Run results for: Typeof GlobalThis Check

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:89.0) Gecko/20100101 Firefox/89.0

Browser: Firefox 89

Operating system: Linux

Device Platform: Desktop

Date tested: 2 months ago

Test name	Executions per second
Memoize typeof call	451.8 Ops/sec
Call typeof every time	480.6 Ops/sec

Tests:

Memoize typeof call
let cachedGlobal; function getGlobal() { if (cachedGlobal) { return cachedGlobal; } if (typeof globalThis !== 'undefined' && globalThis) { cachedGlobal = globalThis; } return cachedGlobal } for (let i = 0; i < 4000; i++) { const global = getGlobal(); }
Call typeof every time
function getGlobal() { if (typeof globalThis !== 'undefined' && globalThis) { return globalThis; } } for (let i = 0; i < 4000; i++) { const global = getGlobal(); }