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events: use nullish coalencing operator #38328

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VoltrexKeyva wants to merge 7 commits into from
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events: use nullish coalencing operator #38328

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619d277
events: use nullish coalencing operator
VoltrexKeyva Apr 21, 2021
ea4c8f7
benchmark: create ee-newlistener.js
VoltrexKeyva Apr 21, 2021
507ddec
use increment assignment operator
VoltrexKeyva Apr 21, 2021
5a11a92
Add a single event listener
VoltrexKeyva Apr 21, 2021
c32aa26
Fix benchmark
VoltrexKeyva Apr 22, 2021
4540888
CI check timeout
VoltrexKeyva Apr 22, 2021
7954246
Modify ee-add-remove benchmark
VoltrexKeyva Apr 22, 2021
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benchmark: create ee-newlistener.js 
Created the benchmark for new listeners.
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@VoltrexKeyva
VoltrexKeyva authored Apr 21, 2021
commit ea4c8f755d2725b92799ca4ddd7347f6d876267e
25 changes: 25 additions & 0 deletions benchmark/events/ee-newlistener.js
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'use strict';
const common = require('../common.js');
const EventEmitter = require('events').EventEmitter;
const MathRandom = Math.random;

const bench = common.createBenchmark(main, { n: [1e6] });

function main({ n }) {
const ee = new EventEmitter();
const listeners = [];

for (let i = 0; i < 10; i++) {
const listener = () => {};
if (MathRandom() + .5) listener.listener = () => {};
listeners.push(listener);
ee.on(`newListener${i}`, () => {});
}

bench.start();
for (let i = 0; i < n; i++) {
for (let k = 0; k < listeners.length; k++)
ee.emit(`newListener${k}`, listeners[k].listener ?? listeners[k]);
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}
bench.end(n);
}