function measureHeaderPerformance() {

const headers = [

{ name: 'Accept', value: '*/*' },

{ name: 'Content-Type', value: 'application/json' },

{ name: 'User-Agent', value: 'Mozilla/5.0' },

{ name: 'X-Custom-Header', value: 'myvalue' },

{ name: 'Authorization', value: 'Bearer mytoken' },

];

const startTime = performance.now(); // Record start time

for (const header of headers) {

// Simulate setting the header in a request

const headerKey = header.name;

const headerValue = header.value;

console.log(`Setting header: ${headerKey}=${headerValue}`);

// In a real scenario, this would be part of a fetch or XMLHttpRequest

}

const endTime = performance.now(); // Record end time

const duration = endTime - startTime; // Calculate duration

console.log(`Header performance measurement complete.`);

console.log(`Total duration: ${duration} milliseconds`);

}

measureHeaderPerformance();