function bytes$1(value, options) {
	  if (typeof value === 'string') {
	    return parse(value);
	  }

	  if (typeof value === 'number') {
	    return format(value, options);
	  }

	  return null;
	}
Convert the given value in bytes into a string or parse to string to an integer in bytes.

@param {string|number} value
@param {{
 case: [string],
 decimalPlaces: [number]
 fixedDecimals: [boolean]
 thousandsSeparator: [string]
 unitSeparator: [string]
 }} [options] bytes options.

@returns {string|number|null}