@typed/effects/esm/combinators/combine.js

Generator-powered Effect management

import { Disposable } from '@typed/disposable';
import { Resume, runEnv } from '@typed/env';
import { runEffect } from '../run';
export function* combine(...effects) {
    if (effects.length === 0) {
        return [];
    }
    return yield combineEnvs(effects.map(runEffect));
}
function combineEnvs(envs) {
    return (c) => Resume.create((cb) => {
        const hasValues = Array(envs.length).fill(false);
        const values = Array(envs.length);
        const disposable = Disposable.lazy();
        function onValue(value, index) {
            hasValues[index] = true;
            values[index] = value;
            if (hasValues.every(Boolean)) {
                disposable.addDisposable(cb(values));
            }
            return Disposable.None;
        }
        for (let i = 0; i < envs.length; ++i) {
            disposable.addDisposable(runEnv((value) => onValue(value, i), c, envs[i]));
        }
        return disposable;
    });
}
//# sourceMappingURL=combine.js.map