inlining-perf-test.js

const { performance } = require('perf_hooks');

let counter = 0;
let log = [];

function logPure(log, value) {
    log.push(value);
}

function logDirty() {
    log.push(counter);
}

// %NeverOptimizeFunction(logPure);
// %NeverOptimizeFunction(logDirty);

{
    log = [];
    let i = 10000;
    const tStart = performance.now();
    while (i--) logPure(log, counter);
    console.log('pure: ', performance.now() - tStart);
}
{
    log = [];
    let i = 10000;
    const tStart = performance.now();
    while (i--) logDirty(counter);
    console.log('dirty: ', performance.now() - tStart);
}
{
    log = [];
    let i = 10000;
    const tStart = performance.now();
    while (i--) log.push(counter);
    console.log('inline: ', performance.now() - tStart);
}