Welcome to the documentation for the iPromise library!
Overview
iPromise is a versatile and powerful library that allows you to manage and work with promises in JavaScript. It provides a clean and intuitive API for handling asynchronous operations and supports chaining, composition, error handling, and more.
Installation
To install iPromise, you can use npm or yarn. Open your terminal and run:
npm install ipromise
or
yarn add ipromise
Usage
To start using iPromise in your project, follow these steps:
Step 1: Import iPromise
Import the iPromise module into your JavaScript file:
import iPromise from 'ipromise';
Step 2: Create a Promise
Create a new promise using the iPromise
constructor:
const promise = new iPromise((resolve, reject) => {
// Your asynchronous code here
// Call resolve(data) when the operation is successful
// Call reject(error) when an error occurs
});
Step 3: Handle Promises
Once you have a promise, you can use its methods to handle asynchronous operations:
promise
.then(data => {
// Handle the resolved data
})
.catch(error => {
// Handle any errors
})
.finally(() => {
// Perform cleanup or final tasks
});
Step 4: Chaining Promises
iPromise supports method chaining, allowing you to perform multiple asynchronous operations in sequence:
promise
.then(data => {
// Perform some operation with the resolved data
return additionalPromise;
})
.then(data => {
// Perform another operation with the resolved data
return yetAnotherPromise;
})
.catch(error => {
// Handle any errors that occurred during the chain
});
Advanced Features
Feature 1: Promise Composition
iPromise allows you to compose promises using the iPromise.all()
and iPromise.race()
methods. These methods let you combine multiple promises or race them against each other to handle complex scenarios.
const promise1 = new iPromise((resolve, reject) => { /* ... */ });
const promise2 = new iPromise((resolve, reject) => { /* ... */ });
iPromise.all([promise1, promise2])
.then(data => {
// Handle the resolved data from both promises
})
.catch(error => {
// Handle any errors that occurred during composition
});
Feature 2: Error Handling
iPromise provides convenient error handling mechanisms through the .catch()
and .finally()
methods. Use .catch()
to handle any errors during promise execution, and .finally()
to run cleanup tasks regardless of the promise outcome.
promise
.then(data => { /* ... */ })
.catch(error => {
// Handle any errors that occurred during promise execution
})
.finally(() => {
// Perform cleanup tasks
});
Conclusion
iPromise is a powerful library that simplifies working with promises in JavaScript. With its intuitive API and advanced features, you can efficiently handle asynchronous operations and build robust applications. Start using iPromise today and experience the benefits it offers!