Run results for: Test Build

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0

Browser: Firefox 82

Operating system: Windows 7

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Ternaries	2442250.0 Ops/sec
Map/Join/Replace	1012681.0 Ops/sec

Tests:

Ternaries
const localityList = ["us", "eu", "au", "jp"]; const max = localityList.length - 1; let returnStr = ''; for (const [index, region] of localityList.entries()) { returnStr += index === max ? `, or ${region}` : `${index !== 0 ? ', ' : ''}${region}`; } return returnStr;
Map/Join/Replace
const localityList = ["us", "eu", "au", "jp"]; return localityList .map(item => `${item}`) .join(', ') .replace(/(,)(?!.*,)/sg, ', or');