Run results for: Regexp vs split cookie

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 139

Operating system: Android

Device Platform: Mobile

Date tested: one month ago

Test name	Executions per second
Regexp	70146.9 Ops/sec
Split	73320.5 Ops/sec

Script Preparation code:

var cookie = 'intercom-id-mrtzdw2q=c2be8491-1730-4343-b16e-1c708643318e; token=eyJ0eXAiOiJKV1QiLCJhbGciOiJFUzI1NiIsImtpZCI6IjhjMTgyMTY1YWNmN2U3Yjg3NzkwNzcxNWFmZWRiNzhmIn0.e30.McvbBVzvGzsawYch7ToCgtCrUicIQZ3_wNBV93fVBMm90JTldSpzdDgXd0eY7au1AxQst08mH-7FVy4C8wr4EQ; intercom-session=acj; intercom-session-mq='

Tests:

Regexp
const TOKEN_REGEXP = /token=(\S+)/ const [, token] = TOKEN_REGEXP.exec(cookie) console.log(token)
Split
const token = cookie?.split('token=')[1] ? cookie.split('token=')[1].split(';')[0] : undefined console.log(token)

Run results for: Regexp vs split cookie

Regexp

Split