@mightyplow/jslib/function/enqueueWithResults.js

js helpers library

/**
 Returns a function which executes promises one after another. The resulting function
 returns a promise, which gets filled with an array of the results of the single promises.

 @memberOf function
 @param promiseGenerators an array of functions which return a promise
 @return function which executes the promises
 */
var enqueueWithResults = function () {
    var fnQueue = function fnQueue(results, promiseGenerators) {
        return promiseGenerators.reduce(function (f, promiseGenerator) {
            return function () {
                return f().then(function (result) {
                    results.push(result);
                    return promiseGenerator();
                });
            };
        });
    };

    return function (promiseGenerators) {
        return function () {
            var results = [];
            return fnQueue(results, promiseGenerators)().then(function (result) {
                results.push(result);
                return results;
            });
        };
    };
}();

export default enqueueWithResults;