Promise Generator Consumers

PromiseGeneratorConsumers.js

// iterate till first success
new Promise((resolve) => {

    runGeneratorOnce(myPromiseGenerator, initialValue);

    function runGeneratorOnce(pg, result) { var status = pg.next(result);
        if (status.done) { reject(); return; }

        status.value.then(resolve).catch(value => {
            return runGeneratorOnce(pg, value);
        });
    }

    function* myPromiseGenerator() {
        // many yields
    }
});

// iterate all
new Promise((resolve) => {

    runGeneratorOnce(myPromiseGenerator, initialValue);

    function runGeneratorOnce(pg, result) {
        var status = pg.next(result);
        
        if (status.done) { resolve(); return; }
        
        status.value.then(value => {
            return runGeneratorOnce(pg, value);
        }).catch(reject);
    }

    function* myPromiseGenerator() {
        // many yields
    }
});