perfops-rom - npm Package Compare versions

Comparing version 1.1.1 to 1.1.2

dist/rom.js

 "use strict";
 
 (function (Promise) {
-  var QUEUE_LIMIT = 2;
+  var API_URL = 'https://devnull.perfops.net/rum/v1';
+  var RESOURCES_URL = 'https://api.perfops.net/rum-cdn.php';
+  var RESOURCES_TTL = 5 * 60 * 1000; // Resources list TTL in the LocalStorage
 
+  var REPEAT_DELAY = 60 * 1000; // How often the script will measure CDN performance while user staying on the same page
+
+  var QUEUE_LIMIT = 3;
+
   var _ref = function () {
@@ -19,7 +25,7 @@ /* minified */
   var clientKey = window.rum ? window.rum.key : undefined;
-  var globalStoreMeta = null;
-  var globalResults = [];
-  var resolvers = [];
-  var done = false;
 
+  function formatTiming(value) {
+    return Math.min(0, Number(value.toFixed(2)));
+  }
+
   function fetch(url) {
@@ -78,3 +84,9 @@ var _ref2 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
       };
+      var dnsLookupTime = formatTiming(timing.domainLookupEnd - timing.domainLookupStart);
+      var tcpTime = formatTiming(timing.connectEnd - timing.connectStart); // In Firefox if connection was cached - secure connection time is calculated
+      // as a difference between the page is loaded and current request execution started
+      // which is equal to the time spent on the page. That's why we check if actual tcp connection time is calculated.
 
+      var sslTime = tcpTime > 0 ? formatTiming(timing.connectEnd - timing.secureConnectionStart) : 0;
+
       if (xhr.status >= 200 && xhr.status < 300) {
@@ -85,3 +97,5 @@ // Add success response measurements
           time: Number((timing.responseEnd - timing.requestStart).toFixed(2)),
-          dnsLookupTime: Number((timing.domainLookupEnd - timing.domainLookupStart).toFixed(2)),
+          dnsLookupTime: dnsLookupTime,
+          tcpTime: tcpTime,
+          sslTime: sslTime,
           headers: xhr.getAllResponseHeaders()
@@ -95,3 +109,5 @@ });
           up: 0,
-          dnsLookupTime: Number((timing.domainLookupEnd - timing.domainLookupStart).toFixed(2)),
+          dnsLookupTime: dnsLookupTime,
+          tcpTime: tcpTime,
+          sslTime: sslTime,
           headers: xhr.getAllResponseHeaders()
@@ -111,4 +127,110 @@ });
   function fetchResourceList() {
-    return fetch('https://api.perfops.net/rum-cdn.php').then(function (xhr) {
+    var key = 'perfops-rum-resources';
+    var resources = JSON.parse(window.localStorage.getItem(key));
+
+    if (resources && resources.expiry > Date.now()) {
+      return Promise.resolve(resources.data);
+    }
+
+    return fetch(RESOURCES_URL).then(function (xhr) {
       return JSON.parse(xhr.response);
+    }).then(function (response) {
+      if (!response || !response.data || !response.data.length) {
+        throw new Error('Empty response.data');
+      }
+
+      window.localStorage.setItem(key, JSON.stringify({
+        data: response.data,
+        expiry: Date.now() + RESOURCES_TTL
+      }));
+      return response.data;
+    }).catch(function () {
+      // eslint-disable-next-line
+      return {
+        "data": [{
+          "id": 6,
+          "cdnUrl": "https://perfops-ade2.kxcdn.com/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 13,
+          "cdnUrl": "https://m9d7v5r2.map2.ssl.hwcdn.net/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 7,
+          "cdnUrl": "https://googlecdn.perfstack.net/5002b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 1,
+          "cdnUrl": "https://kgmni17536myjst.belugacdn.link/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 11,
+          "cdnUrl": "https://perfops.b-cdn.net/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 5,
+          "cdnUrl": "https://d2axgrpnciinw7.cloudfront.net/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 12,
+          "cdnUrl": "https://cdn.jsdelivr.net/gh/jimaek/js-test@1.1/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 2,
+          "cdnUrl": "https://ovhcdn.perfstack.net/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 22,
+          "cdnUrl": "https://09d3da8545e855ce.cdn.gocache.net/500b-bench.jpg",
+          "p": "0"
+        }, {
+          "id": 17,
+          "cdnUrl": "https://edgecast.perfstack.net/8086B5F/bench/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 29,
+          "cdnUrl": "https://25748s.ha.azioncdn.net/500b-bench.jpg",
+          "p": "0"
+        }, {
+          "id": 8,
+          "cdnUrl": "https://perfops.gcdn.co/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 24,
+          "cdnUrl": "https://img-cdnperf.mncdn.com/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 14,
+          "cdnUrl": "https://perfops.r.worldssl.net/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 20,
+          "cdnUrl": "https://cdnperf.cachefly.net/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 9,
+          "cdnUrl": "https://1933886249.rsc.cdn77.org/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 15,
+          "cdnUrl": "https://cdnperf-rum.cdnetworks.net/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 4,
+          "cdnUrl": "https://fastly.jsdelivr.net/gh/jimaek/js-test@1.1/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 18,
+          "cdnUrl": "https://azure-perfops.azureedge.net/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 3,
+          "cdnUrl": "https://perfops.perfstack.cf-china.info/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 10,
+          "cdnUrl": "https://akamai.perfstack.net/500b-bench.jpg",
+          "p": "1"
+        }]
+      };
     });
@@ -151,100 +273,4 @@ } // eslint-disable-next-line no-unused-vars
   function run() {
-    setTimeout(function () {
+    var processor = function processor() {
       fetchResourceList().then(function (response) {
-        if (!response || !response.data || !response.data.length) {
-          throw new Error('Empty response.data');
-        }
-
-        return response;
-      }).catch(function () {
-        // eslint-disable-next-line
-        return {
-          "data": [{
-            "id": 13,
-            "cdnUrl": "https://m9d7v5r2.map2.ssl.hwcdn.net/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 10,
-            "cdnUrl": "https://akamai.perfstack.net/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 24,
-            "cdnUrl": "https://img-cdnperf.mncdn.com/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 14,
-            "cdnUrl": "https://perfops.r.worldssl.net/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 22,
-            "cdnUrl": "https://09d3da8545e855ce.cdn.gocache.net/500b-bench.jpg",
-            "p": "0"
-          }, {
-            "id": 29,
-            "cdnUrl": "https://25748s.ha.azioncdn.net/500b-bench.jpg",
-            "p": "0"
-          }, {
-            "id": 1,
-            "cdnUrl": "https://kgmni17536myjst.belugacdn.link/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 17,
-            "cdnUrl": "https://edgecast.perfstack.net/8086B5F/bench/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 9,
-            "cdnUrl": "https://1933886249.rsc.cdn77.org/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 15,
-            "cdnUrl": "https://cdnperf-rum.cdnetworks.net/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 12,
-            "cdnUrl": "https://cdn.jsdelivr.net/gh/jimaek/js-test@1.1/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 5,
-            "cdnUrl": "https://d2axgrpnciinw7.cloudfront.net/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 8,
-            "cdnUrl": "https://perfops.gcdn.co/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 3,
-            "cdnUrl": "https://perfops.perfstack.cf-china.info/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 7,
-            "cdnUrl": "https://googlecdn.perfstack.net/5002b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 2,
-            "cdnUrl": "https://ovhcdn.perfstack.net/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 18,
-            "cdnUrl": "https://azure-perfops.azureedge.net/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 4,
-            "cdnUrl": "https://fastly.jsdelivr.net/gh/jimaek/js-test@1.1/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 6,
-            "cdnUrl": "https://perfops-ade2.kxcdn.com/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 20,
-            "cdnUrl": "https://cdnperf.cachefly.net/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 11,
-            "cdnUrl": "https://perfops.b-cdn.net/500b-bench.jpg",
-            "p": "1"
-          }]
-        };
-      }).then(function (response) {
-        var results = [];
         var metadata = {
@@ -255,49 +281,54 @@ ua: navigator.userAgent,
         };
-        var tooSlow = 0;
-        var down = 0;
-        return pMapSeries(response.data, function (resource) {
-          return fetchResource(resource).then(function (data) {
-            globalResults.push(data);
 
-            if (!data.up) {
-              down++;
-            } else if (data.time > 2000) {
-              tooSlow++;
-            } // time must be between 3 and 3000 ms
-            // if 2 or more providers in one batch fail, drop all results
+        var chunkedData = function (array, n) {
+          return Array.from(Array(Math.ceil(array.length / n)), function (_, i) {
+            return array.slice(i * n, i * n + n);
+          });
+        }(response, QUEUE_LIMIT);
 
+        return pMapSeries(chunkedData, function (resources) {
+          var results = [];
+          var tooSlow = 0;
+          var down = 0;
+          performance.clearResourceTimings();
+          return Promise.all(resources.map(function (resource) {
+            return fetchResource(resource).then(function (data) {
+              if (!data.up) {
+                down++;
+              } else if (data.time > 2000) {
+                tooSlow++;
+              } // time must be between 3 and 3000 ms
+              // if 2 or more providers in one batch fail, drop all results
 
-            if (down > 1 || data.up && (data.time < 3 || data.time > 3000)) {
-              return;
-            }
 
-            if (results.push(data) >= QUEUE_LIMIT) {
-              down = 0;
+              if (down > 1 || data.up && (data.time < 3 || data.time > 3000)) {
+                return;
+              }
 
-              if (tooSlow < QUEUE_LIMIT) {
-                tooSlow = 0;
-              } else {
-                tooSlow = 0;
-                return results.splice(0, results.length);
+              if (results.push(data) >= QUEUE_LIMIT) {
+                down = 0;
+
+                if (tooSlow < QUEUE_LIMIT) {
+                  tooSlow = 0;
+                } else {
+                  tooSlow = 0;
+                  return results.splice(0, results.length);
+                }
+
+                return storeResults(metadata, results.splice(0, results.length));
               }
-
-              return storeResults(metadata, results.splice(0, results.length));
-            }
-          });
-        }).then(function () {
-          if (down <= 1 && results.length) {
-            return storeResults(metadata, results);
-          }
+            });
+          }));
         });
       }).then(logInfo, logError).then(function () {
-        done = true;
-        resolvers.forEach(function (resolve) {
-          return resolve();
-        });
-      }); // eslint-disable-next-line comma-dangle
-    }, 1000);
+        return setTimeout(processor, REPEAT_DELAY);
+      });
+    }; // eslint-disable-next-line comma-dangle
+
+
+    setTimeout(processor, 1000);
   }
 
   function storeResults(metadata, data) {
-    return fetch('https://devnull.perfops.net/rum/v1', {
+    return fetch(API_URL, {
       data: JSON.stringify({
@@ -308,4 +339,2 @@ metadata: metadata,
       method: 'POST'
-    }).then(function (request) {
-      globalStoreMeta = JSON.parse(request.response);
     }).catch(logError);
@@ -323,6 +352,27 @@ }
   onLoad(function () {
-    if (typeof window.performance === 'undefined') {
+    /**
+     * Try to prevent loading the script at all for the major bots/crawlers.
+     * This is the first line defence against serving our scripts to crawlers.
+     * Warns in console if we aren't loading, to aid support.
+     **/
+    var knownBots = ['bot', 'headless', 'google', 'baidu', 'bing', 'msn', 'duckduckbot', 'teoma', 'slurp', 'yandex', 'phantomjs', 'pingdom', 'ahrefsbot'];
+    var botString = knownBots.join('|');
+    var botTestRegex = new RegExp(botString, 'i');
+    var isProbablyBot = botTestRegex.test(window.navigator.userAgent);
+
+    if (isProbablyBot) {
+      console.warn('PerfOps RUM not launching due to suspicious userAgent:', window.navigator.userAgent);
       return;
     }
 
+    if (typeof window.performance === 'undefined') {
+      return;
+    } // Clear performance API entries buffer when full
+
+
+    performance.onresourcetimingbufferfull = function () {
+      logInfo('clear performance resource buffer');
+      performance.clearResourceTimings();
+    };
+
     if (typeof Promise === 'function') {
@@ -337,26 +387,2 @@ return run();
   });
-  window.perfopsRumJs = {
-    getResults: function getResults() {
-      return new Promise(function (resolve) {
-        if (done) {
-          return resolve(globalResults);
-        }
-
-        resolvers.push(function () {
-          return resolve(globalResults);
-        });
-      });
-    },
-    getStoreMeta: function getStoreMeta() {
-      return new Promise(function (resolve) {
-        if (done) {
-          return resolve(globalStoreMeta);
-        }
-
-        resolvers.push(function () {
-          return resolve(globalStoreMeta);
-        });
-      });
-    }
-  };
 })(window.Promise);

dist/rom.min.js

@@ -1,1 +0,1 @@
-"use strict";!function(u){var n,t=-1!==function(){}.toString().indexOf("minified")?{logInfo:console.log,logError:console.error}:{logInfo:function(){},logError:function(){}},e=t.logInfo,a=t.logError,c=window.rum?window.rum.key:void 0,r=null,i=[],o=[],d=!1;function p(r,n){var t=1<arguments.length&&void 0!==n?n:{},e=t.cb,o=void 0===e?function(){}:e,c=t.data,i=t.method,d=void 0===i?"GET":i,p=t.timeout,s=void 0===p?3e3:p;return new u(function(n,t){var e=new XMLHttpRequest;e.onload=function(){return n(e)},e.onerror=e.ontimeout=function(){a(e),t(new Error("Status ".concat(e.status,". Response: ").concat(e.statusText)))},e.open(d,r),e.timeout=s,o(e),e.send(c)})}function s(){setTimeout(function(){p("https://api.perfops.net/rum-cdn.php").then(function(n){return JSON.parse(n.response)}).then(function(n){if(!n||!n.data||!n.data.length)throw new Error("Empty response.data");return n}).catch(function(){return{data:[{id:13,cdnUrl:"https://m9d7v5r2.map2.ssl.hwcdn.net/500b-bench.jpg",p:"1"},{id:10,cdnUrl:"https://akamai.perfstack.net/500b-bench.jpg",p:"1"},{id:24,cdnUrl:"https://img-cdnperf.mncdn.com/500b-bench.jpg",p:"1"},{id:14,cdnUrl:"https://perfops.r.worldssl.net/500b-bench.jpg",p:"1"},{id:22,cdnUrl:"https://09d3da8545e855ce.cdn.gocache.net/500b-bench.jpg",p:"0"},{id:29,cdnUrl:"https://25748s.ha.azioncdn.net/500b-bench.jpg",p:"0"},{id:1,cdnUrl:"https://kgmni17536myjst.belugacdn.link/500b-bench.jpg",p:"1"},{id:17,cdnUrl:"https://edgecast.perfstack.net/8086B5F/bench/500b-bench.jpg",p:"1"},{id:9,cdnUrl:"https://1933886249.rsc.cdn77.org/500b-bench.jpg",p:"1"},{id:15,cdnUrl:"https://cdnperf-rum.cdnetworks.net/500b-bench.jpg",p:"1"},{id:12,cdnUrl:"https://cdn.jsdelivr.net/gh/jimaek/js-test@1.1/500b-bench.jpg",p:"1"},{id:5,cdnUrl:"https://d2axgrpnciinw7.cloudfront.net/500b-bench.jpg",p:"1"},{id:8,cdnUrl:"https://perfops.gcdn.co/500b-bench.jpg",p:"1"},{id:3,cdnUrl:"https://perfops.perfstack.cf-china.info/500b-bench.jpg",p:"1"},{id:7,cdnUrl:"https://googlecdn.perfstack.net/5002b-bench.jpg",p:"1"},{id:2,cdnUrl:"https://ovhcdn.perfstack.net/500b-bench.jpg",p:"1"},{id:18,cdnUrl:"https://azure-perfops.azureedge.net/500b-bench.jpg",p:"1"},{id:4,cdnUrl:"https://fastly.jsdelivr.net/gh/jimaek/js-test@1.1/500b-bench.jpg",p:"1"},{id:6,cdnUrl:"https://perfops-ade2.kxcdn.com/500b-bench.jpg",p:"1"},{id:20,cdnUrl:"https://cdnperf.cachefly.net/500b-bench.jpg",p:"1"},{id:11,cdnUrl:"https://perfops.b-cdn.net/500b-bench.jpg",p:"1"}]}}).then(function(n){var t=[],e={ua:navigator.userAgent,hostname:window.location.hostname,client:c},r=0,o=0;return function(n,r){return n.reduce(function(n,e){return n.then(function(t){return r(e).then(function(n){return t.push(n),t})})},u.resolve([]))}(n.data,function(n){return function(r){var o="".concat(r.cdnUrl,"?t=").concat(Date.now());return p(o).then(function(n){var t=performance.getEntriesByName(o)[0],e={id:r.id};return 200<=n.status&&n.status<300&&(e=Object.assign({},e,{up:1,time:Number((t.responseEnd-t.requestStart).toFixed(2)),dnsLookupTime:Number((t.domainLookupEnd-t.domainLookupStart).toFixed(2)),headers:n.getAllResponseHeaders()})),300<=n.status&&n.status<=500&&(e=Object.assign({},e,{up:0,dnsLookupTime:Number((t.domainLookupEnd-t.domainLookupStart).toFixed(2)),headers:n.getAllResponseHeaders()})),e}).catch(function(){return{id:r.id,up:0}})}(n).then(function(n){if(i.push(n),n.up?2e3<n.time&&r++:o++,!(1<o||n.up&&(n.time<3||3e3<n.time)))return 2<=t.push(n)?(o=0,r<2?(r=0,h(e,t.splice(0,t.length))):(r=0,t.splice(0,t.length))):void 0})}).then(function(){if(o<=1&&t.length)return h(e,t)})}).then(e,a).then(function(){d=!0,o.forEach(function(n){return n()})})},1e3)}function h(n,t){return p("https://devnull.perfops.net/rum/v1",{data:JSON.stringify({metadata:n,data:t}),method:"POST"}).then(function(n){r=JSON.parse(n.response)}).catch(a)}n=function(){if(void 0!==window.performance)return"function"==typeof u?s():void function(n,t){var e,r=document.createElement("script");r.onreadystatechange=r.onload=function(){e||t(),e=!0},r.setAttribute("src",n),document.body.appendChild(r)}("https://cdn.jsdelivr.net/npm/es6-promise@4.2.4/dist/es6-promise.min.js",function(){u=window.ES6Promise,s()})},"complete"===document.readyState?n():window.addEventListener("load",n),window.perfopsRumJs={getResults:function(){return new u(function(n){if(d)return n(i);o.push(function(){return n(i)})})},getStoreMeta:function(){return new u(function(n){if(d)return n(r);o.push(function(){return n(r)})})}}}(window.Promise);
+"use strict";!function(a){var n,c="https://devnull.perfops.net/rum/v1",t="https://api.perfops.net/rum-cdn.php",r=3e5,e=-1!==function(){}.toString().indexOf("minified")?{logInfo:console.log,logError:console.error}:{logInfo:function(){},logError:function(){}},o=e.logInfo,u=e.logError,i=window.rum?window.rum.key:void 0;function d(n){return Math.min(0,Number(n.toFixed(2)))}function p(r,n){var e=1<arguments.length&&void 0!==n?n:{},t=e.cb,o=void 0===t?function(){}:t,c=e.data,i=e.method,s=void 0===i?"GET":i,d=e.timeout,p=void 0===d?3e3:d;return new a(function(n,e){var t=new XMLHttpRequest;t.onload=function(){return n(t)},t.onerror=t.ontimeout=function(){u(t),e(new Error("Status ".concat(t.status,". Response: ").concat(t.statusText)))},t.open(s,r),t.timeout=p,o(t),t.send(c)})}function s(){setTimeout(function n(){(function(){var e="perfops-rum-resources",n=JSON.parse(window.localStorage.getItem(e));return n&&n.expiry>Date.now()?a.resolve(n.data):p(t).then(function(n){return JSON.parse(n.response)}).then(function(n){if(!n||!n.data||!n.data.length)throw new Error("Empty response.data");return window.localStorage.setItem(e,JSON.stringify({data:n.data,expiry:Date.now()+r})),n.data}).catch(function(){return{data:[{id:6,cdnUrl:"https://perfops-ade2.kxcdn.com/500b-bench.jpg",p:"1"},{id:13,cdnUrl:"https://m9d7v5r2.map2.ssl.hwcdn.net/500b-bench.jpg",p:"1"},{id:7,cdnUrl:"https://googlecdn.perfstack.net/5002b-bench.jpg",p:"1"},{id:1,cdnUrl:"https://kgmni17536myjst.belugacdn.link/500b-bench.jpg",p:"1"},{id:11,cdnUrl:"https://perfops.b-cdn.net/500b-bench.jpg",p:"1"},{id:5,cdnUrl:"https://d2axgrpnciinw7.cloudfront.net/500b-bench.jpg",p:"1"},{id:12,cdnUrl:"https://cdn.jsdelivr.net/gh/jimaek/js-test@1.1/500b-bench.jpg",p:"1"},{id:2,cdnUrl:"https://ovhcdn.perfstack.net/500b-bench.jpg",p:"1"},{id:22,cdnUrl:"https://09d3da8545e855ce.cdn.gocache.net/500b-bench.jpg",p:"0"},{id:17,cdnUrl:"https://edgecast.perfstack.net/8086B5F/bench/500b-bench.jpg",p:"1"},{id:29,cdnUrl:"https://25748s.ha.azioncdn.net/500b-bench.jpg",p:"0"},{id:8,cdnUrl:"https://perfops.gcdn.co/500b-bench.jpg",p:"1"},{id:24,cdnUrl:"https://img-cdnperf.mncdn.com/500b-bench.jpg",p:"1"},{id:14,cdnUrl:"https://perfops.r.worldssl.net/500b-bench.jpg",p:"1"},{id:20,cdnUrl:"https://cdnperf.cachefly.net/500b-bench.jpg",p:"1"},{id:9,cdnUrl:"https://1933886249.rsc.cdn77.org/500b-bench.jpg",p:"1"},{id:15,cdnUrl:"https://cdnperf-rum.cdnetworks.net/500b-bench.jpg",p:"1"},{id:4,cdnUrl:"https://fastly.jsdelivr.net/gh/jimaek/js-test@1.1/500b-bench.jpg",p:"1"},{id:18,cdnUrl:"https://azure-perfops.azureedge.net/500b-bench.jpg",p:"1"},{id:3,cdnUrl:"https://perfops.perfstack.cf-china.info/500b-bench.jpg",p:"1"},{id:10,cdnUrl:"https://akamai.perfstack.net/500b-bench.jpg",p:"1"}]}})})().then(function(n){var t,o={ua:navigator.userAgent,hostname:window.location.hostname,client:i};return function(n,r){return n.reduce(function(n,t){return n.then(function(e){return r(t).then(function(n){return e.push(n),e})})},a.resolve([]))}((t=n,Array.from(Array(Math.ceil(t.length/3)),function(n,e){return t.slice(3*e,3*e+3)})),function(n){var e=[],t=0,r=0;return performance.clearResourceTimings(),a.all(n.map(function(n){return function(i){var s="".concat(i.cdnUrl,"?t=").concat(Date.now());return p(s).then(function(n){var e=performance.getEntriesByName(s)[0],t={id:i.id},r=d(e.domainLookupEnd-e.domainLookupStart),o=d(e.connectEnd-e.connectStart),c=0<o?d(e.connectEnd-e.secureConnectionStart):0;return 200<=n.status&&n.status<300&&(t=Object.assign({},t,{up:1,time:Number((e.responseEnd-e.requestStart).toFixed(2)),dnsLookupTime:r,tcpTime:o,sslTime:c,headers:n.getAllResponseHeaders()})),300<=n.status&&n.status<=500&&(t=Object.assign({},t,{up:0,dnsLookupTime:r,tcpTime:o,sslTime:c,headers:n.getAllResponseHeaders()})),t}).catch(function(){return{id:i.id,up:0}})}(n).then(function(n){if(n.up?2e3<n.time&&t++:r++,!(1<r||n.up&&(n.time<3||3e3<n.time)))return 3<=e.push(n)?(r=0,t<3?(t=0,function(n,e){return p(c,{data:JSON.stringify({metadata:n,data:e}),method:"POST"}).catch(u)}(o,e.splice(0,e.length))):(t=0,e.splice(0,e.length))):void 0})}))})}).then(o,u).then(function(){return setTimeout(n,6e4)})},1e3)}n=function(){var n=["bot","headless","google","baidu","bing","msn","duckduckbot","teoma","slurp","yandex","phantomjs","pingdom","ahrefsbot"].join("|");if(new RegExp(n,"i").test(window.navigator.userAgent))console.warn("PerfOps RUM not launching due to suspicious userAgent:",window.navigator.userAgent);else if(void 0!==window.performance){if(performance.onresourcetimingbufferfull=function(){o("clear performance resource buffer"),performance.clearResourceTimings()},"function"==typeof a)return s();!function(n,e){var t,r=document.createElement("script");r.onreadystatechange=r.onload=function(){t||e(),t=!0},r.setAttribute("src",n),document.body.appendChild(r)}("https://cdn.jsdelivr.net/npm/es6-promise@4.2.4/dist/es6-promise.min.js",function(){a=window.ES6Promise,s()})}},"complete"===document.readyState?n():window.addEventListener("load",n)}(window.Promise);

dist/rom3.js

 "use strict";
 
 (function (Promise) {
-  var QUEUE_LIMIT = 2;
+  var API_URL = 'https://devnull.perfops.net/rum/v1';
+  var RESOURCES_URL = 'https://api.perfops.net/rum-cdn.php';
+  var RESOURCES_TTL = 5 * 60 * 1000; // Resources list TTL in the LocalStorage
 
+  var REPEAT_DELAY = 60 * 1000; // How often the script will measure CDN performance while user staying on the same page
+
+  var QUEUE_LIMIT = 3;
+
   var _ref = function () {
@@ -19,7 +25,7 @@ /* minified */
   var clientKey = window.rum ? window.rum.key : undefined;
-  var globalStoreMeta = null;
-  var globalResults = [];
-  var resolvers = [];
-  var done = false;
 
+  function formatTiming(value) {
+    return Math.min(0, Number(value.toFixed(2)));
+  }
+
   function fetch(url) {
@@ -78,3 +84,9 @@ var _ref2 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
       };
+      var dnsLookupTime = formatTiming(timing.domainLookupEnd - timing.domainLookupStart);
+      var tcpTime = formatTiming(timing.connectEnd - timing.connectStart); // In Firefox if connection was cached - secure connection time is calculated
+      // as a difference between the page is loaded and current request execution started
+      // which is equal to the time spent on the page. That's why we check if actual tcp connection time is calculated.
 
+      var sslTime = tcpTime > 0 ? formatTiming(timing.connectEnd - timing.secureConnectionStart) : 0;
+
       if (xhr.status >= 200 && xhr.status < 300) {
@@ -85,3 +97,5 @@ // Add success response measurements
           time: Number((timing.responseEnd - timing.requestStart).toFixed(2)),
-          dnsLookupTime: Number((timing.domainLookupEnd - timing.domainLookupStart).toFixed(2)),
+          dnsLookupTime: dnsLookupTime,
+          tcpTime: tcpTime,
+          sslTime: sslTime,
           headers: xhr.getAllResponseHeaders()
@@ -95,3 +109,5 @@ });
           up: 0,
-          dnsLookupTime: Number((timing.domainLookupEnd - timing.domainLookupStart).toFixed(2)),
+          dnsLookupTime: dnsLookupTime,
+          tcpTime: tcpTime,
+          sslTime: sslTime,
           headers: xhr.getAllResponseHeaders()
@@ -111,4 +127,110 @@ });
   function fetchResourceList() {
-    return fetch('https://api.perfops.net/rum-cdn.php').then(function (xhr) {
+    var key = 'perfops-rum-resources';
+    var resources = JSON.parse(window.localStorage.getItem(key));
+
+    if (resources && resources.expiry > Date.now()) {
+      return Promise.resolve(resources.data);
+    }
+
+    return fetch(RESOURCES_URL).then(function (xhr) {
       return JSON.parse(xhr.response);
+    }).then(function (response) {
+      if (!response || !response.data || !response.data.length) {
+        throw new Error('Empty response.data');
+      }
+
+      window.localStorage.setItem(key, JSON.stringify({
+        data: response.data,
+        expiry: Date.now() + RESOURCES_TTL
+      }));
+      return response.data;
+    }).catch(function () {
+      // eslint-disable-next-line
+      return {
+        "data": [{
+          "id": 6,
+          "cdnUrl": "https://perfops-ade2.kxcdn.com/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 13,
+          "cdnUrl": "https://m9d7v5r2.map2.ssl.hwcdn.net/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 7,
+          "cdnUrl": "https://googlecdn.perfstack.net/5002b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 1,
+          "cdnUrl": "https://kgmni17536myjst.belugacdn.link/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 11,
+          "cdnUrl": "https://perfops.b-cdn.net/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 5,
+          "cdnUrl": "https://d2axgrpnciinw7.cloudfront.net/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 12,
+          "cdnUrl": "https://cdn.jsdelivr.net/gh/jimaek/js-test@1.1/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 2,
+          "cdnUrl": "https://ovhcdn.perfstack.net/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 22,
+          "cdnUrl": "https://09d3da8545e855ce.cdn.gocache.net/500b-bench.jpg",
+          "p": "0"
+        }, {
+          "id": 17,
+          "cdnUrl": "https://edgecast.perfstack.net/8086B5F/bench/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 29,
+          "cdnUrl": "https://25748s.ha.azioncdn.net/500b-bench.jpg",
+          "p": "0"
+        }, {
+          "id": 8,
+          "cdnUrl": "https://perfops.gcdn.co/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 24,
+          "cdnUrl": "https://img-cdnperf.mncdn.com/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 14,
+          "cdnUrl": "https://perfops.r.worldssl.net/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 20,
+          "cdnUrl": "https://cdnperf.cachefly.net/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 9,
+          "cdnUrl": "https://1933886249.rsc.cdn77.org/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 15,
+          "cdnUrl": "https://cdnperf-rum.cdnetworks.net/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 4,
+          "cdnUrl": "https://fastly.jsdelivr.net/gh/jimaek/js-test@1.1/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 18,
+          "cdnUrl": "https://azure-perfops.azureedge.net/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 3,
+          "cdnUrl": "https://perfops.perfstack.cf-china.info/500b-bench.jpg",
+          "p": "1"
+        }, {
+          "id": 10,
+          "cdnUrl": "https://akamai.perfstack.net/500b-bench.jpg",
+          "p": "1"
+        }]
+      };
     });
@@ -151,100 +273,4 @@ } // eslint-disable-next-line no-unused-vars
   function run() {
-    setTimeout(function () {
+    var processor = function processor() {
       fetchResourceList().then(function (response) {
-        if (!response || !response.data || !response.data.length) {
-          throw new Error('Empty response.data');
-        }
-
-        return response;
-      }).catch(function () {
-        // eslint-disable-next-line
-        return {
-          "data": [{
-            "id": 13,
-            "cdnUrl": "https://m9d7v5r2.map2.ssl.hwcdn.net/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 10,
-            "cdnUrl": "https://akamai.perfstack.net/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 24,
-            "cdnUrl": "https://img-cdnperf.mncdn.com/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 14,
-            "cdnUrl": "https://perfops.r.worldssl.net/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 22,
-            "cdnUrl": "https://09d3da8545e855ce.cdn.gocache.net/500b-bench.jpg",
-            "p": "0"
-          }, {
-            "id": 29,
-            "cdnUrl": "https://25748s.ha.azioncdn.net/500b-bench.jpg",
-            "p": "0"
-          }, {
-            "id": 1,
-            "cdnUrl": "https://kgmni17536myjst.belugacdn.link/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 17,
-            "cdnUrl": "https://edgecast.perfstack.net/8086B5F/bench/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 9,
-            "cdnUrl": "https://1933886249.rsc.cdn77.org/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 15,
-            "cdnUrl": "https://cdnperf-rum.cdnetworks.net/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 12,
-            "cdnUrl": "https://cdn.jsdelivr.net/gh/jimaek/js-test@1.1/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 5,
-            "cdnUrl": "https://d2axgrpnciinw7.cloudfront.net/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 8,
-            "cdnUrl": "https://perfops.gcdn.co/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 3,
-            "cdnUrl": "https://perfops.perfstack.cf-china.info/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 7,
-            "cdnUrl": "https://googlecdn.perfstack.net/5002b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 2,
-            "cdnUrl": "https://ovhcdn.perfstack.net/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 18,
-            "cdnUrl": "https://azure-perfops.azureedge.net/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 4,
-            "cdnUrl": "https://fastly.jsdelivr.net/gh/jimaek/js-test@1.1/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 6,
-            "cdnUrl": "https://perfops-ade2.kxcdn.com/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 20,
-            "cdnUrl": "https://cdnperf.cachefly.net/500b-bench.jpg",
-            "p": "1"
-          }, {
-            "id": 11,
-            "cdnUrl": "https://perfops.b-cdn.net/500b-bench.jpg",
-            "p": "1"
-          }]
-        };
-      }).then(function (response) {
-        var results = [];
         var metadata = {
@@ -255,49 +281,54 @@ ua: navigator.userAgent,
         };
-        var tooSlow = 0;
-        var down = 0;
-        return pMapSeries(response.data, function (resource) {
-          return fetchResource(resource).then(function (data) {
-            globalResults.push(data);
 
-            if (!data.up) {
-              down++;
-            } else if (data.time > 2000) {
-              tooSlow++;
-            } // time must be between 3 and 3000 ms
-            // if 2 or more providers in one batch fail, drop all results
+        var chunkedData = function (array, n) {
+          return Array.from(Array(Math.ceil(array.length / n)), function (_, i) {
+            return array.slice(i * n, i * n + n);
+          });
+        }(response, QUEUE_LIMIT);
 
+        return pMapSeries(chunkedData, function (resources) {
+          var results = [];
+          var tooSlow = 0;
+          var down = 0;
+          performance.clearResourceTimings();
+          return Promise.all(resources.map(function (resource) {
+            return fetchResource(resource).then(function (data) {
+              if (!data.up) {
+                down++;
+              } else if (data.time > 2000) {
+                tooSlow++;
+              } // time must be between 3 and 3000 ms
+              // if 2 or more providers in one batch fail, drop all results
 
-            if (down > 1 || data.up && (data.time < 3 || data.time > 3000)) {
-              return;
-            }
 
-            if (results.push(data) >= QUEUE_LIMIT) {
-              down = 0;
+              if (down > 1 || data.up && (data.time < 3 || data.time > 3000)) {
+                return;
+              }
 
-              if (tooSlow < QUEUE_LIMIT) {
-                tooSlow = 0;
-              } else {
-                tooSlow = 0;
-                return results.splice(0, results.length);
+              if (results.push(data) >= QUEUE_LIMIT) {
+                down = 0;
+
+                if (tooSlow < QUEUE_LIMIT) {
+                  tooSlow = 0;
+                } else {
+                  tooSlow = 0;
+                  return results.splice(0, results.length);
+                }
+
+                return storeResults(metadata, results.splice(0, results.length));
               }
-
-              return storeResults(metadata, results.splice(0, results.length));
-            }
-          });
-        }).then(function () {
-          if (down <= 1 && results.length) {
-            return storeResults(metadata, results);
-          }
+            });
+          }));
         });
       }).then(logInfo, logError).then(function () {
-        done = true;
-        resolvers.forEach(function (resolve) {
-          return resolve();
-        });
-      }); // eslint-disable-next-line comma-dangle
-    }, 3000);
+        return setTimeout(processor, REPEAT_DELAY);
+      });
+    }; // eslint-disable-next-line comma-dangle
+
+
+    setTimeout(processor, 3000);
   }
 
   function storeResults(metadata, data) {
-    return fetch('https://devnull.perfops.net/rum/v1', {
+    return fetch(API_URL, {
       data: JSON.stringify({
@@ -308,4 +339,2 @@ metadata: metadata,
       method: 'POST'
-    }).then(function (request) {
-      globalStoreMeta = JSON.parse(request.response);
     }).catch(logError);
@@ -323,6 +352,27 @@ }
   onLoad(function () {
-    if (typeof window.performance === 'undefined') {
+    /**
+     * Try to prevent loading the script at all for the major bots/crawlers.
+     * This is the first line defence against serving our scripts to crawlers.
+     * Warns in console if we aren't loading, to aid support.
+     **/
+    var knownBots = ['bot', 'headless', 'google', 'baidu', 'bing', 'msn', 'duckduckbot', 'teoma', 'slurp', 'yandex', 'phantomjs', 'pingdom', 'ahrefsbot'];
+    var botString = knownBots.join('|');
+    var botTestRegex = new RegExp(botString, 'i');
+    var isProbablyBot = botTestRegex.test(window.navigator.userAgent);
+
+    if (isProbablyBot) {
+      console.warn('PerfOps RUM not launching due to suspicious userAgent:', window.navigator.userAgent);
       return;
     }
 
+    if (typeof window.performance === 'undefined') {
+      return;
+    } // Clear performance API entries buffer when full
+
+
+    performance.onresourcetimingbufferfull = function () {
+      logInfo('clear performance resource buffer');
+      performance.clearResourceTimings();
+    };
+
     if (typeof Promise === 'function') {
@@ -337,26 +387,2 @@ return run();
   });
-  window.perfopsRumJs = {
-    getResults: function getResults() {
-      return new Promise(function (resolve) {
-        if (done) {
-          return resolve(globalResults);
-        }
-
-        resolvers.push(function () {
-          return resolve(globalResults);
-        });
-      });
-    },
-    getStoreMeta: function getStoreMeta() {
-      return new Promise(function (resolve) {
-        if (done) {
-          return resolve(globalStoreMeta);
-        }
-
-        resolvers.push(function () {
-          return resolve(globalStoreMeta);
-        });
-      });
-    }
-  };
 })(window.Promise);

dist/rom3.min.js

@@ -1,1 +0,1 @@
-"use strict";!function(u){var n,t=-1!==function(){}.toString().indexOf("minified")?{logInfo:console.log,logError:console.error}:{logInfo:function(){},logError:function(){}},e=t.logInfo,a=t.logError,c=window.rum?window.rum.key:void 0,r=null,i=[],o=[],d=!1;function p(r,n){var t=1<arguments.length&&void 0!==n?n:{},e=t.cb,o=void 0===e?function(){}:e,c=t.data,i=t.method,d=void 0===i?"GET":i,p=t.timeout,s=void 0===p?3e3:p;return new u(function(n,t){var e=new XMLHttpRequest;e.onload=function(){return n(e)},e.onerror=e.ontimeout=function(){a(e),t(new Error("Status ".concat(e.status,". Response: ").concat(e.statusText)))},e.open(d,r),e.timeout=s,o(e),e.send(c)})}function s(){setTimeout(function(){p("https://api.perfops.net/rum-cdn.php").then(function(n){return JSON.parse(n.response)}).then(function(n){if(!n||!n.data||!n.data.length)throw new Error("Empty response.data");return n}).catch(function(){return{data:[{id:13,cdnUrl:"https://m9d7v5r2.map2.ssl.hwcdn.net/500b-bench.jpg",p:"1"},{id:10,cdnUrl:"https://akamai.perfstack.net/500b-bench.jpg",p:"1"},{id:24,cdnUrl:"https://img-cdnperf.mncdn.com/500b-bench.jpg",p:"1"},{id:14,cdnUrl:"https://perfops.r.worldssl.net/500b-bench.jpg",p:"1"},{id:22,cdnUrl:"https://09d3da8545e855ce.cdn.gocache.net/500b-bench.jpg",p:"0"},{id:29,cdnUrl:"https://25748s.ha.azioncdn.net/500b-bench.jpg",p:"0"},{id:1,cdnUrl:"https://kgmni17536myjst.belugacdn.link/500b-bench.jpg",p:"1"},{id:17,cdnUrl:"https://edgecast.perfstack.net/8086B5F/bench/500b-bench.jpg",p:"1"},{id:9,cdnUrl:"https://1933886249.rsc.cdn77.org/500b-bench.jpg",p:"1"},{id:15,cdnUrl:"https://cdnperf-rum.cdnetworks.net/500b-bench.jpg",p:"1"},{id:12,cdnUrl:"https://cdn.jsdelivr.net/gh/jimaek/js-test@1.1/500b-bench.jpg",p:"1"},{id:5,cdnUrl:"https://d2axgrpnciinw7.cloudfront.net/500b-bench.jpg",p:"1"},{id:8,cdnUrl:"https://perfops.gcdn.co/500b-bench.jpg",p:"1"},{id:3,cdnUrl:"https://perfops.perfstack.cf-china.info/500b-bench.jpg",p:"1"},{id:7,cdnUrl:"https://googlecdn.perfstack.net/5002b-bench.jpg",p:"1"},{id:2,cdnUrl:"https://ovhcdn.perfstack.net/500b-bench.jpg",p:"1"},{id:18,cdnUrl:"https://azure-perfops.azureedge.net/500b-bench.jpg",p:"1"},{id:4,cdnUrl:"https://fastly.jsdelivr.net/gh/jimaek/js-test@1.1/500b-bench.jpg",p:"1"},{id:6,cdnUrl:"https://perfops-ade2.kxcdn.com/500b-bench.jpg",p:"1"},{id:20,cdnUrl:"https://cdnperf.cachefly.net/500b-bench.jpg",p:"1"},{id:11,cdnUrl:"https://perfops.b-cdn.net/500b-bench.jpg",p:"1"}]}}).then(function(n){var t=[],e={ua:navigator.userAgent,hostname:window.location.hostname,client:c},r=0,o=0;return function(n,r){return n.reduce(function(n,e){return n.then(function(t){return r(e).then(function(n){return t.push(n),t})})},u.resolve([]))}(n.data,function(n){return function(r){var o="".concat(r.cdnUrl,"?t=").concat(Date.now());return p(o).then(function(n){var t=performance.getEntriesByName(o)[0],e={id:r.id};return 200<=n.status&&n.status<300&&(e=Object.assign({},e,{up:1,time:Number((t.responseEnd-t.requestStart).toFixed(2)),dnsLookupTime:Number((t.domainLookupEnd-t.domainLookupStart).toFixed(2)),headers:n.getAllResponseHeaders()})),300<=n.status&&n.status<=500&&(e=Object.assign({},e,{up:0,dnsLookupTime:Number((t.domainLookupEnd-t.domainLookupStart).toFixed(2)),headers:n.getAllResponseHeaders()})),e}).catch(function(){return{id:r.id,up:0}})}(n).then(function(n){if(i.push(n),n.up?2e3<n.time&&r++:o++,!(1<o||n.up&&(n.time<3||3e3<n.time)))return 2<=t.push(n)?(o=0,r<2?(r=0,h(e,t.splice(0,t.length))):(r=0,t.splice(0,t.length))):void 0})}).then(function(){if(o<=1&&t.length)return h(e,t)})}).then(e,a).then(function(){d=!0,o.forEach(function(n){return n()})})},3e3)}function h(n,t){return p("https://devnull.perfops.net/rum/v1",{data:JSON.stringify({metadata:n,data:t}),method:"POST"}).then(function(n){r=JSON.parse(n.response)}).catch(a)}n=function(){if(void 0!==window.performance)return"function"==typeof u?s():void function(n,t){var e,r=document.createElement("script");r.onreadystatechange=r.onload=function(){e||t(),e=!0},r.setAttribute("src",n),document.body.appendChild(r)}("https://cdn.jsdelivr.net/npm/es6-promise@4.2.4/dist/es6-promise.min.js",function(){u=window.ES6Promise,s()})},"complete"===document.readyState?n():window.addEventListener("load",n),window.perfopsRumJs={getResults:function(){return new u(function(n){if(d)return n(i);o.push(function(){return n(i)})})},getStoreMeta:function(){return new u(function(n){if(d)return n(r);o.push(function(){return n(r)})})}}}(window.Promise);
+"use strict";!function(a){var n,c="https://devnull.perfops.net/rum/v1",t="https://api.perfops.net/rum-cdn.php",r=3e5,e=-1!==function(){}.toString().indexOf("minified")?{logInfo:console.log,logError:console.error}:{logInfo:function(){},logError:function(){}},o=e.logInfo,u=e.logError,i=window.rum?window.rum.key:void 0;function d(n){return Math.min(0,Number(n.toFixed(2)))}function p(r,n){var e=1<arguments.length&&void 0!==n?n:{},t=e.cb,o=void 0===t?function(){}:t,c=e.data,i=e.method,s=void 0===i?"GET":i,d=e.timeout,p=void 0===d?3e3:d;return new a(function(n,e){var t=new XMLHttpRequest;t.onload=function(){return n(t)},t.onerror=t.ontimeout=function(){u(t),e(new Error("Status ".concat(t.status,". Response: ").concat(t.statusText)))},t.open(s,r),t.timeout=p,o(t),t.send(c)})}function s(){setTimeout(function n(){(function(){var e="perfops-rum-resources",n=JSON.parse(window.localStorage.getItem(e));return n&&n.expiry>Date.now()?a.resolve(n.data):p(t).then(function(n){return JSON.parse(n.response)}).then(function(n){if(!n||!n.data||!n.data.length)throw new Error("Empty response.data");return window.localStorage.setItem(e,JSON.stringify({data:n.data,expiry:Date.now()+r})),n.data}).catch(function(){return{data:[{id:6,cdnUrl:"https://perfops-ade2.kxcdn.com/500b-bench.jpg",p:"1"},{id:13,cdnUrl:"https://m9d7v5r2.map2.ssl.hwcdn.net/500b-bench.jpg",p:"1"},{id:7,cdnUrl:"https://googlecdn.perfstack.net/5002b-bench.jpg",p:"1"},{id:1,cdnUrl:"https://kgmni17536myjst.belugacdn.link/500b-bench.jpg",p:"1"},{id:11,cdnUrl:"https://perfops.b-cdn.net/500b-bench.jpg",p:"1"},{id:5,cdnUrl:"https://d2axgrpnciinw7.cloudfront.net/500b-bench.jpg",p:"1"},{id:12,cdnUrl:"https://cdn.jsdelivr.net/gh/jimaek/js-test@1.1/500b-bench.jpg",p:"1"},{id:2,cdnUrl:"https://ovhcdn.perfstack.net/500b-bench.jpg",p:"1"},{id:22,cdnUrl:"https://09d3da8545e855ce.cdn.gocache.net/500b-bench.jpg",p:"0"},{id:17,cdnUrl:"https://edgecast.perfstack.net/8086B5F/bench/500b-bench.jpg",p:"1"},{id:29,cdnUrl:"https://25748s.ha.azioncdn.net/500b-bench.jpg",p:"0"},{id:8,cdnUrl:"https://perfops.gcdn.co/500b-bench.jpg",p:"1"},{id:24,cdnUrl:"https://img-cdnperf.mncdn.com/500b-bench.jpg",p:"1"},{id:14,cdnUrl:"https://perfops.r.worldssl.net/500b-bench.jpg",p:"1"},{id:20,cdnUrl:"https://cdnperf.cachefly.net/500b-bench.jpg",p:"1"},{id:9,cdnUrl:"https://1933886249.rsc.cdn77.org/500b-bench.jpg",p:"1"},{id:15,cdnUrl:"https://cdnperf-rum.cdnetworks.net/500b-bench.jpg",p:"1"},{id:4,cdnUrl:"https://fastly.jsdelivr.net/gh/jimaek/js-test@1.1/500b-bench.jpg",p:"1"},{id:18,cdnUrl:"https://azure-perfops.azureedge.net/500b-bench.jpg",p:"1"},{id:3,cdnUrl:"https://perfops.perfstack.cf-china.info/500b-bench.jpg",p:"1"},{id:10,cdnUrl:"https://akamai.perfstack.net/500b-bench.jpg",p:"1"}]}})})().then(function(n){var t,o={ua:navigator.userAgent,hostname:window.location.hostname,client:i};return function(n,r){return n.reduce(function(n,t){return n.then(function(e){return r(t).then(function(n){return e.push(n),e})})},a.resolve([]))}((t=n,Array.from(Array(Math.ceil(t.length/3)),function(n,e){return t.slice(3*e,3*e+3)})),function(n){var e=[],t=0,r=0;return performance.clearResourceTimings(),a.all(n.map(function(n){return function(i){var s="".concat(i.cdnUrl,"?t=").concat(Date.now());return p(s).then(function(n){var e=performance.getEntriesByName(s)[0],t={id:i.id},r=d(e.domainLookupEnd-e.domainLookupStart),o=d(e.connectEnd-e.connectStart),c=0<o?d(e.connectEnd-e.secureConnectionStart):0;return 200<=n.status&&n.status<300&&(t=Object.assign({},t,{up:1,time:Number((e.responseEnd-e.requestStart).toFixed(2)),dnsLookupTime:r,tcpTime:o,sslTime:c,headers:n.getAllResponseHeaders()})),300<=n.status&&n.status<=500&&(t=Object.assign({},t,{up:0,dnsLookupTime:r,tcpTime:o,sslTime:c,headers:n.getAllResponseHeaders()})),t}).catch(function(){return{id:i.id,up:0}})}(n).then(function(n){if(n.up?2e3<n.time&&t++:r++,!(1<r||n.up&&(n.time<3||3e3<n.time)))return 3<=e.push(n)?(r=0,t<3?(t=0,function(n,e){return p(c,{data:JSON.stringify({metadata:n,data:e}),method:"POST"}).catch(u)}(o,e.splice(0,e.length))):(t=0,e.splice(0,e.length))):void 0})}))})}).then(o,u).then(function(){return setTimeout(n,6e4)})},3e3)}n=function(){var n=["bot","headless","google","baidu","bing","msn","duckduckbot","teoma","slurp","yandex","phantomjs","pingdom","ahrefsbot"].join("|");if(new RegExp(n,"i").test(window.navigator.userAgent))console.warn("PerfOps RUM not launching due to suspicious userAgent:",window.navigator.userAgent);else if(void 0!==window.performance){if(performance.onresourcetimingbufferfull=function(){o("clear performance resource buffer"),performance.clearResourceTimings()},"function"==typeof a)return s();!function(n,e){var t,r=document.createElement("script");r.onreadystatechange=r.onload=function(){t||e(),t=!0},r.setAttribute("src",n),document.body.appendChild(r)}("https://cdn.jsdelivr.net/npm/es6-promise@4.2.4/dist/es6-promise.min.js",function(){a=window.ES6Promise,s()})}},"complete"===document.readyState?n():window.addEventListener("load",n)}(window.Promise);

package.json

 {
 	"name": "perfops-rom",
-	"version": "1.1.1",
+	"version": "1.1.2",
 	"jsdelivr": "./dist/rom3.min.js",
@@ -5,0 +5,0 @@ "description": "RUM code for https://perfops.net/",

Fixed alerts

Major refactor

Supply chain risk

Package has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

34471

increased by13.19%

Lines of code

654

increased by4.81%

Number of medium supply chain risk alerts

8

decreased by-11.11%

No dependency changes