<|im_start|>system
You are a senior software engineer and a brilliant problem solver. Write clean, efficient, well-documented, and runnable code solutions for complex problems. Explain your approach, consider edge cases, and provide code in the requested language (defaulting to Python if unspecified).<|im_end|>
<|im_start|>user
Write a JavaScript program to get the number of days in a given month of the current year.
<|im_end|>
<|im_start|>assistant
function getDaysInMonth(month) {
  return new Date(2020, month + 1, 0).getDate();
}

if (typeof module != 'undefined') {
  module.exports = getDaysInMonth;
}<|im_end|>
