```ts

/** The safeDivide function */
export function safeDivide(a: number, b: number): number {
  // Check if both inputs are finite numbers
  if (!Number.isFinite(a) || !Number.isFinite(b)) {
    throw new Error('Both arguments must be finite numbers');
  }

  // Check if the divisor is not zero (including -0)
  if (b === 0) {
    throw new Error('Division by zero is not allowed');
  }
  
  return a / b;
}
```