What's the difference between safeDivide (partial) and totalDivide (total)?

const safeDivide = (a: number, b: number): number | never => {
  if (b === 0) throw new Error("Division by zero");
  return a / b;
};

const totalDivide = (a: number, b: number): number =>
  b === 0 ? 0 : a / b;