interval-as-promise.js

let status = false;
let iframeReq = () => {
  return new Promise((resolve, reject) => {
  let timeout = 10;
  let counter = 0;
  let timer = setInterval(() => {
     if(!status) {
       if(counter < timeout) {
         counter++;
       } else {
         reject();
         clearInterval(timer);
       }
     } else {
       resolve();
       clearInterval(timer);
     }
  }, 1000)
})
}

setTimeout(() => {
  status = true
}, 5000)

iframeReq().then(() => {console.log(status)})