@typed/future/esm/all.js

Asynchronous Future Values

import { Disposable } from '@typed/disposable';
import { provide } from '@typed/env';
import { fork } from './fork';
import { Future } from './Future';
export const all = (futures) => Future.create((reject, resolve, environment) => {
    const hasValues = Array(futures.length).fill(false);
    const values = Array(futures.length);
    const disposable = Disposable.lazy();
    function left(a) {
        disposable.dispose();
        return reject(a);
    }
    function right(b, index) {
        hasValues[index] = true;
        values[index] = b;
        if (hasValues.every(Boolean)) {
            return resolve(values);
        }
        return Disposable.None;
    }
    futures.forEach((f, i) => {
        disposable.addDisposable(fork(left, (b) => right(b, i), provide(f, environment)));
    });
    return disposable;
});
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