async-lodash.ts

const _async = require('async');
const _ = require('lodash');

public doSomething = async(num) : Promise<any> => {
     return num*num + 1;
} 

public async getResults() {
    let results = new Array<any>();
    let tasks = [];

    try {
      const list = [1,2,3,4,5,6,7,8,9,10];

      list.forEach((item) => {
        tasks.push((callback) => {
          this.doSomething(item.then(
            (res) => {
              results.push(res);
              callback(null, res);
            }
          );
        })
      })

      results = await new Promise((resolve) => {
        _async.series(tasks, (err, res) => {
          console.log(res);
          if (err) {
            results.push(err);
          }
          resolve(results);
        })
      });
    } catch (err) {
      results.push(err.message);
      console.log(err);
    }

    return _.join(results, '\r\n');
  }