Optional ReadonlycurrencyRequired when style is 'currency'.
Optional ReadonlymaximumMaximum digits after the decimal separator.
Optional ReadonlyminimumMinimum digits after the decimal separator.
Optional ReadonlyminimumMinimum digits before the decimal separator.
Optional ReadonlystyleOutput style; currency and unit styles require their matching option.
Optional ReadonlyunitRequired when style is 'unit'.
Optional ReadonlyuseWhether locale-specific digit grouping may be used.
Options for number formatting.