Benchmark: typeof string vs nullish check

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

var stringArr = Array(10_000).fill(undefined).map((_, index) => `${index + 1}`);
var nullishArr = Array(10_000).fill(undefined).map(() => null);

Tests:

typeof string
const stringResult = stringArr.filter((v) => typeof v === 'string'); const nullishResult = nullishArr.filter((v) => typeof v === 'string');
nullish check
const stringResult = stringArr.filter((v) => v != null); const nullishResult = nullishArr.filter((v) => v != null);

Rendered benchmark preparation results:

Previous results

Test case name	Result
typeof string
nullish check

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser/OS: Chrome 133 on Windows

Test name	Executions per second
typeof string	12941.8 Ops/sec
nullish check	8637.6 Ops/sec

Related benchmarks:

typeof string vs nullish check (version: 1)