Run results for: console.time overhead confirmed

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Firefox/91.0

Browser: Firefox 91

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
without console.time	6561733.0 Ops/sec
with console.time	78040.3 Ops/sec

Script Preparation code:

function factorial (num) {
    if (num < 0) {
        throw new Error("Number cannot be negative.");
    }

    if (num % 1 !== 0) {
        throw new Error("Number must be an integer.");
    }

    // The base case
    if (num === 0 || num === 1) {
        return 1;
    }

    // The general case
    return num * factorial(num - 1);
}

Tests:

without console.time
factorial(20);
with console.time
console.time('factorial'); factorial(20); console.timeEnd('factorial');

Run results for: console.time overhead confirmed

without console.time

with console.time