// --- Usage Example --- Evil Dead Regeneration Pc Game Download Ocean Best Site
class DataProcessor { @LogPerformance heavyComputation(data) { // Simulate work for (let i = 0; i < 1000000; i++) {} return data + ' processed'; } } Film Confessions Of A Shopaholic — 2009 And Produced
function LogPerformance(target, propertyKey, descriptor) { const originalMethod = descriptor.value; const methodName = target.constructor.name + '.' + propertyKey;
Since "Petka" often refers to the V8 JavaScript engine (developed by the V8 team, including Petka Antonov), and version 8.5 was a significant release introducing capabilities like the and Top-level await , the most helpful feature to create is a Performance Monitoring Decorator . Feature: @LogPerformance Decorator Target: Node.js 8.5+ (V8 8.5) Purpose: To automatically log the execution time and memory usage of heavy functions during development, leveraging the native performance hooks introduced in this version. The Code const { performance, PerformanceObserver } = require('perf_hooks');
// Observer to print results to console const obs = new PerformanceObserver((list) => { const entry = list.getEntries()[0]; console.log(`[Perf] ${entry.name} took ${entry.duration.toFixed(2)}ms`); performance.clearMarks(); }); obs.observe({ entryTypes: ['measure'] });
// A simple cache to hold our performance marks const marks = new Map();
descriptor.value = function (...args) { const startMark = `start-${methodName}`; const endMark = `end-${methodName}`; // Start measuring performance.mark(startMark); const result = originalMethod.apply(this, args); // Handle both Sync and Async functions if (result instanceof Promise) { return result.finally(() => { performance.mark(endMark); performance.measure(methodName, startMark, endMark); }); } else { performance.mark(endMark); performance.measure(methodName, startMark, endMark); return result; } }; return descriptor; }