```ts
/**
 * Divides two numbers safely.
 *
 * @param a - The dividend; must be finite.
 * @param b - The divisor; must be non-zero and finite.
 * @returns The result of `a / b`.
 * @throws {Error} If either argument is not a finite number, or if the divisor is zero (including -0).
 */
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) {
    throw new Error('Divisor cannot be zero');
  }

  return a / b;
}
```
