Run results for: const within vs outside a function

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
const within function	108960.1 Ops/sec
const outside function	109453.5 Ops/sec

Script Preparation code:

var strToConvert = "yr89vi083hf*/:<>?\\|*/:<>?\\|*/:<>?\\|*/:<>?\\|*/:<>?\\|*/:<>?\\|984hijhfgvjhngkjqherkjfherh";

String.prototype.constWithin=function(o,e){
  const HW='"*/:<>?\\|',FW='＂＊／：＜＞？＼＼｜',FC=String.fromCharCode;
  return Array.prototype.reduce.call(this,
           o && Object.hasOwn(o,"char") && (e=o.char, !0) ? (r,c) => r + (HW.includes(c)?e:c)                         :
           o?.reverse                                     ? (r,c) => r + (FW.includes(c)?FC(c.charCodeAt(0)-65248):c) :
                                                            (r,c) => r + (HW.includes(c)?FC(c.charCodeAt(0)+65248):c) ,
         "")
}

{
  const HW='"*/:<>?\\|',FW='＂＊／：＜＞？＼＼｜',FC=String.fromCharCode;
  String.prototype.constOutside=function(o,e){
    return Array.prototype.reduce.call(this,
             o && Object.hasOwn(o,"char") && (e=o.char, !0) ? (r,c) => r + (HW.includes(c)?e:c)                         :
             o?.reverse                                     ? (r,c) => r + (FW.includes(c)?FC(c.charCodeAt(0)-65248):c) :
                                                              (r,c) => r + (HW.includes(c)?FC(c.charCodeAt(0)+65248):c) ,
           "")
  }
}

Tests:

const within function
strToConvert.constWithin()
const outside function
strToConvert.constOutside()

Run results for: const within vs outside a function

const within function

const outside function