o-promise

Open Promise 👐

Micro tool for creating OpenPromise likes Deferred (with AbortController support).

npm i --save o-promise

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Usage

import {createOpenPromise} from 'o-promise';

// 1. Tuple
const [promise, resolve, reject] = createOpenPromise<string>();

// 2. Deferred
const {promise, resolve, reject} = createOpenPromise<number>();

// 3. With executer + return
const open = createOpenPromise(() => {
	return '...';
});

open.state; // pending
open.reject('canceled'); // `executer` — won't be called
open.state; // rejected

// 4. With executer + promise
const open = createOpenPromise(() => {
	// for example
	return fetch('...');
});

// 5. With executer + resolvers
const open = createOpenPromise((resolve, reject) => {
	// Your Logic
});

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Support AbortController

Open "fetch"

import {createOpenPromise} from 'o-promise';

const openFetch = createOpenPromise((_, __, controller) => {
	return fetch('...', {signal: controller.signal});
});

// Reject
openFetch.reject('cacneled');

// Or `AbortController#abort`
openFetch.controller.abort('canceled');

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100% code & types covergae ;]