setInterval stop duplicate fetch response

setInterval fetch pool

// maybe not a good case for http-pooling but works in some case of pet project

let smokeBreak = false; // https://www.youtube.com/watch?v=kdRPFBJ-jVc

try {
    const x = setInterval(() => {
        if (!smokeBreak) {
            smokeBreak = true;
            fetch('// a long wait request maybe wait more 5 sec to read: network error ')
                .then((res) => res.json())
                .then((job) => {
                    // your logic code
                    if (job.success) {
                        clearInterval(x);
                        console.log(job);
                    } else {
                        smokeBreak = false;
                    }
                })
        }
    }, 5000);
} catch (err) {
    console.log(err.message);
}