Calculate angle between 2 headings, used to determine if change of direction meets some angle threshold

calculateAngleBetweenHeadings.ts

const calculateAngleBetweenHeadings = (heading1: number, heading2: number): number => {
  // Normalize headings to be between 0 and 360 degrees
  // eslint-disable-next-line no-param-reassign
  heading1 %= 360;
  // eslint-disable-next-line no-param-reassign
  heading2 %= 360;

  // Calculate the absolute difference
  let difference = Math.abs(heading1 - heading2);

  // If the difference is greater than 180, we need to go the other way around the circle
  if (difference > 180) {
    difference = 360 - difference;
  }

  return difference;
};