1'use strict'; 2/* eslint-disable no-global-assign */ 3 4require('../common'); 5 6const perf_hooks = require('perf_hooks'); 7const { 8 strictEqual 9} = require('assert'); 10 11const perf = performance; 12strictEqual(globalThis.performance, perf_hooks.performance); 13performance = undefined; 14strictEqual(globalThis.performance, undefined); 15strictEqual(typeof perf_hooks.performance.now, 'function'); 16 17// Restore the value of performance for the known globals check 18performance = perf; 19