vigneshshanmugam

vigneshshanmugam

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

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

vigneshshanmugam

(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

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

vigneshshanmugam

const observer = new PerformanceObserver(function(list) {
  const entries = list.getEntries();
  // An example entry looks something like this
   const exampleEntry = {
    name: "same-origin-descendant",
    entryType: "longtask",
    startTime: 1023.40999995591,
    duration: 187.19000002602115,
    attribution: [
      {

vigneshshanmugam

// From graphql-js, https://github.com/graphql/graphql-js/blob/499a75939f70c4863d44149371d6a99d57ff7c35/src/jsutils/isPromise.js#L18
function isPromiseWithBoxing(value) {
  return Boolean(value && typeof value.then === "function");
}
// Tailor source -  https://github.com/zalando/tailor/blob/0d930d30d6ea3936985ecf3714a3d93fa755b628/src/pipe.js#L53
function isPromiseWithoutBoxing(value) {
  return (
    value != null &&
    typeof value === "object" &&
    typeof value.then === "function"

vigneshshanmugam

'use strict';

(function(Pipe, perf) {
    if (Pipe === undefined) {
        return;
    }
    if (!('mark' in perf && 'measure' in perf)) {
        return;
    }
    var fragmentMap = Object.create(null);

vigneshshanmugam

Before

Code

const types = {};
const typeSymbols = t => {
  // don't recompute
  if (Object.keys(types).length < 1) {
    t.TYPES.forEach(type => {
      types[type] = Symbol.for(type);

vigneshshanmugam

Keybase proof

I hereby claim:

• I am vigneshshanmugam on github.
• I am vigneshh (https://keybase.io/vigneshh) on keybase.
• I have a public key ASDHqWA__CuARSBArXZPUCAKHYbFuzu60qTjPjVcYvBHHgo

To claim this, I am signing this object: