```
/**
 * Calculates the division of two numbers safely.
 * Throws an Error if the divisor is zero (including -0),
 * or if either argument is not a finite number.
 *
 * @param {number} a - The dividend.
 * @param {number} b - The divisor.
 * @returns {number} The result of dividing a by b.
 */
export function safeDivide(a: number, b: number): number {
  if (!Number.isFinite(a) || !Number.isFinite(b)) {
    throw new Error("Arguments must be finite numbers.");
  }
  if (b === 0 || b === -0) {
    throw new Error("Divisor cannot be zero.");
  }
  return a / b;
}
```