Promise.every

PromiseResolveAll.js

Promise.resolveAll = function petepete(promises) {
  function reflect(promise) {
    if (Promise.resolve(promise) !== promise) {
      return promise;
    }
    return promise.then((v) => {return v;}).catch((e) => {return e;});
  }
  return Promise.all(promises.map(reflect));
};