promiseloop.js

let flag = true;
async function frozen(promise) {
    flag = await promise;
    console.info("done");
}
let complete = null;
frozen(new Promise((reply, reject) => {
    complete = reply;
}));
// you'll never see 'done'
complete(false);
// even after you complete the promise
// because js may keep a promise on the event loop
// even if it was completed on the same 'thread'
while (flag) {}