vigneshshanmugam

const profiler = await performance.profile({
  categories: ["js"],
  sampleInterval: 10
});
const trace = await profiler.stop();
// Example trace looks something like this
{
  "frames": [
    {
      "column": 4,

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(async()=>{let t=1,e=[];const n=new PerformanceObserver(n=>{const r=n.getEntries();for(const n of r)e.push({id:`${t}`,type:n.entryType,name:n.name,start:Math.round(n.startTime),end:Math.round(n.startTime+n.duration),duration:Math.round(n.duration)}),t++});n.observe({type:"longtask",buffered:!0});const r=await performance.profile({categories:["js"],sampleInterval:1,sampleBufferSize:Number.MAX_SAFE_INTEGER});async function o(){n.disconnect();const t=function(t){const n={};for(const r of t.samples){const o=Math.round(r.timestamp);for(const a of e){const{start:e,name:c,type:i,id:u,end:f,duration:d}=a;if(o>=e&&o<=f){n[u]||(n[u]={name:c,type:i,start:e,end:f,duration:d,culprits:[]});const a=s(t,r.stackId);n[u].culprits.push({time:o,stackId:r.stackId,stack:a})}}}return function(t,e){Object.keys(t).forEach(n=>{const{culprits:r,start:o,end:a}=t[n],s=[];let i=o;for(let t=0,n=1;n<r.length+1;t++,n++){let o=r[t],u=r[n];for(;u&&u.stackId===o.stackId;)n++,o=r[++t],u=r[n];const f=n===r.length,d=f?o.time-i+(a-o.time):o.time-i;

vigneshshanmugam

It is recommended to run Synthetics tests using the official Heartbeat docker image which contains all the required dependencies and also the chomium browser which is required for running tests.

Prerequisites:

• Have Node.js installed on the system which comes along with Node Package Manager(NPM).

For running Synthetics outside of docker environment, we need the follow the below steps.

1. Install playwright chromium NPM library which will install the necessary playwright dependency and also download the

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pw:protocol SEND ► {"id":1,"method":"Browser.getVersion"}"""`

pw:protocol ◀ RECV {"id":1,"result":{"protocolVersion":"1.3","product":"HeadlessChrome/112.0.5615.29","revision":"@8a59304c62e066962363d2fd8edd8e7b459c42bd","userAgent":"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/112.0.5615.29 Safari/537.36","jsVersion":"11.2.214.7"}}"""`

pw:protocol SEND ► {"id":2,"method":"Target.setAutoAttach","params":{"autoAttach":true,"waitForDebuggerOnStart":true,"flatten":true}}"""

pw:protocol ◀ RECV {"id":2,"result":{}}"""`

pw:protocol SEND ► {"id":3,"method":"Target.attachToBrowserTarget"}"""`

vigneshshanmugam