authOverride provided: "+t)}}this.persistentConnection_=new ii(this.repoInfo_,this.onDataUpdate_.bind(this),this.onConnectStatus_.bind(this),this.onServerInfoUpdate_.bind(this),r,i),this.server_=this.persistentConnection_}r.addTokenChangeListener(function(t){s.server_.refreshAuthToken(t)}),this.statsReporter_=br.getOrCreateReporter(t,function(){return new Nr(s.stats_,s.server_)}),this.transactions_init_(),this.infoData_=new fr,this.infoSyncTree_=new pr({startListening:function(t,e,n,r){var i=[],o=s.infoData_.getNode(t.path);return o.isEmpty()||(i=s.infoSyncTree_.applyServerOverwrite(t.path,o),setTimeout(function(){r("ok")},0)),i},stopListening:function(){}}),this.updateInfo_("connected",!1),this.serverSyncTree_=new pr({startListening:function(r,t,e,i){return s.server_.listen(r,e,t,function(t,e){var n=i(t,e);s.eventQueue_.raiseEventsForChangedPath(r.path,n)}),[]},stopListening:function(t,e){s.server_.unlisten(t,e)}})}var pi=(di.prototype.getStartPost=function(){return this.startPost_},di.prototype.getEndPost=function(){return this.endPost_},di.prototype.matches=function(t){return this.index_.compare(this.getStartPost(),t)<=0&&this.index_.compare(t,this.getEndPost())<=0},di.prototype.updateChild=function(t,e,n,r,i,o){return this.matches(new oe(e,n))||(n=je.EMPTY_NODE),this.indexedFilter_.updateChild(t,e,n,r,i,o)},di.prototype.updateFullNode=function(t,e,n){e.isLeafNode()&&(e=je.EMPTY_NODE);var r=e.withIndex(this.index_);r=r.updatePriority(je.EMPTY_NODE);var i=this;return e.forEachChild(Se,function(t,e){i.matches(new oe(t,e))||(r=r.updateImmediateChild(t,je.EMPTY_NODE))}),this.indexedFilter_.updateFullNode(t,r,n)},di.prototype.updatePriority=function(t,e){return t},di.prototype.filtersNodes=function(){return!0},di.prototype.getIndexedFilter=function(){return this.indexedFilter_},di.prototype.getIndex=function(){return this.index_},di.getStartPost_=function(t){if(t.hasStart()){var e=t.getIndexStartName();return t.getIndex().makePost(t.getIndexStartValue(),e)}return t.getIndex().minPost()},di.getEndPost_=function(t){if(t.hasEnd()){var e=t.getIndexEndName();return t.getIndex().makePost(t.getIndexEndValue(),e)}return t.getIndex().maxPost()},di);function di(t){this.indexedFilter_=new Vn(t.getIndex()),this.index_=t.getIndex(),this.startPost_=di.getStartPost_(t),this.endPost_=di.getEndPost_(t)}var fi=(_i.prototype.updateChild=function(t,e,n,r,i,o){return this.rangedFilter_.matches(new oe(e,n))||(n=je.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)},_i.prototype.updateFullNode=function(t,e,n){var r;if(e.isLeafNode()||e.isEmpty())r=je.EMPTY_NODE.withIndex(this.index_);else if(2*this.limit_<e.numChildren()&&e.isIndexed(this.index_)){r=je.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(je.EMPTY_NODE);var a=void 0,h=void 0,l=void 0;if(i=void 0,this.reverse_){i=r.getReverseIterator(this.index_),a=this.rangedFilter_.getEndPost(),h=this.rangedFilter_.getStartPost();var u=this.index_.getCompare();l=function(t,e){return u(e,t)}}else i=r.getIterator(this.index_),a=this.rangedFilter_.getStartPost(),h=this.rangedFilter_.getEndPost(),l=this.index_.getCompare();o=0;for(var c=!1;i.hasNext();)s=i.getNext(),!c&&l(a,s)<=0&&(c=!0),c&&o<this.limit_&&l(s,h)<=0?o++:r=r.updateImmediateChild(s.name,je.EMPTY_NODE)}return this.rangedFilter_.getIndexedFilter().updateFullNode(t,r,n)},_i.prototype.updatePriority=function(t,e){return t},_i.prototype.filtersNodes=function(){return!0},_i.prototype.getIndexedFilter=function(){return this.rangedFilter_.getIndexedFilter()},_i.prototype.getIndex=function(){return this.index_},_i.prototype.fullLimitUpdateChild_=function(t,e,n,r,i){var o;if(this.reverse_){var s=this.index_.getCompare();o=function(t,e){return s(e,t)}}else o=this.index_.getCompare();var a=t;C(a.numChildren()==this.limit_,"");var h=new oe(e,n),l=this.reverse_?a.getFirstChild(this.index_):a.getLastChild(this.index_),u=this.rangedFilter_.matches(h);if(a.hasChild(e)){for(var c=a.getImmediateChild(e),p=r.getChildAfterChild(this.index_,l,this.reverse_);null!=p&&(p.name==e||a.hasChild(p.name));)p=r.getChildAfterChild(this.index_,p,this.reverse_);var d=null==p?1:o(p,h);if(u&&!n.isEmpty()&&0<=d)return null!=i&&i.trackChildChange(qn.childChangedChange(e,n,c)),a.updateImmediateChild(e,n);null!=i&&i.trackChildChange(qn.childRemovedChange(e,c));var f=a.updateImmediateChild(e,je.EMPTY_NODE);return null!=p&&this.rangedFilter_.matches(p)?(null!=i&&i.trackChildChange(qn.childAddedChange(p.name,p.node)),f.updateImmediateChild(p.name,p.node)):f}return n.isEmpty()?t:u&&0<=o(l,h)?(null!=i&&(i.trackChildChange(qn.childRemovedChange(l.name,l.node)),i.trackChildChange(qn.childAddedChange(e,n))),a.updateImmediateChild(e,n).updateImmediateChild(l.name,je.EMPTY_NODE)):t},_i);function _i(t){this.rangedFilter_=new pi(t),this.index_=t.getIndex(),this.limit_=t.getLimit(),this.reverse_=!t.isViewFromLeft()}var yi=(vi.prototype.hasStart=function(){return this.startSet_},vi.prototype.isViewFromLeft=function(){return""===this.viewFrom_?this.startSet_:this.viewFrom_===vi.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_LEFT},vi.prototype.getIndexStartValue=function(){return C(this.startSet_,"Only valid if start has been set"),this.indexStartValue_},vi.prototype.getIndexStartName=function(){return C(this.startSet_,"Only valid if start has been set"),this.startNameSet_?this.indexStartName_:_t},vi.prototype.hasEnd=function(){return this.endSet_},vi.prototype.getIndexEndValue=function(){return C(this.endSet_,"Only valid if end has been set"),this.indexEndValue_},vi.prototype.getIndexEndName=function(){return C(this.endSet_,"Only valid if end has been set"),this.endNameSet_?this.indexEndName_:yt},vi.prototype.hasLimit=function(){return this.limitSet_},vi.prototype.hasAnchoredLimit=function(){return this.limitSet_&&""!==this.viewFrom_},vi.prototype.getLimit=function(){return C(this.limitSet_,"Only valid if limit has been set"),this.limit_},vi.prototype.getIndex=function(){return this.index_},vi.prototype.copy_=function(){var t=new vi;return t.limitSet_=this.limitSet_,t.limit_=this.limit_,t.startSet_=this.startSet_,t.indexStartValue_=this.indexStartValue_,t.startNameSet_=this.startNameSet_,t.indexStartName_=this.indexStartName_,t.endSet_=this.endSet_,t.indexEndValue_=this.indexEndValue_,t.endNameSet_=this.endNameSet_,t.indexEndName_=this.indexEndName_,t.index_=this.index_,t.viewFrom_=this.viewFrom_,t},vi.prototype.limit=function(t){var e=this.copy_();return e.limitSet_=!0,e.limit_=t,e.viewFrom_="",e},vi.prototype.limitToFirst=function(t){var e=this.copy_();return e.limitSet_=!0,e.limit_=t,e.viewFrom_=vi.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_LEFT,e},vi.prototype.limitToLast=function(t){var e=this.copy_();return e.limitSet_=!0,e.limit_=t,e.viewFrom_=vi.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_RIGHT,e},vi.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},vi.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},vi.prototype.orderBy=function(t){var e=this.copy_();return e.index_=t,e},vi.prototype.getQueryObject=function(){var t=vi.WIRE_PROTOCOL_CONSTANTS_,e={};if(this.startSet_&&(e[t.INDEX_START_VALUE]=this.indexStartValue_,this.startNameSet_&&(e[t.INDEX_START_NAME]=this.indexStartName_)),this.endSet_&&(e[t.INDEX_END_VALUE]=this.indexEndValue_,this.endNameSet_&&(e[t.INDEX_END_NAME]=this.indexEndName_)),this.limitSet_){e[t.LIMIT]=this.limit_;var n=this.viewFrom_;""===n&&(n=this.isViewFromLeft()?t.VIEW_FROM_LEFT:t.VIEW_FROM_RIGHT),e[t.VIEW_FROM]=n}return this.index_!==Se&&(e[t.INDEX]=this.index_.toString()),e},vi.prototype.loadsAllData=function(){return!(this.startSet_||this.endSet_||this.limitSet_)},vi.prototype.isDefault=function(){return this.loadsAllData()&&this.index_==Se},vi.prototype.getNodeFilter=function(){return this.loadsAllData()?new Vn(this.getIndex()):this.hasLimit()?new fi(this):new pi(this)},vi.prototype.toRestQueryStringParameters=function(){var t,e=vi.REST_QUERY_CONSTANTS_,n={};return this.isDefault()||(t=this.index_===Se?e.PRIORITY_INDEX:this.index_===tn?e.VALUE_INDEX:this.index_===fe?e.KEY_INDEX:(C(this.index_ instanceof en,"Unrecognized index type!"),this.index_.toString()),n[e.ORDER_BY]=T(t),this.startSet_&&(n[e.START_AT]=T(this.indexStartValue_),this.startNameSet_&&(n[e.START_AT]+=","+T(this.indexStartName_))),this.endSet_&&(n[e.END_AT]=T(this.indexEndValue_),this.endNameSet_&&(n[e.END_AT]+=","+T(this.indexEndName_))),this.limitSet_&&(this.isViewFromLeft()?n[e.LIMIT_TO_FIRST]=this.limit_:n[e.LIMIT_TO_LAST]=this.limit_)),n},vi.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"},vi.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"},vi.DEFAULT=new vi,vi);function vi(){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_=Se}var gi,mi=(t(Ci,gi=_n),Ci.prototype.getKey=function(){return k("Reference.key",0,0,arguments.length),this.path.isEmpty()?null:this.path.getBack()},Ci.prototype.child=function(t){return k("Reference.child",1,1,arguments.length),"number"==typeof t?t=String(t):t instanceof Tt||(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 Ci(this.repo,this.path.child(t))},Ci.prototype.getParent=function(){k("Reference.parent",0,0,arguments.length);var t=this.path.parent();return null===t?null:new Ci(this.repo,t)},Ci.prototype.getRoot=function(){k("Reference.root",0,0,arguments.length);for(var t=this;null!==t.getParent();)t=t.getParent();return t},Ci.prototype.databaseProp=function(){return this.repo.database},Ci.prototype.set=function(t,e){k("Reference.set",1,2,arguments.length),Bt("Reference.set",this.path),Wt("Reference.set",1,t,this.path,!1),A("Reference.set",2,e,!0);var n=new p;return this.repo.setWithPriority(this.path,t,null,n.wrapCallback(e)),n.promise},Ci.prototype.update=function(t,e){if(k("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,et("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 p;return this.repo.update(this.path,t,i.wrapCallback(e)),i.promise},Ci.prototype.setWithPriority=function(t,e,n){if(k("Reference.setWithPriority",2,3,arguments.length),Bt("Reference.setWithPriority",this.path),Wt("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 p;return this.repo.setWithPriority(this.path,t,e,r.wrapCallback(n)),r.promise},Ci.prototype.remove=function(t){return k("Reference.remove",0,1,arguments.length),Bt("Reference.remove",this.path),A("Reference.remove",1,t,!0),this.set(null,t)},Ci.prototype.transaction=function(t,r,e){if(k("Reference.transaction",1,3,arguments.length),Bt("Reference.transaction",this.path),A("Reference.transaction",1,t,!1),A("Reference.transaction",2,r,!0),function(t,e,n,r){if((!r||void 0!==n)&&"boolean"!=typeof n)throw new Error(F(t,e,r)+"must be a boolean.")}("Reference.transaction",3,e,!0),".length"===this.getKey()||".keys"===this.getKey())throw"Reference.transaction failed: "+this.getKey()+" is a read-only object.";void 0===e&&(e=!0);var i=new p;return"function"==typeof r&&i.promise.catch(function(){}),this.repo.startTransaction(this.path,t,function(t,e,n){t?i.reject(t):i.resolve(new Zt(e,n)),"function"==typeof r&&r(t,e,n)},e),i.promise},Ci.prototype.setPriority=function(t,e){k("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 p;return this.repo.setWithPriority(this.path.child(".priority"),t,null,n.wrapCallback(e)),n.promise},Ci.prototype.push=function(t,e){k("Reference.push",0,2,arguments.length),Bt("Reference.push",this.path),Wt("Reference.push",1,t,this.path,!0),A("Reference.push",2,e,!0);var n,r=this.repo.serverTime(),i=ie(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},Ci.prototype.onDisconnect=function(){return Bt("Reference.onDisconnect",this.path),new $t(this.repo,this.path)},Object.defineProperty(Ci.prototype,"database",{get:function(){return this.databaseProp()},enumerable:!0,configurable:!0}),Object.defineProperty(Ci.prototype,"key",{get:function(){return this.getKey()},enumerable:!0,configurable:!0}),Object.defineProperty(Ci.prototype,"parent",{get:function(){return this.getParent()},enumerable:!0,configurable:!0}),Object.defineProperty(Ci.prototype,"root",{get:function(){return this.getRoot()},enumerable:!0,configurable:!0}),Ci);function Ci(t,e){if(!(t instanceof ui))throw new Error("new Reference() no longer supported - use app.database().");return gi.call(this,t,e,yi.DEFAULT,!1)||this}_n.__referenceConstructor=mi,ir.__referenceConstructor=mi;var Ei,wi,bi=function(){this.children={},this.childCount=0,this.value=null},Si=(Ti.prototype.subTree=function(t){for(var e,n=t instanceof Tt?t:new Tt(t),r=this;null!==(e=n.getFront());)r=new Ti(e,r,R(r.node_.children,e)||new bi),n=n.popFront();return r},Ti.prototype.getValue=function(){return this.node_.value},Ti.prototype.setValue=function(t){C(void 0!==t,"Cannot set value to undefined"),this.node_.value=t,this.updateParents_()},Ti.prototype.clear=function(){this.node_.value=null,this.node_.children={},this.node_.childCount=0,this.updateParents_()},Ti.prototype.hasChildren=function(){return 0<this.node_.childCount},Ti.prototype.isEmpty=function(){return null===this.getValue()&&!this.hasChildren()},Ti.prototype.forEachChild=function(n){var r=this;mt(this.node_.children,function(t,e){n(new Ti(t,r,e))})},Ti.prototype.forEachDescendant=function(e,t,n){t&&!n&&e(this),this.forEachChild(function(t){t.forEachDescendant(e,!0,n)}),t&&n&&e(this)},Ti.prototype.forEachAncestor=function(t,e){for(var n=e?this:this.parent();null!==n;){if(t(n))return!0;n=n.parent()}return!1},Ti.prototype.forEachImmediateDescendantWithValue=function(e){this.forEachChild(function(t){null!==t.getValue()?e(t):t.forEachImmediateDescendantWithValue(e)})},Ti.prototype.path=function(){return new Tt(null===this.parent_?this.name_:this.parent_.path()+"/"+this.name_)},Ti.prototype.name=function(){return this.name_},Ti.prototype.parent=function(){return this.parent_},Ti.prototype.updateParents_=function(){null!==this.parent_&&this.parent_.updateChild_(this.name_,this)},Ti.prototype.updateChild_=function(t,e){var n=e.isEmpty(),r=N(this.node_.children,t);n&&r?(delete this.node_.children[t],this.node_.childCount--,this.updateParents_()):n||r||(this.node_.children[t]=e.node_,this.node_.childCount++,this.updateParents_())},Ti);function Ti(t,e,n){void 0===t&&(t=""),void 0===e&&(e=null),void 0===n&&(n=new bi),this.name_=t,this.parent_=e,this.node_=n}(wi=Ei=Ei||{})[wi.RUN=0]="RUN",wi[wi.SENT=1]="SENT",wi[wi.COMPLETED=2]="COMPLETED",wi[wi.SENT_NEEDS_ABORT=3]="SENT_NEEDS_ABORT",wi[wi.NEEDS_ABORT=4]="NEEDS_ABORT",ui.MAX_TRANSACTION_RETRIES_=25,ui.prototype.transactions_init_=function(){this.transactionQueueTree_=new Si},ui.prototype.startTransaction=function(t,e,n,r){this.log_("transaction on "+t);function i(){}var o=new mi(this,t);o.on("value",i);var s={path:t,update:e,onComplete:n,status:null,order:ct(),applyLocally:r,retryCount:0,unwatcher:function(){o.off("value",i)},abortReason:null,currentWriteId:null,currentInputSnapshot:null,currentOutputSnapshotRaw:null,currentOutputSnapshotResolved:null},a=this.getLatestState_(t);s.currentInputSnapshot=a;var h=s.update(a.val());if(void 0===h){if(s.unwatcher(),s.currentOutputSnapshotRaw=null,s.currentOutputSnapshotResolved=null,s.onComplete){var l=new rn(s.currentInputSnapshot,new mi(this,s.path),Se);s.onComplete(null,!1,l)}}else{Xt("transaction failed: Data returned ",h,s.path),s.status=Ei.RUN;var u=this.transactionQueueTree_.subTree(t),c=u.getValue()||[];c.push(s),u.setValue(c);var p=void 0;if("object"==typeof h&&null!==h&&N(h,".priority"))p=R(h,".priority"),C(Mt(p),"Invalid priority returned by transaction. Priority must be a valid string, finite number, server value, or null.");else p=(this.serverSyncTree_.calcCompleteEventCache(t)||je.EMPTY_NODE).getPriority().val();p=p;var d=this.generateServerValues(),f=$e(h,p),_=wn(f,d);s.currentOutputSnapshotRaw=f,s.currentOutputSnapshotResolved=_,s.currentWriteId=this.getNextWriteId_();var y=this.serverSyncTree_.applyUserOverwrite(t,_,s.currentWriteId,s.applyLocally);this.eventQueue_.raiseEventsForChangedPath(t,y),this.sendReadyTransactions_()}},ui.prototype.getLatestState_=function(t,e){return this.serverSyncTree_.calcCompleteEventCache(t,e)||je.EMPTY_NODE},ui.prototype.sendReadyTransactions_=function(t){var e=this;if(void 0===t&&(t=this.transactionQueueTree_),t||this.pruneCompletedTransactionsBelowNode_(t),null!==t.getValue()){var n=this.buildTransactionQueue_(t);C(0<n.length,"Sending zero length transaction queue"),n.every(function(t){return t.status===Ei.RUN})&&this.sendTransactionQueue_(t.path(),n)}else t.hasChildren()&&t.forEachChild(function(t){e.sendReadyTransactions_(t)})},ui.prototype.sendTransactionQueue_=function(a,h){for(var l=this,t=h.map(function(t){return t.currentWriteId}),e=this.getLatestState_(a,t),n=e,r=e.hash(),i=0;i<h.length;i++){var o=h[i];C(o.status===Ei.RUN,"tryToSendTransactionQueue_: items in queue should all be run."),o.status=Ei.SENT,o.retryCount++;var s=Tt.relativePath(a,o.path);n=n.updateChild(s,o.currentOutputSnapshotRaw)}var u=n.val(!0),c=a;this.server_.put(c.toString(),u,function(t){l.log_("transaction put response",{path:c.toString(),status:t});var e=[];if("ok"===t){for(var n=[],r=0;r<h.length;r++){if(h[r].status=Ei.COMPLETED,e=e.concat(l.serverSyncTree_.ackUserWrite(h[r].currentWriteId)),h[r].onComplete){var i=h[r].currentOutputSnapshotResolved,o=new mi(l,h[r].path),s=new rn(i,o,Se);n.push(h[r].onComplete.bind(null,null,!0,s))}h[r].unwatcher()}l.pruneCompletedTransactionsBelowNode_(l.transactionQueueTree_.subTree(a)),l.sendReadyTransactions_(),l.eventQueue_.raiseEventsForChangedPath(a,e);for(r=0;r<n.length;r++)Et(n[r])}else{if("datastale"===t)for(r=0;r<h.length;r++)h[r].status===Ei.SENT_NEEDS_ABORT?h[r].status=Ei.NEEDS_ABORT:h[r].status=Ei.RUN;else{et("transaction at "+c.toString()+" failed: "+t);for(r=0;r<h.length;r++)h[r].status=Ei.NEEDS_ABORT,h[r].abortReason=t}l.rerunTransactions_(a)}},r)},ui.prototype.rerunTransactions_=function(t){var e=this.getAncestorTransactionNode_(t),n=e.path(),r=this.buildTransactionQueue_(e);return this.rerunTransactionQueue_(r,n),n},ui.prototype.rerunTransactionQueue_=function(t,e){if(0!==t.length){for(var n,r=[],i=[],o=t.filter(function(t){return t.status===Ei.RUN}).map(function(t){return t.currentWriteId}),s=0;s<t.length;s++){var a=t[s],h=Tt.relativePath(e,a.path),l=!1,u=void 0;if(C(null!==h,"rerunTransactionsUnderNode_: relativePath should not be null."),a.status===Ei.NEEDS_ABORT)l=!0,u=a.abortReason,i=i.concat(this.serverSyncTree_.ackUserWrite(a.currentWriteId,!0));else if(a.status===Ei.RUN)if(a.retryCount>=ui.MAX_TRANSACTION_RETRIES_)l=!0,u="maxretry",i=i.concat(this.serverSyncTree_.ackUserWrite(a.currentWriteId,!0));else{var c=this.getLatestState_(a.path,o);a.currentInputSnapshot=c;var p=t[s].update(c.val());if(void 0!==p){Xt("transaction failed: Data returned ",p,a.path);var d=$e(p);"object"==typeof p&&null!=p&&N(p,".priority")||(d=d.updatePriority(c.getPriority()));var f=a.currentWriteId,_=this.generateServerValues(),y=wn(d,_);a.currentOutputSnapshotRaw=d,a.currentOutputSnapshotResolved=y,a.currentWriteId=this.getNextWriteId_(),o.splice(o.indexOf(f),1),i=(i=i.concat(this.serverSyncTree_.applyUserOverwrite(a.path,y,a.currentWriteId,a.applyLocally))).concat(this.serverSyncTree_.ackUserWrite(f,!0))}else l=!0,u="nodata",i=i.concat(this.serverSyncTree_.ackUserWrite(a.currentWriteId,!0))}if(this.eventQueue_.raiseEventsForChangedPath(e,i),i=[],l&&(t[s].status=Ei.COMPLETED,n=t[s].unwatcher,setTimeout(n,Math.floor(0)),t[s].onComplete))if("nodata"===u){var v=new mi(this,t[s].path),g=t[s].currentInputSnapshot,m=new rn(g,v,Se);r.push(t[s].onComplete.bind(null,null,!1,m))}else r.push(t[s].onComplete.bind(null,new Error(u),!1,null))}this.pruneCompletedTransactionsBelowNode_(this.transactionQueueTree_);for(s=0;s<r.length;s++)Et(r[s]);this.sendReadyTransactions_()}},ui.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},ui.prototype.buildTransactionQueue_=function(t){var e=[];return this.aggregateTransactionQueuesForNode_(t,e),e.sort(function(t,e){return t.order-e.order}),e},ui.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)})},ui.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!==Ei.COMPLETED&&(n[r]=n[i],r++);n.length=r,t.setValue(0<n.length?n:null)}t.forEachChild(function(t){e.pruneCompletedTransactionsBelowNode_(t)})},ui.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},ui.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===Ei.SENT_NEEDS_ABORT);else if(e[o].status===Ei.SENT)C(i===o-1,"All SENT items should be at beginning of queue."),e[i=o].status=Ei.SENT_NEEDS_ABORT,e[o].abortReason="set";else if(C(e[o].status===Ei.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++)Et(n[o])}};var Ii,Ni="databaseURL",Ri=(Pi.getInstance=function(){return Ii=Ii||new Pi},Pi.prototype.interrupt=function(){for(var t in this.repos_)for(var e in this.repos_[t])this.repos_[t][e].interrupt()},Pi.prototype.resume=function(){for(var t in this.repos_)for(var e in this.repos_[t])this.repos_[t][e].resume()},Pi.prototype.databaseFromApp=function(t,e){var n=e||t.options[Ni];void 0===n&&tt("Can't determine Firebase Database URL.  Be sure to include "+Ni+" option when calling firebase.initializeApp().");var r=Ft(n),i=r.repoInfo,o=void 0;return"undefined"!=typeof process&&(o=process.env[ut]),o&&(n="http://"+o+"?ns="+i.namespace,i=(r=Ft(n)).repoInfo),jt("Invalid Firebase Database URL",1,r),r.path.isEmpty()||tt("Database URL must point to the root of a Firebase Database (not including a child path)."),this.createRepo(i,t).database},Pi.prototype.deleteRepo=function(t){var e=R(this.repos_,t.app.name);e&&R(e,t.repoInfo_.toURLString())===t||tt("Database "+t.app.name+"("+t.repoInfo_+") has already been deleted."),t.interrupt(),delete e[t.repoInfo_.toURLString()]},Pi.prototype.createRepo=function(t,e){var n=R(this.repos_,e.name);n||(n={},this.repos_[e.name]=n);var r=R(n,t.toURLString());return r&&tt("Database initialized multiple times. Please make sure the format of the database URL matches with each database() call."),r=new ui(t,this.useRestClient_,e),n[t.toURLString()]=r},Pi.prototype.forceRestClient=function(t){this.useRestClient_=t},Pi);function Pi(){this.repos_={},this.useRestClient_=!1}var Di=(Object.defineProperty(Oi.prototype,"app",{get:function(){return this.repo_.app},enumerable:!0,configurable:!0}),Oi.prototype.ref=function(t){return this.checkDeleted_("ref"),k("database.ref",0,1,arguments.length),t instanceof mi?this.refFromURL(t.toString()):void 0!==t?this.root_.child(t):this.root_},Oi.prototype.refFromURL=function(t){var e="database.refFromURL";this.checkDeleted_(e),k(e,1,1,arguments.length);var n=Ft(t);jt(e,1,n);var r=n.repoInfo;return r.host!==this.repo_.repoInfo_.host&&tt(e+": Host name does not match the current database: (found "+r.host+" but expected "+this.repo_.repoInfo_.host+")"),this.ref(n.path.toString())},Oi.prototype.checkDeleted_=function(t){null===this.repo_&&tt("Cannot call "+t+" on a deleted database.")},Oi.prototype.goOffline=function(){k("database.goOffline",0,0,arguments.length),this.checkDeleted_("goOffline"),this.repo_.interrupt()},Oi.prototype.goOnline=function(){k("database.goOnline",0,0,arguments.length),this.checkDeleted_("goOnline"),this.repo_.resume()},Oi.ServerValue={TIMESTAMP:{".sv":"timestamp"}},Oi);function Oi(t){(this.repo_=t)instanceof ui||tt("Don't call new Database() directly - please use firebase.database()."),this.root_=new mi(t,Tt.Empty),this.INTERNAL=new xi(this)}var xi=(ki.prototype.delete=function(){return function(o,s,a,h){return new(a=a||Promise)(function(t,e){function n(t){try{i(h.next(t))}catch(t){e(t)}}function r(t){try{i(h.throw(t))}catch(t){e(t)}}function i(e){e.done?t(e.value):new a(function(t){t(e.value)}).then(n,r)}i((h=h.apply(o,s||[])).next())})}(this,void 0,void 0,function(){return e(this,function(t){return this.database.checkDeleted_("delete"),Ri.getInstance().deleteRepo(this.database.repo_),this.database.repo_=null,this.database.root_=null,this.database.INTERNAL=null,this.database=null,[2]})})},ki);function ki(t){this.database=t}var Fi=Object.freeze({forceLongPolling:function(){Gr.forceDisallow(),Hr.forceAllow()},forceWebSockets:function(){Hr.forceDisallow()},isWebSocketsAvailable:function(){return Gr.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)}}),Ai=ii;ii.prototype.simpleListen=function(t,e){this.sendRequest("q",{p:t},e)},ii.prototype.echo=function(t,e){this.sendRequest("echo",{d:t},e)};var Li,Mi,Wi=Zr,Qi=xt,qi=Object.freeze({DataConnection:Ai,RealTimeConnection:Wi,hijackHash:function(i){var o=ii.prototype.put;return ii.prototype.put=function(t,e,n,r){void 0!==r&&(r=i()),o.call(this,t,e,n,r)},function(){ii.prototype.put=o}},ConnectionTarget:Qi,queryIdentifier:function(t){return t.queryIdentifier()},forceRestClient:function(t){Ri.getInstance().forceRestClient(t)}}),Ui=Di.ServerValue;Li=(Mi=Vi).SDK_VERSION,Yr=Li,Mi.INTERNAL.registerService("database",function(t,e,n){return Ri.getInstance().databaseFromApp(t,n)},{Reference:mi,Query:_n,Database:Di,DataSnapshot:rn,enableLogging:X,INTERNAL:Fi,ServerValue:Ui,TEST_ACCESS:qi},null,!0)}).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