Your Code,
Documented.
Instantly.

INPUT — your code

function calculateDiscount(
  price, userTier
) {
  const rates = {
    premium: 0.25,
    standard: 0.10,
    free: 0
  };
  return price * (1 - rates[userTier]);
}

OUTPUT — generated docs

## calculateDiscount

Applies a tier-based discount to a
given price.

**Parameters**
- `price` (number) — Base price
- `userTier` (string) — User tier:
  'premium' | 'standard' | 'free'

**Returns** number — Discounted price

**Example**
```js
calculateDiscount(100, 'premium')
// → 75
```