perf-marks/dist/es2015/index.js

The simplest and lightweight solution for User Timing API in Javascript.

import './user-timing-api-resolver';
export * from './marks';
export * from './entries';
export * from './profiler';
export * from './is-nodejs-env';
export * from './is-user-timing-api-supported';
export * from './is-performance-observable-supported';