function execute until promise condition fails

until.js

function until(fn, condition) {
  condition()
  .then((met) => {
    if(met) {
      fn().then(() => {
        until(fn, condition);
      });
    }
  });
}

value = 20;

fn = () => {
  return Promise.try(() => {
    value = value - 1
    console.log(value);
  });
};

cond = () => Promise.try(() => value > 10);

until(fn, cond);