promise-some

promise-some.js

function someAsPromise(arr, cb) {
  var index = -1;

  var run = function () {
    index++;
    if (index < arr.length) {
      return cb(arr[index]).then(function (val) {
        if (val === true) {
          return true;
        } else {
          return run();
        }
      });
    } else {
      return false;
    }
  };

  return run();
}