Benchmark: js private field - es2017

Script Preparation code:

"use strict";
var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
    if (kind === "m") throw new TypeError("Private method is not writable");
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
    return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
};
var _MyClass__propertyOne, _MyClass__propertyTwo, _MyClass__sum;
class MyClass {
    constructor() {
        _MyClass__propertyOne.set(this, 1);
        _MyClass__propertyTwo.set(this, 2);
        _MyClass__sum.set(this, 0);
    }
    sumProperties() {
        for (let i = 0; i < 10000; i++)
            __classPrivateFieldSet(this, _MyClass__sum, __classPrivateFieldGet(this, _MyClass__sum, "f") + (__classPrivateFieldGet(this, _MyClass__propertyOne, "f") + __classPrivateFieldGet(this, _MyClass__propertyTwo, "f")), "f");
    }
}
_MyClass__propertyOne = new WeakMap(), _MyClass__propertyTwo = new WeakMap(), _MyClass__sum = new WeakMap();

class MyClassPublic {
    _propertyOne = 1;
    _propertyTwo = 2;
    _sum = 0;

    sumProperties() {
    	for (let i = 0; i < 10_000; i++)
        	this._sum += this._propertyOne + this._propertyTwo;
    }
}

Tests:

private
new MyClass().sumProperties();
public
new MyClassPublic().sumProperties();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
private
public

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 10 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:143.0) Gecko/20100101 Firefox/143.0

Browser/OS: Firefox 143 on Windows

View result in a separate tab

public

137K/s

private

1K/s

View exact numbers

Test name	Executions per second
✓ public	137,212 Ops/sec
private	1,358 Ops/sec

js private field - es2017 (version: 1)

Comparing performance of: `private vs public`

Created: 10 months ago by: Guest

Go to the latest result

private

public

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

js private field - es2017 (version: 1)

Comparing performance of: private vs public

Created: 10 months ago by: Guest

Go to the latest result

private

public

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `private vs public`