"use strict";(self.webpackChunkwebsite=self.webpackChunkwebsite||[]).push([[40880],{3905:(e,t,r)=>{r.d(t,{Zo:()=>s,kt:()=>f});var n=r(67294);function a(e,t,r){return t in e?Object.defineProperty(e,t,{value:r,enumerable:!0,configurable:!0,writable:!0}):e[t]=r,e}function i(e,t){var r=Object.keys(e);if(Object.getOwnPropertySymbols){var n=Object.getOwnPropertySymbols(e);t&&(n=n.filter((function(t){return Object.getOwnPropertyDescriptor(e,t).enumerable}))),r.push.apply(r,n)}return r}function o(e){for(var t=1;t<arguments.length;t++){var r=null!=arguments[t]?arguments[t]:{};t%2?i(Object(r),!0).forEach((function(t){a(e,t,r[t])})):Object.getOwnPropertyDescriptors?Object.defineProperties(e,Object.getOwnPropertyDescriptors(r)):i(Object(r)).forEach((function(t){Object.defineProperty(e,t,Object.getOwnPropertyDescriptor(r,t))}))}return e}function p(e,t){if(null==e)return{};var r,n,a=function(e,t){if(null==e)return{};var r,n,a={},i=Object.keys(e);for(n=0;n<i.length;n++)r=i[n],t.indexOf(r)>=0||(a[r]=e[r]);return a}(e,t);if(Object.getOwnPropertySymbols){var i=Object.getOwnPropertySymbols(e);for(n=0;n<i.length;n++)r=i[n],t.indexOf(r)>=0||Object.prototype.propertyIsEnumerable.call(e,r)&&(a[r]=e[r])}return a}var l=n.createContext({}),u=function(e){var t=n.useContext(l),r=t;return e&&(r="function"==typeof e?e(t):o(o({},t),e)),r},s=function(e){var t=u(e.components);return n.createElement(l.Provider,{value:t},e.children)},c={inlineCode:"code",wrapper:function(e){var t=e.children;return n.createElement(n.Fragment,{},t)}},m=n.forwardRef((function(e,t){var r=e.components,a=e.mdxType,i=e.originalType,l=e.parentName,s=p(e,["components","mdxType","originalType","parentName"]),m=u(r),f=a,v=m["".concat(l,".").concat(f)]||m[f]||c[f]||i;return r?n.createElement(v,o(o({ref:t},s),{},{components:r})):n.createElement(v,o({ref:t},s))}));function f(e,t){var r=arguments,a=t&&t.mdxType;if("string"==typeof e||a){var i=r.length,o=new Array(i);o[0]=m;var p={};for(var l in t)hasOwnProperty.call(t,l)&&(p[l]=t[l]);p.originalType=e,p.mdxType="string"==typeof e?e:a,o[1]=p;for(var u=2;u<i;u++)o[u]=r[u];return n.createElement.apply(null,o)}return n.createElement.apply(null,r)}m.displayName="MDXCreateElement"},21910:(e,t,r)=>{r.r(t),r.d(t,{assets:()=>l,contentTitle:()=>o,default:()=>c,frontMatter:()=>i,metadata:()=>p,toc:()=>u});var n=r(87462),a=(r(67294),r(3905));const i={sidebar_label:"EventEmitter.listenerCount"},o="EventEmitter.listenerCount() method",p={unversionedId:"api/puppeteer.eventemitter.listenercount",id:"version-15.3.0/api/puppeteer.eventemitter.listenercount",title:"EventEmitter.listenerCount() method",description:"Gets the number of listeners for a given event.",source:"@site/versioned_docs/version-15.3.0/api/puppeteer.eventemitter.listenercount.md",sourceDirName:"api",slug:"/api/puppeteer.eventemitter.listenercount",permalink:"/api/puppeteer.eventemitter.listenercount",draft:!1,tags:[],version:"15.3.0",frontMatter:{sidebar_label:"EventEmitter.listenerCount"},sidebar:"sidebar",previous:{title:"EventEmitter.emit",permalink:"/api/puppeteer.eventemitter.emit"},next:{title:"EventEmitter.off",permalink:"/api/puppeteer.eventemitter.off"}},l={},u=[{value:"Parameters",id:"parameters",level:2}],s={toc:u};function c(e){let{components:t,...r}=e;return(0,a.kt)("wrapper",(0,n.Z)({},s,r,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("h1",{id:"eventemitterlistenercount-method"},"EventEmitter.listenerCount() method"),(0,a.kt)("p",null,"Gets the number of listeners for a given event."),(0,a.kt)("p",null,(0,a.kt)("strong",{parentName:"p"},"Signature:")),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-typescript"},"class EventEmitter {\n  listenerCount(event: EventType): number;\n}\n")),(0,a.kt)("h2",{id:"parameters"},"Parameters"),(0,a.kt)("table",null,(0,a.kt)("thead",{parentName:"table"},(0,a.kt)("tr",{parentName:"thead"},(0,a.kt)("th",{parentName:"tr",align:null},"Parameter"),(0,a.kt)("th",{parentName:"tr",align:null},"Type"),(0,a.kt)("th",{parentName:"tr",align:null},"Description"))),(0,a.kt)("tbody",{parentName:"table"},(0,a.kt)("tr",{parentName:"tbody"},(0,a.kt)("td",{parentName:"tr",align:null},"event"),(0,a.kt)("td",{parentName:"tr",align:null},(0,a.kt)("a",{parentName:"td",href:"/api/puppeteer.eventtype"},"EventType")),(0,a.kt)("td",{parentName:"tr",align:null},"the event to get the listener count for")))),(0,a.kt)("p",null,(0,a.kt)("strong",{parentName:"p"},"Returns:")),(0,a.kt)("p",null,"number"),(0,a.kt)("p",null,"the number of listeners bound to the given event"))}c.isMDXComponent=!0}}]);