chaning-promises.js

const firstRequest = () =>
  fetch("https://api.github.com/users/mikaelhadler").then((res) => {
    console.log("First request completed");
    if (!res.ok) {
      return res.json().then((errorData) => {
        throw new Error(`Failed at firstRequest: ${errorData.message}`);
      });
    }
    return res.json();
  });

const secondRequest = () =>
  fetch("https://api.github.com/users/x").then((res) => {
    console.log("Second request completed");
    if (!res.ok) {
      return res.json().then((errorData) => {
        throw new Error(`Failed at secondRequest: ${errorData.message}`);
      });
    }
    return res.json();
  });

const thirdRequest = () =>
  fetch("https://api.github.com/users/xx").then((res) => {
    console.log("Third request completed");
    if (!res.ok) {
      return res.json().then((errorData) => {
        throw new Error(`Failed at thirdRequest: ${errorData.message}`);
      });
    }
    return res.json();
  });

const allRequests = [firstRequest, secondRequest, thirdRequest];

const executeRequests = () =>
  allRequests.reduce(
    (promiseChain, currentRequest) =>
      promiseChain.then((results) =>
        currentRequest(results[results.length - 1])
          .then((result) => [...results, result])
          .catch((error) => {
            throw error;
          })
      ),
    Promise.resolve([])
  );

executeRequests()
  .then((allResults) => {
    console.log("All results:", allResults);
  })
  .catch((error) => {
    console.error("Execution stopped due to error:", error);
  });