Run results for: falsy vs typeof

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.97 Safari/537.36

Browser: Chrome 78

Operating system: Linux

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
falsy	10313428.0 Ops/sec
typeof	192994.3 Ops/sec

Script Preparation code:

let a = null
let b = null

Tests:

falsy
let a = undefined let b = null if (a) console.log('-') if (b) console.log('-')
typeof
let a = undefined let b = null if (typeof a === 'undefined') console.log('-') if (typeof b === 'undefined') console.log('-')