Run results for: wrapping a value in an array

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.1 Safari/605.1.15

Browser: Safari 13

Operating system: Mac OS X 10.14.6

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
typeof	1061979.0 Ops/sec
boolean conversion	1052107.0 Ops/sec

Script Preparation code:

var values = [1, [1, 2, 3], undefined, [4], undefined, 5];

Tests:

typeof
let wrapped; for (const value of values) { wrapped = typeof value === "undefined" ? [] : Array.isArray(value) ? value : [value]; }
boolean conversion
let wrapped; for (const value of values) { wrapped = !value ? [] : Array.isArray(value) ? value : [value]; }