Function currency

currency(value: undefined | number | number[], decimals: undefined | number, defaultValue?: number): string | undefined
This function formats a value as currency

Returns
Formatted currency string
Parameters
- value: undefined | number | number[]
  
  Number to be formatted
- decimals: undefined | number
  
  Number of decimal places to display
- Optional defaultValue: number
  
  Default value
Returns string | undefined