```ts
/** Safely divide two numbers. Throws an Error if the divisor is zero or non-finite,
 *  and rejects booleans. */
export function safeDivide(a: number, b: number): number {
  if (!Number.isFinite(b)) {
    throw new Error("Cannot divide by non-finite number");
  }
  if (b === 0) {
    throw new Error("Cannot divide by zero");
  }
  if (typeof a !== "number" || typeof b !== "number") {
    throw new Error("Both arguments must be numbers");
  }
  return a / b;
}
```