Run results for: Object.toString custom vs JSON.stringify

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:95.0) Gecko/20100101 Firefox/95.0

Browser: Firefox 95

Operating system: Ubuntu

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
String	4186.0 Ops/sec
JSON	4288.2 Ops/sec

Script Preparation code:

window.a = {
 x: 1,
 y: 2,

 toString() {
	return "{" + Object.entries(this).reduce((acc, [key, val]) => acc += key !== "toString" ? `"${key}":${val},` : "", "") + "}";
 }
}

Tests:

String
console.log(String(a));
JSON
console.log(JSON.stringify(a));