stack-promises

!npm bundle size

A stack of tasks that are executed one by one, but the result is taken from the last.
Identical functions on the stack (check by reference) are executed only once.

Install

npm

``sh
npm install stack-promises
`

yarn

`sh
yarn add stack-promises
`

Usage

`js
import creteStackPromises from 'stack-promises';

const stackPromises = creteStackPromises();

stackPromises.add(() => Promise.resolve(1));
stackPromises.add(() => Promise.resolve(2));

stackPromises().then(data => {
console.log(data); /// 2
});
`

$3

`js
import creteStackPromises from 'stack-promises';

const stackPromises = creteStackPromises();

stackPromises
.add(() => Promise.resolve(1))() // execute
.then(data => {
console.log(data); // 1
});
stackPromises
.add(() => Promise.resolve(2))() // execute
.then(data => {
console.log(data); // 2
});

stackPromises().then(data => {
console.log(data); // 2
});
`

$3

`js
import creteStackPromises, { isPromiseIsNotActualError } from 'stack-promises';
import delayPromise from 'promise-delay';

const stackPromises = creteStackPromises();

let checkQue = 0;
const request1 = () =>
delayPromise(3000, 1).finally(() => {
checkQue += 1;
});
const resultAfter1 = stackPromises.add(request1)();

const request2 = () =>
delayPromise(1000, 2).finally(() => {
checkQue *= 2;
});
const resultAfter2 = stackPromises.add(request2)();

Promise.allSettled([resultAfter1, resultAfter2]).then(([{ reason }, { value }]) => {
isPromiseIsNotActualError(reason); // true
value; // 2
checkQue; // 2
// request1 called 1 times
// request2 called 1 times
});
`

$3

`js
stackPromises.add(() => Promise.resolve(1)).add(() => Promise.resolve(2));
`

Run tests

`sh
npm test
``

Maintainer

Krivega Dmitriy

- Website: https://krivega.com
- Github: @Krivega

Contributing

Contributions, issues and feature requests are welcome!
Feel free to check issues page. You can also take a look at the contributing guide.

📝 License

Copyright © 2020 Krivega Dmitriy.

This project is MIT licensed.