Run results for: Wrapped class field access speed v1

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser: Chrome 123

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Static object, static property

23/s

Dynamic object, const property

22/s

Dynamic object, static property

21/s

Dynamic object, dynamic property

21/s

View exact numbers

Test name	Executions per second
✓ Static object, static property	23 Ops/sec
Dynamic object, const property	22 Ops/sec
Dynamic object, static property	21 Ops/sec
Dynamic object, dynamic property	21 Ops/sec

Script Preparation code:

class ValueHolder {
  #value;
  get value() {return this.#value;}
  set value(v) {this.#value = v;}
}
const holder = new ValueHolder();

function getValue1(x) {
  return holder.value;
}
function wrappedValue1(x) { return getValue1(x); }

function getValue2(x, anyHolder=holder) {
  return anyHolder.value;
}
function wrappedValue2(x) { return getValue2(x); }

function getValue3(x, anyHolder=holder) {
  const propName = "value";
  return anyHolder[propName];
}
function wrappedValue3(x) { return getValue3(x); }

function getValue4(x, anyHolder=holder, propName="value") {
  return anyHolder[propName];
}
function wrappedValue4(x) { return getValue1(4); }
               
function benchmark(func) {
  let x; 
  for (let i = 0; i < 1000000; i++) {
    x = func(i);
  }
  return x;
}

Tests:

Static object, static property
benchmark(wrappedValue1)
Dynamic object, static property
benchmark(wrappedValue2)
Dynamic object, const property
benchmark(wrappedValue3)
Dynamic object, dynamic property
benchmark(wrappedValue4)