lie

Creating a new promise

This feature allows you to create a new promise. The constructor takes a function that contains the asynchronous operation. The function provides two arguments, resolve and reject, which are used to settle the promise.

var Promise = require('lie');
var myPromise = new Promise(function (resolve, reject) {
  // Asynchronous operation here
  if (/* operation successful */) {
    resolve('Success!');
  } else {
    reject('Failure!');
  }
});

Promise resolution

This feature is used to create a promise that is immediately resolved with a given value. It's useful for converting values to promises.

var Promise = require('lie');
Promise.resolve('Immediate resolve').then(function (value) {
  console.log(value); // 'Immediate resolve'
});

Promise rejection

This feature is used to create a promise that is immediately rejected with a given reason. It's useful for representing asynchronous operations that have failed.

var Promise = require('lie');
Promise.reject(new Error('Immediate reject')).catch(function (error) {
  console.error(error); // Error: 'Immediate reject'
});

Chaining promises

This feature allows you to chain multiple promises together and perform actions once all of them are settled. The Promise.all method returns a single promise that resolves when all of the promises in the iterable argument have resolved.

var Promise = require('lie');
var p1 = Promise.resolve(3);
var p2 = 1337;
var p3 = new Promise(function (resolve, reject) {
  setTimeout(resolve, 100, 'foo');
});

Promise.all([p1, p2, p3]).then(function (values) {
  console.log(values); // [3, 1337, 'foo']
});