var superGet, superInit,
		globalEe = new EventEmitter();

	function validateTypeEvent( value, name ) {
		validateType( value, name, typeof value === "string" || value instanceof RegExp, "String or RegExp" );
	}

	function validateThenCall( method, self ) {
		return function( event, listener ) {
			validatePresence( event, "event" );
			validateTypeEvent( event, "event" );

			validatePresence( listener, "listener" );
			validateTypeFunction( listener, "listener" );

			return self[ method ].apply( self, arguments );
		};
	}

	function off( self ) {
		return validateThenCall( "off", self );
	}

	function on( self ) {
		return validateThenCall( "on", self );
	}

	function once( self ) {
		return validateThenCall( "once", self );
	}

	Cldr.off = off( globalEe );
	Cldr.on = on( globalEe );
	Cldr.once = once( globalEe );

	/**
	 * Overload Cldr.prototype.init().
	 */
	superInit = Cldr.prototype.init;
	Cldr.prototype.init = function() {
		var ee;
		this.ee = ee = new EventEmitter();
		this.off = off( ee );
		this.on = on( ee );
		this.once = once( ee );
		superInit.apply( this, arguments );
	};

	/**
	 * getOverload is encapsulated, because of cldr/unresolved. If it's loaded
	 * after cldr/event (and note it overwrites .get), it can trigger this
	 * overload again.
	 */
	function getOverload() {

		/**
		 * Overload Cldr.prototype.get().
		 */
		superGet = Cldr.prototype.get;
		Cldr.prototype.get = function( path ) {
			var value = superGet.apply( this, arguments );
			path = pathNormalize( path, this.attributes ).join( "/" );
			globalEe.trigger( "get", [ path, value ] );
			this.ee.trigger( "get", [ path, value ] );
			return value;
		};
	}

	Cldr._eventInit = getOverload;
	getOverload();

	return Cldr;