const delay = (ms) => new Promise(ok => setTimeout(() => ok(ms), ms));

function run(gena) {
    let iter = gena();

    function next (result, error) {
        let value, done;
        if (!error) {
            [{value, done}] = [iter.next(result)];
            console.log(  [{value, done}])
        } else {
            [{value, done}] = [iter.throw(result)];
            console.log(  [{value, done}])
        }
        if(done){
            return;
        }
        if (value && typeof value?.then === 'function') {
            value.then(next, err => next(undefined, err));
        }else{
           next({value})
        }
    }
    next()
}
run(likeAsync);

function* likeAsync() {
    console.log(1);
    console.log(yield 1.5);
    let res1 = yield delay(2000);
    console.log(2, res1);
    let res2 = yield delay(2000);
    console.log(3, res2);
    try {
        console.log(yield fetch('httpshghh://localhost:8080'));
    } catch (e) {
        console.log(e, 'Hi ERROR');
    }
}