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Writing Maintainable, Scalable, and Readable TypeScript Code

Table of Contents Introduction to Code Maintainability Principles of Maintainable TypeScript Code Key Practices for Writing Scalable TypeScript Code Enhancing Readability in TypeScript Code Structuring TypeScript Projects for Scalability Advanced...

Monorepos with TypeScript: Nx, Turborepo Basics

Table of Contents What is a Monorepo? Benefits of Monorepos Overview of Nx and Turborepo What is Nx? What is Turborepo? Setting Up a Monorepo with Nx Setting Up a Monorepo...

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Linting and Formatting: ESLint + Prettier for TypeScript

Table of Contents Introduction Why Linting and Formatting Are Critical What is ESLint? What is Prettier? How ESLint and Prettier Work Together Setting Up ESLint in a TypeScript Project Installing Dependencies Configuring...

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Clean Code Principles and Best Practices for TypeScript

Table of Contents Introduction Why Clean Code Matters Core Clean Code Principles Meaningful Names Small, Focused Functions Single Responsibility Principle (SRP) Avoiding Side Effects Favor Composition Over Inheritance DRY (Don’t Repeat Yourself) KISS (Keep...

Event-Driven Programming with Typed Events in TypeScript

Table of Contents Introduction What is Event-Driven Programming (EDP)? Why Typed Events Matter Building a Simple Event System in TypeScript Defining Typed Event Interfaces Creating an Event Emitter Class Subscribing, Emitting,...

Domain-Driven Design (DDD) Basics in TypeScript

Table of Contents Introduction What is Domain-Driven Design (DDD)? Core Concepts of DDD Entities Value Objects Aggregates Repositories Services Structuring a DDD Project in TypeScript Example: Building a Simple DDD Module in TypeScript Best Practices...

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Repository Pattern and Working with Entities in NestJS

The Repository Pattern is a structural pattern that provides an abstraction layer between the data access logic and business logic in your application. By...

Connecting to PostgreSQL with TypeORM or Prisma in NestJS

Connecting to a PostgreSQL database is a fundamental part of many web applications. In NestJS, there are several libraries and ORMs (Object-Relational Mappers) available...

Creating Reusable Libraries and Shared Modules in NestJS

In large-scale applications, code reuse and modularization are key factors in ensuring maintainability and scalability. NestJS, being built on top of TypeScript and leveraging...

Working with HttpModule and RESTful APIs in NestJS

In modern web development, RESTful APIs are an essential part of creating robust applications. They provide a standardized way for clients to communicate with...

Understanding Async Programming and Promises in NestJS

Asynchronous programming is a critical concept in JavaScript, and it plays a significant role in server-side applications built with NestJS. As NestJS is based...

Logging with NestJS Logger and Custom Loggers

Logging is a crucial part of any application, and NestJS provides a built-in logging mechanism that can be easily integrated into your application. In...

Request Lifecycle and Execution Context in NestJS

In NestJS, understanding the request lifecycle and the execution context is essential for developing robust and efficient applications. The request lifecycle is the series...

Guards: Implementing Role-Based Access Control in NestJS

In NestJS, guards are used to protect routes by determining whether the request should be allowed to proceed. Guards can be used for a...

Interceptors: Transforming and Logging Responses in NestJS

In NestJS, interceptors are used to modify the response returned by a route handler. They allow you to execute additional logic before the final...

Middleware: Preprocessing Requests in NestJS

Middleware in NestJS is a powerful concept that allows you to execute logic before or after handling incoming HTTP requests. Middleware can be used...

Exception Filters: Centralized Error Handling in NestJS

In any application, error handling is critical for ensuring that users receive meaningful feedback when things go wrong. In NestJS, exception filters are a...

Using Pipes for Transformation and Validation in NestJS

In NestJS, pipes are a powerful and flexible mechanism for handling data transformations and validation. They allow you to manipulate data, validate inputs, and...