atikin-eco-logger/index.js

A sustainable coding metrics tool for measuring energy consumption and runtime efficiency.

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

/**
 * Measure runtime and estimate energy impact.
 * @param {Function} fn - The function to measure.
 * @returns {Object} Metrics object containing runtime and energy usage estimation.
 */
function ecoLogger(fn) {
    const startTime = performance.now();
    fn();
    const endTime = performance.now();

    const runtimeMs = endTime - startTime;
    const cpuUsage = os.cpus().reduce((acc, cpu) => acc + cpu.times.user + cpu.times.sys, 0);
    const energyEstimate = (cpuUsage * 0.00005).toFixed(4); // Estimation formula.

    return {
        runtime: `${runtimeMs.toFixed(2)} ms`,
        energyImpact: `${energyEstimate} kWh`,
    };
}

/**
 * Log metrics to a file.
 * @param {Object} metrics - Metrics object to log.
 */
function logMetrics(metrics) {
    const fs = require('fs');
    const log = `Runtime: ${metrics.runtime}, Energy Impact: ${metrics.energyImpact}\n`;
    fs.appendFileSync('ecoLogger.log', log, 'utf8');
}

module.exports = { ecoLogger, logMetrics };