Run results for: Function vs dynamic function vs strict dynamic function

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:122.0) Gecko/20100101 Firefox/122.0

Browser: Firefox 122

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Normal function (non-strict)	5044656.0 Ops/sec
Normal function (strict)	5047458.5 Ops/sec
Arrow function (non-strict)	5109593.0 Ops/sec
Arrow function (strict)	5073956.5 Ops/sec
Dynamic function (non-strict)	5188007.0 Ops/sec
Dynamic function (strict)	5213577.5 Ops/sec

Script Preparation code:

function funcPN() {
  let r = Math.random().toString(36).substring(7).includes('x');
}
function funcPS() {
  "use strict";
  let r = Math.random().toString(36).substring(7).includes('x');
}
var funcAN = () => {
  let r = Math.random().toString(36).substring(7).includes('x');
}
var funcAS = () => {
  "use strict";
  let r = Math.random().toString(36).substring(7).includes('x');
}
var funcDN = new Function("let r = Math.random().toString(36).substring(7).includes('x');");
var funcDS = new Function("\"use strict\";let r = Math.random().toString(36).substring(7).includes('x');");

Tests:

Normal function (non-strict)
funcPN();
Normal function (strict)
funcPS();
Arrow function (non-strict)
funcAN();
Arrow function (strict)
funcAS();
Dynamic function (non-strict)
funcDN();
Dynamic function (strict)
funcDS();

Run results for: Function vs dynamic function vs strict dynamic function

Normal function (non-strict)

Normal function (strict)

Arrow function (non-strict)

Arrow function (strict)

Dynamic function (non-strict)

Dynamic function (strict)