ccxt/js/src/base/ws/Future.js

A cryptocurrency trading API with more than 100 exchanges in JavaScript / TypeScript / Python / C# / PHP / Go

// @ts-nocheck
import { Unpromise } from "../../static_dependencies/watchable/src/unpromise.js";
export function Future() {
    let resolve = undefined, reject = undefined;
    const p = new Promise((resolve_, reject_) => {
        resolve = resolve_;
        reject = reject_;
    });
    p.resolve = function _resolve() {
        // eslint-disable-next-line prefer-rest-params
        queueMicrotask(() => {
            resolve.apply(this, arguments);
        });
    };
    p.reject = function _reject() {
        // eslint-disable-next-line prefer-rest-params
        queueMicrotask(() => {
            reject.apply(this, arguments);
        });
    };
    return p;
}
function wrapFuture(aggregatePromise) {
    const p = Future();
    // wrap the promises as a future
    aggregatePromise.then(p.resolve, p.reject);
    return p;
}
Future.race = (futures) => wrapFuture(Unpromise.race(futures));