message: chore: remove always falsy condition on perf
diff: @@ -46,10 +46,7 @@ var MemoryStats = function (){
  var perf = window.performance || {};
  // polyfill usedJSHeapSize
  - if (!perf && !perf.memory){
  - perf.memory = { usedJSHeapSize : 0 };
  - }
  - if (perf && !perf.memory){
  + if (!perf.memory){
  perf.memory = { usedJSHeapSize : 0 };
  }
  