Function currency

currency(
    value: string | number | string[] | number[] | undefined,
    decimals: number | undefined,
    defaultValue?: number,
): string | undefined
This function formats a value as currency
Parameters
- value: string | number | string[] | number[] | undefined
  Number to be formatted
- decimals: number | undefined
  Number of decimal places to display
- OptionaldefaultValue: number
  Default value
Returns string | undefined
Formatted currency string