comparePerformance.js

function comparePerformance(firstFunction, secondFunction, iterations = 1) {
    const averageExecutionTime = (func) => {
        const executions = [];
        for (let i = 0; i < iterations; i++) {
            const start = performance.now();
            func();
            const end = performance.now();

            executions.push(end - start);
        }

        const sum = executions.reduce((a, b) => a + b, 0);
        return (sum / executions.length) || 0;
    }

    console.log('[PERFORMANCE] EXECUTING FIRST FUNCTION');
    const firstAverage = averageExecutionTime(firstFunction);

    console.log('[PERFORMANCE] EXECUTING SECOND FUNCTION');
    const secondAverage = averageExecutionTime(secondFunction);


    if (firstAverage < secondAverage) {
        console.log('[PERFORMANCE] The FIRST function is faster by', firstAverage - secondAverage, 'ms');
    } else if (firstAverage > secondAverage) {
        console.log('[PERFORMANCE] The SECOND function is faster by', firstAverage - secondAverage, 'ms');
    } else {
        console.log('[PERFORMANCE] It\'s a draw! Both functions took the same execution time');
    }

    console.log('[PERFORMANCE] first execution time:', firstAverage, 'ms');
    console.log('[PERFORMANCE] second execution time:', secondAverage, 'ms');
}

// window.comparePerformance = comparePerformance; /* Descomente para usar no DevTools com mais facilidade.
export default comparePerformance;