concurrency-skeleton.ts

type Task<T> = () => Promise<T>;

const tasks: Task<number>[] = [
  () => new Promise((resolve) => setTimeout(() => resolve(1), 1000)),
  () => new Promise((resolve) => setTimeout(() => resolve(2), 2000)),
  () => new Promise((resolve) => setTimeout(() => resolve(3), 1000)),
  () => new Promise((resolve) => setTimeout(() => resolve(4), 3000)),
  () => new Promise((resolve) => setTimeout(() => resolve(5), 1000)),
  () => new Promise((resolve) => setTimeout(() => resolve(6), 2000)),
  () => new Promise((resolve) => setTimeout(() => resolve(7), 2000)),
  () => new Promise((resolve) => setTimeout(() => resolve(8), 4000)),
  () => new Promise((resolve) => setTimeout(() => resolve(9), 2000)),
  () => new Promise((resolve) => setTimeout(() => resolve(1), 5000)),
];

class TaskRunner<T> {
  constructor(private tasks: Task<T>[], private concurency: number) {
    this.tasks = tasks;
  }

  public async run(): Promise<T[]> {
    // Implement the task runner
    return [];
  }
}

const taskRunner = new TaskRunner<number>(tasks, 3);

taskRunner.run().then((results: number[]) => {
  console.log(results);
});