Function formatCurrency

formatCurrency(amount: number, currency?: string): string
Formats a number into a currency string.
Parameters
- amount: number
  The number to convert.
- currency: string = "$"
  The currency symbol to prefix.
Returns string
A formatted string like "$5.00"
Example
```
formatCurrency(10) // "$10"
```
- Defined in src/currency/utils.ts:11