Class myPromise

polyfills/promise-methods.js:17–107

};

class myPromise {
  static all(thenableList) {
    return new Promise((resolve, reject) => {
      const res = new Array(thenableList.length);
      let pending = res.length;
      thenableList.forEach((promise, index) => {
        promise.then(
          (value) => {
            res[index] = value;
            pending--;
            if (pending == 0) {
              resolve(res);
            }
          },
          (err) => {
            reject(err);
          }
        );
      });
    });
  }

  static allSettled(thenableList) {
    return new Promise((resolve, reject) => {
      const res = new Array(thenableList.length);
      let pending = res.length;
      thenableList.forEach((promise, index) => {
        promise
          .then((value) => {
            res[index] = {
              status: "fulfilled",
              value: value,
            };
          })
          .catch((err) => {
            res[index] = {
              status: "rejected",
              reason: err,
            };
          })
          .finally(() => {
            pending--;
            if (pending == 0) {
              resolve(res);
            }
          });
      });
    });
  }

  static any(thenableList) {
    return new Promise((resolve, reject) => {
      if (thenableList.length == 0) {
        reject({ status: "rejected", reason: "empty list" });
      } else {
        const aggregate = {
          status: "rejected",
          reason: [],