format method
Format number
according to our pattern and return the formatted string.
Implementation
String format(number) {
if (_isNaN(number)) return symbols.NAN;
if (_isInfinite(number)) return "${_signPrefix(number)}${symbols.INFINITY}";
_add(_signPrefix(number));
_formatNumber(number.abs());
_add(_signSuffix(number));
var result = _buffer.toString();
_buffer.clear();
return result;
}