Use Array.map() Instead of Loops

Problem

Traditional for loops to transform arrays are verbose and error-prone with manual index management.

Solution

Use Array.map() to transform arrays in a functional, declarative way.

Benefit

Reduces code by 60%, eliminates off-by-one errors, and makes intent clearer.

Code Example

// Instead of:
const doubled = [];
for (let i = 0; i < numbers.length; i++) {
    doubled.push(numbers[i] * 2);
}

// Use:
const doubled = numbers.map(n => n * 2);