- It helps to customize the color of the output of the command-line output
- It helps to improve the quality of the output by providing several color options like for warning message red color and many more
- Purpose: Morgan is a logging middleware for Express. It logs HTTP requests and responses, which is useful for debugging and monitoring.
- Usage: Often used in development to log requests in the console.
- Purpose: This utility helps in executing a function only after a certain number of calls. It is often used to coordinate asynchronous operations.
- Usage: For example, if you need to wait for multiple asynchronous actions to complete before proceeding, you can use after to track these actions.
- Purpose: This middleware provides Redis-based session storage for applications using the express-session middleware.
- Usage: It is used to store session data in a Redis store, which is particularly useful for distributed systems where sessions need to be shared across multiple servers.
- Parse Cookie header and populate req.cookies with an object keyed by the cookie names. Optionally you may enable signed cookie support by passing a secret string, which assigns req.secret so it may be used by other middleware.
- Purpose: This middleware parses cookies attached to the client request object. This makes it easy to access cookie data in your Express applications.
- Usage: It's typically used to read cookies for authentication and session management.
- Purpose: This middleware creates session cookies using a client-side cookie, meaning session data is stored in the cookie itself, reducing server load.
- Usage: Useful for simple session management without the need for a server-side store.
- Purpose: EJS is a templating engine for generating HTML markup with JavaScript. It is used to embed JavaScript code in HTML files, allowing for dynamic content rendering.
- Usage: Commonly used to render views in Express applications.
- Purpose: ESLint is a linter for JavaScript code. It helps in identifying and fixing problems in your JavaScript codebase according to specified rules and style guidelines.
- Usage: It enforces coding standards and helps maintain code quality.
- Purpose: This middleware manages session data on the server-side. It is used to store user sessions, typically in memory or in a database.
- Usage: Essential for user login systems where session data like authentication tokens are needed.
- Purpose: HBS is a view engine for Express using Handlebars templates. It allows for rendering HTML views with dynamic content.
- Usage: Typically to serve HTML pages in an Express application.
- Purpose: Marked is a Markdown parser and compiler. It converts Markdown syntax into HTML.
- Usage: Useful for rendering Markdown content dynamically in web applications.
Purpose: This middleware allows HTTP methods like PUT or DELETE to be used where the client doesn't support it. It overrides the HTTP method using a query parameter or request header.
- Usage: Useful in RESTful APIs where the client (like HTML forms) can only send GET or POST requests.
- Purpose: Mocha is a test framework for Node.js, used for running unit tests. It provides a structured way to write tests and assert the behavior of your code.
- Usage: Commonly used in conjunction with assertion libraries like Chai.
-Purpose: NYC is a code coverage tool for Node.js. It measures how much of your code is covered by tests.
- Usage: Integrated into test suites to report on test coverage.
- Purpose: This library provides a simple API for password hashing using the PBKDF2 (Password-Based Key Derivation Function 2) algorithm.
- Usage: Used for securely storing user passwords.
- Purpose: Supertest is a library for testing HTTP endpoints. It provides a high-level abstraction for writing tests for web applications.
- Usage: Commonly used to test RESTful APIs by making HTTP requests and verifying the responses.
- Purpose: This middleware handles virtual hosts. It allows you to serve multiple domains from a single Express app.
- Usage: Useful for creating subdomains or multi-domain setups within an Express application.