format.js

define([
	"../common/format-message"
], function( formatMessage ) {

/**
 * format( value, numberFormatter, pluralGenerator, unitProperies )
 *
 * @value [Number]
 *
 * @numberFormatter [Object]: A numberFormatter from Globalize.numberFormatter.
 *
 * @pluralGenerator [Object]: A pluralGenerator from Globalize.pluralGenerator.
 *
 * @unitProperies [Object]: localized unit data from cldr.
 *
 * Format units such as seconds, minutes, days, weeks, etc.
 *
 * OBS:
 *
 * Unit Sequences are not implemented.
 * http://www.unicode.org/reports/tr35/tr35-35/tr35-general.html#Unit_Sequences
 *
 * Duration Unit (for composed time unit durations) is not implemented.
 * http://www.unicode.org/reports/tr35/tr35-35/tr35-general.html#durationUnit
 */
return function( value, numberFormatter, pluralGenerator, unitProperties ) {
	var compoundUnitPattern = unitProperties.compoundUnitPattern, dividend, dividendProperties,
		formattedValue, divisor, divisorProperties, message, pluralValue, oneProperty;

	unitProperties = unitProperties.unitProperties;
	formattedValue = numberFormatter( value );
	pluralValue = pluralGenerator( value );

	// computed compound unit, eg. "megabyte-per-second".
	if ( unitProperties instanceof Array ) {
		dividendProperties = unitProperties[ 0 ];
		divisorProperties = unitProperties[ 1 ];
		oneProperty = divisorProperties.hasOwnProperty( "one" ) ? "one" : "other";

		dividend = formatMessage( dividendProperties[ pluralValue ], [ formattedValue ] );
		divisor = formatMessage( divisorProperties[ oneProperty ], [ "" ] ).trim();

		return formatMessage( compoundUnitPattern, [ dividend, divisor ] );
	}

	message = unitProperties[ pluralValue ];

	return formatMessage( message, [ formattedValue ] );
};

});