async-test-util/dist/es/performance-now.js

Util-functions that are be useful in async tests

import isNode from 'is-node';
import NodeOnly from './require-on-node-only';

/**
 * same as performance.now()
 * but works in browsers and nodeJs
 * @link https://developer.mozilla.org/de/docs/Web/API/Performance/now
 */
export default function performanceNow() {
  var perf;
  if (isNode) {
    var performance = NodeOnly.perfHooks.performance;
    perf = performance;
  } else perf = window.performance;
  return perf.now();
}