Recursive JS promises with delay

recursivePromiseWithDelay.js

#!/usr/bin/nodejs

var Promise = require( 'promise' );

/**
 *
 * @param {Array} list
 * @param {int} delay
 */
function recursivePromiseWithDelay( list, delay ) {
    console.log( 'Return new promise' );
    return new Promise( function( resolve, reject ) {

        /* Get first list item */
        var listItem = list.shift();

        console.log( 'Set delay of ' + delay + ' seconds' );
        setTimeout( function() {

            /* Fake asynchronous operation,
             * place an AJAX call or whatever here
             */
            console.log( 'Start asynchronous operation "' + listItem + '"' );
            setTimeout( function() {
                console.log( 'Async operation "' + listItem + '" finished' );

                if( list.length > 0 ) {
                    recursivePromiseWithDelay( list, delay ).then( function() {
                        resolve();
                    });
                }
                else {
                    resolve();
                }
            }, 2345 );
            /* End of async operation */

        }, delay * 1000 );
    } );
}

recursivePromiseWithDelay( ['A', 'B', 'C', 'D', 'E'], 2 ).then( function( value ) {
    console.log( 'Finished');
} ).catch( function( error ) {
    console.error( error );
} );