bench-proxy.js

if (typeof console === "undefined")
    console = {log: print}

function benchmark(iterations, pr) {
    const obj = { value: 42 };
    const proxy = new Proxy(obj, {
        get(target, prop) {
            return prop === "value" ? 42 : undefined;
        }
    });

    if (pr)
        console.log(`Benchmarking with ${iterations} iterations...`);

    // Plain object access
    let start = Date.now();
    let sum1 = 0;
    for (let i = 0; i < iterations; i++) {
        sum1 += obj.value;
    }
    let end = Date.now();
    let timeObj = end - start;

    // Proxy access
    start = Date.now();
    let sum2 = 0;
    for (let i = 0; i < iterations; i++) {
        sum2 += proxy.value;
    }
    end = Date.now();
    let timeProxy = end - start;

    if (pr) {
        console.log(`Plain object: ${timeObj} ms total, ${iterations} iterations, ${(timeObj / iterations).toFixed(6)} ms/iteration`);
        console.log(`Proxy: ${timeProxy} ms total, ${iterations} iterations, ${(timeProxy / iterations).toFixed(6)} ms/iteration`);
    }
}

benchmark(10_000_000, false);
benchmark(10_000_000, true);