PetKatt

// const fetch = require("node-fetch"); // npm install fetchAPI for Node.js

run(function*() {
  const uri = 'https://jsonplaceholder.typicode.com/todos/1';
  const response = yield fetch(uri); // first stop
  const resJSON = yield response.json(); // second stop
  console.log(resJSON);
});

// take care of the generator function

PetKatt

// SIMULATION OF A DATA FETCHING REQUEST WITH PROMISE

// Fulfilled Promise (data fetched successfully)
var promise1 = new Promise(function(resolve, reject) {
  setTimeout(function() {
    resolve("Promise resolved");
  }, 300);
  setTimeout(function() {
    reject("Promise Rejected");
  }, 500);

PetKatt

// EAGER EVALUATION with RangeError on the var stream

function Stream(value) {
  this.value = value;
  this.next = new Stream(value + 1);
}

var stream = new Stream(10);
console.log(stream);