coach-core/lib/dom/timings/userTimings.js

Core package for the Coach.

(function () {
  'use strict';

  const measures = [];
  const marks = [];

  if (window.performance && window.performance.getEntriesByType) {
    const myMarks = Array.prototype.slice.call(
      window.performance.getEntriesByType('mark')
    );

    myMarks.forEach(function (mark) {
      marks.push({
        name: mark.name,
        startTime: mark.startTime
      });
    });

    const myMeasures = Array.prototype.slice.call(
      window.performance.getEntriesByType('measure')
    );

    myMeasures.forEach(function (measure) {
      measures.push({
        name: measure.name,
        duration: measure.duration,
        startTime: measure.startTime
      });
    });
  }

  return {
    marks: marks,
    measures: measures
  };
})();