'use strict';
var arrayWith = require('array.prototype.with');
/**
 * @template T
 * @param {readonly T[]} arr
 * @param {(action: T, count: number, arrActive: readonly T[]) => T | Promise<T>} cb
 * @returns {Promise<readonly T[]>}
 */
function promiseSeries(arr, cb) {
    var count = 0;
    return arr.reduce(function (acc, action) { return acc.then(function (arrActive) { return Promise.resolve(cb(action, count, arrActive)).then(function (value) {
        count += 1;
        return arrayWith(arrActive, count - 1, value);
    }); }); }, Promise.resolve(arr));
}
module.exports = promiseSeries;