Benchmark: double equals null vs boolean

Script Preparation code:

var values = [(function*() {})(), undefined, null, {}];

Tests:

== null
let isIterable; for (const value of values) { isIterable = value != null && typeof value[Symbol.iterator] === "function"; }
implicit boolean conversion
let isIterable; for (const value of values) { isIterable = value && typeof value[Symbol.iterator] === "function"; }
explicit boolean conversion
let isIterable; for (const value of values) { isIterable = !!value && typeof value[Symbol.iterator] === "function"; }
typeof + triple equals null
let isIterable; for (const value of values) { isIterable = typeof value !== "undefined" && value !== null && typeof value[Symbol.iterator] === "function"; }

Rendered benchmark preparation results:

Previous results

Test case name	Result
== null
implicit boolean conversion
explicit boolean conversion
typeof + triple equals null

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36

Browser/OS: Chrome 83 on Windows

Test name	Executions per second
== null	2196285.0 Ops/sec
implicit boolean conversion	2207197.0 Ops/sec
explicit boolean conversion	2195805.0 Ops/sec
typeof + triple equals null	1953195.0 Ops/sec

double equals null vs boolean (version: 0)