Run results for: set vs weakset

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

weak set

79.3M/s

set

62.1M/s

View exact numbers

Test name	Executions per second
✓ weak set	79,336,336 Ops/sec
set	62,059,076 Ops/sec

Script Preparation code:

var objs = Array(100).fill().map(() => { return {} })
var obj = objs[50]

var set = new Set()
var weakset = new WeakSet()

var times = 100
while (times--) {
	set.add(objs[times])
	weakset.add(objs[times])
}

Tests:

set
set.has(obj)
weak set
weakset.has(obj)