Function detectPerformanceApi

tests/qunit-2.9.2.js:154–156

()

  var performanceNow = hasPerformanceApi ? performance.now.bind(performance) : now;

  function detectPerformanceApi() {
  	return window$1 && typeof window$1.performance !== "undefined" && typeof window$1.performance.mark === "function" && typeof window$1.performance.measure === "function";
  }

  function measure(comment, startMark, endMark) {