https://cdnjs.cloudflare.com/ajax/libs/intercom.js/0.1.4/intercom.min.js

intercom.0.1.4.min.js

/*! intercom.js | https://github.com/diy/intercom.js | Apache License (v2) */
var Intercom=function(){var g=function(){};g.createInterface=function(b){return{on:function(a,c){"undefined"===typeof this[b]&&(this[b]={});this[b].hasOwnProperty(a)||(this[b][a]=[]);this[b][a].push(c)},off:function(a,c){"undefined"!==typeof this[b]&&this[b].hasOwnProperty(a)&&i.removeItem(c,this[b][a])},trigger:function(a){if("undefined"!==typeof this[b]&&this[b].hasOwnProperty(a))for(var c=Array.prototype.slice.call(arguments,1),e=0;e<this[b][a].length;e++)this[b][a][e].apply(this[b][a][e],c)}}};
var m=g.createInterface("_handlers");g.prototype._on=m.on;g.prototype._off=m.off;g.prototype._trigger=m.trigger;var n=g.createInterface("handlers");g.prototype.on=function(){n.on.apply(this,arguments);Array.prototype.unshift.call(arguments,"on");this._trigger.apply(this,arguments)};g.prototype.off=n.off;g.prototype.trigger=n.trigger;var f=window.localStorage;"undefined"===typeof f&&(f={getItem:function(){},setItem:function(){},removeItem:function(){}});var i={},h=function(){return(65536*(1+Math.random())|
0).toString(16).substring(1)};i.guid=function(){return h()+h()+"-"+h()+"-"+h()+"-"+h()+"-"+h()+h()+h()};i.throttle=function(b,a){var c=0;return function(){var e=(new Date).getTime();e-c>b&&(c=e,a.apply(this,arguments))}};i.extend=function(b,a){if("undefined"===typeof b||!b)b={};if("object"===typeof a)for(var c in a)a.hasOwnProperty(c)&&(b[c]=a[c]);return b};i.removeItem=function(b,a){for(var c=a.length-1;0<=c;c--)a[c]===b&&a.splice(c,1);return a};var d=function(){var b=this,a=(new Date).getTime();
this.origin=i.guid();this.lastMessage=a;this.bindings=[];this.receivedIDs={};this.previousValues={};a=function(){b._onStorageEvent.apply(b,arguments)};window.attachEvent?document.attachEvent("onstorage",a):window.addEventListener("storage",a,!1)};d.prototype._transaction=function(b){var a=this,c=!1,e=!1,p=null,d=function(){if(!c){var g=(new Date).getTime(),s=parseInt(f.getItem(l)||0);s&&1E3>g-s?(e||(a._on("storage",d),e=!0),p=window.setTimeout(d,20)):(c=!0,f.setItem(l,g),b(),e&&a._off("storage",d),
p&&window.clearTimeout(p),f.removeItem(l))}};d()};d.prototype._cleanup_emit=i.throttle(100,function(){this._transaction(function(){for(var b=(new Date).getTime()-t,a=0,c=JSON.parse(f.getItem(j)||"[]"),e=c.length-1;0<=e;e--)c[e].timestamp<b&&(c.splice(e,1),a++);0<a&&f.setItem(j,JSON.stringify(c))})});d.prototype._cleanup_once=i.throttle(100,function(){var b=this;this._transaction(function(){var a,c=JSON.parse(f.getItem(k)||"{}");(new Date).getTime();var e=0;for(a in c)b._once_expired(a,c)&&(delete c[a],
e++);0<e&&f.setItem(k,JSON.stringify(c))})});d.prototype._once_expired=function(b,a){if(!a||!a.hasOwnProperty(b)||"object"!==typeof a[b])return!0;var c=a[b].ttl||u,e=(new Date).getTime();return a[b].timestamp<e-c};d.prototype._localStorageChanged=function(b,a){if(b&&b.key)return b.key===a;var c=f.getItem(a);if(c===this.previousValues[a])return!1;this.previousValues[a]=c;return!0};d.prototype._onStorageEvent=function(b){var b=b||window.event,a=this;this._localStorageChanged(b,j)&&this._transaction(function(){for(var b=
(new Date).getTime(),e=f.getItem(j),e=JSON.parse(e||"[]"),d=0;d<e.length;d++)if(e[d].origin!==a.origin&&!(e[d].timestamp<a.lastMessage)){if(e[d].id){if(a.receivedIDs.hasOwnProperty(e[d].id))continue;a.receivedIDs[e[d].id]=!0}a.trigger(e[d].name,e[d].payload)}a.lastMessage=b});this._trigger("storage",b)};d.prototype._emit=function(b,a,c){if((c="string"===typeof c||"number"===typeof c?String(c):null)&&c.length){if(this.receivedIDs.hasOwnProperty(c))return;this.receivedIDs[c]=!0}var e={id:c,name:b,origin:this.origin,
timestamp:(new Date).getTime(),payload:a},d=this;this._transaction(function(){var c=f.getItem(j)||"[]",c=[c.substring(0,c.length-1),"[]"===c?"":",",JSON.stringify(e),"]"].join("");f.setItem(j,c);d.trigger(b,a);window.setTimeout(function(){d._cleanup_emit()},50)})};d.prototype.bind=function(b,a){for(var c=0;c<d.bindings.length;c++){var e=d.bindings[c].factory(b,a||null,this);e&&this.bindings.push(e)}};d.prototype.emit=function(b,a){this._emit.apply(this,arguments);this._trigger("emit",b,a)};d.prototype.once=
function(b,a,c){if(d.supported){var e=this;this._transaction(function(){var d=JSON.parse(f.getItem(k)||"{}");e._once_expired(b,d)&&(d[b]={},d[b].timestamp=(new Date).getTime(),"number"===typeof c&&(d[b].ttl=1E3*c),f.setItem(k,JSON.stringify(d)),a(),window.setTimeout(function(){e._cleanup_once()},50))})}};i.extend(d.prototype,g.prototype);d.bindings=[];d.supported="undefined"!==typeof f;var j="intercom",k="intercom_once",l="intercom_lock",t=5E4,u=36E5;d.destroy=function(){f.removeItem(l);f.removeItem(j);
f.removeItem(k)};var q=null;d.getInstance=function(){q||(q=new d);return q};var r=function(b,a,c){a=i.extend({id:null,send:!0,receive:!0},a);if(a.receive){var d=[],f=function(f){-1===d.indexOf(f)&&(d.push(f),b.on(f,function(b){var d="function"===typeof a.id?a.id(f,b):null,e="function"===typeof a.receive?a.receive(f,b):!0;(e||"boolean"!==typeof e)&&c._emit(f,b,d)}))},g;for(g in c.handlers)for(var h=0;h<c.handlers[g].length;h++)f(g,c.handlers[g][h]);c._on("on",f)}a.send&&c._on("emit",function(c,d){var e=
"function"===typeof a.send?a.send(c,d):!0;(e||"boolean"!==typeof e)&&b.emit(c,d)})};r.factory=function(b,a,c){return"undefined"===typeof b.socket?!1:new r(b,a,c)};d.bindings.push(r);return d};