function composite() {
		var done;
		var args;
		var i;

		// Cache the callback function:
		done = arguments[ arguments.length-1 ];

		// Copy arguments which should be provided to the first invoked function...
		args = new Array( arguments.length-1 );
		for ( i = 0; i < args.length; i++ ) {
			args[ i ] = arguments[ i ];
		}
		// Append the callback an invoked function should call upon completion:
		args.push( next );

		// Start invoking provided functions:
		i = nFuncs - 1;
		f[ i ].apply( null, args );

		/**
		* Callback invoked upon completion of a composed function.
		*
		* @private
		* @param {(Error|null)} error - error object
		* @param {*} result - result to pass to next function
		* @returns {void}
		*/
		function next( error, result ) {
			if ( error ) {
				return done( error );
			}
			i -= 1;
			if ( i < 0 ) {
				return done( null, result );
			}
			f[ i ]( result, next );
		}
	}
Composite function.

@private
@param {...*} args - arguments
@param {Callback} done - callback to invoke after invoking all functions