task-api

Install

You will usually install a task runner that depends on this library, like task-run.
But if you only want the api without actually running tasks:

npm install task-api

Usage

import { Task, Status } from "task-api";
 
async function getNumberFromDatabase(key: string): Task<number> {
    // Use a task runner to create a task.
    // See: task-run - https://gitlab.com/itayronen/task-run.
}
 
export async function getSum(cancelToken: { onCancel: () => void }): Promise<number> {
    let sum = 0;
 
    let task1 = getNumberFromDatabase("key1");
    let task2 = getNumberFromDatabase("key2");
 
    await task1.end;
    await task2.end;
 
    if (task1.isSucceded) sum += await task1;
    if (task2.isSucceded) sum += await task2;
 
    return sum;
}