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function(t,e,r){"use strict";function n(t,e,r){return e in t?Object.defineProperty(t,e,{value:r,enumerable:!0,configurable:!0,writable:!0}):t[e]=r,t}var i=r(573750),o=r(587321),a=r(882270),s=r(116740),u=r(797686),c=r(670200),l=s.Map,f={subtree:!0,characterData:!0,childList:!0,characterDataOldValue:!1,attributes:!1},p=i.isBrowser("IE <= 11");t.exports=function(){function t(t){var e=this;n(this,"observer",void 0),n(this,"container",void 0),n(this,"mutations",void 0),n(this,"onCharData",void 0),this.container=t,this.mutations=l();var r=a(t);r.MutationObserver&&!p?this.observer=new r.MutationObserver(function(t){return e.registerMutations(t)}):this.onCharData=function(t){t.target instanceof Node||u(!1),e.registerMutation({type:"characterData",target:t.target})}}var e=t.prototype;return e.start=function(){this.observer?this.observer.observe(this.container,f):this.container.addEventListener("DOMCharacterDataModified",this.onCharData)},e.stopAndFlushMutations=function(){var t=this.observer;t?(this.registerMutations(t.takeRecords()),t.disconnect()):this.container.removeEventListener("DOMCharacterDataModified",this.onCharData);var e=this.mutations;return this.mutations=l(),e},e.registerMutations=function(t){for(var e=0;e<t.length;e++)this.registerMutation(t[e])},e.getMutationTextContent=function(t){var e=t.type,r=t.target,n=t.removedNodes;if("characterData"===e){if(""!==r.textContent)return p?r.textContent.replace("\n",""):r.textContent}else if("childList"===e){if(n&&n.length)return"";else if(""!==r.textContent)return r.textContent}return null},e.registerMutation=function(t){var e=this.getMutationTextContent(t);if(null!=e){var r=c(o(t.target));this.mutations=this.mutations.set(r,e)}},t}()}