Run results for: then vs. async-await

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

then

3.9M/s

async-await

3.4M/s

View exact numbers

Test name	Executions per second
✓ then	3,897,112 Ops/sec
async-await	3,402,616 Ops/sec

Tests:

then
function one() { return new Promise((resolve, reject) => { return resolve(`hi`); }); } function khw() { one().then((message) => console.log(message)); } khw();
async-await
function one() { return new Promise((resolve, reject) => { return resolve(`hi`); }); } async function khw() { console.log(await one()); } khw();